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Sample records for w-band arm cloud

  1. W-Band ARM Cloud Radar - Specifications and Design

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    W-88

    W-Band ARM Cloud Radar - Specifications and Design K. B. Widener Pacific Northwest National Laboratory Richland, Washington J. B. Mead ProSensing, Inc. Amherst, Massachusetts Abstract The Atmospheric Radiation Measurement (ARM) Program and ProSensing, Inc. have teamed to develop and deploy the W-band ARM Cloud Radar (WACR) at the SGP central facility. The WACR will be co- located with the ARM millimeter wave cloud radar (MMCR) with planned operation to begin in early 2005. This radar

  2. W-band ARM Cloud Radar (WACR) Update and Status

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    W-band ARM Cloud Radar (WACR) Update and Status PopStefanija, Ivan ProSensing, Inc. Mead, James ProSensing Inc. Widener, Kevin Pacific Northwest National Laboratory Category: Instruments Two W-band ARM Cloud Radars (WACR) have been developed for the SGP and the ARM Mobile Facility (AMF) by ProSensing. The SGP WACR was successfully deployed in the same shelter as the MMCR in 2005. It is currently collecting co-polarization and cross-polarization spectral moments (reflectivity, Doppler velocity,

  3. W-band ARM Cloud Radar (WACR) Handbook

    SciTech Connect (OSTI)

    Widener, KB; Johnson, K

    2005-01-05

    The W-band Atmospheric Radiation Measurement (ARM) Program Cloud Radar (WACR) systems are zenith pointing Doppler radars that probe the extent and composition of clouds at 95.04 GHz. The main purpose of this radar is to determine cloud boundaries (e.g., cloud bottoms and tops). This radar reports estimates for the first three spectra moments for each range gate up to 15 km. The 0th moment is reflectivity, the 1st moment is radial velocity, and the 2nd moment is spectral width. Also available are the raw spectra files. Unlike the millimeter wavelength cloud radar (MMCR), the WACR does not use pulse coding and operates in only copolarization and cross-polarization modes.

  4. ARM: Marine W-band (95 GHz) ARM Cloud Radar, filtered spectral data,

    Office of Scientific and Technical Information (OSTI)

    co-polarized mode (Dataset) | Data Explorer Marine W-band (95 GHz) ARM Cloud Radar, filtered spectral data, co-polarized mode Title: ARM: Marine W-band (95 GHz) ARM Cloud Radar, filtered spectral data, co-polarized mode Marine W-band (95 GHz) ARM Cloud Radar, filtered spectral data, co-polarized mode Authors: Joseph Hardin ; Bradley Isom ; Karen Johnson ; Nitin Bharadwaj Publication Date: 2013-06-28 OSTI Identifier: 1150244 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data

  5. ARM: W-Band Scanning ARM Cloud Radar (W-SACR) Hemispherical Sky RHI Scans (6 horizon-to-horizon scans at 30-degree azimuth intervals)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Dan Nelson; Joseph Hardin; Iosif (Andrei) Lindenmaier; Bradley Isom; Karen Johnson; Nitin Bharadwaj

    W-Band Scanning ARM Cloud Radar (W-SACR) Hemispherical Sky RHI Scans (6 horizon-to-horizon scans at 30-degree azimuth intervals)

  6. ARM: W-Band Scanning ARM Cloud Radar (W-SACR) Hemispherical Sky RHI Scans (6 horizon-to-horizon scans at 30-degree azimuth intervals)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Dan Nelson; Joseph Hardin; Iosif (Andrei) Lindenmaier; Bradley Isom; Karen Johnson; Nitin Bharadwaj

    1990-01-01

    W-Band Scanning ARM Cloud Radar (W-SACR) Hemispherical Sky RHI Scans (6 horizon-to-horizon scans at 30-degree azimuth intervals)

  7. ARM - Publications: Science Team Meeting Documents: W-Band ARM...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Kevin Pacific Northwest National Laboratory The W-Band ARM Cloud Radar (WACR) is a dual polarization 95 GHz radar that will be deployed at the SGP CART site in the spring of...

  8. Scanning ARM Cloud Radar Handbook

    SciTech Connect (OSTI)

    Widener, K; Bharadwaj, N; Johnson, K

    2012-06-18

    The scanning ARM cloud radar (SACR) is a polarimetric Doppler radar consisting of three different radar designs based on operating frequency. These are designated as follows: (1) X-band SACR (X-SACR); (2) Ka-band SACR (Ka-SACR); and (3) W-band SACR (W-SACR). There are two SACRs on a single pedestal at each site where SACRs are deployed. The selection of the operating frequencies at each deployed site is predominantly determined by atmospheric attenuation at the site. Because RF attenuation increases with atmospheric water vapor content, ARM's Tropical Western Pacific (TWP) sites use the X-/Ka-band frequency pair. The Southern Great Plains (SGP) and North Slope of Alaska (NSA) sites field the Ka-/W-band frequency pair. One ARM Mobile Facility (AMF1) has a Ka/W-SACR and the other (AMF2) has a X/Ka-SACR.

  9. ARM - Measurement - Cloud extinction

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud extinction The removal of radiant energy from an incident beam by the process of cloud absorption andor ...

  10. ARM: Marine W-band (95 GHz) ARM Cloud Radar (Dataset) | Data...

    Office of Scientific and Technical Information (OSTI)

    (BER) Country of Publication: United States Availability: ORNL Language: English Subject: 54 Environmental Sciences Radar Doppler; Radar reflectivity Dataset File size NAView ...

  11. ARM: Marine W-band (95 GHz) ARM Cloud Radar, filtered spectral...

    Office of Scientific and Technical Information (OSTI)

    (BER) Country of Publication: United States Availability: ORNL Language: English Subject: 54 Environmental Sciences Radar Doppler; Radar reflectivity Dataset File size NAView ...

  12. ARM: Auxiliary data for the Marine W-band (95 GHz) ARM Cloud...

    Office of Scientific and Technical Information (OSTI)

    (BER) Country of Publication: United States Availability: ORNL Language: English Subject: 54 Environmental Sciences Radar Doppler; Radar reflectivity Dataset File size NAView ...

  13. ARM - Instrument - wacr

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    radar General Overview The W-band Atmospheric Radiation Measurement (ARM) Program Cloud Radar (WACR) systems are zenith pointing Doppler radars that probe the extent and...

  14. ARM - Measurement - Total cloud water

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    cloud water ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Total cloud water The...

  15. ARM - Field Campaign - Marine ARM GPCI Investigation of Clouds...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsMarine ARM GPCI Investigation of Clouds (MAGIC) Campaign Links MAGIC Website ARM Data Discovery Browse Data Related Campaigns Marine ARM GPCI Investigation of Clouds...

  16. ARM - Measurement - Cloud ice particle

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ice particle ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud ice particle...

  17. ARM - Measurement - Images of Clouds

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Images of Clouds Digital images of cloud scenes (various formats) from satellite, aircraft, and ground-based...

  18. ARM - Measurement - Cloud size

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    measurements as cloud thickness, cloud area, and cloud aspect ratio. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the...

  19. ARM - Measurement - Cloud type

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Measurement : Cloud type Cloud type such as cirrus, stratus, cumulus etc Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the...

  20. ARM - Evaluation Product - ARM Cloud Retrieval Ensemble Data

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : ARM Cloud Retrieval Ensemble Data The ARM Cloud Retrieval Ensemble Data (ACRED) set...

  1. ARM - Measurement - Cloud location

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    point in space and time, typically expressed as a binary cloud mask. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the...

  2. ARM - Cloud Twist

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox ...

  3. ARM - Cloud Word Seek

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox ...

  4. ARM - Cloud Memory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox ...

  5. ARM - Cloud and Rain

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox ...

  6. ARM - Measurement - Cloud fraction

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    recorded for diagnostic or quality assurance purposes. ARM Instruments IRSI : Infra-Red Sky Imager MPL : Micropulse Lidar SKYRAD : Sky Radiometers on Stand for Downwelling...

  7. ARM - Field Campaign - Marine ARM GPCI Investigations of Clouds...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Marine ARM GPCI Investigations of Clouds (MAGIC): Cloud Properties from Zenith...

  8. ARM - Measurement - Cloud phase

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    that involves property descriptors such as stratus, cumulus, and cirrus. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the...

  9. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    April 15, 2010 [Facility News] Second Phase of African Scientific Exchange Underway Bookmark and Share Left to right: Dr. Zewdu Segele and Hama Hamidou examine reflectivity measurements made by the W-band ARM cloud radar in Niamey during July 2006. Left to right: Dr. Zewdu Segele and Hama Hamidou examine reflectivity measurements made by the W-band ARM cloud radar in Niamey during July 2006. Continuing an international collaboration that began with the ARM Mobile Facility deployment to Niamey,

  10. First observations of tracking clouds using scanning ARM cloud radars

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Journal Article: First observations of tracking clouds using scanning ARM cloud radars Citation Details In-Document Search Title: First observations of tracking clouds using scanning ARM cloud radars Tracking clouds using scanning cloud radars can help to document the temporal evolution of cloud properties well before large drop formation (''first echo''). These measurements complement cloud and precipitation tracking using geostationary satellites and

  11. ARM Data for Cloud Parameterization

    SciTech Connect (OSTI)

    Xu, Kuan-Man

    2006-10-02

    The PI's ARM investigation (DE-IA02-02ER633 18) developed a physically-based subgrid-scale saturation representation that fully considers the direct interactions of the parameterized subgrid-scale motions with subgrid-scale cloud microphysical and radiative processes. Major accomplishments under the support of that interagency agreement are summarized in this paper.

  12. FACT SHEET U.S. Department of Energy ARM Mobile Facility

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Alaska (2013-2018) * 95-GHz W-Band ARM Cloud Radar * Balloon-Borne Sounding System * Doppler Lidar, Micropulse Lidar, and Laser Ceilometer * Microwave Radiometer * Microwave...

  13. ARM - Feature Stories and Releases Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    addition, the Ka-ARM zenith radar, W-Band Scanning ARM Cloud Radar, radar wind profiler, Doppler lidar, and 2-D video disdrometer instrumentation was also added. (See the ENA...

  14. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    W-Band Cloud Radar Added to ARM Mobile Facility in Africa Bookmark and Share Most of the WACR is mounted on top of one of the AMF shelters. The WACR computer and chiller (used to keep the WACR cool in temperatures up to 47 degrees C) are located in the shelter below the radar. A W-band ARM Cloud Radar (WACR) recently joined the suite of baseline capabilities offered by the ARM Mobile Facility (AMF). The term "W-band" refers to the specific radio frequency range of this radar, which is

  15. ARM - Evaluation Product - ISCCP Cloud Data Around the ARM Sites

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : ISCCP Cloud Data Around the ARM Sites ISCCP data (Rossow and Schiffer, 1999 and...

  16. ARM - Field Campaign - ARM Cloud Aerosol Precipitation Experiment...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : ARM Cloud Aerosol Precipitation Experiment (ACAPEX) 2015.01.14 - 2015.02.12 Lead...

  17. ARM - Field Campaign - Marine ARM GPCI Investigations of Clouds...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Marine ARM GPCI Investigations of Clouds (MAGIC): Parsivel Disdrometer support for...

  18. ARM - Field Campaign - ARM Cloud Aerosol Precipitation Experiment...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : ARM Cloud Aerosol Precipitation Experiment (ACAPEX): Aerial Observations 2015.01.14...

  19. ARM - VAP Process - wacrarscl

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productswacrarscl Documentation & Plots Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : W-band Cloud Radar Active Remote Sensing of Cloud (WACRARSCL) Instrument Categories Cloud Properties Observations from the 95 GHz W-band ARM Cloud Radar (WACR), Micropulse Lidar, and ceilometer have been combined using the new WACR Active Remote Sensing of Clouds (WACR-ARSCL)

  20. ARM: Ka-Band Scanning ARM Cloud Radar (KASACR) Corner Reflector...

    Office of Scientific and Technical Information (OSTI)

    Title: ARM: Ka-Band Scanning ARM Cloud Radar (KASACR) Corner Reflector Calibration Ka-Band Scanning ARM Cloud Radar (KASACR) Corner Reflector Calibration Authors: Dan Nelson ; ...

  1. ARM - Field Campaign - Midlatitude Continental Convective Clouds...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Experiment (MC3E) Campaign Links Science Plan MC3E Website Field Campaign Report ARM Data Discovery Browse Data Related Campaigns Midlatitude Continental Convective Clouds...

  2. ARM - Field Campaign - Cloud Radar IOP

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of aerosol properties during clear-sky conditions. The ETL Radar Meteorology and Oceanography Division will field their NOAAK scanning cloud radar near the new ARM millimeter...

  3. ARM - Measurement - Cloud particle size distribution

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud particle size distribution The number of cloud particles present in any given volume of air...

  4. ARM - Measurement - Cloud particle number concentration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud particle number concentration The total number of cloud particles present in any given volume...

  5. ARM Cloud Properties Working Group: Meeting Logistics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cloud Properties WG Breakout Session 2008 ARM Science Team Meeting Mar. 10, 2008, Norfolk, VA Monday March 10, 2008 1500 to 1515: R. Hogan - A Proposal for ARM support of Cloudnet Activities 1515 to 1530: M. Jensen - Cloud Properties Value- Added Product Development 1530 to 1545: C. Long - Instrument Group Report 1545 to 1600: S. Matrosov - WSR-88D data for ARM science 1600 to 1615: Y. Zhao - A BimodalParticle Distribution Assumption in Cirrus: Comparison of retrieval results with in situ

  6. ARM - Field Campaign - Marine ARM GPCI Investigations of Clouds...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Browse Data Related Campaigns Marine ARM GPCI Investigation of Clouds (MAGIC) 2012.10.01, Lewis, AMF Comments? We would love to hear from you Send us a note below or call us at...

  7. ARM TR-008

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ARM-TR-073 W-band ARM Cloud Radar (WACR) Handbook April 2006 K. B. Widener K. Johnson Work supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research April 2006, ARM TR-073 Contents 1 General Overview ............................................................................................................................... 1 2

  8. ARM - Datastreams - wsacrspeccmaskcopol

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Datastreamswsacrspeccmaskcopol Documentation Data Quality Plots Citation DOI: 10.5439/1150288 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : WSACRSPECCMASKCOPOL W-Band Scanning ARM Cloud Radar, filtered spectral data, co-polarized mode

  9. ARM - Datastreams - wsacrspeccmaskxpol

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Datastreamswsacrspeccmaskxpol Documentation Data Quality Plots Citation DOI: 10.5439/1150289 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : WSACRSPECCMASKXPOL W-Band Scanning ARM Cloud Radar, filtered spectral data, cross-polarized mode

  10. First observations of tracking clouds using scanning ARM cloud radars

    SciTech Connect (OSTI)

    Borque, Paloma; Giangrande, Scott; Kollias, Pavlos

    2014-12-01

    Tracking clouds using scanning cloud radars can help to document the temporal evolution of cloud properties well before large drop formation (first echo). These measurements complement cloud and precipitation tracking using geostationary satellites and weather radars. Here, two-dimensional (2-D) Along-Wind Range Height Indicator (AW-RHI) observations of a population of shallow cumuli (with and without precipitation) from the 35-GHz scanning ARM cloud radar (SACR) at the DOE Atmospheric Radiation Measurements (ARM) program Southern Great Plains (SGP) site are presented. Observations from the ARM SGP network of scanning precipitation radars are used to provide the larger scale context of the cloud field and to highlight the advantages of the SACR to detect the numerous, small, non-precipitating cloud elements. A new Cloud Identification and Tracking Algorithm (CITA) is developed to track cloud elements. In CITA, a cloud element is identified as a region having a contiguous set of pixels exceeding a preset reflectivity and size threshold. The high temporal resolution of the SACR 2-D observations (30 sec) allows for an area superposition criteria algorithm to match cloud elements at consecutive times. Following CITA, the temporal evolution of cloud element properties (number, size, and maximum reflectivity) is presented. The vast majority of the designated elements during this cumulus event were short-lived non-precipitating clouds having an apparent life cycle shorter than 15 minutes. The advantages and disadvantages of cloud tracking using an SACR are discussed.

  11. ARM - Field Campaign - Midlatitude Continental Convective Clouds...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency...

  12. ARM - Field Campaign - Boundary Layer Cloud IOP

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsBoundary Layer Cloud IOP Campaign Links Campaign Images ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at...

  13. ARM - Field Campaign - Arctic Cloud Infrared Imaging

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Arctic Cloud Infrared Imaging 2012.07.16 - 2014.07.31 Lead Scientist : Joseph Shaw...

  14. ARM - Measurement - Cloud droplet size

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    droplet size Linear size (e.g. radius or diameter) of a cloud particle Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the...

  15. ARM - Measurement - Cloud effective radius

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the number size distribution of cloud particles, whether liquid or ice. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the...

  16. ARM - Campaign Instrument - mmcr94-air

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    -air Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : 94 GHz, W-band Airborne Cloud Radar (MMCR94-AIR)...

  17. ARM: X-Band Scanning ARM Cloud Radar (XSACR) Boundary Layer RHI...

    Office of Scientific and Technical Information (OSTI)

    Title: ARM: X-Band Scanning ARM Cloud Radar (XSACR) Boundary Layer RHI Scan X-Band Scanning ARM Cloud Radar (XSACR) Boundary Layer RHI Scan Authors: Dan Nelson ; Joseph Hardin ; ...

  18. ARM: X-Band Scanning ARM Cloud Radar (XSACR) Cross-Wind RHI Scan...

    Office of Scientific and Technical Information (OSTI)

    Cross-Wind RHI Scan Title: ARM: X-Band Scanning ARM Cloud Radar (XSACR) Cross-Wind RHI Scan X-Band Scanning ARM Cloud Radar (XSACR) Cross-Wind RHI Scan Authors: Dan Nelson ; Joseph ...

  19. First observations of tracking clouds using scanning ARM cloud radars

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Borque, Paloma; Giangrande, Scott; Kollias, Pavlos

    2014-12-01

    Tracking clouds using scanning cloud radars can help to document the temporal evolution of cloud properties well before large drop formation (‘‘first echo’’). These measurements complement cloud and precipitation tracking using geostationary satellites and weather radars. Here, two-dimensional (2-D) Along-Wind Range Height Indicator (AW-RHI) observations of a population of shallow cumuli (with and without precipitation) from the 35-GHz scanning ARM cloud radar (SACR) at the DOE Atmospheric Radiation Measurements (ARM) program Southern Great Plains (SGP) site are presented. Observations from the ARM SGP network of scanning precipitation radars are used to provide the larger scale context of the cloud fieldmore » and to highlight the advantages of the SACR to detect the numerous, small, non-precipitating cloud elements. A new Cloud Identification and Tracking Algorithm (CITA) is developed to track cloud elements. In CITA, a cloud element is identified as a region having a contiguous set of pixels exceeding a preset reflectivity and size threshold. The high temporal resolution of the SACR 2-D observations (30 sec) allows for an area superposition criteria algorithm to match cloud elements at consecutive times. Following CITA, the temporal evolution of cloud element properties (number, size, and maximum reflectivity) is presented. The vast majority of the designated elements during this cumulus event were short-lived non-precipitating clouds having an apparent life cycle shorter than 15 minutes. The advantages and disadvantages of cloud tracking using an SACR are discussed.« less

  20. ARM - Measurement - Cloud base height

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ARM Instruments BLC : Belfort Laser Ceilometer CEIL : Ceilometer IRSI : Infra-Red Sky ... External Instruments NOAASURF : NOAA Surface Meteorology Data, collected by NWS and ...

  1. ARM - Lesson Plans: Making Clouds

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox ...

  2. ARM - Measurement - Cloud top height

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    RUC : Rapid Update Cycle Model Data Field Campaign Instruments CO2LIDAR : Carbon Dioxide Doppler Lidar MPLCMASK : Cloud mask from Micropulse Lidar VARANAL : Constrained...

  3. ARM - Measurement - Cloud optical depth

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    TWST : Three Waveband Spectrally-agile Technique Sensor WRF-CHEM : Weather Research and Forecasting (WRF) Model Output Value-Added Products LBTM-MINNIS : Minnis Cloud Products...

  4. ARM - Measurement - Cloud condensation nuclei

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AOS : Aerosol Observing System CCN : Cloud Condensation Nuclei Particle Counter TDMA : Tandem Differential Mobility Analyzer Field Campaign Instruments AMT : Aerosol Modeling...

  5. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E...

    Office of Scientific and Technical Information (OSTI)

    Title: ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency ... (DOE) and NASA sponsored Mid-latitude Continental Convective Cloud Experiment (MC3E). ...

  6. ARM: Millimeter Wavelength Cloud Radar (MMCR): transmitted RF...

    Office of Scientific and Technical Information (OSTI)

    transmitted RF power Title: ARM: Millimeter Wavelength Cloud Radar (MMCR): transmitted RF power Millimeter Wavelength Cloud Radar (MMCR): transmitted RF power Authors: Karen ...

  7. ARM: Aerosol Observing System (AOS): cloud condensation nuclei...

    Office of Scientific and Technical Information (OSTI)

    Title: ARM: Aerosol Observing System (AOS): cloud condensation nuclei data Aerosol Observing System (AOS): cloud condensation nuclei data Authors: Scott Smith ; Cynthia Salwen ; ...

  8. ARM: Microwave Radiometer Retrievals (MWRRET) of Cloud Liquid...

    Office of Scientific and Technical Information (OSTI)

    Microwave Radiometer Retrievals (MWRRET) of Cloud Liquid Water and Precipitable Water Vapor Title: ARM: Microwave Radiometer Retrievals (MWRRET) of Cloud Liquid Water and ...

  9. ARM Cloud Aerosol Precipitation Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Aerosol Precipitation Experiment a NOAA ship in the Pacific Ocean and on a DOE- sponsored plane over land and sea. These researchers will study: (1) water sources, evolution and structure of atmospheric rivers over the Pacific Ocean (2) long range transport of aerosols over the Pacific Ocean between Hawaii and the U.S. West Coast, and how aerosols interact with atmospheric rivers (3) the point where atmospheric rivers make landfall on the U.S. West Coast, especially how clouds form where

  10. ARM - Data Announcements Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    June 30, 2008 [Data Announcements] Black Forest, Germany, WACR-ARSCL Evaluation Products Now Available Bookmark and Share FKB WACR-ARSCL Reflectivity Best Estimate data plot example. Observations from the 95 GHz W-band ARM Cloud Radar (WACR), Micropulse Lidar, and ceilometer have been combined using the new WACR-Active Remote Sensing of Clouds (WACR-ARSCL) value-added process (VAP) (Kollias and Miller, 2007) to produce cloud boundaries and time-height profiles of cloud location, radar moments,

  11. ARM Cloud-Aerosol-Precipitation Experiment (ACAPEX) Field Campaign Report

    Office of Scientific and Technical Information (OSTI)

    (Program Document) | SciTech Connect SciTech Connect Search Results Program Document: ARM Cloud-Aerosol-Precipitation Experiment (ACAPEX) Field Campaign Report Citation Details In-Document Search Title: ARM Cloud-Aerosol-Precipitation Experiment (ACAPEX) Field Campaign Report The U.S. Department of Energy (DOE)'s Atmospheric Radiation Measurement (ARM) Climate Research Facility's ARM Cloud-Aerosol-Precipitation Experiment (ACAPEX) field campaign contributes to CalWater 2015, a multi-agency

  12. ARM - Midlatitude Continental Convective Clouds

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jensen, Mike; Bartholomew, Mary Jane; Genio, Anthony Del; Giangrande, Scott; Kollias, Pavlos

    Convective processes play a critical role in the Earth's energy balance through the redistribution of heat and moisture in the atmosphere and their link to the hydrological cycle. Accurate representation of convective processes in numerical models is vital towards improving current and future simulations of Earths climate system. Despite improvements in computing power, current operational weather and global climate models are unable to resolve the natural temporal and spatial scales important to convective processes and therefore must turn to parameterization schemes to represent these processes. In turn, parameterization schemes in cloud-resolving models need to be evaluated for their generality and application to a variety of atmospheric conditions. Data from field campaigns with appropriate forcing descriptors have been traditionally used by modelers for evaluating and improving parameterization schemes.

  13. ARM - Midlatitude Continental Convective Clouds

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jensen, Mike; Bartholomew, Mary Jane; Genio, Anthony Del; Giangrande, Scott; Kollias, Pavlos

    2012-01-19

    Convective processes play a critical role in the Earth's energy balance through the redistribution of heat and moisture in the atmosphere and their link to the hydrological cycle. Accurate representation of convective processes in numerical models is vital towards improving current and future simulations of Earths climate system. Despite improvements in computing power, current operational weather and global climate models are unable to resolve the natural temporal and spatial scales important to convective processes and therefore must turn to parameterization schemes to represent these processes. In turn, parameterization schemes in cloud-resolving models need to be evaluated for their generality and application to a variety of atmospheric conditions. Data from field campaigns with appropriate forcing descriptors have been traditionally used by modelers for evaluating and improving parameterization schemes.

  14. ARM: Ka-Band Scanning ARM Cloud Radar (KASACR) Corner Reflector Raster Scan

    Office of Scientific and Technical Information (OSTI)

    (Dataset) | Data Explorer Ka-Band Scanning ARM Cloud Radar (KASACR) Corner Reflector Raster Scan Title: ARM: Ka-Band Scanning ARM Cloud Radar (KASACR) Corner Reflector Raster Scan Ka-Band Scanning ARM Cloud Radar (KASACR) Corner Reflector Raster Scan Authors: Dan Nelson ; Joseph Hardin ; Iosif [1] ; Bradley Isom ; Karen Johnson ; Nitin Bharadwaj + Show Author Affiliations (Andrei) Lindenmaier Publication Date: 2012-07-19 OSTI Identifier: 1095596 DOE Contract Number: DE-AC05-00OR22725

  15. ARM: Ka-Band Scanning ARM Cloud Radar (KASACR) Zenith Pointing PPI

    Office of Scientific and Technical Information (OSTI)

    (Dataset) | Data Explorer Ka-Band Scanning ARM Cloud Radar (KASACR) Zenith Pointing PPI Title: ARM: Ka-Band Scanning ARM Cloud Radar (KASACR) Zenith Pointing PPI Ka-Band Scanning ARM Cloud Radar (KASACR) Zenith Pointing PPI Authors: Dan Nelson ; Joseph Hardin ; Iosif [1] ; Bradley Isom ; Karen Johnson ; Nitin Bharadwaj + Show Author Affiliations (Andrei) Lindenmaier Publication Date: 2014-04-14 OSTI Identifier: 1140236 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type:

  16. ARM - Field Campaign - IR Cloud Camera Feasibility Study

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsIR Cloud Camera Feasibility Study ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send...

  17. ARM - Field Campaign - Remote Cloud Sensing (RCS) Field Evaluation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsRemote Cloud Sensing (RCS) Field Evaluation ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA....

  18. ARM - PI Product - AERIoe Thermodynamic Profile and Cloud Retrieval...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    you Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : AERIoe Thermodynamic Profile and Cloud Retrieval for MC3E Lamont X-band site (I6) ARM research The...

  19. ARM - PI Product - AERIoe Thermodynamic Profile and Cloud Retrieval...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    you Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : AERIoe Thermodynamic Profile and Cloud Retrieval for SGP CF during LABLE-2012 ARM research The...

  20. ARM - PI Product - AERIoe Thermodynamic Profile and Cloud Retrieval...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    you Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : AERIoe Thermodynamic Profile and Cloud Retrieval for SGP CF during LABLE-2013 ARM research The...

  1. ARM - Field Campaign - Whole Sky Imager Cloud Fraction Data

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsWhole Sky Imager Cloud Fraction Data ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send...

  2. ARM - Field Campaign - MASRAD: Cloud Condensate Nuclei Chemistry...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cloud Condensate Nuclei Chemistry Measurements Campaign Links AMF Point Reyes Website ARM Data Discovery Browse Data Related Campaigns MArine Stratus Radiation Aerosol and Drizzle...

  3. ARM - Field Campaign - MASRAD: Pt. Reyes Stratus Cloud and Drizzle...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsMASRAD: Pt. Reyes Stratus Cloud and Drizzle Study Campaign Links AMF Point Reyes Website ARM Data Discovery Browse Data Related Campaigns MArine Stratus Radiation...

  4. ARM - Field Campaign - Colorado: The Storm Peak Lab Cloud Property...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The Storm Peak Lab Cloud Property Validation Experiment (STORMVEX) Campaign Links STORMVEX Website ARM Data Discovery Browse Data Related Campaigns Colorado: CFHCMH Deployment to...

  5. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E...

    Office of Scientific and Technical Information (OSTI)

    Vertical Air Motion (williams-vertair) Title: ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, Vertical Air Motion (williams-vertair) ...

  6. ARM - PI Product - Cloud Properties and Radiative Heating Rates...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Cloud Properties and Radiative Heating Rates for TWP A cloud properties and...

  7. ARM - Field Campaign - Biogenic Aerosols - Effects on Clouds...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Climate Campaign Links BAECC Website ARM Data Discovery Browse Data Related Campaigns Biogenic Aerosols - Effects on Clouds and Climate: Cloud OD Sensor TWST 2014.06.15, Scott, AMF...

  8. Toward Understanding of Differences in Current Cloud Retrievals of ARM

    Office of Scientific and Technical Information (OSTI)

    Ground-based Measurements (Journal Article) | SciTech Connect Toward Understanding of Differences in Current Cloud Retrievals of ARM Ground-based Measurements Citation Details In-Document Search Title: Toward Understanding of Differences in Current Cloud Retrievals of ARM Ground-based Measurements Accurate observations of cloud microphysical properties are needed for evaluating and improving the representation of cloud processes in climate models. However, large differences are found in

  9. ARM: Ka-Band Scanning ARM Cloud Radar, filtered spectral data...

    Office of Scientific and Technical Information (OSTI)

    Ka-Band Scanning ARM Cloud Radar, filtered spectral data, co-polarized mode Authors: Dan Nelson ; Joseph Hardin ; Iosif 1 ; Bradley Isom ; Karen Johnson ; Nitin Bharadwaj + Show ...

  10. ARM: X-Band Scanning ARM Cloud Radar, filtered spectral data...

    Office of Scientific and Technical Information (OSTI)

    X-Band Scanning ARM Cloud Radar, filtered spectral data, co-polarized mode Authors: Dan Nelson ; Joseph Hardin ; Iosif 1 ; Bradley Isom ; Karen Johnson ; Nitin Bharadwaj + Show ...

  11. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    May 15, 2008 [Facility News] Cloud Radars on the Screen at Southern Great Plains Site Bookmark and Share With the flip of a switch, a mysterious cirrus dilemma turned from serious to solved recently, as the millimeter wavelength cloud radar (MMCR) passed inspection at the ARM Southern Great Plains (SGP) site in February. In addition, concerns about data from the ARM Mobile Facility (AMF)'s W-band ARM Cloud Radar (WACR) were alleviated through an intercomparison with the SGP WACR in March. Both

  12. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    February 29, 2008 [Facility News] Radar Focus Group Zeroes in on Data Quality Bookmark and Share On the roof of the radar instrument shelter at the ARM Southern Great Plains site, antennas for the W-band ARM Cloud Radar (rectangular white box) and millimeter wavelength cloud radar (conical cylinder) send data to their respective computer systems inside the shelter. In 2007, ARM established a Radar Focus Group to address strategic needs related to the use of radars as a key component of the ARM

  13. High power W-band klystrons

    SciTech Connect (OSTI)

    Caryotakis, George; Scheitrum, Glenn; Jongewaard, Erik; Vlieks, Arnold; Fowkes, Randy [Stanford Linear Accelerator Center, Menlo Park, California 94025 (United States); Li, Jeff [University of California Davis, Davis, California 95616 (United States)

    1999-05-01

    The development of W-band klystrons is discussed. Modeling of the klystron performance predicts 100 kW output power from a single klystron. The permanent magnet focusing and small size of the circuit permit combination of multiple klystrons in a module. A six-klystron module in a single vacuum envelope is expected to produce 500 kW peak power and up to 5 kW average power. The critical issues in the W-band klystron development are the electron beam transport and the fabrication of the klystron circuit. Two microfabrication techniques, EDM and LIGA, are being evaluated to produce the W-band circuit. {copyright} {ital 1999 American Institute of Physics.}

  14. First observations of tracking clouds using scanning ARM cloud...

    Office of Scientific and Technical Information (OSTI)

    Tracking clouds using scanning cloud radars can help to document the temporal evolution of ... Following CITA, the temporal evolution of cloud element properties (number, size, and ...

  15. ARM: X-Band Scanning ARM Cloud Radar (XSACR) Zenith Pointing PPI (Dataset)

    Office of Scientific and Technical Information (OSTI)

    | Data Explorer XSACR) Zenith Pointing PPI Title: ARM: X-Band Scanning ARM Cloud Radar (XSACR) Zenith Pointing PPI X-Band Scanning ARM Cloud Radar (XSACR) Zenith Pointing PPI Authors: Widener, Kevin ; Nelson, Dan ; Bharadwaj, Nitin ; Lindenmaier, Iosif [1] ; Johnson, Karen + Show Author Affiliations Andrei Publication Date: 2014-04-14 OSTI Identifier: 1150304 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type: Numeric Data Research Org: Atmospheric Radiation Measurement

  16. ARM - PI Product - Tropical Cloud Properties and Radiative Heating...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Tropical Cloud Properties and Radiative Heating Profiles We have generated a suite...

  17. ARM - Evaluation Product - Cloud Microbase-kazr Profiles (ka...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Cloud Microbase-kazr Profiles (ka) VAP The KAZR radars have recently replaced the...

  18. ARM - PI Product - Cloud-Scale Vertical Velocity and Turbulent...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Cloud-Scale Vertical Velocity and Turbulent Dissipation Rate Retrievals Time-height...

  19. ARM - Evaluation Product - MWR Retrievals of Cloud Liquid Water...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ProductsMWR Retrievals of Cloud Liquid Water and Water Vapor ARM Data Discovery Browse Data Documentation Use the Data File Inventory tool to view data availability at the file...

  20. Comparison of Parameterized Cloud Variability to ARM Data

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... 2000 IOP of the ARM Program, we use a battery of observations to assess whether the ... (35 GHz) cloud radar (MMCR), a Belfort laser ceilometer, and a MWR. Aircraft sampling ...

  1. ARM - Field Campaign - Deep Convective Clouds and Chemistry

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsDeep Convective Clouds and Chemistry Campaign Links DC3 Experiment Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send...

  2. ARM - Field Campaign - Mixed-Phase Arctic Cloud Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsMixed-Phase Arctic Cloud Experiment Campaign Links Science Document M-PACE Website Final Summary Report ARM Data Discovery Browse Data Comments? We would love to hear...

  3. ARM - Field Campaign - Tropical Warm Pool - International Cloud...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsTropical Warm Pool - International Cloud Experiment (TWP-ICE) Campaign Links TWP-ICE Website ARM Data Discovery Browse Data Comments? We would love to hear from you...

  4. W-Band Sheet Beam Klystron Simulation

    SciTech Connect (OSTI)

    Colby, E.R.; Caryotakis, G.; Fowkes, W.R.; /SLAC; Smithe, D.N.; /Mission Res., Newington

    2005-09-12

    With the development of ever higher energy particle accelerators comes the need for compactness and high gradient, which in turn require very high frequency high power rf sources. Recent development work in W-band accelerating techniques has spurred the development of a high-power W-band source. Axisymmetric sources suffer from fundamental power output limitations (P{sub sat} {approx} {lambda}{sup 2}) brought on by the conflicting requirements of small beam sizes and high beam current. The sheet beam klystron allows for an increase in beam current without substantial increase in the beam current density, allowing for reduced cathode current densities and focusing field strengths. Initial simulations of a 20:1 aspect ratio sheet beam/cavity interaction using the 3 dimensional particle-in-cell code Magic3D have demonstrated a 35% beam-power to RF power extraction efficiency. Calculational work and numerical simulations leading to a prototype W-band sheet beam klystron will be presented, together with preliminary cold test structure studies of a proposed RF cavity geometry.

  5. W-band sheet beam klystron simulation

    SciTech Connect (OSTI)

    Colby, E.R.; Caryotakis, G.; Fowkes, W.R. [Stanford Linear Accelerator Center, 2575 Sand Hill Rd., Menlo Park, California 94025 (United States); Smithe, D.N. [Mission Research Corporation, 8560 Cinderbed Road, Ste. 700, Newington, Virginia 22122 (United States)

    1999-05-01

    With the development of ever higher energy particle accelerators comes the need for compactness and high gradient, which in turn require very high frequency high power rf sources. Recent development work in W-band accelerating techniques has spurred the development of a high-power W-band source. Axisymmetric sources suffer from fundamental power output limitations (P{sub sat}{approximately}{lambda}{sup 2}) brought on by the conflicting requirements of small beam sizes and high beam current. The sheet beam klystron allows for an increase in beam current without substantial increase in the beam current density, allowing for reduced cathode current densities and focussing field strengths. Initial simulations of a 20:1 aspect ratio sheet beam/cavity interaction using the 3 dimensional particle-in-cell code Magic3D have demonstrated a 35{percent} beam-power to RF power extraction efficiency. Calculational work and numerical simulations leading to a prototype W-band sheet beam klystron will be presented, together with preliminary cold test structure studies of a proposed RF cavity geometry. {copyright} {ital 1999 American Institute of Physics.}

  6. LASIC Layered Atlantic Smoke Interaction with Clouds ARM Mobile Facility

    Office of Scientific and Technical Information (OSTI)

    (AMF) Overview (Conference) | SciTech Connect LASIC Layered Atlantic Smoke Interaction with Clouds ARM Mobile Facility (AMF) Overview Citation Details In-Document Search Title: LASIC Layered Atlantic Smoke Interaction with Clouds ARM Mobile Facility (AMF) Overview Authors: Nitschke, Kim Leonard [1] + Show Author Affiliations Los Alamos National Laboratory Publication Date: 2015-01-16 OSTI Identifier: 1167489 Report Number(s): LA-UR-15-20285 DOE Contract Number: AC52-06NA25396 Resource Type:

  7. ARM Cloud Aerosol Precipitation Experiment (ACAPEX) Science Plan (Program

    Office of Scientific and Technical Information (OSTI)

    Document) | SciTech Connect ARM Cloud Aerosol Precipitation Experiment (ACAPEX) Science Plan Citation Details In-Document Search Title: ARM Cloud Aerosol Precipitation Experiment (ACAPEX) Science Plan The western U.S. receives precipitation predominantly during the cold season when storms approach from the Pacific Ocean. The snowpack that accumulates during winter storms provides about 70-90% of water supply for the region. Understanding and modeling the fundamental processes that govern the

  8. ARM Cloud Retrieval Ensemble Data Set (ACRED) (Technical Report) | SciTech

    Office of Scientific and Technical Information (OSTI)

    Connect Technical Report: ARM Cloud Retrieval Ensemble Data Set (ACRED) Citation Details In-Document Search Title: ARM Cloud Retrieval Ensemble Data Set (ACRED) This document describes a new Atmospheric Radiation Measurement (ARM) data set, the ARM Cloud Retrieval Ensemble Data Set (ACRED), which is created by assembling nine existing ground-based cloud retrievals of ARM measurements from different cloud retrieval algorithms. The current version of ACRED includes an hourly average of nine

  9. ARM - Publications: Science Team Meeting Documents: Cirrus Cloud

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Measurements by the UAF Polarization Diversity Lidar during M-PACE Cirrus Cloud Measurements by the UAF Polarization Diversity Lidar during M-PACE Sassen, Kenneth University of Alaska Fairbanks Zhu, Jiang UAF During the final week of the September-October 2004 Mixed-Phase Cloud Experiment (M-PACE) conducted in and around the North Slope of Alaska (NSA) Atmospheric Radiation Measurement (ARM) site in Barrow, Alaska, cirrus clouds were unexpectedly prevalent. Overcoming earlier adversity, the

  10. ARM - Field Campaign - Macquarie Island Cloud and Radiation Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (MICRE) govCampaignsMacquarie Island Cloud and Radiation Experiment (MICRE) Campaign Links Science Plan Backgrounder Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Macquarie Island Cloud and Radiation Experiment (MICRE) 2016.03.01 - 2018.03.31 Lead Scientist : Roger Marchand Abstract Clouds over the Southern Ocean are poorly represented in present day reanalysis products and global climate model simulations. Errors in

  11. ARM - Midlatitude Continental Convective Clouds - Single Column Model

    Office of Scientific and Technical Information (OSTI)

    Forcing (xie-scm_forcing) (Dataset) | Data Explorer - Midlatitude Continental Convective Clouds - Single Column Model Forcing (xie-scm_forcing) Title: ARM - Midlatitude Continental Convective Clouds - Single Column Model Forcing (xie-scm_forcing) The constrained variational objective analysis approach described in Zhang and Lin [1997] and Zhang et al. [2001]was used to derive the large-scale single-column/cloud resolving model forcing and evaluation data set from the observational data

  12. ARM: X-Band Scanning ARM Cloud Radar (XSACR) RHI Scans, which...

    Office of Scientific and Technical Information (OSTI)

    X-Band Scanning ARM Cloud Radar (XSACR) RHI Scans, which can vary in elevation range and azimuth Authors: Dan Nelson ; Joseph Hardin ; Iosif 1 ; Bradley Isom ; Karen Johnson ; ...

  13. W-Band Sheet Beam Klystron Design

    SciTech Connect (OSTI)

    Scheitrum, G.; Caryotakis, G.; Burke, A.; Jensen, A.; Jongewaard, E.a Krasnykh, A.; Neubauer, M.; Phillips, R.; Rauenbuehler, K.; /SLAC

    2011-11-11

    Sheet beam devices provide important advantages for very high power, narrow bandwidth RF sources like accelerator klystrons [1]. Reduced current density and increased surface area result in increased power capabi1ity, reduced magnetic fields for focusing and reduced cathode loading. These advantages are offset by increased complexity, beam formation and transport issues and potential for mode competition in the ovennoded cavities and drift tube. This paper will describe the design issues encountered in developing a 100 kW peak and 2 kW average power sheet beam k1ystron at W-band including beam formation, beam transport, circuit design, circuit fabrication and mode competition.

  14. ARM - Publications: Science Team Meeting Documents: Clouds over the ARM SGP

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Network area - 3D prospective Clouds over the ARM SGP Network area - 3D prospective Genkova, Iliana University of Illinois-Champaign Long, Chuck Pacific Northwest National Laboratory Minnis, Patrick NASA Langley Research Center Heck, Patrick University of Wisconsin Khaiyer, Mandana Analytical Services and Material, Inc. The poster will present the final product of a 3-dimentional characterization of the clouds over the ARM SGP network area. We have aquired various ground-based and satellite

  15. W-band free-electron masers

    SciTech Connect (OSTI)

    Freund, H. P. [Science Applications International Corp., McLean, Virginia 22102 (United States); Jackson, R. H.; Danly, B. G.; Levush, B. [Naval Research Laboratory, Washington, District of Columbia 20375 (United States)

    1999-05-07

    Theoretical analyses of high power W-band (i.e., {approx_equal}94 GHz) free-electron maser amplifiers are presented for a helical wiggler/cylindrical waveguide configuration using the three-dimensional slow-time-scale ARACHNE simulation code [9]. The geometry treated by ARACHNE is that of an electron beam propagating through the cylindrical waveguide subject to a helical wiggler and an axial guide magnetic field. Two configurations are discussed. The first is the case of a reversed-guide field geometry where the guide field is oriented antiparallel to the helicity of the wiggler field. Using a 330 kV/20 A electron beam, efficiencies of the order of 7% are calculated with a bandwidth (FWHM) of 5 GHz. The second example employs a strong guide field of 20 kG oriented parallel to the helicity of the wiggler. Here, efficiencies of greater than 8% are possible with a FWHM bandwidth of 4.5 GHz using a 300 kV/20 A electron beam. A normalized emittance of 95 mm-mrad is assumed in both cases, and no beam losses are observed for either case. Both cases assume interaction with the fundamental TE{sub 11} mode, which has acceptably low losses in the W-band.

  16. ARM Scanning Radar

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Scanning Radar Azores Graciosa Deployment Cloud Climatology for Azores AMF Site: Graciosa Island in the Azores (28 o W 39 o N) * Small Low Island * No Direct Continental Influence * MBL Depths 1-2 km Stratocumulus Cumulus Under Stratocumulus Small Cumulus Large Cumulus Avg Winds Scanning W-band ARM Cloud Radar Same radar frequency as NASA's CloudSat Capable of detecting all radiatively significant clouds in a radius of 5-10* km Scanning capabilities: 1. Horizon to Horizon (fixed azimuth) 2.

  17. ARM: X-Band Scanning ARM Cloud Radar (W-SACR) Corner Reflector Raster Scan

    Office of Scientific and Technical Information (OSTI)

    (Dataset) | Data Explorer W-SACR) Corner Reflector Raster Scan Title: ARM: X-Band Scanning ARM Cloud Radar (W-SACR) Corner Reflector Raster Scan X-Band Scanning ARM Cloud Radar (W-SACR) Corner Reflector Raster Scan Authors: Dan Nelson ; Joseph Hardin ; Iosif [1] ; Bradley Isom ; Karen Johnson ; Nitin Bharadwaj + Show Author Affiliations (Andrei) Lindenmaier Publication Date: 2014-03-07 OSTI Identifier: 1150295 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type: Numeric

  18. ARM: X-Band Scanning ARM Cloud Radar (X-SACR) Side-Looking Radar (Dataset)

    Office of Scientific and Technical Information (OSTI)

    | Data Explorer X-SACR) Side-Looking Radar Title: ARM: X-Band Scanning ARM Cloud Radar (X-SACR) Side-Looking Radar X-Band Scanning ARM Cloud Radar (X-SACR) Side-Looking Radar Authors: Dan Nelson ; Joseph Hardin ; Iosif [1] ; Bradley Isom ; Karen Johnson ; Nitin Bharadwaj + Show Author Affiliations (Andrei) Lindenmaier Publication Date: 2014-01-16 OSTI Identifier: 1150300 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type: Numeric Data Research Org: Atmospheric Radiation

  19. ARM - Publications: Science Team Meeting Documents: Clouds in the Darwin

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    area and their relation to large-scale conditions Clouds in the Darwin area and their relation to large-scale conditions Jakob, Christian BMRC Hoeglund, Sofia Lulea University of Technology This poster shows a climatological overview of the cloud cover in the Darwin region (location of a TWP ARM site) in the very north of Australia. Information on optical thickness and cloud top pressure from the ISCCP Stage D1 product over the time period 1985 to 2000 has been used to examine how the cloud

  20. ARM - Evaluation Product - Cloud Classification VAP

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    properties includes cloud boundaries, thickness, phase, type, and precipitation information, and hence provides a useful tool for evaluation of model simulations and...

  1. Scanning ARM Cloud Radars Part I: Operational Sampling Strategies

    SciTech Connect (OSTI)

    Kollias, Pavlos; Bharadwaj, Nitin; Widener, Kevin B.; Jo, Ieng; Johnson, Karen

    2014-03-01

    Probing clouds in three-dimensions has never been done with scanning millimeter-wavelength (cloud) radars in a continuous operating environment. The acquisition of scanning cloud radars by the Atmospheric Radiation Measurement (ARM) program and research institutions around the world generate the need for developing operational scan strategies for cloud radars. Here, the first generation of sampling strategies for the Scanning ARM Cloud Radars (SACRs) is discussed. These scan strategies are designed to address the scientific objectives of the ARM program, however, they introduce an initial framework for operational scanning cloud radars. While the weather community uses scan strategies that are based on a sequence of scans at constant elevations, the SACRs scan strategies are based on a sequence of scans at constant azimuth. This is attributed to the cloud properties that are vastly different for rain and snow shafts that are the primary target of precipitation radars. A cloud surveillance scan strategy is introduced (HS-RHI) based on a sequence of horizon-to-horizon Range Height Indicator (RHI) scans that sample the hemispherical sky (HS). The HS-RHI scan strategy is repeated every 30 min to provide a static view of the cloud conditions around the SACR location. Between HS-RHI scan strategies other scan strategies are introduced depending on the cloud conditions. The SACRs are pointing vertically in the case of measurable precipitation at the ground. The radar reflectivities are corrected for water vapor attenuation and non-meteorological detection are removed. A hydrometeor detection mask is introduced based on the difference of cloud and noise statistics is discussed.

  2. ARM - Field Campaign - FIRE-Arctic Cloud Experiment/SHEBA

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsFIRE-Arctic Cloud Experiment/SHEBA ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : FIRE-Arctic Cloud Experiment/SHEBA 1998.05.19 - 1998.06.24 Lead Scientist : Peter Hobbs Data Availability Data from the UW Convair-580 measurements in FIRE-ACE/SHEBA have been archived at the Langley DAAC. For data sets, see below. Abstract Based in Barrow, Alaska, from May 15 through June 24, 1998, the Univ. of

  3. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E):

    Office of Scientific and Technical Information (OSTI)

    Multi-Frequency Profilers, 449 MHz Profiler(williams-449_prof) (Dataset) | Data Explorer Data Explorer Search Results ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, 449 MHz Profiler(williams-449_prof) Title: ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, 449 MHz Profiler(williams-449_prof) This data was collected by the NOAA 449-MHz and 2.8-GHz profilers in support of the Department of Energy (DOE)

  4. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E):

    Office of Scientific and Technical Information (OSTI)

    Multi-Frequency Profilers, S-band Radar (williams-s_band) (Dataset) | Data Explorer Data Explorer Search Results ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, S-band Radar (williams-s_band) Title: ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, S-band Radar (williams-s_band) This data was collected by the NOAA 449-MHz and 2.8-GHz profilers in support of the Department of Energy (DOE) and NASA

  5. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E):

    Office of Scientific and Technical Information (OSTI)

    Multi-Frequency Profilers, Parcivel Disdrometer (williams-disdro) (Dataset) | Data Explorer Parcivel Disdrometer (williams-disdro) Title: ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, Parcivel Disdrometer (williams-disdro) This data was collected by the NOAA 449-MHz and 2.8-GHz profilers in support of the Department of Energy (DOE) and NASA sponsored Mid-latitude Continental Convective Cloud Experiment (MC3E). The profiling radars were deployed

  6. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E):

    Office of Scientific and Technical Information (OSTI)

    Multi-Frequency Profilers, Surface Meteorology (williams-surfmet) (Dataset) | Data Explorer Surface Meteorology (williams-surfmet) Title: ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, Surface Meteorology (williams-surfmet) This data was collected by the NOAA 449-MHz and 2.8-GHz profilers in support of the Department of Energy (DOE) and NASA sponsored Mid-latitude Continental Convective Cloud Experiment (MC3E). The profiling radars were deployed

  7. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E):

    Office of Scientific and Technical Information (OSTI)

    Multi-Frequency Profilers, Vertical Air Motion (williams-vertair) (Dataset) | Data Explorer Vertical Air Motion (williams-vertair) Title: ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, Vertical Air Motion (williams-vertair) This data was collected by the NOAA 449-MHz and 2.8-GHz profilers in support of the Department of Energy (DOE) and NASA sponsored Mid-latitude Continental Convective Cloud Experiment (MC3E). The profiling radars were deployed

  8. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Battle With Bugs Nearly Over Thanks to New Radar Bookmark and Share The new W-band ARM cloud radar, or WACR, provides improved sensitivity for detecting tiny objects in the atmosphere to an altitude of 5 km. The instrument's antenna is located adjacent to the [/instruments/instrument.php?id=mmcr][millimeter wave cloud radar (MMCR)] antenna on top of the MMCR shelter; the rest of the unit is located inside (inset). The main purpose of the millimeter wavelength cloud radar (MMCR) is to measure

  9. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Scanning Capability Added to Cloud Radar Bookmark and Share As a prelude to great things to come throughout the user facility, a new 95-gigahertz scanning W-band cloud radar was installed in late September at the ARM Mobile Facility deployment site in the Azores. This new radar joins the instrument suite that has been collecting data at the airport on Graciosa Island since May 2009. The added scanning capability provides 3D information about clouds that scientists need to improve climate models.

  10. ARM - Field Campaign - Holistic Interactions of Shallow Clouds, Aerosols,

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Land-Ecosystems (HI-SCALE): Nano-Particle Number Concentrations Nano-Particle Number Concentrations Related Campaigns Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE) 2016.04.24, Fast, AAF Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE): Nano-Particle Number Concentrations 2016.08.28 - 2016.09.26 Lead Scientist :

  11. ARM - Field Campaign - Holistic Interactions of Shallow Clouds, Aerosols,

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Land-Ecosystems (HI-SCALE): Nanoparticle Composition and Precursors Nanoparticle Composition and Precursors Related Campaigns Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE) 2016.04.24, Fast, AAF Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE): Nanoparticle Composition and Precursors 2016.08.21 - 2016.09.27 Lead

  12. Evaluation of high-level clouds in cloud resolving model simulations with ARM and KWAJEX observations

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Liu, Zheng; Muhlbauer, Andreas; Ackerman, Thomas

    2015-11-05

    In this paper, we evaluate high-level clouds in a cloud resolving model during two convective cases, ARM9707 and KWAJEX. The simulated joint histograms of cloud occurrence and radar reflectivity compare well with cloud radar and satellite observations when using a two-moment microphysics scheme. However, simulations performed with a single moment microphysical scheme exhibit low biases of approximately 20 dB. During convective events, two-moment microphysical overestimate the amount of high-level cloud and one-moment microphysics precipitate too readily and underestimate the amount and height of high-level cloud. For ARM9707, persistent large positive biases in high-level cloud are found, which are not sensitivemore » to changes in ice particle fall velocity and ice nuclei number concentration in the two-moment microphysics. These biases are caused by biases in large-scale forcing and maintained by the periodic lateral boundary conditions. The combined effects include significant biases in high-level cloud amount, radiation, and high sensitivity of cloud amount to nudging time scale in both convective cases. The high sensitivity of high-level cloud amount to the thermodynamic nudging time scale suggests that thermodynamic nudging can be a powerful ‘‘tuning’’ parameter for the simulated cloud and radiation but should be applied with caution. The role of the periodic lateral boundary conditions in reinforcing the biases in cloud and radiation suggests that reducing the uncertainty in the large-scale forcing in high levels is important for similar convective cases and has far reaching implications for simulating high-level clouds in super-parameterized global climate models such as the multiscale modeling framework.« less

  13. ARM Value-Added Cloud Products: Description and Status

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Value-Added Cloud Products: Description and Status M. A. Miller, K. L. Johnson, and D. T. Troyan Brookhaven National Laboratory Upton, New York E. E. Clothiaux Pennsylvania State University University Park, Pennsylvania E. J. Mlawer Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts G. G. Mace University of Utah Salt Lake City, Utah Introduction The Atmospheric Radiation Measurement (ARM) Program operates a variety of state-of-the-art active and passive remote sensors at its

  14. Evaluating cloud retrieval algorithms with the ARM BBHRP framework

    SciTech Connect (OSTI)

    Mlawer,E.; Dunn,M.; Mlawer, E.; Shippert, T.; Troyan, D.; Johnson, K. L.; Miller, M. A.; Delamere, J.; Turner, D. D.; Jensen, M. P.; Flynn, C.; Shupe, M.; Comstock, J.; Long, C. N.; Clough, S. T.; Sivaraman, C.; Khaiyer, M.; Xie, S.; Rutan, D.; Minnis, P.

    2008-03-10

    Climate and weather prediction models require accurate calculations of vertical profiles of radiative heating. Although heating rate calculations cannot be directly validated due to the lack of corresponding observations, surface and top-of-atmosphere measurements can indirectly establish the quality of computed heating rates through validation of the calculated irradiances at the atmospheric boundaries. The ARM Broadband Heating Rate Profile (BBHRP) project, a collaboration of all the working groups in the program, was designed with these heating rate validations as a key objective. Given the large dependence of radiative heating rates on cloud properties, a critical component of BBHRP radiative closure analyses has been the evaluation of cloud microphysical retrieval algorithms. This evaluation is an important step in establishing the necessary confidence in the continuous profiles of computed radiative heating rates produced by BBHRP at the ARM Climate Research Facility (ACRF) sites that are needed for modeling studies. This poster details the continued effort to evaluate cloud property retrieval algorithms within the BBHRP framework, a key focus of the project this year. A requirement for the computation of accurate heating rate profiles is a robust cloud microphysical product that captures the occurrence, height, and phase of clouds above each ACRF site. Various approaches to retrieve the microphysical properties of liquid, ice, and mixed-phase clouds have been processed in BBHRP for the ACRF Southern Great Plains (SGP) and the North Slope of Alaska (NSA) sites. These retrieval methods span a range of assumptions concerning the parameterization of cloud location, particle density, size, shape, and involve different measurement sources. We will present the radiative closure results from several different retrieval approaches for the SGP site, including those from Microbase, the current 'reference' retrieval approach in BBHRP. At the NSA, mixed-phase clouds and cloud with a low optical depth are prevalent; the radiative closure studies using Microbase demonstrated significant residuals. As an alternative to Microbase at NSA, the Shupe-Turner cloud property retrieval algorithm, aimed at improving the partitioning of cloud phase and incorporating more constrained, conditional microphysics retrievals, also has been evaluated using the BBHRP data set.

  15. ARM - VAP Product - arsclwacrbnd1kollias

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productswacrarsclarsclwacrbnd1kollias Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1097548 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP Output : ARSCLWACRBND1KOLLIAS WACRARSCL: cloud boundaries from first Kollias algorithm Active Dates 2006.03.16 - 2014.09.13 Originating VAP Process W-band Cloud Radar Active Remote Sensing of Cloud :

  16. ARM - Data Announcements Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    19, 2014 [Data Announcements] New Best Estimate Data Available for WACR-ARSCL Bookmark and Share A data plot from the WACR-ARSCL Reflectivity Best Estimate from Graciosa Island, Azores, is shown for June 27, 2009. A data plot from the WACR-ARSCL Reflectivity Best Estimate from Graciosa Island, Azores, is shown for June 27, 2009. New data from the 95 GHz W-band ARM Cloud Radar-Active Remote Sensing of Clouds (WACR-ARSCL) value-added product (VAP) (Kollias and Miller, 2007) are now available in

  17. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Radar Looking Good with New Reflector Bookmark and Share A new corner reflector (too small to be seen in this photo) on the WACR calibration tower helped to correct problems related to signal interference. As reported in July 2005, the W-band ARM Cloud Radar (WACR) is a 95-GHz system designed for a unique purpose - monitoring the radar returns of insects in the lowest 5 km of the atmosphere. This data is used to remove "noise" from the millimeter wavelength cloud radar (MMCR) return

  18. Using ARM data to correct plane-parallel satellite retrievals of cloud

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    properties Using ARM data to correct plane-parallel satellite retrievals of cloud properties Dong, Xiquan University of North Dakota Minnis, Patrick NASA Langley Research Center Xi, Baike University of North Dakota Khaiyer, Mandana Analytical Services and Material, Inc. Category: Cloud Properties The angular variations of cloud properties derived from GOES data are examined using simultaneously collocated ARM surface observations/retrievals at the DOE ARM SGP site during the 6-yr period from

  19. Scanning ARM Cloud Radars. Part I: Operational Sampling Strategies (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect I: Operational Sampling Strategies Citation Details In-Document Search Title: Scanning ARM Cloud Radars. Part I: Operational Sampling Strategies Authors: Kollias P. ; Johnson K. ; Bharadwaj, N. ; Widener, K. ; Jo, I. Publication Date: 2014-03-01 OSTI Identifier: 1143615 Report Number(s): BNL--105483-2014-JA R&D Project: 2015-BNL-EE630EECA-Budg; KP1701000 DOE Contract Number: DE-AC02-98CH10886 Resource Type: Journal Article Resource Relation: Journal Name: J.

  20. GFDL ARM Project Technical Report: Using ARM Observations to Evaluate Cloud and Convection Parameterizations & Cloud-Convection-Radiation Interactions in the GFDL Atmospheric General Circulation Model

    SciTech Connect (OSTI)

    V. Ramaswamy; L. J. Donner; J-C. Golaz; S. A. Klein

    2010-06-17

    This report briefly summarizes the progress made by ARM postdoctoral fellow, Yanluan Lin, at GFDL during the period from October 2008 to present. Several ARM datasets have been used for GFDL model evaluation, understanding, and improvement. This includes a new ice fall speed parameterization with riming impact and its test in GFDL AM3, evaluation of model cloud and radiation diurnal and seasonal variation using ARM CMBE data, model ice water content evaluation using ARM cirrus data, and coordination of the TWPICE global model intercomparison. The work illustrates the potential and importance of ARM data for GCM evaluation, understanding, and ultimately, improvement of GCM cloud and radiation parameterizations. Future work includes evaluation and improvement of the new dynamicsPDF cloud scheme and aerosol activation in the GFDL model.

  1. DOE/SC-ARM-TR-099 ARM Cloud Retrieval Ensemble Data Set

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    099 ARM Cloud Retrieval Ensemble Data Set (ACRED) C Zhao MP Jensen S Xie GG Mace SA Klein SA McFarlane R McCoy EJ O'Connor JM Comstock A Protat J Delanoë MD Shupe M Deng D Turner M Dunn Z Wang RJ Hogan September 2011 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy,

  2. DOE/SC-ARM-12-020 MAGIC: Marine ARM GPCI Investigation of Clouds

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    20 MAGIC: Marine ARM GPCI Investigation of Clouds Principal Investigators ER Lewis WJ Wiscombe Co-Investigators BA Albrecht GL Bland CN Flagg SA Klein P Kollias G Mace RM Reynolds SE Schwartz AP Siebesma J Teixeira R Wood M Zhang October 2012 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or

  3. DOE/SC-ARM-14-030 ARM Cloud Aerosol Precipitation Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    0 ARM Cloud Aerosol Precipitation Experiment (ACAPEX) Science Plan LR Leung, Principal Investigator K Prather S Hagos M Ralph M Hughes D Rosenfeld C Long R Spackman S Rutledge P DeMott D Waliser C Fairall H Wang J Fan September 2014 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the

  4. Evaluation of high‐level clouds in cloud resolving model simulations with ARM and KWAJEX observations

    Office of Scientific and Technical Information (OSTI)

    fflAGUPUBLICATIONS Journal of Advances in Modeling Earth Systems RESEARCH ARTICLE Evaluation of high-level clouds in cloud resolving model 10.1002/2015MS000478 simulations with ARM and KWAJEX observations Key Points: * Two-moment microphysics improves simulated radar reflectivity histograms * Simulated high cloud amount is not sensitive to uncertainties in tested ice microphysics * Forcing uncertainties and periodic lateral BC lead to bias in high cloud amount Correspondence to: Z. Liu,

  5. ARM - VAP Product - arsclwacr1kollias

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productswacrarsclarsclwacr1kollias Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1097547 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP Output : ARSCLWACR1KOLLIAS WACRARSCL: multiple outputs from first Kollias algorithm Active Dates 2006.03.16 - 2014.09.13 Originating VAP Process W-band Cloud Radar Active Remote Sensing of Cloud : WACRARSCL

  6. Marine ARM GPCI Investigation of Clouds (MAGIC) Science Objectives and Significance

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ARM GPCI Investigation of Clouds (MAGIC) Science Objectives and Significance Every cloud in the sky begins as a tiny droplet, which forms around an even smaller particle called an aerosol particle. Some clouds produce precipitation, and some don't. The relationship between clouds, precipitation, and aerosols is very complex and very important. Scientists use data about clouds, precipitation, and aerosols to develop computer codes, or models, that simulate what's happening in the atmosphere and

  7. Clouds, aerosol, and precipitation in the Marine Boundary Layer: An ARM

    Office of Scientific and Technical Information (OSTI)

    mobile facility deployment (Journal Article) | SciTech Connect Journal Article: Clouds, aerosol, and precipitation in the Marine Boundary Layer: An ARM mobile facility deployment Citation Details In-Document Search Title: Clouds, aerosol, and precipitation in the Marine Boundary Layer: An ARM mobile facility deployment The Clouds, Aerosol, and Precipitation in the Marine Boundary Layer (CAP-MBL) deployment at Graciosa Island in the Azores generated a 21-month (April 2009-December 2010)

  8. Testing AGCM-Predicted Cloud and Radiation Properties with ARM Data: The

    Office of Scientific and Technical Information (OSTI)

    Super-Parameterization Approach (Conference) | SciTech Connect Testing AGCM-Predicted Cloud and Radiation Properties with ARM Data: The Super-Parameterization Approach Citation Details In-Document Search Title: Testing AGCM-Predicted Cloud and Radiation Properties with ARM Data: The Super-Parameterization Approach The goal of our study is to directly evaluate treatment of clouds and radiation in an atmospheric global climate model (AGCM) using long-term observations from the Atmospheric

  9. ARM - Field Campaign - Ground-based Cloud Tomography Experiment at SGP

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsGround-based Cloud Tomography Experiment at SGP ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Ground-based Cloud Tomography Experiment at SGP 2009.05.26 - 2009.07.17 Lead Scientist : Dong Huang For data sets, see below. Abstract Knowledge of 3D cloud properties is pressingly needed in many research fields. One of the problems encountered when trying to represent 3D cloud fields in numerical

  10. ARM: X-Band Scanning ARM Cloud Radar (XSACR) Hemispherical Sky RHI Scans (6 horizon-to-horizon scans at 30-degree azimuth intervals)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Dan Nelson; Joseph Hardin; Iosif (Andrei) Lindenmaier; Bradley Isom; Karen Johnson; Nitin Bharadwaj

    X-Band Scanning ARM Cloud Radar (XSACR) Hemispherical Sky RHI Scans (6 horizon-to-horizon scans at 30-degree azimuth intervals)

  11. ARM: Ka-Band Scanning ARM Cloud Radar (KASACR) Hemispherical Sky RHI Scan (6 horizon-to-horizon scans at 30-degree azimuth intervals)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Dan Nelson; Joseph Hardin; Iosif (Andrei) Lindenmaier; Bradley Isom; Karen Johnson; Nitin Bharadwaj

    Ka-Band Scanning ARM Cloud Radar (KASACR) Hemispherical Sky RHI Scan (6 horizon-to-horizon scans at 30-degree azimuth intervals)

  12. ARM: Ka-Band Scanning ARM Cloud Radar (KASACR) Hemispherical Sky RHI Scan (6 horizon-to-horizon scans at 30-degree azimuth intervals)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Dan Nelson; Joseph Hardin; Iosif (Andrei) Lindenmaier; Bradley Isom; Karen Johnson; Nitin Bharadwaj

    2011-05-24

    Ka-Band Scanning ARM Cloud Radar (KASACR) Hemispherical Sky RHI Scan (6 horizon-to-horizon scans at 30-degree azimuth intervals)

  13. ARM: X-Band Scanning ARM Cloud Radar (XSACR) Hemispherical Sky RHI Scans (6 horizon-to-horizon scans at 30-degree azimuth intervals)

    SciTech Connect (OSTI)

    Dan Nelson; Joseph Hardin; Iosif Lindenmaier; Bradley Isom; Karen Johnson; Nitin Bharadwaj

    2011-09-14

    X-Band Scanning ARM Cloud Radar (XSACR) Hemispherical Sky RHI Scans (6 horizon-to-horizon scans at 30-degree azimuth intervals)

  14. ARM - Field Campaign - Measuring Clouds at SGP with Stereo Photogramme...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the form of the Point Cloud of Cloud Points Product (PCCPP). The PCCPP will: provide context on life-cycle stage and cloud position for vertically pointing radars, lidars, and...

  15. ARM - PI Product - Cloud Property Retrieval Products for Graciosa...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    LWP43*pi*r3*N*dZ with the uncertainty of 30%, sigma0.38 cloud optical thickness taudong: Dong98 calculated cloud optical depth from tau1.575LWPreDong cloud particle...

  16. Evaluation of Long-Term Cloud-Resolving Modeling with ARM Data

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Evaluation of Long-Term Cloud-Resolving Modeling with ARM Data Zeng, Xiping NASAGSFC Tao, Wei-Kuo NASAGoddard Space Flight Center Zhang, Minghua State University of New York at ...

  17. ARM - PI Product - MWR Retrievals of Cloud Liquid Water and Water...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govDataPI Data ProductsMWR Retrievals of Cloud Liquid Water and Water Vapor ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us...

  18. ARM - Field Campaign - MASRAD: Cloud Study from the 2NFOV at...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govCampaignsMASRAD: Cloud Study from the 2NFOV at Pt. Reyes Field Campaign Campaign Links AMF Point Reyes Website ARM Data Discovery Browse Data Related Campaigns MArine Stratus...

  19. ARM - Publications: Science Team Meeting Documents: Tropical Cloud Overlap

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Structure and Cloud Area Tropical Cloud Overlap Structure and Cloud Area Vogelmann, Andrew Brookhaven National Laboratory Jensen, Michael Brookhaven National Laboratory Boer, Erwin LUEBEC The Tropical Western Pacific (TWP), with its vigorous cloud activity, is an excellent location to investigate the relationships between cloud properties and radiative fluxes. To unlock such issues first requires a better understanding of what the observed structures of clouds are and how they affect the

  20. ARM - Evaluation Product - CMWG Data - SCM-Forcing Data, Cloud...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    data. Cloud microphysical properties derived from Mace's data of atmospheric thermodynamics, cloud properties, radiative fluxes and radiative heating rates are regridded to a...

  1. ARM - Field Campaign - Azores: Clouds, Aerosol and Precipitation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Campaigns Azores: Above-Cloud Radiation Budget near Graciosa Island 2010.04.15, Miller, AMF Azores: Extension to Clouds, Aerosol and Precipitation in the Marine Boundary...

  2. ARM - Publications: Science Team Meeting Documents: Cloud Radiative...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Research Facility: Part 2. The Vertical Redistribution of Radiant Energy by Clouds. ... Documentation with data of the effects of clouds on the radiant energy balance of the ...

  3. ARM - Field Campaign - Biogenic Aerosols - Effects on Clouds...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    relevant to DOE's goals in understanding the impact of clouds and aerosols on climate change. TWST contributes significantly to the body of data used for extracting cloud...

  4. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Related Campaigns Meetings Cloud Life Cycle Working Group Contacts Michael Jensen, Lead Scientist Midlatitude Continental Convective Clouds Experiment (MC3E) Thanks to...

  5. ARM - Midlatitude Continental Convective Clouds (jensen-sonde)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jensen, Mike; Comstock, Jennifer; Genio, Anthony Del; Giangrande, Scott; Kollias, Pavlos

    2012-01-19

    A major component of the Mid-latitude Continental Convective Clouds Experiment (MC3E) field campaign was the deployment of an enhanced radiosonde array designed to capture the vertical profile of atmospheric state variables (pressure, temperature, humidity wind speed and wind direction) for the purpose of deriving the large-scale forcing for use in modeling studies. The radiosonde array included six sites (enhanced Central Facility [CF-1] plus five new sites) launching radiosondes at 3-6 hour sampling intervals. The network will cover an area of approximately (300)2 km2 with five outer sounding launch sites and one central launch location. The five outer sounding launch sites are: S01 Pratt, KS [ 37.7oN, 98.75oW]; S02 Chanute, KS [37.674, 95.488]; S03 Vici, Oklahoma [36.071, -99.204]; S04 Morris, Oklahoma [35.687, -95.856]; and S05 Purcell, Oklahoma [34.985, -97.522]. Soundings from the SGP Central Facility during MC3E can be retrieved from the regular ARM archive. During routine MC3E operations 4 radiosondes were launched from each of these sites (approx. 0130, 0730, 1330 and 1930 UTC). On days that were forecast to be convective up to four additional launches were launched at each site (approx. 0430, 1030, 1630, 2230 UTC). There were a total of approximately 14 of these high frequency launch days over the course of the experiment.

  6. ARM Cloud Retrieval Ensemble Data Set (ACRED) (Technical Report) | SciTech

    Office of Scientific and Technical Information (OSTI)

    Connect Technical Report: ARM Cloud Retrieval Ensemble Data Set (ACRED) Citation Details In-Document Search Title: ARM Cloud Retrieval Ensemble Data Set (ACRED) × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a public service. Visit OSTI to utilize additional information resources in energy science and technology. A paper copy of this document is

  7. Understanding and Improving CRM and GCM Simulations of Cloud Systems with ARM Observations

    SciTech Connect (OSTI)

    Wu, Xiaoqing

    2014-02-25

    The works supported by this ASR project lay the solid foundation for improving the parameterization of convection and clouds in the NCAR CCSM and the climate simulations. We have made a significant use of CRM simulations and ARM observations to produce thermodynamically and dynamically consistent multi-year cloud and radiative properties; improve the GCM simulations of convection, clouds and radiative heating rate and fluxes using the ARM observations and CRM simulations; and understand the seasonal and annual variation of cloud systems and their impacts on climate mean state and variability. We conducted multi-year simulations over the ARM SGP site using the CRM with multi-year ARM forcing data. The statistics of cloud and radiative properties from the long-term CRM simulations were compared and validated with the ARM measurements and value added products (VAP). We evaluated the multi-year climate simulations produced by the GCM with the modified convection scheme. We used multi-year ARM observations and CRM simulations to validate and further improve the trigger condition and revised closure assumption in NCAR GCM simulations that demonstrate the improvement of climate mean state and variability. We combined the improved convection scheme with the mosaic treatment of subgrid cloud distributions in the radiation scheme of the GCM. The mosaic treatment of cloud distributions has been implemented in the GCM with the original convection scheme and enables the use of more realistic cloud amounts as well as cloud water contents in producing net radiative fluxes closer to observations. A physics-based latent heat (LH) retrieval algorithm was developed by parameterizing the physical linkages of observed hydrometeor profiles of cloud and precipitation to the major processes related to the phase change of atmospheric water.

  8. ARM - Publications: Science Team Meeting Documents: Day and Night cloud

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    fraction - Cloud Inter-Compariosn IOP results Day and Night cloud fraction - Cloud Inter-Compariosn IOP results Genkova, Iliana University of Illinois-Champaign Long, Chuck Pacific Northwest National Laboratory Turner, David Pacific Northwest National Laboratory We present results from the CIC IOP from March-may, 2003. Day time and night time cloud fraction retrieval algorithms have been presented and intercompared. Amount of low, middle and high cloud have been estimated and compared to

  9. Inferring Cloud Feedbacks from ARM Continuous Forcing, ISCCP, and ARSCL Data

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Inferring Cloud Feedbacks from ARM Continuous Forcing, ISCCP, and ARSCL Data A. D. Del Genio National Aeronautics and Space Administration Goddard Institute for Space Studies New York, New York A. B. Wolf and M.-S. Yao SGT Inc., Institute for Space Studies New York, New York Introduction Single Column Model (SCM) versions of parent general circulation models (GCMs), accompanied by cloud-resolving models (CRMs) that crudely resolve cloud-scale dynamics, have increasingly been used to simulate

  10. ARM - Field Campaign - Thin Cloud Rotating Shadowband Radiometer

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Thin Cloud Rotating Shadowband Radiometer 2008.01.08 - 2008.07.18 Lead Scientist : Mary Jane Bartholomew For data sets, see below. Abstract The Thin-Cloud Rotating Shadowband...

  11. Cloud Effects on Radiative Heating Rate Profiles over Darwin using ARM and A-train Radar/Lidar Observations

    SciTech Connect (OSTI)

    Thorsen, Tyler J.; Fu, Qiang; Comstock, Jennifer M.

    2013-06-11

    Observations of clouds from the ground-based U.S. Department of Energy Atmospheric Radiation Measurement program (ARM) and satellite-based A-train are used to compute cloud radiative forcing profiles over the ARM Darwin, Australia site. Cloud properties are obtained from both radar (the ARM Millimeter Cloud Radar (MMCR) and the CloudSat satellite in the A-train) and lidar (the ARM Micropulse lidar (MPL) and the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellite in the A-train) observations. Cloud microphysical properties are taken from combined radar and lidar retrievals for ice clouds and radar only or lidar only retrievals for liquid clouds. Large, statistically significant differences of up to 1.43 K/day exist between the mean ARM and A-train net cloud radiative forcing profiles. The majority of the difference in cloud radiative forcing profiles is shown to be due to a large difference in the cloud fraction above 12 km. Above this altitude the A-train cloud fraction is significantly larger because more clouds are detected by CALIPSO than by the ground-based MPL. It is shown that the MPL is unable to observe as many high clouds as CALIPSO due to being more frequently attenuated and a poorer sensitivity even in otherwise clear-sky conditions. After accounting for cloud fraction differences and instrument sampling differences due to viewing platform we determined that differences in cloud radiative forcing due to the retrieved ice cloud properties is relatively small. This study demonstrates that A-train observations are better suited for the calculation cloud radiative forcing profiles. In addition, we find that it is necessary to supplement CloudSat with CALIPSO observations to obtain accurate cloud radiative forcing profiles since a large portion of clouds at Darwin are detected by CALIPSO only.

  12. ARM: AOS: Dual Column Cloud Condensation Nuclei Counter (Dataset...

    Office of Scientific and Technical Information (OSTI)

    AOS: Dual Column Cloud Condensation Nuclei Counter Authors: Derek Hageman ; Bill Behrens ; Scott Smith ; Janek Uin ; Janek Uin ; Cynthia Salwen ; Cynthia Salwen ; Annette Koontz ; ...

  13. ARM - PI Product - Atmospheric State, Cloud Microphysics & Radiative...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mace cloud retrieval icegsolar liquidomegasolar liquidgIR iceomegasolar icetauIR liquidtausolar iceomegaIR lwcbestestimate liquidtauIR reliquidbestestimat...

  14. ARM - Field Campaign - Cloud, Aerosol, and Complex Terrain Interaction...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    This range of environmental conditions and cloud properties coupled with a high frequency of events makes this an ideal location for improving our understanding of...

  15. ARM - Publications: Science Team Meeting Documents: Cloud Property...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cloud Property Retrievals using AIRS data during MPACE Huang, Allen University of Wisconsin Li, Jun University of Wisconsin-Madison Baggett, Kevin University of Wisconsin-Madison...

  16. ARM - Field Campaign - Aerosol and Cloud Experiments in the Eastern...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    horizontal variabilities of aerosol, trace gases, cloud, drizzle, and atmospheric thermodynamics are critically needed for understanding and quantifying the budget of MBL aerosol,...

  17. ARM - Publications: Science Team Meeting Documents: Clouds and...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Clouds and radiation in the Arctic coastal system - effects of local heterogeneity Key, Erica University of Miami, RSMAS Minnett, Peter University of Miami Improving our...

  18. Scanning ARM Cloud Radars. Part II: Data Quality Control and...

    Office of Scientific and Technical Information (OSTI)

    Sponsoring Org: USDOE SC OFFICE OF SCIENCE (SC) Country of Publication: United States Language: English Subject: 54 ENVIRONMENTAL SCIENCES Word Cloud More Like This Full Text ...

  19. Scanning ARM Cloud Radars. Part I: Operational Sampling Strategies...

    Office of Scientific and Technical Information (OSTI)

    Sponsoring Org: USDOE SC OFFICE OF SCIENCE (SC) Country of Publication: United States Language: English Subject: 54 ENVIRONMENTAL SCIENCES Word Cloud More Like This Full Text ...

  20. ARM - Field Campaign - Holistic Interactions of Shallow Clouds...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE); National Geospatial-Intelligence Agency Calibration Target Placements 2016.04.24, Kalukin, SGP ...

  1. ARM: Ka-Band Scanning ARM Cloud Radar (KASACR) Zenith Pointing...

    Office of Scientific and Technical Information (OSTI)

    (BER) Country of Publication: United States Availability: ORNL Language: English Subject: 54 Environmental Sciences Atmospheric turbulence; Cloud particle size distribution; ...

  2. ARM: X-Band Scanning ARM Cloud Radar (XSACR) Zenith Pointing...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Availability: ORNL Language: English Subject: 54 Environmental Sciences Cloud particle size distribution; Hydrometeor fall velocity; ...

  3. ARM: Ka-Band Scanning ARM Cloud Radar (KASACR) Corner Reflector...

    Office of Scientific and Technical Information (OSTI)

    (BER) Country of Publication: United States Availability: ORNL Language: English Subject: 54 Environmental Sciences Atmospheric turbulence; Cloud particle size distribution; ...

  4. ARM - Field Campaign - Cloud LAnd Surface Interaction Campaign...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Campaign Links CLASIC Website ARM Data Discovery Browse Data Related Campaigns CLASIC - SAM Support 2007.06.09, DeVore, SGP CLASIC - 9.4 GHz Phase Array Radar 2007.06.08, Kollias,...

  5. DOE/SC-ARM-P-07-006 Evaluation of Mixed-Phase Cloud Microphysics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    6 Evaluation of Mixed-Phase Cloud Microphysics Parameterizations with the NCAR Single Column Climate Model (SCAM) and ARM Observations Second Quarter 2007 ARM Metric Report April 2007 Xiaohong Liu and Steven J. Ghan Pacific Northwest National Laboratory Richland, Washington Shaocheng Xie Lawrence Livermore National Laboratory Livermore, California Work supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research X. Lui, S.J. Ghan, and S. Xie,

  6. Evaluation of aerosol-cloud interaction in the GISS ModelE using ARM

    Office of Scientific and Technical Information (OSTI)

    observations (Journal Article) | SciTech Connect Evaluation of aerosol-cloud interaction in the GISS ModelE using ARM observations Citation Details In-Document Search Title: Evaluation of aerosol-cloud interaction in the GISS ModelE using ARM observations Authors: de Boer G. ; Vogelmann A. ; Bauer, S. E. ; Toto, T. ; Menon, S. Publication Date: 2013-06-17 OSTI Identifier: 1093185 Report Number(s): BNL--101137-2013-JA R&D Project: 2015-BNL-EE630EECA-Budg DOE Contract Number:

  7. Field Evaluation of Real-time Cloud OD Sensor TWST during the DOE ARM TCAP

    Office of Scientific and Technical Information (OSTI)

    Campaign 2013 Final Campaign Report (Technical Report) | SciTech Connect Field Evaluation of Real-time Cloud OD Sensor TWST during the DOE ARM TCAP Campaign 2013 Final Campaign Report Citation Details In-Document Search Title: Field Evaluation of Real-time Cloud OD Sensor TWST during the DOE ARM TCAP Campaign 2013 Final Campaign Report The objective of this internal research and development (IRAD)-funded campaign by Aerodyne Research, Inc. was to demonstrate the field-worthiness and assess

  8. Field Evaluation of Real-time Cloud OD Sensor TWST during the DOE ARM TCAP

    Office of Scientific and Technical Information (OSTI)

    Campaign 2013 Final Campaign Report (Technical Report) | SciTech Connect Field Evaluation of Real-time Cloud OD Sensor TWST during the DOE ARM TCAP Campaign 2013 Final Campaign Report Citation Details In-Document Search Title: Field Evaluation of Real-time Cloud OD Sensor TWST during the DOE ARM TCAP Campaign 2013 Final Campaign Report The objective of this internal research and development (IRAD)-funded campaign by Aerodyne Research, Inc. was to demonstrate the field-worthiness and assess

  9. Simulation of Post-Frontal Boundary Layers Observed During the ARM 2000 Cloud IOP

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Simulation of Post-Frontal Boundary Layers Observed During the ARM 2000 Cloud IOP D. B. Mechem and Y. L. Kogan Cooperative Institute for Mesoscale Meteorological Studies University of Oklahoma Norman, Oklahoma M. Poellot University of North Dakota Grand Forks, North Dakota Introduction Large-eddy simulation (LES) models have been widely employed in the study of radiatively forced cloud topped boundary layers (CTBL). These boundary layers are typically well mixed and characterized by a sharp jump

  10. Validation of Cloud Properties Derived from GOES-9 Over the ARM TWP Region

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cloud Properties Derived from GOES-9 Over the ARM TWP Region M. M. Khaiyer, M. L. Nordeen, D. R. Doelling, and V. Chakrapani Analytical Services and Materials, Inc. Hampton, Virginia P. Minnis and W. L. Smith, Jr. Atmospheric Sciences National Aeronautic and Space Administration Langley Research Center Hampton, Virginia Introduction Satellite data are essential for monitoring clouds and radiative fluxes where ground-based instruments are unavailable. On April 24, 2003, the ninth geostationary

  11. Clouds, aerosol, and precipitation in the Marine Boundary Layer: An ARM mobile facility deployment

    SciTech Connect (OSTI)

    Wood, Robert; Luke, Ed; Wyant, Matthew; Bretherton, Christopher S.; Remillard, Jasmine; Kollias, Pavlos; Fletcher, Jennifer; Stemmler, Jayson; deSzoeke, S.; Yuter, Sandra; Miller, Matthew; Mechem, David; Tselioudis, George; Chiu, Christine; Mann, Julia; O Connor, Ewan; Hogan, Robin; Dong, Xiquan; Miller, Mark; Ghate, Virendra; Jefferson, Anne; Min, Qilong; Minnis, Patrick; Palinkonda, Rabindra; Albrecht, Bruce; Hannay, Cecile; Lin, Yanluan

    2014-04-27

    The Clouds, Aerosol, and Precipitation in the Marine Boundary Layer (CAP-MBL) deployment at Graciosa Island in the Azores generated a 21-month (April 2009-December 2010) comprehensive dataset documenting clouds, aerosols, and precipitation using the Atmospheric Radiation Measurement Program (ARM) Mobile Facility (AMF). The scientific aim of the deployment is to gain improved understanding of the interactions of clouds, aerosols, and precipitation in the marine boundary layer. Graciosa Island straddles the boundary between the subtropics and midlatitudes in the Northeast Atlantic Ocean and consequently experiences a great diversity of meteorological and cloudiness conditions. Low clouds are the dominant cloud type, with stratocumulus and cumulus occurring regularly. Approximately half of all clouds contained precipitation detectable as radar echoes below the cloud base. Radar and satellite observations show that clouds with tops from 1-11 km contribute more or less equally to surface-measured precipitation at Graciosa. A wide range of aerosol conditions was sampled during the deployment consistent with the diversity of sources as indicated by back-trajectory analysis. Preliminary findings suggest important two-way interactions between aerosols and clouds at Graciosa, with aerosols affecting light precipitation and cloud radiative properties while being controlled in part by precipitation scavenging.The data from Graciosa are being compared with short-range forecasts made with a variety of models. A pilot analysis with two climate and two weather forecast models shows that they reproduce the observed time-varying vertical structure of lower-tropospheric cloud fairly well but the cloud-nucleating aerosol concentrations less well. The Graciosa site has been chosen to be a permanent fixed ARM site that became operational in October 2013.

  12. Clouds, aerosol, and precipitation in the Marine Boundary Layer: An ARM mobile facility deployment

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Wood, Robert; Luke, Ed; Wyant, Matthew; Bretherton, Christopher S.; Remillard, Jasmine; Kollias, Pavlos; Fletcher, Jennifer; Stemmler, Jayson; deSzoeke, S.; Yuter, Sandra; et al

    2014-04-27

    The Clouds, Aerosol, and Precipitation in the Marine Boundary Layer (CAP-MBL) deployment at Graciosa Island in the Azores generated a 21-month (April 2009-December 2010) comprehensive dataset documenting clouds, aerosols, and precipitation using the Atmospheric Radiation Measurement Program (ARM) Mobile Facility (AMF). The scientific aim of the deployment is to gain improved understanding of the interactions of clouds, aerosols, and precipitation in the marine boundary layer. Graciosa Island straddles the boundary between the subtropics and midlatitudes in the Northeast Atlantic Ocean and consequently experiences a great diversity of meteorological and cloudiness conditions. Low clouds are the dominant cloud type, with stratocumulusmore » and cumulus occurring regularly. Approximately half of all clouds contained precipitation detectable as radar echoes below the cloud base. Radar and satellite observations show that clouds with tops from 1-11 km contribute more or less equally to surface-measured precipitation at Graciosa. A wide range of aerosol conditions was sampled during the deployment consistent with the diversity of sources as indicated by back-trajectory analysis. Preliminary findings suggest important two-way interactions between aerosols and clouds at Graciosa, with aerosols affecting light precipitation and cloud radiative properties while being controlled in part by precipitation scavenging.The data from Graciosa are being compared with short-range forecasts made with a variety of models. A pilot analysis with two climate and two weather forecast models shows that they reproduce the observed time-varying vertical structure of lower-tropospheric cloud fairly well but the cloud-nucleating aerosol concentrations less well. The Graciosa site has been chosen to be a permanent fixed ARM site that became operational in October 2013.« less

  13. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E...

    Office of Scientific and Technical Information (OSTI)

    This data was collected by the NOAA 449-MHz and 2.8-GHz profilers in support of the Department of Energy (DOE) and NASA sponsored Mid-latitude Continental Convective Cloud ...

  14. ARM - Tropical Warm Pool - International Cloud Experiment (TWP...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Tropical Warm Pool - International Cloud Experiment (TWP-ICE) twp-ice-big One of the most complete data sets of tropical cirrus and convection observations ever collected will ...

  15. ARM - Field Campaign - Azores: Above-Cloud Radiation Budget near...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Campaigns Azores: Clouds, Aerosol and Precipitation in the Marine Boundary Layer (CAP-MBL) 2009.05.01, Wood, AMF Comments? We would love to hear from you Send us a note...

  16. Use of the ARM Measurements of Spectral Zenith Radiance for Better Understanding of 3D Cloud-Radiation Processes & Aerosol-Cloud Interaction

    SciTech Connect (OSTI)

    Chiu, Jui-Yuan Christine

    2014-04-10

    This project focuses on cloud-radiation processes in a general three-dimensional cloud situation, with particular emphasis on cloud optical depth and effective particle size. The proposal has two main parts. Part one exploits the large number of new wavelengths offered by the Atmospheric Radiation Measurement (ARM) zenith-pointing ShortWave Spectrometer (SWS), to develop better retrievals not only of cloud optical depth but also of cloud particle size. We also take advantage of the SWS’ high sampling resolution to study the “twilight zone” around clouds where strong aerosol-cloud interactions are taking place. Part two involves continuing our cloud optical depth and cloud fraction retrieval research with ARM’s 2-channel narrow vield-of-view radiometer and sunphotometer instrument by, first, analyzing its data from the ARM Mobile Facility deployments, and second, making our algorithms part of ARM’s operational data processing.

  17. ARM: X-Band Scanning ARM Cloud Radar (X-SACR) Side-Looking Radar...

    Office of Scientific and Technical Information (OSTI)

    (BER) Country of Publication: United States Availability: ORNL Language: English Subject: 54 Environmental Sciences Cloud particle size distribution; Hydrometeor fall velocity; ...

  18. ARM: X-Band Scanning ARM Cloud Radar (W-SACR) Corner Reflector...

    Office of Scientific and Technical Information (OSTI)

    (BER) Country of Publication: United States Availability: ORNL Language: English Subject: 54 Environmental Sciences Cloud particle size distribution; Hydrometeor fall velocity; ...

  19. Fully Polarimetric Differential Intensity W-band Imager

    SciTech Connect (OSTI)

    Bernacki, Bruce E.; Tedeschi, Jonathan R.; Kelly, James F.; Sheen, David M.; Hall, Thomas E.; Valdez, Patrick LJ; Lechelt, Wayne M.; McMakin, Douglas L.

    2013-05-31

    We present a novel architecture based upon a Dicke-switched heterodyne radiometer architecture employing two identical input sections consisting of horn and orthomode transducer to detect the difference between the H and V polarization states of two separate object patches imaged by the radiometer. We have constructed and described previously a fully polarimetric W-band passive millimeter wave imager constructed to study the phenomenology of anomaly detection using polarimetric image exploitation of the Stokes images. The heterodyne radiometer used a PIN diode switch between the input millimeter wave energy and that of a reference load in order to eliminate the effects of component drifts and reduce the effects of 1/f noise. The differential approach differs from our previous work by comparing H and V polarization states detected by each of the two input horns instead of a reference load to form signals delta H and delta V from closely adjacent paired object patches. This novel imaging approach reduces common mode noise and enhances detection of small changes between the H and V polarization states of two object patches, now given as difference terms of the fully polarimetric radiometer. We present the theory of operation, initial proof of concept experimental results, and extension of the differential radiometer to a system with a binocular fore optics that allow adjustment of the convergence or shear of the object patches viewed by the differential polarimetric imager.

  20. ARM - Field Campaign - 2008 VAMOS Ocean-Cloud-Atmos-Land Study...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : 2008 VAMOS Ocean-Cloud-Atmos-Land Study (VOCALS) 2008.10.14 - 2008.11.13 Lead...

  1. Cloud properties derived from two lidars over the ARM SGP site

    SciTech Connect (OSTI)

    Dupont, Jean-Charles; Haeffelin, Martial; Morille, Y.; Comstock, Jennifer M.; Flynn, Connor J.; Long, Charles N.; Sivaraman, Chitra; Newsom, Rob K.

    2011-02-16

    [1] Active remote sensors such as lidars or radars can be used with other data to quantify the cloud properties at regional scale and at global scale (Dupont et al., 2009). Relative to radar, lidar remote sensing is sensitive to very thin and high clouds but has a significant limitation due to signal attenuation in the ability to precisely quantify the properties of clouds with a 20 cloud optical thickness larger than 3. In this study, 10-years of backscatter lidar signal data are analysed by a unique algorithm called STRucture of ATmosphere (STRAT, Morille et al., 2007). We apply the STRAT algorithm to data from both the collocated Micropulse lidar (MPL) and a Raman lidar (RL) at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site between 1998 and 2009. Raw backscatter lidar signal is processed and 25 corrections for detector deadtime, afterpulse, and overlap are applied. (Campbell et al.) The cloud properties for all levels of clouds are derived and distributions of cloud base height (CBH), top height (CTH), physical cloud thickness (CT), and optical thickness (COT) from local statistics are compared. The goal of this study is (1) to establish a climatology of macrophysical and optical properties for all levels of clouds observed over the ARM SGP site 30 and (2) to estimate the discrepancies induced by the two remote sensing systems (pulse energy, sampling, resolution, etc.). Our first results tend to show that the MPLs, which are the primary ARM lidars, have a distinctly limited range where all of these cloud properties are detectable, especially cloud top and cloud thickness, but even actual cloud base especially during summer daytime period. According to the comparisons between RL and MPL, almost 50% of situations show a signal to noise ratio too low (smaller than 3) for the MPL in order to detect clouds higher than 7km during daytime period in summer. Consequently, the MPLderived annual cycle of cirrus cloud base (top) altitude is biased low, especially for daylight periods, compared with those derived from the RL data, which detects 5 cloud base ranging from 7.5 km in winter to 9.5 km in summer (and tops ranging from 8.6 to 10.5 km). The optically thickest cirrus clouds (COT>0.3) reach 50% of the total population for the Raman lidar and only 20% for the Micropulse lidar due to the difference of pulse energy and the effect of solar irradiance contamination. A complementary study using the cloud fraction 10 derived from the Micropulse lidar for clouds below 5 km and from the Raman lidar for cloud above 5 km allows for better estimation of the total cloud fraction between the ground and the top of the atmosphere. This study presents the diurnal cycle of cloud fraction for each season in comparisons with the Long et al. (2006) cloud fraction calculation derived from radiative flux analysis.

  2. Application of Stochastic Radiative Transfer Theory to the ARM Cloud-Radiative Parameterization Problem

    SciTech Connect (OSTI)

    Dana E. Veron

    2012-04-09

    This project had two primary goals: (1) development of stochastic radiative transfer as a parameterization that could be employed in an AGCM environment, and (2) exploration of the stochastic approach as a means for representing shortwave radiative transfer through mixed-phase layer clouds. To achieve these goals, climatology of cloud properties was developed at the ARM CART sites, an analysis of the performance of the stochastic approach was performed, a simple stochastic cloud-radiation parameterization for an AGCM was developed and tested, a statistical description of Arctic mixed phase clouds was developed and the appropriateness of stochastic approach for representing radiative transfer through mixed-phase clouds was assessed. Significant progress has been made in all of these areas and is detailed in the final report.

  3. Automated retrieval of cloud and aerosol properties from the ARM Raman lidar, part 1: feature detection

    SciTech Connect (OSTI)

    Thorsen, Tyler J.; Fu, Qiang; Newsom, Rob K.; Turner, David D.; Comstock, Jennifer M.

    2015-11-01

    A Feature detection and EXtinction retrieval (FEX) algorithm for the Atmospheric Radiation Measurement (ARM) program’s Raman lidar (RL) has been developed. Presented here is part 1 of the FEX algorithm: the detection of features including both clouds and aerosols. The approach of FEX is to use multiple quantities— scattering ratios derived using elastic and nitro-gen channel signals from two fields of view, the scattering ratio derived using only the elastic channel, and the total volume depolarization ratio— to identify features using range-dependent detection thresholds. FEX is designed to be context-sensitive with thresholds determined for each profile by calculating the expected clear-sky signal and noise. The use of multiple quantities pro-vides complementary depictions of cloud and aerosol locations and allows for consistency checks to improve the accuracy of the feature mask. The depolarization ratio is shown to be particularly effective at detecting optically-thin features containing non-spherical particles such as cirrus clouds. Improve-ments over the existing ARM RL cloud mask are shown. The performance of FEX is validated against a collocated micropulse lidar and observations from the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite over the ARM Darwin, Australia site. While we focus on a specific lidar system, the FEX framework presented here is suitable for other Raman or high spectral resolution lidars.

  4. “Lidar Investigations of Aerosol, Cloud, and Boundary Layer Properties Over the ARM ACRF Sites”

    SciTech Connect (OSTI)

    Ferrare, Richard; Turner, David

    2015-01-13

    Project goals; Characterize the aerosol and ice vertical distributions over the ARM NSA site, and in particular to discriminate between elevated aerosol layers and ice clouds in optically thin scattering layers; Characterize the water vapor and aerosol vertical distributions over the ARM Darwin site, how these distributions vary seasonally, and quantify the amount of water vapor and aerosol that is above the boundary layer; Use the high temporal resolution Raman lidar data to examine how aerosol properties vary near clouds; Use the high temporal resolution Raman lidar and Atmospheric Emitted Radiance Interferometer (AERI) data to quantify entrainment in optically thin continental cumulus clouds; and Use the high temporal Raman lidar data to continue to characterize the turbulence within the convective boundary layer and how the turbulence statistics (e.g., variance, skewness) is correlated with larger scale variables predicted by models.

  5. Cloud Classes and Radiative Heating profiles at the Manus and Nauru Atmospheric Radiation Measurement (ARM) Sites

    SciTech Connect (OSTI)

    Mather, James H.; McFarlane, Sally A.

    2009-10-07

    The Tropical Western Pacific (TWP) is a convective regime; however, the frequency and depth of convection is dependant on dynamical forcing which exhibits variability on a range of temporal scales and also on location within the region. Manus Island, Papua New Guinea lies in the heart of the western Pacific warm pool region and exhibits frequent deep convection much of the time while Nauru, which lies approximately 20 degrees to the East of Manus, lies in a transition zone where the frequency of convection is dependent on the phase of the El Nino/Southern Oscillation. Because of this difference in dynamical regime, the distribution of clouds and the associated radiative heating is quite different at the two sites. Individual cloud types: boundary layer cumulus, thin cirrus, stratiform convective outflow, do occur at both sites – but with different frequencies. In this study we compare cloud profiles and heating profiles for specific cloud types at these two sites using data from the Atmospheric Radiation Measurement (ARM) Climate Research Facility (ACRF). Results of this comparison indicate that, while the frequency of specific cloud types differ between the two sites as one would expect, the characteristics of individual cloud classes are remarkably similar. This information could prove to be very useful for applying tropical ARM data to the broader region.

  6. arm_stm_2007_revercomb_poster_cloud.ppt

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Assessment Part 2: Cirrus Radiative Flux Study Using Radar/Lidar/AERI Derived Cloud Properties David Tobin, Lori Borg, David Turner, Robert Holz, Daniel DeSlover, Hank Revercomb, Bob Knuteson, Leslie Moy, Ed Eloranta, Jun Li Space Science and Engineering Center, University of Wisconsin-Madison Introduction: Previous related work by our group has focused on closure of the clear sky flux problem and providing assessment of and improvements for BBHRP in that regard (see Part 1). Here, our analyses

  7. Cloud Occurrence Frequency at the Barrow, Alaska, ARM Climate Research Facility for 2008 Third Quarter 2009 ARM and Climate Change Prediction Program Metric Report

    SciTech Connect (OSTI)

    M Jensen; K Johnson; JH Mather

    2009-07-14

    Clouds represent a critical component of the Earth’s atmospheric energy balance as a result of their interactions with solar and terrestrial radiation and a redistribution of heat through convective processes and latent heating. Despite their importance, clouds and the processes that control their development, evolution and lifecycle remain poorly understood. Consequently, the simulation of clouds and their associated feedbacks is a primary source of inter-model differences in equilibrium climate sensitivity. An important step in improving the representation of cloud process simulations is an improved high-resolution observational data set of the cloud systems including their time evolution. The first order quantity needed to understand the important role of clouds is the height of cloud occurrence and how it changes as a function of time. To this end, the Atmospheric Radiation Measurement (ARM) Climate Research Facilities (ACRF) suite of instrumentation has been developed to make the observations required to improve the representation of cloud systems in atmospheric models.

  8. ARM Cloud Aerosol Precipitation Experiment (ACAPEX) Science Plan

    SciTech Connect (OSTI)

    Leung, L. R.; Prather, K.; Ralph, R.; Rosenfeld, D.; Spackman, R.; DeMott, P.; Fairall, C.; Fan, J.; Hagos, S.; Hughes, M.; Long, C.; Rutledge, S.; Waliser, D.; Wang, H.

    2014-09-01

    The western U.S. receives precipitation predominantly during the cold season when storms approach from the Pacific Ocean. The snowpack that accumulates during winter storms provides about 70-90% of water supply for the region. Understanding and modeling the fundamental processes that govern the large precipitation variability and extremes in the western U.S. is a critical test for the ability of climate models to predict the regional water cycle, including floods and droughts. Two elements of significant importance in predicting precipitation variability in the western U.S. are atmospheric rivers and aerosols. Atmospheric rivers (ARs) are narrow bands of enhanced water vapor associated with the warm sector of extratropical cyclones over the Pacific and Atlantic oceans. Because of the large lower-tropospheric water vapor content, strong atmospheric winds and neutral moist static stability, some ARs can produce heavy precipitation by orographic enhancement during landfall on the U.S. West Coast. While ARs are responsible for a large fraction of heavy precipitation in that region during winter, much of the rest of the orographic precipitation occurs in post-frontal clouds, which are typically quite shallow, with tops just high enough to pass the mountain barrier. Such clouds are inherently quite susceptible to aerosol effects on both warm rain and ice precipitation-forming processes.

  9. Cloud Optical Properties from the Multifilter Shadowband Radiometer (MFRSRCLDOD): An ARM Value-Added Product

    SciTech Connect (OSTI)

    Turner, DD; McFarlane, SA; Riihimaki, L; Shi, Y; Lo, C; Min, Q

    2014-02-01

    The microphysical properties of clouds play an important role in studies of global climate change. Observations from satellites and surface-based systems have been used to infer cloud optical depth and effective radius. Min and Harrison (1996) developed an inversion method to infer the optical depth of liquid water clouds from narrow band spectral Multifilter Rotating Shadowband Radiometer (MFRSR) measurements (Harrison et al. 1994). Their retrieval also uses the total liquid water path (LWP) measured by a microwave radiometer (MWR) to obtain the effective radius of the warm cloud droplets. Their results were compared with Geostationary Operational Environmental Satellite (GOES) retrieved values at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site (Min and Harrison 1996). Min et al. (2003) also validated the retrieved cloud optical properties against in situ observations, showing that the retrieved cloud effective radius agreed well with the in situ forward scattering spectrometer probe observations. The retrieved cloud optical properties from Min et al. (2003) were used also as inputs to an atmospheric shortwave model, and the computed fluxes were compared with surface pyranometer observations.

  10. ARM - Midlatitude Continental Convective Clouds (comstock-hvps)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jensen, Mike; Comstock, Jennifer; Genio, Anthony Del; Giangrande, Scott; Kollias, Pavlos

    Convective processes play a critical role in the Earth's energy balance through the redistribution of heat and moisture in the atmosphere and their link to the hydrological cycle. Accurate representation of convective processes in numerical models is vital towards improving current and future simulations of Earths climate system. Despite improvements in computing power, current operational weather and global climate models are unable to resolve the natural temporal and spatial scales important to convective processes and therefore must turn to parameterization schemes to represent these processes. In turn, parameterization schemes in cloud-resolving models need to be evaluated for their generality and application to a variety of atmospheric conditions. Data from field campaigns with appropriate forcing descriptors have been traditionally used by modelers for evaluating and improving parameterization schemes.

  11. ARM - Midlatitude Continental Convective Clouds (comstock-hvps)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jensen, Mike; Comstock, Jennifer; Genio, Anthony Del; Giangrande, Scott; Kollias, Pavlos

    2012-01-06

    Convective processes play a critical role in the Earth's energy balance through the redistribution of heat and moisture in the atmosphere and their link to the hydrological cycle. Accurate representation of convective processes in numerical models is vital towards improving current and future simulations of Earths climate system. Despite improvements in computing power, current operational weather and global climate models are unable to resolve the natural temporal and spatial scales important to convective processes and therefore must turn to parameterization schemes to represent these processes. In turn, parameterization schemes in cloud-resolving models need to be evaluated for their generality and application to a variety of atmospheric conditions. Data from field campaigns with appropriate forcing descriptors have been traditionally used by modelers for evaluating and improving parameterization schemes.

  12. DEVELOPMENT OF IMPROVED TECHNIQUES FOR SATELLITE REMOTE SENSING OF CLOUDS AND RADIATION USING ARM DATA, FINAL REPORT

    SciTech Connect (OSTI)

    Minnis, Patrick

    2013-06-28

    During the period, March 1997 – February 2006, the Principal Investigator and his research team co-authored 47 peer-reviewed papers and presented, at least, 138 papers at conferences, meetings, and workshops that were supported either in whole or in part by this agreement. We developed a state-of-the-art satellite cloud processing system that generates cloud properties over the Atmospheric Radiation (ARM) surface sites and surrounding domains in near-real time and outputs the results on the world wide web in image and digital formats. When the products are quality controlled, they are sent to the ARM archive for further dissemination. These products and raw satellite images can be accessed at http://cloudsgate2.larc.nasa.gov/cgi-bin/site/showdoc?docid=4&cmd=field-experiment-homepage&exp=ARM and are used by many in the ARM science community. The algorithms used in this system to generate cloud properties were validated and improved by the research conducted under this agreement. The team supported, at least, 11 ARM-related or supported field experiments by providing near-real time satellite imagery, cloud products, model results, and interactive analyses for mission planning, execution, and post-experiment scientific analyses. Comparisons of cloud properties derived from satellite, aircraft, and surface measurements were used to evaluate uncertainties in the cloud properties. Multiple-angle satellite retrievals were used to determine the influence of cloud structural and microphysical properties on the exiting radiation field.

  13. Atmospheric Radiation Measurement (ARM) Data from the Eastern...

    Office of Scientific and Technical Information (OSTI)

    site will have significant enhancements to instruments previously deployed to the Azores, including a Ka-W-band scanning cloud radar, precipitation radar, and Doppler lidar. ...

  14. Intercomparison of model simulations of mixed-phase clouds observed during the ARM Mixed-Phase Arctic Cloud Experiment. Part I: Single layer cloud

    SciTech Connect (OSTI)

    Klein, S A; McCoy, R B; Morrison, H; Ackerman, A; Avramov, A; deBoer, G; Chen, M; Cole, J; DelGenio, A; Golaz, J; Hashino, T; Harrington, J; Hoose, C; Khairoutdinov, M; Larson, V; Liu, X; Luo, Y; McFarquhar, G; Menon, S; Neggers, R; Park, S; Poellot, M; von Salzen, K; Schmidt, J; Sednev, I; Shipway, B; Shupe, M; Spangenberg, D; Sud, Y; Turner, D; Veron, D; Falk, M; Foster, M; Fridlind, A; Walker, G; Wang, Z; Wolf, A; Xie, S; Xu, K; Yang, F; Zhang, G

    2008-02-27

    Results are presented from an intercomparison of single-column and cloud-resolving model simulations of a cold-air outbreak mixed-phase stratocumulus cloud observed during the Atmospheric Radiation Measurement (ARM) program's Mixed-Phase Arctic Cloud Experiment. The observed cloud occurred in a well-mixed boundary layer with a cloud top temperature of -15 C. The observed liquid water path of around 160 g m{sup -2} was about two-thirds of the adiabatic value and much greater than the mass of ice crystal precipitation which when integrated from the surface to cloud top was around 15 g m{sup -2}. The simulations were performed by seventeen single-column models (SCMs) and nine cloud-resolving models (CRMs). While the simulated ice water path is generally consistent with the observed values, the median SCM and CRM liquid water path is a factor of three smaller than observed. Results from a sensitivity study in which models removed ice microphysics indicate that in many models the interaction between liquid and ice-phase microphysics is responsible for the large model underestimate of liquid water path. Despite this general underestimate, the simulated liquid and ice water paths of several models are consistent with the observed values. Furthermore, there is some evidence that models with more sophisticated microphysics simulate liquid and ice water paths that are in better agreement with the observed values, although considerable scatter is also present. Although no single factor guarantees a good simulation, these results emphasize the need for improvement in the model representation of mixed-phase microphysics. This case study, which has been well observed from both aircraft and ground-based remote sensors, could be a benchmark for model simulations of mixed-phase clouds.

  15. Atmospheric Radiation Measurement (ARM) Data from Steamboat Springs, Colorado, for the Storm Peak Laboratory Cloud Property Validation Experiment (STORMVEX)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    In October 2010, the initial deployment of the second ARM Mobile Facility (AMF2) took place at Steamboat Springs, Colorado, for the Storm Peak Laboratory Cloud Property Validation Experiment (STORMVEX). The objective of this field campaign was to obtain data about liquid and mixed-phase clouds using AMF2 instruments in conjunction with Storm Peak Laboratory (located at an elevation of 3220 meters on Mt. Werner), a cloud and aerosol research facility operated by the Desert Research Institute. STORMVEX datasets are freely available for viewing and download. Users are asked to register with the ARM Archive; the user's email address is used from that time forward as the login name.

  16. Scanning ARM Cloud Radars. Part II: Data Quality Control and Processing

    SciTech Connect (OSTI)

    Kollias, Pavlos; Jo, Ieng; Borque, Paloma; Tatarevic, Aleksandra; Lamer, Katia; Bharadwaj, Nitin; Widener, Kevin B.; Johnson, Karen L.; Clothiaux, Eugene E.

    2014-03-01

    The Scanning ARM Cloud Radars (SACRs) are the primary instruments for documenting the four-dimensional structure and evolution of clouds within a 20-30 km radius from the ARM fixed and mobile sites. Here, the post-processing of the calibrated SACR measurements is discussed. First, a feature mask algorithm that objectively determines the presence of significant radar returns is described. The feature mask algorithm is based on the statistical properties of radar receiver noise. It accounts for atmospheric emission and is applicable even for SACR profiles with few or no signal-free range gates. Using the nearest-in-time atmospheric sounding, the SACR radar reflectivities are corrected for gaseous attenuation (water vapor and oxygen) using a line-by-line absorption model. Despite having a high pulse repetition frequency, the SACR has a narrow Nyquist velocity limit and thus Doppler velocity folding is commonly observed. An unfolding algorithm that makes use of a first guess for the true Doppler velocity using horizontal wind measurements from the nearest sounding is described. The retrieval of the horizontal wind profile from the HS-RHI SACR scan observations and/or nearest sounding is described. The retrieved horizontal wind profile can be used to adaptively configure SACR scan strategies that depend on wind direction. Several remaining challenges are discussed, including the removal of insect and second-trip echoes. The described algorithms significantly enhance SACR data quality and constitute an important step towards the utilization of SACR measurements for cloud research.

  17. Scanning ARM Cloud Radars. Part II: Data Quality Control and Processing

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect II: Data Quality Control and Processing Citation Details In-Document Search Title: Scanning ARM Cloud Radars. Part II: Data Quality Control and Processing Authors: Kollias P. ; Johnson K. ; Jo, I. ; Borque, P. ; Tatarevic, A. ; Lamer, K. ; Bharadwaj, N. ; Widener, K. ; Clothiaux, E. E. Publication Date: 2014-03-01 OSTI Identifier: 1143616 Report Number(s): BNL--105484-2014-JA R&D Project: 2015-BNL-EE630EECA-Budg; KP1701000 DOE Contract Number:

  18. ARM - Midlatitude Continental Convective Clouds - Single Column Model Forcing (xie-scm_forcing)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Xie, Shaocheng; McCoy, Renata; Zhang, Yunyan

    2012-10-25

    The constrained variational objective analysis approach described in Zhang and Lin [1997] and Zhang et al. [2001]was used to derive the large-scale single-column/cloud resolving model forcing and evaluation data set from the observational data collected during Midlatitude Continental Convective Clouds Experiment (MC3E), which was conducted during April to June 2011 near the ARM Southern Great Plains (SGP) site. The analysis data cover the period from 00Z 22 April - 21Z 6 June 2011. The forcing data represent an average over the 3 different analysis domains centered at central facility with a diameter of 300 km (standard SGP forcing domain size), 150 km and 75 km, as shown in Figure 1. This is to support modeling studies on various-scale convective systems.

  19. Validation of a radar doppler spectra simulator using measurements from the ARM cloud radars

    SciTech Connect (OSTI)

    Remillard, J.; Luke, E.; Kollias, P.

    2010-03-15

    The use of forward models as an alternative approach to compare models with observations contains advantages and challenges. Radar Doppler spectra simulators are not new; their application in high- resolution models with bin microphysics schemes could help to compare model output with the Doppler spectra recorded from the vertically pointing cloud radars at the ARM Climate Research Facility sites. The input parameters to a Doppler spectra simulator are both microphysical (e.g., particle size, shape, phase, and number concentration) and dynamical (e.g., resolved wind components and sub-grid turbulent kinetic energy). Libraries for spherical and non-spherical particles are then used to compute the backscattering cross-section and fall velocities, while the turbulence is parameterized as a Gaussian function with a prescribed width. The Signal-to-Noise Ratio (SNR) is used to determine the amount of noise added throughout the spectrum, and the spectral smoothing due to spectral averages is included to reproduce the averaging realized by cloud radars on successive returns. Thus, realistic Doppler spectra are obtained, and several parameters that relate to the morphological characteristics of the synthetically generated spectra are computed. Here, the results are compared to the new ARM microARSCL data products in an attempt to validate the simulator. Drizzling data obtained at the SGP site by the MMCR and the AMF site at Azores using the WACR are used to ensure the liquid part and the turbulence representation part of the simulator are properly accounted in the forward model.

  20. Scanning ARM Cloud Radars Part II: Data Quality Control and Processing

    SciTech Connect (OSTI)

    Kollias, Pavlos; Jo, Ieng; Borque, Paloma; Tatarevic, Aleksandra; Lamer, Katia; Bharadwaj, Nitin; Widener, Kevin B.; Johnson, Karen; Clothiaux, Eugene E.

    2014-03-01

    The Scanning ARM Cloud Radars (SACRs) are the primary instruments for documenting the four-dimensional structure and evolution of clouds within a 20-30 km radius from the ARM fixed and mobile sites. Here, the post-processing of the calibrated SACR measurements is discussed. First, a feature mask algorithm that objectively determines the presence of significant radar returns is described. The feature mask algorithm is based on the statistical properties of radar receiver noise. It accounts for atmospheric emission and is applicable even for SACR profiles with few or no signal-free range gates. Using the nearest-in-time atmospheric sounding, the SACR radar reflectivities are corrected for gaseous attenuation (water vapor and oxygen) using a line-by-line absorption model. Despite having a high pulse repetition frequency, the SACR has a narrow Nyquist velocity limit and thus Doppler velocity folding is commonly observed. An unfolding algorithm that makes use of a first guess for the true Doppler velocity using horizontal wind measurements from the nearest sounding is described. The retrieval of the horizontal wind profile from the Hemispherical Sky Range Height Indicator SACR scan observations and/or nearest sounding is described. The retrieved horizontal wind profile can be used to adaptively configure SACR scan strategies that depend on wind direction. Several remaining challenges are discussed, including the removal of insect and second-trip echoes. The described algorithms significantly enhance SACR data quality and constitute an important step towards the utilization of SACR measurements for cloud research.

  1. Validation of MODIS-Retrieved Cloud Fractions Using Whole Sky Imager Measurements at the Three ARM Sites

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    MODIS-Retrieved Cloud Fractions Using Whole Sky Imager Measurements at the Three ARM Sites Z. Li, M. C. Cribb, and F.-L. Chang Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland A. P. Trishchenko Canada Centre for Remote Sensing Ottawa, Ontario, Canada Introduction Given the importance of clouds in modulating the surface energy budget, it is critical to obtain accurate estimates of their fractional amount in the atmospheric column for use in modeling

  2. ARM Orientation: Overview and History

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    009 ARM Orientation 1 Warren Wiscombe ARM Chief Scientist Brookhaven & NASA ARM Orientation: ARM Orientation: Overview and History Overview and History Mar 2009 ARM Orientation 2 Mar 2007 ARM Orientation 2 ARM Chief Scientist Team ARM Chief Scientist Team Ric Cederwall Andy Vogelmann Sharon Zuhoski Yangang Liu Pavlos Kollias Mar 2009 ARM Orientation 3 Mar 2007 ARM Orientation 3 ARM in a nutshell ARM in a nutshell * Created to improve cloud and radiation physics and cloud simulation

  3. Derivation of Seasonal Cloud Properties at ARM-NSA from Multispectral...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    In this paper, the operational Clouds and the Earth's Radiant Energy System (CERES) cloud ... In Clouds and the Earth's Radiant Energy System (CERES) Algorithm Theoretical Basis ...

  4. COLLABORATIVE RESEARCH:USING ARM OBSERVATIONS & ADVANCED STATISTICAL TECHNIQUES TO EVALUATE CAM3 CLOUDS FOR DEVELOPMENT OF STOCHASTIC CLOUD-RADIATION

    SciTech Connect (OSTI)

    Somerville, Richard

    2013-08-22

    The long-range goal of several past and current projects in our DOE-supported research has been the development of new and improved parameterizations of cloud-radiation effects and related processes, using ARM data, and the implementation and testing of these parameterizations in global models. The main objective of the present project being reported on here has been to develop and apply advanced statistical techniques, including Bayesian posterior estimates, to diagnose and evaluate features of both observed and simulated clouds. The research carried out under this project has been novel in two important ways. The first is that it is a key step in the development of practical stochastic cloud-radiation parameterizations, a new category of parameterizations that offers great promise for overcoming many shortcomings of conventional schemes. The second is that this work has brought powerful new tools to bear on the problem, because it has been a collaboration between a meteorologist with long experience in ARM research (Somerville) and a mathematician who is an expert on a class of advanced statistical techniques that are well-suited for diagnosing model cloud simulations using ARM observations (Shen).

  5. Atmospheric Radiation Measurement (ARM) Data from the Eastern North Atlantic Site (ENA), Graciosa Island, Azores

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Wood, Robert

    From May 2009 through December 2010, the ARM Mobile Facility obtained data from a location near the airport on Graciosa Island to support the Clouds, Aerosol, and Precipitation in the Marine Boundary Layer (CAP-MBL) field campaign. The campaign was led by principal investigator Robert Wood. Results from this campaign confirmed that the Azores have the ideal mix of conditions to study how clouds, aerosols, and precipitation interact. This new observation site will have significant enhancements to instruments previously deployed to the Azores, including a Ka-/W-band scanning cloud radar, precipitation radar, and Doppler lidar. It has the full support of the Azorean government and collaborators at the University of the Azores. Los Alamos National Laboratory will operate the site for the ARM Facility.

  6. Cloud and aerosol characterization for the ARM central facility: Multiple remote sensor techniques development

    SciTech Connect (OSTI)

    Sassen, K.

    1992-04-30

    This research project designed to investigate how atmospheric remote sensing technology can best be applied to the characterization of the cloudy atmosphere. Our research program addresses basic atmospheric remote sensing questions, but at the same time is clearly directed toward providing information crucial to the ARM (Atmospheric Remote Sensing) program and for application to the Clouds and Radiation Testbed (CART). The instrumentation that is being brought into play includes a variety of art-of-the-art sensors. Available at NOAA WPL are polarization Doppler K{sub a}-band (0.86 mm) and X-band (3.2 cm) radars, a C0{sub 2}(10.6 {mu}m) Doppler lidar with sequential ' polarization measurement capabilities, a three-channel (20.6, 31.65 and 90 GHz) microwave radiometer, and variety of visible and infrared radiometers. Instrumentation at the University of Utah Facility for Atmospheric Remote Sensing (FARS) includes a polarization ruby (0.643 {mu}m) lidar, a narrow-beam (0.14{degree}) mid-infrared (9.5--11.5 {mu}m) radiometer coaligned with the lidar, several other radiometers in the visible and infrared spectral regions, and an advanced two-color (1.06 and 0.532 {mu}m), four-channel Polarization Diversity Lidar (PDL) and all-sky video imaging system that have only recently been developed under the ARM IDP.

  7. ARM - Publications: Science Team Meeting Documents: ARM SCM Intercompa...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ARM SCM Intercomparison Helps Find Cloud Parameterization Bug Klein, Stephen Lawrence Livermore National Laboratory The ARM Cloud Parameterization and Modeling working group has...

  8. ARM's efforts to address the need for 3D cloud and precipitation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2007 Multi-scale Observing Facility (MOF) - Whitepaper 2009 Steps forward: ARM-CASA Partnership ARM-GPM proposed field campaign Wind Profiler IOP Radar simulator...

  9. ARM - Measurement - Radar Doppler

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    quality assurance purposes. ARM Instruments CSAPR : C-Band ARM Precipitation Radar DL : Doppler Lidar KAZR : Ka ARM Zenith Radar KASACR : Ka-Band Scanning ARM Cloud Radar MWACR :...

  10. Atmospheric Radiation Measurement (ARM) Data from Los Angeles, California, to Honolulu, Hawaii for the Marine ARM GPCI Investigation of Clouds (MAGIC) Field Campaign (an AMF2 Deployment)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    From October 2012 through September 2013, the second ARM Mobile Facility (AMF2) was deployed on the container ship Spirit, operated by Horizon Lines, for the Marine ARM GPCI* Investigation of Clouds (MAGIC) field campaign. During approximately 20 round trips between Los Angeles, California, and Honolulu, Hawaii, AMF2 obtained continuous on-board measurements of cloud and precipitation, aerosols, and atmospheric radiation; surface meteorological and oceanographic variables; and atmospheric profiles from weather balloons launched every six hours. During two two-week intensive observational periods in January and July 2013, additional instruments were deployed and balloon soundings were be increased to every three hours. These additional data provided a more detailed characterization of the state of the atmosphere and its daily cycle during two distinctly different seasons. The primary objective of MAGIC was to improve the representation of the stratocumulus-to-cumulus transition in climate models. AMF2 data documented the small-scale physical processes associated with turbulence, convection, and radiation in a variety of marine cloud types.

  11. ARM - Measurements

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Deployment Operations Measurements SGP Data Plots NASA Data Plots ARM Data Discovery ... SPEC Humidity Diode Laser Hygrometer (DLH) NASA Turbulence AIMMS-20 SPEC Cloud Properties ...

  12. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    10, 2016 [Facility News] Opportunity for Cloud Properties Retrieval Algorithm Development: Request for Interest Opened Bookmark and Share The ARM Facility is seeking a scientific consultant to develop an operational cloud property algorithm, using data from ARM facilities and instruments like these scanning cloud radars. The ARM Facility is seeking a scientific consultant to develop an operational cloud property algorithm, using data from ARM facilities and instruments like these scanning cloud

  13. ARM: Microwave Radiometer data (MWR Profiles - QME), water vapor, temp, cloud liquid water, precip water retrievals

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Maria Cadeddu

    2004-02-19

    Microwave Radiometer data (MWR Profiles - QME), water vapor, temp, cloud liquid water, precip water retrievals

  14. ARM: Microwave Radiometer data (MWR Profiles - QME), water vapor, temp, cloud liquid water, precip water retrievals

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Maria Cadeddu

    Microwave Radiometer data (MWR Profiles - QME), water vapor, temp, cloud liquid water, precip water retrievals

  15. ARM - Journal Articles 2011

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... ratios provide constraints (Citation) Environmental Science & Technology Yes ARM ASR Dupont Cloud properties derived from two lidars over the ARM SGP site (Citation) Geophysical ...

  16. ARM - Midlatitude Continental Convective Clouds Microwave Radiometer Profiler (jensen-mwr)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jensen, Mike

    2012-02-01

    A major component of the Mid-latitude Continental Convective Clouds Experiment (MC3E) field campaign was the deployment of an enhanced radiosonde array designed to capture the vertical profile of atmospheric state variables (pressure, temperature, humidity wind speed and wind direction) for the purpose of deriving the large-scale forcing for use in modeling studies. The radiosonde array included six sites (enhanced Central Facility [CF-1] plus five new sites) launching radiosondes at 3-6 hour sampling intervals. The network will cover an area of approximately (300)2 km2 with five outer sounding launch sites and one central launch location. The five outer sounding launch sites are: S01 Pratt, KS [ 37.7oN, 98.75oW]; S02 Chanute, KS [37.674, 95.488]; S03 Vici, Oklahoma [36.071, -99.204]; S04 Morris, Oklahoma [35.687, -95.856]; and S05 Purcell, Oklahoma [34.985, -97.522]. Soundings from the SGP Central Facility during MC3E can be retrieved from the regular ARM archive. During routine MC3E operations 4 radiosondes were launched from each of these sites (approx. 0130, 0730, 1330 and 1930 UTC). On days that were forecast to be convective up to four additional launches were launched at each site (approx. 0430, 1030, 1630, 2230 UTC). There were a total of approximately 14 of these high frequency launch days over the course of the experiment. These files contain brightness temperatures observed at Purcell during MC3E. The measurements were made with a 5 channel (22.235, 23.035, 23.835, 26.235, 30.000GHz) microwave radiometer at one minute intervals. The results have been separated into daily files and the day of observations is indicated in the file name. All observations were zenith pointing. Included in the files are the time variables base_time and time_offset. These follow the ARM time conventions. Base_time is the number seconds since January 1, 1970 at 00:00:00 for the first data point of the file and time_offset is the offset in seconds from base_time.

  17. ARM - Midlatitude Continental Convective Clouds - Ultra High Sensitivity Aerosol Spectrometer(tomlinson-uhsas)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Tomlinson, Jason; Jensen, Mike

    2012-02-28

    Ultra High Sensitivity Aerosol Spectrometer (UHSASA) A major component of the Mid-latitude Continental Convective Clouds Experiment (MC3E) field campaign was the deployment of an enhanced radiosonde array designed to capture the vertical profile of atmospheric state variables (pressure, temperature, humidity wind speed and wind direction) for the purpose of deriving the large-scale forcing for use in modeling studies. The radiosonde array included six sites (enhanced Central Facility [CF-1] plus five new sites) launching radiosondes at 3-6 hour sampling intervals. The network will cover an area of approximately (300)2 km2 with five outer sounding launch sites and one central launch location. The five outer sounding launch sites are: S01 Pratt, KS [ 37.7oN, 98.75oW]; S02 Chanute, KS [37.674, 95.488]; S03 Vici, Oklahoma [36.071, -99.204]; S04 Morris, Oklahoma [35.687, -95.856]; and S05 Purcell, Oklahoma [34.985, -97.522]. Soundings from the SGP Central Facility during MC3E can be retrieved from the regular ARM archive. During routine MC3E operations 4 radiosondes were launched from each of these sites (approx. 0130, 0730, 1330 and 1930 UTC). On days that were forecast to be convective up to four additional launches were launched at each site (approx. 0430, 1030, 1630, 2230 UTC). There were a total of approximately 14 of these high frequency launch days over the course of the experiment. These files contain brightness temperatures observed at Purcell during MC3E. The measurements were made with a 5 channel (22.235, 23.035, 23.835, 26.235, 30.000GHz) microwave radiometer at one minute intervals. The results have been separated into daily files and the day of observations is indicated in the file name. All observations were zenith pointing. Included in the files are the time variables base_time and time_offset. These follow the ARM time conventions. Base_time is the number seconds since January 1, 1970 at 00:00:00 for the first data point of the file and time_offset is the offset in seconds from base_time.

  18. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    24, 2008 [Facility News] New Leadership Announced for ARM Working Groups Bookmark and Share Matthew Shupe and Ann Fridlind are the new leaders of the ARM Cloud Properties and Cloud Modeling Working Groups, respectively. Matthew Shupe and Ann Fridlind are the new leaders of the ARM Cloud Properties and Cloud Modeling Working Groups, respectively. Hats off to Matthew Shupe and Ann Fridlind, newly announced leaders of the Cloud Properties and Cloud Modeling Working Groups, respectively. Matthew

  19. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    cloud products and the ARM SGP observation for individual cirrus cloud and stratus cloud cases. At the same time, statistical comparison of optically thin cirrus clouds is also...

  20. ARM - Instrument - sacr

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    : Scanning ARM cloud radar (SACR) Instrument Categories Cloud Properties Contact(s) Karen Johnson Brookhaven National Laboratory (631) 344-5952 kjohnson@bnl.gov Nitin...

  1. ARM - Journal Articles 2006

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Measurement Program Climate Research Facility: 2. vertical redistribution of radiant energy by clouds (Citation) Journal of Geophysical Research ARM Mace Cloud radiative ...

  2. A Comparison of ARM Cloud Radar Profiles with MMF Simulated Radar...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    state, and did the same for the model output. - By profiles of cloud occurrence, we mean (at given altitude above ground level) the relative frequency that a cloud was...

  3. Field Evaluation of Real-time Cloud OD Sensor TWST during the DOE ARM TCAP Campaign 2013 Final Campaign Report

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    8 Field Evaluation of Real-time Cloud OD Sensor TWST during the DOE ARM TCAP Campaign 2013 Final Campaign Report E Niple H Scott J Conant F Iannarilli S Jones February 2016 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information,

  4. Determination of Large-Scale Cloud Ice Water Concentration by Combining Surface Radar and Satellite Data in Support of ARM SCM Activities

    SciTech Connect (OSTI)

    Liu, Guosheng

    2013-03-15

    Single-column modeling (SCM) is one of the key elements of Atmospheric Radiation Measurement (ARM) research initiatives for the development and testing of various physical parameterizations to be used in general circulation models (GCMs). The data required for use with an SCM include observed vertical profiles of temperature, water vapor, and condensed water, as well as the large-scale vertical motion and tendencies of temperature, water vapor, and condensed water due to horizontal advection. Surface-based measurements operated at ARM sites and upper-air sounding networks supply most of the required variables for model inputs, but do not provide the horizontal advection term of condensed water. Since surface cloud radar and microwave radiometer observations at ARM sites are single-point measurements, they can provide the amount of condensed water at the location of observation sites, but not a horizontal distribution of condensed water contents. Consequently, observational data for the large-scale advection tendencies of condensed water have not been available to the ARM cloud modeling community based on surface observations alone. This lack of advection data of water condensate could cause large uncertainties in SCM simulations. Additionally, to evaluate GCMs’ cloud physical parameterization, we need to compare GCM results with observed cloud water amounts over a scale that is large enough to be comparable to what a GCM grid represents. To this end, the point-measurements at ARM surface sites are again not adequate. Therefore, cloud water observations over a large area are needed. The main goal of this project is to retrieve ice water contents over an area of 10 x 10 deg. surrounding the ARM sites by combining surface and satellite observations. Built on the progress made during previous ARM research, we have conducted the retrievals of 3-dimensional ice water content by combining surface radar/radiometer and satellite measurements, and have produced 3-D cloud ice water contents in support of cloud modeling activities. The approach of the study is to expand a (surface) point measurement to an (satellite) area measurement. That is, the study takes the advantage of the high quality cloud measurements (particularly cloud radar and microwave radiometer measurements) at the point of the ARM sites. We use the cloud ice water characteristics derived from the point measurement to guide/constrain a satellite retrieval algorithm, then use the satellite algorithm to derive the 3-D cloud ice water distributions within an 10° (latitude) x 10° (longitude) area. During the research period, we have developed, validated and improved our cloud ice water retrievals, and have produced and archived at ARM website as a PI-product of the 3-D cloud ice water contents using combined satellite high-frequency microwave and surface radar observations for SGP March 2000 IOP and TWP-ICE 2006 IOP over 10 deg. x 10 deg. area centered at ARM SGP central facility and Darwin sites. We have also worked on validation of the 3-D ice water product by CloudSat data, synergy with visible/infrared cloud ice water retrievals for better results at low ice water conditions, and created a long-term (several years) of ice water climatology in 10 x 10 deg. area of ARM SGP and TWP sites and then compared it with GCMs.

  5. Environmental assessment for the Atmospheric Radiation Measurement (ARM) Program: Southern Great Plains Cloud and Radiation Testbed (CART) site

    SciTech Connect (OSTI)

    Policastro, A.J.; Pfingston, J.M.; Maloney, D.M.; Wasmer, F.; Pentecost, E.D.

    1992-03-01

    The Atmospheric Radiation Measurement (ARM) Program is aimed at supplying improved predictive capability of climate change, particularly the prediction of cloud-climate feedback. The objective will be achieved by measuring the atmospheric radiation and physical and meteorological quantities that control solar radiation in the earth`s atmosphere and using this information to test global climate and related models. The proposed action is to construct and operate a Cloud and Radiation Testbed (CART) research site in the southern Great Plains as part of the Department of Energy`s Atmospheric Radiation Measurement Program whose objective is to develop an improved predictive capability of global climate change. The purpose of this CART research site in southern Kansas and northern Oklahoma would be to collect meteorological and other scientific information to better characterize the processes controlling radiation transfer on a global scale. Impacts which could result from this facility are described.

  6. Scanning Cloud Radar Observations at Azores: Preliminary 3D Cloud Products

    SciTech Connect (OSTI)

    Kollias, P.; Johnson, K.; Jo, I.; Tatarevic, A.; Giangrande, S.; Widener, K.; Bharadwaj, N.; Mead, J.

    2010-03-15

    The deployment of the Scanning W-Band ARM Cloud Radar (SWACR) during the AMF campaign at Azores signals the first deployment of an ARM Facility-owned scanning cloud radar and offers a prelude for the type of 3D cloud observations that ARM will have the capability to provide at all the ARM Climate Research Facility sites by the end of 2010. The primary objective of the deployment of Scanning ARM Cloud Radars (SACRs) at the ARM Facility sites is to map continuously (operationally) the 3D structure of clouds and shallow precipitation and to provide 3D microphysical and dynamical retrievals for cloud life cycle and cloud-scale process studies. This is a challenging task, never attempted before, and requires significant research and development efforts in order to understand the radar's capabilities and limitations. At the same time, we need to look beyond the radar meteorology aspects of the challenge and ensure that the hardware and software capabilities of the new systems are utilized for the development of 3D data products that address the scientific needs of the new Atmospheric System Research (ASR) program. The SWACR observations at Azores provide a first look at such observations and the challenges associated with their analysis and interpretation. The set of scan strategies applied during the SWACR deployment and their merit is discussed. The scan strategies were adjusted for the detection of marine stratocumulus and shallow cumulus that were frequently observed at the Azores deployment. Quality control procedures for the radar reflectivity and Doppler products are presented. Finally, preliminary 3D-Active Remote Sensing of Cloud Locations (3D-ARSCL) products on a regular grid will be presented, and the challenges associated with their development discussed. In addition to data from the Azores deployment, limited data from the follow-up deployment of the SWACR at the ARM SGP site will be presented. This effort provides a blueprint for the effort required for the development of 3D cloud products from all new SACRs that the program will deploy at all fixed and mobile sites by the end of 2010.

  7. ARM News

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Regime Dependence of Cloud Water Variability Observed at the ARM Sites Wed, 11 May 2016 10:35:54 +0000 Research Highlights http://www.arm.gov/science/highlights/RNjc2/view <img src="http://www.arm.gov/science/highlights/images/thumbnails/thumb_R00676_1.png:100" style="float:left;margin-right:5px;margin-bottom:5px"/><p>Observations from ARM sites across the world have improved our understanding of how the amount of water in clouds varies at small scales. Based on

  8. ARM - Routine AAF Clouds with Low Optical Water Depths (CLOWD) Optical

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Radiative Observations (RACORO) Related Links RACORO Home AAF Home ARM Data Discovery Browse Data Post-Campaign Data Sets Data Guide (PDF, 1.4MB) Campaign Journal Flight Details Images ARM flickr site Deployment Operations Measurements Science & Operations Plan (PDF, 640K) SGP Data Plots RACORO wiki Login Required Experiment Planning Steering Committee Science Questions RACORO Proposal Abstract Full Proposal (PDF, 886K) Collaborations Meetings CLOWD Working Group News Discovery Channel

  9. Application of Stochastic Radiative Transfer Theory to the ARM Cloud-Radiative Parameterization Problem

    SciTech Connect (OSTI)

    Veron, Dana E

    2009-03-12

    This project had two primary goals: 1) development of stochastic radiative transfer as a parameterization that could be employed in an AGCM environment, and 2) exploration of the stochastic approach as a means for representing shortwave radiative transfer through mixed-phase layer clouds. To achieve these goals, an analysis of the performance of the stochastic approach was performed, a simple stochastic cloud-radiation parameterization for an AGCM was developed and tested, a statistical description of Arctic mixed phase clouds was developed and the appropriateness of stochastic approach for representing radiative transfer through mixed-phase clouds was assessed. Significant progress has been made in all of these areas and is detailed below.

  10. Simulation of Frontal Clouds Using the NCAR CAM3 during the ARM...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of New York at Stony Brook Wu, Jingbo Stony Brook University Category: Modeling A case study is carried out to simulate the March 2-3 frontal clouds with the NCAR CAM3 as...

  11. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    4, 2012 [Facility News] New Organization to Optimize ARM Radar Data Bookmark and Share Every ARM fixed and mobile site now includes both scanning (left) and zenith-pointing (right) cloud radars. The fixed sites also include scanning precipitation radars. Every ARM fixed and mobile site now includes both scanning (left) and zenith-pointing (right) cloud radars. The fixed sites also include scanning precipitation radars. In the past few years, the ARM Facility added 19 new scanning cloud and

  12. Final Report - Satellite Calibration and Verification of Remotely Sensed Cloud and Radiation Properties Using ARM UAV Data (February 28, 1995 - February 28, 1998)

    SciTech Connect (OSTI)

    Minnis, Patrick

    1998-02-28

    The work proposed under this agreement was designed to validate and improve remote sensing of cloud and radiation properties in the atmosphere for climate studies with special emphasis on the use of satellites for monitoring these parameters to further the goals of the Atmospheric Radiation Measurement (ARM) Program.

  13. Cloud and aerosol characterization for the ARM central facility: Multiple remote sensor techniques development. Technical progress report

    SciTech Connect (OSTI)

    Sassen, K.

    1992-04-30

    This research project designed to investigate how atmospheric remote sensing technology can best be applied to the characterization of the cloudy atmosphere. Our research program addresses basic atmospheric remote sensing questions, but at the same time is clearly directed toward providing information crucial to the ARM (Atmospheric Remote Sensing) program and for application to the Clouds and Radiation Testbed (CART). The instrumentation that is being brought into play includes a variety of art-of-the-art sensors. Available at NOAA WPL are polarization Doppler K{sub a}-band (0.86 mm) and X-band (3.2 cm) radars, a C0{sub 2}(10.6 {mu}m) Doppler lidar with sequential ` polarization measurement capabilities, a three-channel (20.6, 31.65 and 90 GHz) microwave radiometer, and variety of visible and infrared radiometers. Instrumentation at the University of Utah Facility for Atmospheric Remote Sensing (FARS) includes a polarization ruby (0.643 {mu}m) lidar, a narrow-beam (0.14{degree}) mid-infrared (9.5--11.5 {mu}m) radiometer coaligned with the lidar, several other radiometers in the visible and infrared spectral regions, and an advanced two-color (1.06 and 0.532 {mu}m), four-channel Polarization Diversity Lidar (PDL) and all-sky video imaging system that have only recently been developed under the ARM IDP.

  14. ARM - Data Announcements Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    August 31, 2011 [Data Announcements] ARM Cloud Retrieval Ensemble Data Set Available for Evaluation Bookmark and Share Multiple long-term cloud retrievals are now available for five ARM sites in the ACRED data set. Multiple long-term cloud retrievals are now available for five ARM sites in the ACRED data set. A new ARM evaluation product, the ARM Cloud Retrieval Ensemble Data Set (ACRED), is now available for testing by the science community. ACRED was developed with the motivation to provide a

  15. ARM - Events Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    February 29, 2016 [Events, Facility News] ASR Marine Low Clouds Workshop Held Bookmark and Share A drizzling marine stratocumulus cloud over the Northeast Pacific Ocean taken during Leg 17 of the Marine ARM GPCI Investigation of Clouds (MAGIC) Campaign. A drizzling marine stratocumulus cloud over the Northeast Pacific Ocean taken during Leg 17 of the Marine ARM GPCI Investigation of Clouds (MAGIC) Campaign. While they may not elicit the excitement and drama of their deeper, more-intense, sibling

  16. DOE/SC-ARM/TR-098 Micropulse Lidar Cloud Mask Value-Added Product Technical Report

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    8 Micropulse Lidar Cloud Mask Value-Added Product Technical Report C Sivaraman J Comstock July 2011 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would

  17. DOE/SC-ARM/TR-103 Cloud Condensation Nuclei Profile Value-Added

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    3 Cloud Condensation Nuclei Profile Value-Added Product S McFarlane C Sivaraman S Ghan October 2012 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would

  18. DOE/SC-ARM-14-012 The Mid-latitude Continental Convective Clouds

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2 The Mid-latitude Continental Convective Clouds (MC3E) Experiment Final Campaign Report M Jensen P Kollias S Giangrande April 2014 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed,

  19. doe sc arm 15 056 UCSD Sky Imager Cloud Position Study_formatted

    Office of Scientific and Technical Information (OSTI)

    56 University of California, San Diego (UCSD) Sky Imager Cloud Position Study Field Campaign Report J Kleissl B Urquhart M Ghonima E Dahlin A Nguyen B Kurtz CW Chow FA Mejia April 2016 CLIMATE RESEARCH FACILITY DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy,

  20. doe sc arm 16 025 The Radar Wind Profiler for Cloud Forecasting at BNL_formatted

    Office of Scientific and Technical Information (OSTI)

    5 Radar Wind Profiler for Cloud Forecasting at Brookhaven National Laboratory (BNL) Field Campaign Report MP Jensen SE Giangrande MJ Bartholomew April 2016 CLIMATE RESEARCH FACILITY DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any

  1. ARM - Publications: Science Team Meeting Documents: The impact of Cloud and

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Radiation on the Great Plains Climate Change during 1981-2003 The impact of Cloud and Radiation on the Great Plains Climate Change during 1981-2003 Popham, Julie University of North Dakota The global average air surface temperature has increased about 0.6oC over the 20th century (Houghton et al. 2001). This warming has resulted in a 10% decrease in the extent of snow cover observed from satellite, and about two weeks reduction in the annual duration of lake and river ice cover in the mid-

  2. DOE/SC-ARM-10-021 STORMVEX: The Storm Peak Lab Cloud Property Validation Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1 STORMVEX: The Storm Peak Lab Cloud Property Validation Experiment Science and Operations Plan J Mace Principal Investigator S Matrosov B Orr M Shupe R Coulter P Lawson A Sedlacek G Hallar L Avallone I McCubbin C Long R Marchand September 2010 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or

  3. ARM - Journal Articles 2008

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... An evaluation of operational GOES-derived single-layer cloud top heights with ARSCL data over the ARM Southern Great Plains Site (Citation) Geophysical Research Letters ARM Dupont ...

  4. DOE/SC-ARM-XXXX DOE/SC-ARM-0706 DOE/SC-ARM-0805

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    XXXX DOE/SC-ARM-0706 DOE/SC-ARM-0805 3 Table of Contents Program Overview ............................................................................................................................................................ 4 The Importance of Clouds and Radiation for Climate Change .................................................................................... 4 ARM Climate Research Facility

  5. ARM - Campaign Instrument - aosmet

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsaosmet Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Meteorological Measurements associated with the Aerosol Observing System (AOSMET) Instrument Categories Surface Meteorology Campaigns ARM Cloud Aerosol Precipitation Experiment (ACAPEX) [ Download Data ] ACAPEX (ARM Cloud Aerosol Precip Experiment); Mobile Facility, 2015.01.14 - 2015.02.12 Biogenic Aerosols - Effects on Clouds and Climate [ Download Data ]

  6. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cloud Animation Joins Learning Tools on Science Education Website Bookmark and Share ARM's tropical convective clouds animation illustrates the difference between tropical cloud systems that form over islands versus over the ocean. A primary focus of ARM Education and Outreach is to develop basic science awareness and increase critical thinking skills focusing on environmental science and climate change for K-12 students. Though their efforts primarily focus on the communities that host ARM

  7. ARM - Campaign Instrument - aos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsaos Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Aerosol Observing System (AOS) Instrument Categories Aerosols Campaigns 2007 Cumulus Humilis Aerosol Process Study (CHAPS) [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2007.06.04 - 2007.06.25 ARM Cloud Aerosol Precipitation Experiment (ACAPEX) [ Download Data ] ACAPEX (ARM Cloud Aerosol Precip Experiment); Mobile Facility, 2015.01.14

  8. ARM - Data Announcements Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    November 1, 2012 [Data Announcements] New Flagship Data Product Launched Bookmark and Share Climate Modeling Best Estimate Transitioned to ARM Best Estimate Data plot from ARM Best Estimate Cloud Radiation VAP demonstrating cloud fraction at Darwin for 2010. The ARM showcase data set CMBE, previously released as an evaluation product, transitioned to an ARM production data set and became the first two products of the new ARMBE value-added product. The new flagship ARMBE product name will

  9. ARM - Education Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    4, 2006 [Education] ARM Scientists Visit Darwin Schools During the Tropical Warm Pool - International Cloud Experiment Bookmark and Share ARM scientists and graduate students visited a classroom at Wagaman Primary School in Darwin during the two-month TWP-ICE field campaign. Many students and teachers in the Darwin community received first-hand information about ARM research and the exciting Tropical Warm Pool-International Cloud Experiment that took place in January and February this year. ARM

  10. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    June 1, 2015 [Facility News] BAMS Features Results of 21-Month ARM Deployment Bookmark and Share Low clouds were observed typically at the Graciosa site during the 21-month ARM Mobile Facility deployment. Low clouds were observed typically at the Graciosa site during the 21-month ARM Mobile Facility deployment. Featured in the March 2015 Bulletin of the American Meteorological Society (BAMS), the 21-month ARM mobile facility deployment in the Azores was the longest of its type in a non-tropical

  11. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    as remote measurements. Between September 7-9, ARM researchers and international collaborators involved in flight operations for the Tropical Warm Pool International Cloud...

  12. ARM - Measurement - Atmospheric turbulence

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System KASACR : Ka-Band Scanning ARM Cloud Radar SODAR : Mini Sound Detection and Ranging RWP...

  13. ARM - Campaign Instrument - psr

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    call us at 1-888-ARM-DATA. Send Campaign Instrument : Polarimetric Scanning Radiometer (PSR) Instrument Categories Radiometric, Surface Meteorology Campaigns Cloud LAnd Surface...

  14. ARM - Meetings and Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    528K) Jennifer Comstock, Chaomei Lo, Tim Shippert, Sally McFarlane, Eli Mlawer, David Turner, Andy Vogelmann, and Mandy Khaiyer RACORO: Routine ARM Aerial Facility (AAF) Clouds...

  15. ARM - Campaign Instrument - mas

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    below or call us at 1-888-ARM-DATA. Send Campaign Instrument : NASA MODIS Airborne Simulator (MAS) Instrument Categories Airborne Observations, Radiometric Campaigns Cloud LAnd...

  16. ARM - Fact Sheets

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Measurement Platforms PNNL WRF-CuP Forecast Cloud Physics Lidar MODIS Airborne Simulator Data Mesonet Monitoring ARM Data Plots Experiment Planning CLASIC Proposal Abstract...

  17. ARM - CLASIC News & Press

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Measurement Platforms PNNL WRF-CuP Forecast Cloud Physics Lidar MODIS Airborne Simulator Data Mesonet Monitoring ARM Data Plots Experiment Planning CLASIC Proposal Abstract...

  18. ARM - Campaign Instrument - mwrp

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Categories Atmospheric Profiling, Cloud Properties, Radiometric Campaigns ARM-FIRE Water Vapor Experiment Download Data Southern Great Plains, 2000.11.01 - 2000.12.31...

  19. ARM - Datastreams - xsacrhsrhi

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Send Datastream : XSACRHSRHI X-Band Scanning ARM Cloud Radar (XSACR) Hemispherical Sky RHI Scans (6 horizon-to-horizon scans at 30-degree azimuth intervals) Active Dates...

  20. ARM - Campaign Instrument - pdi

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Phase Doppler Interferometer (PDI) Instrument Categories Airborne Observations, Cloud Properties...

  1. ARM - Campaign Instrument - twst

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1-888-ARM-DATA. Send Campaign Instrument : Three Waveband Spectrally-agile Technique Sensor (TWST) Instrument Categories Atmospheric Profiling, Cloud Properties, Radiometric...

  2. Use of ARM/NSA Data to Validate and Improve the Remote Sensing Retrieval of Cloud and Surface Properties in the Arctic from AVHRR Data

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ARM/NSA Data to Validate and Improve the Remote Sensing Retrieval of Cloud and Surface Properties in the Arctic from AVHRR Data X. Xiong QSS Group, Inc. National Oceanic and Atmospheric Administration National Environmental Satellite, Data, and Information Service Office of Research and Applications Camp Springs, Maryland R. Storvold and C. Marty Geophysical Institute University of Alaska Fairbanks, Alaska K. H. Stamnes Stevens Institute of Technology Hoboken, New Jersey B. D. Zak Sandia

  3. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, Parcivel Disdrometer (williams-disdro)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Williams, Christopher; Jensen, Mike

    2012-11-06

    This data was collected by the NOAA 449-MHz and 2.8-GHz profilers in support of the Department of Energy (DOE) and NASA sponsored Mid-latitude Continental Convective Cloud Experiment (MC3E). The profiling radars were deployed in Northern Oklahoma at the DOE Atmospheric Radiation Mission (ARM) Southern Great Plans (SGP) Central Facility from 22 April through 6 June 2011. NOAA deployed three instruments: a Parsivel disdrometer, a 2.8-GHz profiler, and a 449-MHz profiler. The parasivel provided surface estimates of the raindrop size distribution and is the reference used to absolutely calibrate the 2.8 GHz profiler. The 2.8-GHz profiler provided unattenuated reflectivity profiles of the precipitation. The 449-MHz profiler provided estimates of the vertical air motion during precipitation from near the surface to just below the freezing level. By using the combination of 2.8-GHz and 449-MHz profiler observations, vertical profiles of raindrop size distributions can be retrieved. The profilers are often reference by their frequency band: the 2.8-GHz profiler operates in the S-band and the 449-MHz profiler operates in the UHF band. The raw observations are available as well as calibrated spectra and moments. This document describes how the instruments were deployed, how the data was collected, and the format of the archived data.

  4. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, Surface Meteorology (williams-surfmet)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Williams, Christopher; Jensen, Mike

    2012-11-06

    This data was collected by the NOAA 449-MHz and 2.8-GHz profilers in support of the Department of Energy (DOE) and NASA sponsored Mid-latitude Continental Convective Cloud Experiment (MC3E). The profiling radars were deployed in Northern Oklahoma at the DOE Atmospheric Radiation Mission (ARM) Southern Great Plans (SGP) Central Facility from 22 April through 6 June 2011. NOAA deployed three instruments: a Parsivel disdrometer, a 2.8-GHz profiler, and a 449-MHz profiler. The parasivel provided surface estimates of the raindrop size distribution and is the reference used to absolutely calibrate the 2.8 GHz profiler. The 2.8-GHz profiler provided unattenuated reflectivity profiles of the precipitation. The 449-MHz profiler provided estimates of the vertical air motion during precipitation from near the surface to just below the freezing level. By using the combination of 2.8-GHz and 449-MHz profiler observations, vertical profiles of raindrop size distributions can be retrieved. The profilers are often reference by their frequency band: the 2.8-GHz profiler operates in the S-band and the 449-MHz profiler operates in the UHF band. The raw observations are available as well as calibrated spectra and moments. This document describes how the instruments were deployed, how the data was collected, and the format of the archived data.

  5. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, 449 MHz Profiler(williams-449_prof)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Williams, Christopher; Jensen, Mike

    2012-11-06

    This data was collected by the NOAA 449-MHz and 2.8-GHz profilers in support of the Department of Energy (DOE) and NASA sponsored Mid-latitude Continental Convective Cloud Experiment (MC3E). The profiling radars were deployed in Northern Oklahoma at the DOE Atmospheric Radiation Mission (ARM) Southern Great Plans (SGP) Central Facility from 22 April through 6 June 2011. NOAA deployed three instruments: a Parsivel disdrometer, a 2.8-GHz profiler, and a 449-MHz profiler. The parasivel provided surface estimates of the raindrop size distribution and is the reference used to absolutely calibrate the 2.8 GHz profiler. The 2.8-GHz profiler provided unattenuated reflectivity profiles of the precipitation. The 449-MHz profiler provided estimates of the vertical air motion during precipitation from near the surface to just below the freezing level. By using the combination of 2.8-GHz and 449-MHz profiler observations, vertical profiles of raindrop size distributions can be retrieved. The profilers are often reference by their frequency band: the 2.8-GHz profiler operates in the S-band and the 449-MHz profiler operates in the UHF band. The raw observations are available as well as calibrated spectra and moments. This document describes how the instruments were deployed, how the data was collected, and the format of the archived data.

  6. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, Vertical Air Motion (williams-vertair)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Williams, Christopher; Jensen, Mike

    2012-11-06

    This data was collected by the NOAA 449-MHz and 2.8-GHz profilers in support of the Department of Energy (DOE) and NASA sponsored Mid-latitude Continental Convective Cloud Experiment (MC3E). The profiling radars were deployed in Northern Oklahoma at the DOE Atmospheric Radiation Mission (ARM) Southern Great Plans (SGP) Central Facility from 22 April through 6 June 2011. NOAA deployed three instruments: a Parsivel disdrometer, a 2.8-GHz profiler, and a 449-MHz profiler. The parasivel provided surface estimates of the raindrop size distribution and is the reference used to absolutely calibrate the 2.8 GHz profiler. The 2.8-GHz profiler provided unattenuated reflectivity profiles of the precipitation. The 449-MHz profiler provided estimates of the vertical air motion during precipitation from near the surface to just below the freezing level. By using the combination of 2.8-GHz and 449-MHz profiler observations, vertical profiles of raindrop size distributions can be retrieved. The profilers are often reference by their frequency band: the 2.8-GHz profiler operates in the S-band and the 449-MHz profiler operates in the UHF band. The raw observations are available as well as calibrated spectra and moments. This document describes how the instruments were deployed, how the data was collected, and the format of the archived data.

  7. ARM - VAP Process - ccnprof

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productsccnprof Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : Cloud Condensation Nuclei Profile (CCNPROF) Instrument Categories Aerosols, Derived Quantities and Models The cloud condensation nuclei (CCN) concentration at cloud base is the most relevant measure of the aerosol that influences droplet formation in clouds.

  8. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Infrared Thermometers Complete Cloud Pictures Bookmark and Share Extended Facilities at the SGP are spaced far enough apart that they do not have overlapping views overhead. This separation allows the infrared thermometers to obtain specific measurements for individual cloud cases. To help ARM scientists analyze cloud temperatures and infer cloud heights over the ARM Climate Research Facility Southern Great Plains (SGP) site, operations staff are installing six new infrared thermometers (IRTs)

  9. ARM - Sponsors

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Sponsors Related Links CLASIC Home AAF Home ARM Data Discovery Browse Data Post-Campaign CLASIC/CHAPS Special Session at AGU Annual Meeting, December 15-19 CLASIC Workshop, March 26-27 Data Sets Deployment Resources Measurement Platforms PNNL WRF-CuP Forecast Cloud Physics Lidar MODIS Airborne Simulator Data Mesonet Monitoring ARM Data Plots Experiment Planning CLASIC Proposal Abstract Science Questions Science and Implementation Plan (pdf) Measurement Platforms (pdf) CLASIC-Land Experiment Plan

  10. ARM - Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    May 1, 2009 [Facility News] Mobile Facility Begins Marine Cloud Study in the Azores Bookmark and Share Located next to the airport on Graciosa Island, the ARM Mobile Facility's comprehensive and sophisticated instrument suite will obtain atmospheric measurements from the marine boundary layer. Located next to the airport on Graciosa Island, the ARM Mobile Facility's comprehensive and sophisticated instrument suite will obtain atmospheric measurements from the marine boundary layer. Extended

  11. ARM: ARSCL: cloud boundaries from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

    SciTech Connect (OSTI)

    Karen Johnson; Michael Jensen

    1996-11-08

    ARSCL: cloud boundaries from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

  12. ARM: ARSCL: cloud boundaries from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Karen Johnson; Michael Jensen

    ARSCL: cloud boundaries from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

  13. PNNL ARM Virtual Tour

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ARM Mission Video Virtual Tour Home Southern Great Plains The world's largest and most extensive climate research field site, the Southern Great Plains in Oklahoma and Kansas has been a testbed for ARM measurement development for over 20 years. Data from the site provide details about cloud, aerosol, and atmospheric processes that have never before been available for computer models that simulate Earth's climate. More Information About ARM ARM Facility Overview (Adobe Flash® required) ARM

  14. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    For the surface data, the cloud-base height is derived laser ceilometer and cloud top height is derived cloud radar, and cloud temperatures are measured from ARM radiosonde ...

  15. ARM - Evaluation Product - MICROBASE Ensemble Data Products ...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    microphysical properties retrieved by the Atmospheric Radiation Measurement (ARM) Climate Research Facility's baseline cloud microphysical algorithm (MICROBASE) at the ARM Southern...

  16. ARM: ARSCL: cloud base height from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

    SciTech Connect (OSTI)

    Karen Johnson; Michael Jensen

    1996-11-08

    ARSCL: cloud base height from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

  17. ARM: ARSCL: cloud base height from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Karen Johnson; Michael Jensen

    ARSCL: cloud base height from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

  18. ARM: Fractional cloud cover, clear-sky and all-sky shortwave flux for each of 25 individual SGP facilities.

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Krista Gaustad; Laura Riihimaki

    Fractional cloud cover, clear-sky and all-sky shortwave flux for each of 25 individual SGP facilities.

  19. ARM: 10-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths from first Turner algorithm

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Chitra Sivaraman; Connor Flynn

    1998-03-01

    10-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths from first Turner algorithm

  20. Effective Radius of Cloud Droplets Derived from Ground-based Remote Sensing at the ARM SGP site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Efficacy of Aerosol - Cloud Interactions under Varying Meteorological Conditions Byung-Gon Kim, @ Mark Miller, # Stephen Schwartz, $ Yangang Liu, $ Qilong Min % Kangnung National University, @ Rutgers University # Brookhaven National Laboratory, $ State Univ. of NY at Albany % (Courtesy Magritte) Cloud dynamical processes such as entrainment mixing may be the primary modulators of cloud optical properties in certain situations. Entrainment of dry air alters the cloud drop size distribution by

  1. ARM: Fractional cloud cover, clear-sky and all-sky shortwave flux for each of 25 individual SGP facilities.

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Krista Gaustad; Laura Riihimaki

    1997-01-01

    Fractional cloud cover, clear-sky and all-sky shortwave flux for each of 25 individual SGP facilities.

  2. ARM: 10-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths from first Turner algorithm

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Chitra Sivaraman; Connor Flynn

    10-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths from first Turner algorithm

  3. Improved Arctic Cloud and Aerosol Research and Model Parameterizations

    SciTech Connect (OSTI)

    Kenneth Sassen

    2007-03-01

    In this report are summarized our contributions to the Atmospheric Measurement (ARM) program supported by the Department of Energy. Our involvement commenced in 1990 during the planning stages of the design of the ARM Cloud and Radiation Testbed (CART) sites. We have worked continuously (up to 2006) on our ARM research objectives, building on our earlier findings to advance our knowledge in several areas. Below we summarize our research over this period, with an emphasis on the most recent work. We have participated in several aircraft-supported deployments at the SGP and NSA sites. In addition to deploying the Polarization Diversity Lidar (PDL) system (Sassen 1994; Noel and Sassen 2005) designed and constructed under ARM funding, we have operated other sophisticated instruments W-band polarimetric Doppler radar, and midinfrared radiometer for intercalibration and student training purposes. We have worked closely with University of North Dakota scientists, twice co-directing the Citation operations through ground-to-air communications, and serving as the CART ground-based mission coordinator with NASA aircraft during the 1996 SUCCESS/IOP campaign. We have also taken a leading role in initiating case study research involving a number of ARM coinvestigators. Analyses of several case studies from these IOPs have been reported in journal articles, as we show in Table 1. The PDL has also participated in other major field projects, including FIRE II and CRYSTAL-FACE. In general, the published results of our IOP research can be divided into two categories: comprehensive cloud case study analyses to shed light on fundamental cloud processes using the unique CART IOP measurement capabilities, and the analysis of in situ data for the testing of remote sensing cloud retrieval algorithms. One of the goals of the case study approach is to provide sufficiently detailed descriptions of cloud systems from the data-rich CART environment to make them suitable for application to cloud modeling groups, such as the GEWEX Cloud Simulation Study (GCSS) Cirrus Working Groups. In this paper we summarize our IOP-related accomplishments.

  4. ARM - Publications

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... 29(3), doi: 10.1175jcli-d-15-0349.1. ARM Deng M, GG Mace, Z Wang, and E Berry. 2016. "CloudSat 2C-ICE product update with a new Z(e) parameterization in lidar-only region." ...

  5. ARM - Campaign Instrument - uav-proteus-micro

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Proteus Cloud Microphysics Instruments (UAV-PROTEUS-MICRO) Instrument Categories Airborne Observations, Cloud...

  6. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    H.-L.(b), University of Utah (a), EMCNCEPNOAA (b) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting Using cloud radar observations of cirrus cloud...

  7. ARM - Publications: Science Team Meeting Documents: Accounting...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for the ARM and the Clouds and Earth's Radiant Energy System (CERES) to derive cloud amount, temperature, height, phase, effective particle size, optical depth, and water path. ...

  8. ARM - Campaign Instrument - acr-jpl

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    or call us at 1-888-ARM-DATA. Send Campaign Instrument : Airborne Cloud Radar - JPL (ACR-JPL) Instrument Categories Cloud Properties Campaigns Tropical Warm Pool -...

  9. ARM - Datastreams - xsacrspeccmaskcopol

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Datastreamsxsacrspeccmaskcopol Documentation Data Quality Plots Citation DOI: 10.5439/1150301 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : XSACRSPECCMASKCOPOL X-Band Scanning ARM Cloud Radar, filtered spectral data, co-polarized mode

  10. ARM - Datastreams - xsacrspeccmaskxpol

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Datastreamsxsacrspeccmaskxpol Documentation Data Quality Plots Citation DOI: 10.5439/1150302 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : XSACRSPECCMASKXPOL X-Band Scanning ARM Cloud Radar, filtered spectral data, cross-polarized mode

  11. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    5, 2014 [Facility News] Under the Radar-This Time in Retirement Bookmark and Share Kevin Widener (in red), seen here with Andrei Lindenmaier in front of the scanning ARM cloud radar, began retired life officially on October 31, 2014. Kevin Widener (in red), seen here with Andrei Lindenmaier in front of the scanning ARM cloud radar, began retired life officially on October 31, 2014. After 30 years with Pacific Northwest National Laboratory, including the last two decades as leader of ARM's radar

  12. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    June 30, 2006 [Facility News] "VAPs" Define Key Properties at ARM Sites Bookmark and Share To better understand the influence of clouds on radiative transfer, scientists need better information about not only the specific cloud microphysics, but also the state of the surrounding atmosphere. Despite extensive instrumentation deployed at the ARM sites, some quantities of interest remain either impractical or impossible to measure directly or routinely. For this reason, some ARM Program

  13. Evaluation of high-level clouds in cloud resolving model simulations with

    Office of Scientific and Technical Information (OSTI)

    ARM and KWAJEX observations (Journal Article) | SciTech Connect Evaluation of high-level clouds in cloud resolving model simulations with ARM and KWAJEX observations Citation Details In-Document Search Title: Evaluation of high-level clouds in cloud resolving model simulations with ARM and KWAJEX observations In this paper, we evaluate high-level clouds in a cloud resolving model during two convective cases, ARM9707 and KWAJEX. The simulated joint histograms of cloud occurrence and radar

  14. ARM - VAP Process - mplcbh

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productsmplcbh Documentation & Plots Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : Cloud Base Height from MPL Using Scott-Spinhirne Algorithm (MPLCBH) Instrument Categories Cloud Properties Output Products mplcbh1scott : MPL: cloud base heights using the Scott/Spinhirne algorithm Primary Measurements The following measurements are those considered

  15. ARM - VAP Process - mplcmask

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productsmplcmask Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : Cloud mask from Micropulse Lidar (MPLCMASK) Instrument Categories Cloud Properties Sample plot generated by MPLCMASK. Click to enlarge the image. Sample plot generated by MPLCMASK. Click to enlarge the image. An operational cloud boundary algorithm has been

  16. ARM - VAP Process - ripbe

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productsripbe Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : Radiatively Important Parameters Best Estimate (RIPBE) Instrument Categories Aerosols, Cloud Properties, Radiometric Quicklook plot showing RIPBE liquid cloud effective radius (top) and quality control flags (bottom). For the first half of the day, no cloud data

  17. ARM - VAP Process - sfccldgrid

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productssfccldgrid Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : Surface Cloud Grid (SFCCLDGRID) Instrument Categories Cloud Properties, Derived Quantities and Models The Surface Cloud Grid VAP uses as input the 15-minute output from the Shortwave Flux Analysis VAP (Long, 2001; Long and Ackerman, 2000; Long et al., 1999)

  18. ARM - Feature Stories and Releases Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cloud radars measure an incoming storm at the ARM Southern Great Plains site in Oklahoma. Cloud radars measure an incoming storm at the ARM Southern Great Plains site in Oklahoma. ...

  19. Atmospheric Radiation Measurement (ARM) Data from the ARM Aerial Facility

    Office of Scientific and Technical Information (OSTI)

    () | Data Explorer the ARM Aerial Facility Title: Atmospheric Radiation Measurement (ARM) Data from the ARM Aerial Facility The Atmospheric Radiation Measurement (ARM) Program is the largest global change research program supported by the U.S. Department of Energy. The primary goal of the ARM Program is to improve the treatment of cloud and radiation physics in global climate models in order to improve the climate simulation capabilities of these models. ARM data is collected both through

  20. ARM - 2001 ARM Science Team Meeting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Profiles of Fair - Weather Cumulus Clouds at the TWP ARM Site 2:45 p.m. Comstock JM, TP Ackerman, and GG Mace: Cirrus Radiative Properties in the Tropical Western Pacific 3:00 p.m. ...

  1. ARM - 1998 ARM Science Team Meeting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Profiles of Fair - Weather Cumulus Clouds at the TWP ARM Site 2:45 p.m. Comstock JM, TP Ackerman, and GG Mace: Cirrus Radiative Properties in the Tropical Western Pacific 3:00 p.m. ...

  2. WACR Calibration Report

    SciTech Connect (OSTI)

    Mead, D

    2010-03-23

    Calibration report for the W-Band (95 GHz) ARM Cloud Radar performed for the ARM Climate Research Facility by ProSensing Inc.

  3. ARM - VAP Process - kazrcor

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productskazrcor Documentation & Plots Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : KAZR Corrected Data (KAZRCOR) Instrument Categories Cloud Properties Output Products kazrcorge : Ka ARM Zenith Radar (KAZR): general mode Corrected kazrcorhi : Ka ARM Zenith Radar (KAZR): highest sensitivity mode Corrected Primary Measurements The following measurements are

  4. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ARM Archive Sets Record for User Accounts Bookmark and Share The ARM Archive stores and distributes the large quantities of data resulting from routine operations and scientific field campaigns conducted at the ARM sites. Scientists use these data to study atmospheric radiation balance and cloud feedback processes, which are critical to the understanding of global climate change. In the first quarter of FY07 (October through December 2006), the ARM recorded the largest number of Archive users

  5. ARM - Field Campaign - ARM West Antarctic Radiation Experiment...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Cloud Radar Browse Data KAZR Ka ARM Zenith Radar Browse Data LDIS Laser Disdrometer Browse Data MET Surface Meteorological Instrumentation Browse Data Browse Plots MFR ...

  6. DOE/SC-ARM-XXXX DOE/SC-ARM-0706

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    XXXX DOE/SC-ARM-0706  Table of Contents Program Overview............................................................................................................................................................. 4 . The.Role.of.Clouds.in.Climate..................................................................................................................................... 4 .

  7. Final Technical Report ARM DOE Grant #DE-FG02-03ER63520 Parameterizations of Shortwave Radiactive Properties of Broken Clouds from Satellite and Ground-Based Measurements

    SciTech Connect (OSTI)

    Albrecht, Bruce, A.

    2006-06-19

    This study used DOE ARM data and facilities to: 1) study macroscopic properties of continental stratus clouds at SGP and the factors controlling these properties, 2) develop a scientific basis for understanding the pocesses responsible for the formation of boundary layer clouds using ARM observations in conjunction with simple parametric models and LES, and 3) evaluate cumulus cloud characteristics retrieved retrieved from the MMCR operating at TWP-Nauru. In addition we have used high resolution 94 GHz observations of boundary layer clouds and precipitation to: 1)develop techniques for using high temporal resolution Doppler velocities to study large-eddy circulations and turbulence in boundary layer clouds and estimate the limitations of using current and past MMCR data for boundary layer cloud studies, 2) evaluate the capability and limitation of the current MMCR data for estimating reflectivity, vertical velocities, and spectral under low-signal-to-noise conditions associated with weak non-precipitating clouds, 3) develop possible sampling modes for the new MMCR processors to allow for adequate sampling of boundary layer clouds, and 4) retrieve updraft and downdraft structures under precipitating conditions.

  8. ARM poster 2007 Chuang

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Interactions from ARM Measurements to Global Modeling Catherine Chuang, Steve Chin, Shaocheng Xie, James Kelly, and James Boyle Lawrence Livermore National Laboratory, Livermore, CA The Issues  Examine the influence of aerosol compositions on droplet formation and review different cloud nucleation parameterizations.  Investigate impacts of aerosols and autoconversion schemes on cloud properties over SGP with 2-D/3-D cloud resolving models.  Explore the sensitivity of aerosol/cloud

  9. ARM - Data Announcements Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Surface Cloud Condensation Nuclei Average Evaluation Product Available Bookmark and Share This plot shows the concentration of CCN measured by the cloud condensation particle counter versus the concentration measured by the condensation particle counter. This plot shows the concentration of CCN measured by the cloud condensation particle counter versus the concentration measured by the condensation particle counter. Aerosol observing systems (AOS) at ARM's sites measure cloud condensation nuclei

  10. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Satellite Data Conversion Supports Tropical Cloud Research Bookmark and Share This liquid water plot from SSM/I global data shows long cloud bands and areas of scattered convection (red), including a fairly extensive cloud system in the vicinity of Manus Island in the Tropical Western Pacific (indicated by the white rectangle). For several years, the ARM Program has collected global satellite data for wind speed, precipitable water vapor, cloud liquid water, and rain rate over the ocean. From

  11. Failure and Redemption of Multifilter Rotating Shadowband Radiometer (MFRSR)/Normal Incidence Multifilter Radiometer (NIMFR) Cloud Screening: Contrasting Algorithm Performance at Atmospheric Radiation Measurement (ARM) North Slope of Alaska (NSA) and Southern Great Plains (SGP) Sites

    SciTech Connect (OSTI)

    Kassianov, Evgueni I.; Flynn, Connor J.; Koontz, Annette S.; Sivaraman, Chitra; Barnard, James C.

    2013-09-11

    Well-known cloud-screening algorithms, which are designed to remove cloud-contaminated aerosol optical depths (AOD) from AOD measurements, have shown great performance at many middle-to-low latitude sites around the world. However, they may occasionally fail under challenging observational conditions, such as when the sun is low (near the horizon) or when optically thin clouds with small spatial inhomogeneity occur. Such conditions have been observed quite frequently at the high-latitude Atmospheric Radiation Measurement (ARM) North Slope of Alaska (NSA) sites. A slightly modified cloud-screening version of the standard algorithm is proposed here with a focus on the ARM-supported Multifilter Rotating Shadowband Radiometer (MFRSR) and Normal Incidence Multifilter Radiometer (NIMFR) data. The modified version uses approximately the same techniques as the standard algorithm, but it additionally examines the magnitude of the slant-path line of sight transmittance and eliminates points when the observed magnitude is below a specified threshold. Substantial improvement of the multi-year (1999-2012) aerosol product (AOD and its Angstrom exponent) is shown for the NSA sites when the modified version is applied. Moreover, this version reproduces the AOD product at the ARM Southern Great Plains (SGP) site, which was originally generated by the standard cloud-screening algorithms. The proposed minor modification is easy to implement and its application to existing and future cloud-screening algorithms can be particularly beneficial for challenging observational conditions.

  12. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    when available, to explore the aerosol indirect effect in non-precipitating, ice-free clouds. The study uses archived ARM data on sub-cloud aerosol extinction, cloud...

  13. Microsoft PowerPoint - Mace_Poster_ARM-ATrain_Comparison [Compatibility Mode]

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Representativeness of ARM Cloud Measurements: The Representativeness of ARM Cloud Measurements: The Representativeness of ARM Cloud Measurements: p I iti l C i f ARM Cl d St ti ti With Cl d t d CALIPSO St ti ti Initial Comparison of ARM Cloud Statistics With Cloudsat and CALIPSO Statistics Initial Comparison of ARM Cloud Statistics With Cloudsat and CALIPSO Statistics p Jay Mace Sally Benson Jay Mace, Sally Benson y , y Contributions from: Roger Marchand (Cloudsat mask) Mark Vaughn (CALIPSO

  14. ARM - VAP Process - armbe

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    G. Palanisamy, Y. Shi, and D.D. Turner, 2010: CLOUDS AND MORE: ARM Climate Modeling Best Estimate Data. Bull. Amer. Meteor. Soc., 91, 13-20. DOI: 10.11752009BAMS2891.1. Data...

  15. ARM - Instrument - dl

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Doppler Lidar (DL) Instrument Categories Cloud Properties Picture of the Doppler Lidar...

  16. ARM - 2007 Performance Metrics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    3 (CAM3). Document and evaluate ice water content simulated by CAM3 using ARM and NASA Aura satellite data. Product DocumentationDeliverables - The implementation of the cloud...

  17. ARM - Campaign Instrument - fcdp

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsfcdp Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Fast cloud droplet probe (FCDP)...

  18. ARM - Campaign Instrument - visst

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsvisst Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Minnis Cloud Products Using Visst...

  19. ARM - Campaign Instrument - cpi

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentscpi Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Cloud Particle Imager (CPI) Instrument...

  20. ARM - Campaign Instrument - clddigcam

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsclddigcam Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Cloud Digital Camera (CLDDIGCAM)...

  1. ARM - Campaign Instrument - csi

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentscsi Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Cloud Spectrometer and Impactor (CSI)...

  2. ARM - Campaign Instrument - tcrsr

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentstcrsr Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Thin Cloud Rotating Shadowband...

  3. ARM - Campaign Instrument - qmeaerilbl

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsqmeaerilbl Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Comparison of Statistics or Clouds...

  4. ARM - Instrument - tsi

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    from you Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Total Sky Imager (TSI) Instrument Categories Cloud Properties Picture of the Total Sky Imager...

  5. ARM - Campaign Instrument - tsi

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Total Sky Imager (TSI) Instrument Categories Cloud Properties Campaigns 2007 Cumulus Humilis Aerosol Process...

  6. ARM - Datastreams - tsicldmask

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    note below or call us at 1-888-ARM-DATA. Send Datastream : TSICLDMASK Total Sky Imager (TSI): cloud decision images, PNG format Active Dates 2000.07.02 - 2016.01.04 Measurement...

  7. ARM - Datastreams - mwrp

    Office of Scientific and Technical Information (OSTI)

    1-888-ARM-DATA. Send Datastream : MWRP Microwave Radiometer data (MWR Profiles - QME), water vapor, temp, cloud liquid water, precip water retrievals Active Dates 2004.02.19 -...

  8. ARM - Instrument - irsi

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    from you Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Infra-Red Sky Imager (IRSI) Instrument Categories Cloud Properties, Radiometric Primary...

  9. ARM - Datastreams - avhrrdar

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    a note below or call us at 1-888-ARM-DATA. Send Datastream : AVHRRDAR AVHRR images for Darwin from BOM Active Dates 2003.05.01 - 2009.06.05 Measurement Categories Cloud Properties...

  10. ARM - Datastreams - ncepgfsdarsfc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    us at 1-888-ARM-DATA. Send Datastream : NCEPGFSDARSFC NCEP GFS: surface variables at Darwin Active Dates 2002.09.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud...

  11. ARM - Datastreams - ncepgfsdarflx

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    call us at 1-888-ARM-DATA. Send Datastream : NCEPGFSDARFLX NCEP GFS: flux variables at Darwin Active Dates 2002.09.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud...

  12. ARM - Value-Added Products - Status

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    - Status Report Expand Orange | Expand Blue | Expand Green | Collapse All See Legend for Data Availability explanation. ARM - Value-Added Products - Status Last Update: March 21 2016 19:00:50 +/- Vap Name Translator Developer Frequency Tier Producer Data Availability ACRED (ARM Cloud Retrieval Ensemble Data) Shaocheng Xie Chuanfeng Zhao, Renata Mc Coy Periodically Evaluation Developer ARM Overview: Developer Description: The ARM Cloud Retrieval Ensemble Dataset (ACRED) is a multi-year cloud

  13. ARM - VAP Process - wsicloud

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productswsicloud Documentation & Plots Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : Whole Sky Imager Cloud Products (WSICLOUD) Note:wsicloud is currently inactive and/or retired. Active Dates 1995.09.20 - 2004.01.12 Instrument Categories Cloud Properties Output Products wsicloudden : WSI: stationary (JPEG) images based on optical density retrieval

  14. ARM - VAP Product - aosccnavg

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productsaosccnavgaosccnavg Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1095312 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP Output : AOSCCNAVG Aerosol Observing System (AOS): cloud condensation nuclei data, averaged Active Dates 2007.05.19 - 2014.11.05 Originating VAP Process Aerosol Observing System (AOS): cloud condensation nuclei

  15. ARM - VAP Product - wsicloudsummarygif

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productswsicloudwsicloudsummarygif Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1027766 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP Output : WSICLOUDSUMMARYGIF WSI: images (GIF) relating to cloud, aerosol summary data Active Dates 1998.05.30 - 2001.07.30 Originating VAP Process Whole Sky Imager Cloud Products : WSICLOUD Measurements The

  16. ARM - Events Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    August 21, 2015 [Events, Facility News] Students Explore the Skies at ARM Summer Training Bookmark and Share Learning practical and theoretical knowledge about observing and modeling aerosols, clouds, and precipitation processes, 26 students from around the world attended the ARM Summer Training and Science Applications event last month. Learning practical and theoretical knowledge about observing and modeling aerosols, clouds, and precipitation processes, 26 students from around the world

  17. ARM - Events Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2, 2009 [Events] Fall 2009 ARM Cloud Modeling & Aersol Working Groups Meeting Bookmark and Share The ARM Cloud Modeling and Aerosol Working Groups Joint Meeting will be held September 29, 2009, to October 2, 2009, at the Millennium Harvest House in Boulder, Colorado. Combined sessions for the aerosol indirect effect discussion will be held September 30 and October 1. Meetings regarding ISDAC will be held on October 1 and a combined poster session will be held that evening. The registration

  18. ARM - Events Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    8, 2009 [Events] Fall 2009 ARM Cloud Properties and Radiative Processes Working Groups Meeting Bookmark and Share The joint fall meeting for the ARM Cloud Properties/Radiative Processes Working Groups will be held September 15-18, 2009, at the Millennium Harvest House in Boulder, Colorado. The registration fee is $100, and the registration deadline is September 8, 2009. For additional registration information, including rates and the agenda, please visit the meeting website. Participants can

  19. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    New Data Stream Available from Millimeter Wave Cloud Radar Bookmark and Share Inside the instrument shelter, the MMCR data system collects radar spectral data and processes these into reflectivity, vertical velocities, and spectral width. As a result of upgrades to the Millimeter Wave Cloud Radar (MMCR) processors (see http://www.arm.gov/acrf/updates051504.stm#nsammcr) at the ARM Climate Research Facility Southern Great Plains (SGP) and North Slope of Alaska (NSA) locales, two MMCR data

  20. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    22, 2014 [Education, Facility News] Young Minds Blossom During Spring STEM Events Bookmark and Share The latest addition to the ARM education materials includes a cloud version of the childhood memory match game. The latest addition to the ARM education materials includes a cloud version of the childhood memory match game. Earth Day 2014 is today, Tuesday, April 22. When Earth Day began in 1970, Senator Gaylord Nelson's goal was to pay tribute to the environment in which we live. Since then,

  1. ARM - Facility News Article

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    25, 2015 [Facility News] Darwin Site Operations Come to an End Bookmark and Share An aerial view of the ARM Climate Research Facility site in Darwin, Australia, taken during the Tropical Warm Pool - International Cloud Experiment that was conducted in January and February 2006. An aerial view of the ARM Climate Research Facility site in Darwin, Australia, taken during the Tropical Warm Pool - International Cloud Experiment that was conducted in January and February 2006. The third Tropical

  2. ARM - Facility News Article

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    Unattended Performance of Lidar Makes Life "Easy" Bookmark and Share Scientists routinely use light detection and ranging (lidar) systems to obtain data about cloud and aerosol layering and optical properties. In October 2006, ARM scientists spent a week at the ARM Southern Great Plains (SGP) site using the established Micropulse Lidar (MPL) and a new EZ Lidar to gather measurements of aerosols and cloud structure captured in both signals. Evaluation of the EZ Lidar performance by

  3. ARM - Instruments

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsCloud Properties

  4. ARM - Measurements

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govMeasurementsCloud Properties

  5. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Comparison of ARM Cloud Property Observations with CRM Simulations Xu, K.-M. (a), Cederwall, R.T. (b), Xie, S.C. (b), and Yio, J.J. (b), NASA Langley Research Center (a), Lawrence Livermore National Laboratory (b) Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting The cloud property observations are compared with cloud-resolving model simulated cloud properties in this study, using the Summer 1997 Intensive Observation Period (IOP) data of the ARM program. Midlatitude

  6. ARM - Data Announcements Article

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    2, 2009 [Data Announcements] Data Plots Available for the ARM Mobile Facility Deployment in the Azores Bookmark and Share Data plots, like this one, are now available from the ARM Mobile Facility deployment on Graciosa Island in the Azores. The 20-month deployment of the ARM Mobile Facility on Graciosa Island in the Azores is well underway in support of the Clouds, Aerosol, and Precipitation in the Marine Boundary Layer field campaign. Data are being collected to study the seasonal life cycle of

  7. ARM - Data Announcements Article

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    August 25, 2009 [Data Announcements] Shortwave Flux Analysis Extended to North Slope of Alaska Bookmark and Share This summer, the ARM Radiative Processes Working Group released an extension of the Shortwave Flux Analysis value-added product to include data from the ARM North Slope of Alaska locale. Originally released in 2004, the Shortwave Flux Analysis VAP was developed to infer clear-sky shortwave, shortwave cloud effects, and fractional sky cover from shortwave measurements at the ARM

  8. ARM - Facility News Article

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    January 11, 2011 [Facility News] ARM Mobile Facility Completes Extended Campaign in the Azores; Next Stop-India Bookmark and Share The ARM Mobile Facility obtained data on Graciosa Island in the Azores from May 2009 through December 2010--its longest deployment to date. The ARM Mobile Facility obtained data on Graciosa Island in the Azores from May 2009 through December 2010--its longest deployment to date. December 31, 2010, marked the last official day of data collection for the Clouds,

  9. ARM - Facility News Article

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    9, 2007 [Facility News] Field Campaigns Selected for Fiscal Year 2009 Bookmark and Share The U.S. Department of Energy program directors for the ARM Climate Research Facility and ARM Aerial Vehicles Program announced the following field campaign selections for fiscal year 2009: The ARM Mobile Facility will be deployed in the Azores to support the Clouds, Aerosol, and Precipitation in the Marine Boundary Layer (CLAP-MBL) field campaign. From April through December, the AMF will be located on

  10. ARM - Facility News Article

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    School Visits and New Kiosk Promote Science Education at ARM Darwin Site Bookmark and Share Titled "Climate Change: Science and Traditional Knowledge," ARM's latest education kiosk is now on permanent display at the Museum and Art Gallery of the Northern Territory in Darwin. A handful of ARM scientists involved in the Tropical Warm Pool - International Cloud Experiment (TWP-ICE) field campaign took time out from their research for a very important purpose-to talk to students about

  11. DOE/SC-ARM/TR-095 The Microbase Value-Added Product: A Baseline Retrieval of Cloud

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    5 The Microbase Value-Added Product: A Baseline Retrieval of Cloud Microphysical Properties M Dunn K Johnson M Jensen May 2011 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or

  12. ARM - Data Announcements Article

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    31, 2012 [Data Announcements] Five Years of Radiatively Important Parameters Best Estimate (RIPBE) Data Now Available Bookmark and Share Scientists use detailed state-of-the art radiative transfer models to understand the radiative impact of clouds and aerosols on the Earth's radiation budget, evaluate remote sensing retrievals of cloud and aerosol properties, and develop and evaluate simpler radiative transfer models for inclusion in cloud and climate models. The ARM suite of instruments

  13. ARM - Facility News Article

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    Aerial Vehicles Program to Support "CLOWD" Statistical Analyses Bookmark and Share Instruments, such as this miniature cloud condensation nuclei counter, will be considered for the RACORO aircraft payload to measure cloud microphysical properties. In 2009, the ARM Aerial Vehicles Program (AVP) will support the Routine AVP Clouds with Low Optical Water Depths (CLOWD) Optical Radiative Observations (RACORO) field campaign, led by principal investigator Andrew Vogelmann. During this

  14. ARM - Facility News Article

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    May 31, 2010 [Facility News] Scientists Convene at SGP Site for Complex Convective Cloud Experiment Bookmark and Share The MC3E planning team poses for a group photo near the ARM millimeter wave cloud radar at the SGP Central Facility. Mike Jensen, principle investigator for the campaign, is second from left. Photo courtesy of Brad Orr. In early May, scientists involved in the Midlatitude Continental Convective Cloud Experiment (MC3E), a joint field program involving NASA Global Precipitation

  15. ARM XDC Datastreams

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    StreamsMinnis Cloud Products Using Visst Algorithm Documentation VISST Instrument External Datastream Descriptions ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Minnis Cloud Products Using Visst Algorithm (VISST) Information updated on March 3, 2016, 6:52 pm GMT General Data Description These data streams contain satellite based retrievals of cloud and radiation properties by Pat Minnis' group at NASA/Langley

  16. ARM - Datastreams - tlcv

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    Datastreamstlcv Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : TLCV Time-lapse cloud video (TLCV): qual. sky images, typ. ea 4-8 sec, Quicktime movies Active Dates 1997.09.15 - 2001.09.14 Measurement Categories Cloud Properties Originating Instrument Time-Lapsed Cloud Video (TLCV) Measurements The measurements below provided by this product are those considered

  17. ARM - Instrument - tlcv

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    govInstrumentstlcv Documentation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Time-Lapsed Cloud Video (TLCV) Note: tlcv is currently inactive and/or retired. Active Dates 1997.09.15 - 2001.09.14 Instrument Categories Cloud Properties General Overview The time-lapsed cloud video (TLCV) camera provides a record of sky conditions by recording color images of an approximately 100-degree field of view,

  18. arm200_v3.ppt

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cloud Properties Derived from MSG SEVIRI and ARM Mobile Facility Observations J. Kirk Ayers 1 , Patrick Minnis 2 , Rabindra Palikonda 1 , Christopher Yost 1 , Douglas Spangenberg 1 , Fu-Lung Chang 3 , Mandana Khaiyer 1 , and Louis Nguyen 2 1) Science Systems and Applications, Inc. 2) NASA Langley Research Center 3) National Institute of Aerospace Goal Approach! * Derive cloud properties from Meteosat-9 SEVIRI observations * Compare results with ARM AMF observations Analysis Domain and Cloud

  19. ARM - Datastreams - aosccn1col

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    col Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : AOSCCN1COL AOS: Cloud Condensation Nuclei Counter Active Dates 2014.01.25 - 2016.04.12 Measurement Categories Aerosols, Cloud Properties Originating Instrument Cloud Condensation Nuclei Particle Counter (CCN) Measurements Only measurements considered scientifically relevant are shown below by default. Show all

  20. arm09

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    dry are the Subtropics? or: How did the ARM MP183 end up in the Southeast Pacific? Paquita Zuidema U of Miami Maria Cadeddu Argonne NL (Chile) Arica ERBE net cloud forc. !"#$$$%&'$()!(*!(+!(,!(- $ $ ./01 2 3 4(" -(" ,(" 5*6 2*6 )*6 *6 ( 5( +( 4( )2( )*( 20S Oct mean LWP 85W 0 50 100 150 LWP (g m -2 ) a) 0 50 100 150 LWP (Lieb87,G57; g m -2 ) -30 -20 -10 0 10 LWP diff. (g m -2 ) b) EPIC (2001) 6 research cruises < 2008 more modern gaseous absorption models (Rosenkranz

  1. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, S-band Radar (williams-s_band)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Williams, Christopher

    2012-11-06

    This data was collected by the NOAA 449-MHz and 2.8-GHz profilers in support of the Department of Energy (DOE) and NASA sponsored Mid-latitude Continental Convective Cloud Experiment (MC3E). The profiling radars were deployed in Northern Oklahoma at the DOE Atmospheric Radiation Mission (ARM) Southern Great Plans (SGP) Central Facility from 22 April through 6 June 2011. NOAA deployed three instruments: a Parsivel disdrometer, a 2.8-GHz profiler, and a 449-MHz profiler. The parasivel provided surface estimates of the raindrop size distribution and is the reference used to absolutely calibrate the 2.8 GHz profiler. The 2.8-GHz profiler provided unattenuated reflectivity profiles of the precipitation. The 449-MHz profiler provided estimates of the vertical air motion during precipitation from near the surface to just below the freezing level. By using the combination of 2.8-GHz and 449-MHz profiler observations, vertical profiles of raindrop size distributions can be retrieved. The profilers are often reference by their frequency band: the 2.8-GHz profiler operates in the S-band and the 449-MHz profiler operates in the UHF band. The raw observations are available as well as calibrated spectra and moments. This document describes how the instruments were deployed, how the data was collected, and the format of the archived data.

  2. ARM - Facility News Article

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    2, 2014 [Facility News] First MAGIC Workshop Discusses Future of Marine Clouds Bookmark and Share MAGIC route with June-July-August average low-level cloud cover, GPCI transect, and CGILS points. MAGIC route with June-July-August average low-level cloud cover, GPCI transect, and CGILS points. Following the wrap up of the Marine ARM GPCI Investigation of Clouds (MAGIC) field campaign, a workshop was held to provide an overview of existing and planned data analysis from the campaign. In May, the

  3. ARM - ARM Safety Policy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Safety Policy About Become a User Recovery Act Mission FAQ Outreach Displays History Organization Participants Facility Statistics Forms Contacts Facility Documents ARM Management Plan (PDF, 1.3MB) Field Campaign Guidelines (PDF, 574KB) ARM Climate Research Facility Expansion Workshop (PDF, 1.46MB) Facility Activities ARM and the Recovery Act Contributions to International Polar Year Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send ARM Safety

  4. ARM - Publications: Science Team Meeting Documents

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    Atmospheric Radiation Measurement (ARM) Science Team Meeting Domain-averaged, broadband solar radiative budgets for an evolving tropical mesoscale convective cloud system are...

  5. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Radiation Measurement (ARM) site. Results suggest that aerosol associated with maritime or northerly air trajectories tend to have a stronger effect on clouds than aerosol...

  6. ARM - CLASIC Workshop, March 26-27

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Measurement Platforms PNNL WRF-CuP Forecast Cloud Physics Lidar MODIS Airborne Simulator Data Mesonet Monitoring ARM Data Plots Experiment Planning CLASIC Proposal Abstract...

  7. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of Atmospheric Sciences University of California, Los Angeles Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting A new cloud detection scheme has been...

  8. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (b), PAOSCU Boulder (c), CIRACSU (d) Fourteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting State of the art cloud resolving modeling (CRM) shows considerable...

  9. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    State University (b) Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting The overlap properties of 850 snapshots of convective cloud fields generated by a...

  10. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Sky Cover and Cloud Fraction Kassianov, E., Long, C., and Ovtchinnikov, M., Pacific Northwest National Laboratory Fourteenth Atmospheric Radiation Measurement (ARM) Science Team...

  11. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (ARM) Science Team Meeting Determinations of cloud fractions are essential for radiative energy balance studies. Only satellites afford the global coverage needed to extend these...

  12. ARM - Publications: Science Team Meeting Documents: Nighttime...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    as well as other cloud types. Most of the disagreements are well-explained by AIRS footprint-scale heterogeneity compared to ARM point measurements, cirrus overlying...

  13. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Eighth Atmospheric Radiation Measurement (ARM) Science Team Meeting The realistic fractal model of stratocumulus clouds and 3D Monte Carlo technique are exploited to study...

  14. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Measurement (ARM) Science Team Meeting We are developing an algorithm that uses the radar reflectivity, Doppler velocity and Doppler spectral width observed in cirrus cloud...

  15. ARM - Feature Stories and Releases Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... The ARM Facility will be supporting Australian agencies measuring cloud conditions from remote Macquarie Island between New Zealand and Antarctica. Image courtesy of M. Murphy, via ...

  16. ARM - Feature Stories and Releases Article

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    radars as well as upgrades to the baseline ARM millimeter wave cloud radars (MMCR) ... These radars will be deployed several kilometers from the baseline instrument clusters at ...

  17. ARM - Publications: Science Team Meeting Documents: Observations...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The potential for quantifying the natural variability in cloud characteristics at Pt. Reyes, California though the first deployment of the ARM Mobile Facility will be discussed....

  18. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Center(c) Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting The probability of occurrence of the cloud top height for a given altitude and relation to the...

  19. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Science Team Meeting The Atmospheric Radiation Measurement (ARM) Program has deployed dual-frequency microwave water radiometers (MWRs) at its Cloud and Radiation Testbed (CART)...

  20. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of Cloud Properties at Night and in Low Sun Conditions The Atmospheric Radiation Measurement (ARM) Program measurements at the surface allow for continued development and...

  1. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Minnis, P., and Young, D.F., NASA Langley Research Center Eighth Atmospheric Radiation Measurement (ARM) Science Team Meeting Current retrievals of cloud properties at night...

  2. ARM - Campaign Instrument - co2lidar

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Carbon Dioxide Doppler Lidar (CO2LIDAR) Instrument Categories Cloud Properties Campaigns Remote Cloud...

  3. ARM - Campaign Instrument - aeri-cf

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    cf Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : AERI Cloud Fraction (AERI-CF) Instrument Categories Cloud...

  4. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ARM-CONF-1999, March 1999 San Antonio, Texas For proper ... Cadirola, M. Determination of Cloud Base Height Using the ... Hiett, T.C. Measurements from the Air Force Cloud Profiling ...

  5. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Del Genio, A.D. Analysis of the Temperature Dependence of Low Cloud Optical Thickness Using ARM Data ... Ding, M. Treatment of Cloud Radiative Effects in General Circulation Models ...

  6. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Comparisons of Measurements of Cloud Lower Boundaries by the MPL, BLC, MMCR, BBSS and AERI Han, D., and Ellingson, R.G., University of Maryland Eighth Atmospheric Radiation Measurement (ARM) Science Team Meeting The cloud lower boundary is an important factor in radiative transfer under various cloud conditions. Several ground-based instruments at the ARM CART Central Facility, including the micro pulse lidar (MPL), the Belfort laser ceilometer (BLC), and the MilliMeter Cloud profiling Radar

  7. ARM - Publications: Science Team Meeting Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Using ARM Radar Data to Parameterize the Moments of Cirrus Cloud Properties in Terms of Cloud Layer Thickness and Temperature Vernon, E.N.(a) and Mace, G.G.(b), University of Utah (a), University of Utah (b) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting Improving the reperesentation of cirrus clouds in large-scale models has been identified as a way to reduce the uncertainty associated with climate change simulations in these models. Representing cirrus clouds in

  8. A Lidar View of Clouds in Southeastern China

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Lidar View of Clouds in Southeastern China For original submission and image(s), see ARM Research Highlights http:www.arm.govsciencehighlights Research Highlight From May 2008...

  9. Liquid Water the Key to Arctic Cloud Radiative Closure

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Water the Key to Arctic Cloud Radiative Closure For original submission and image(s), see ARM Research Highlights http:www.arm.govsciencehighlights Research Highlight...

  10. Intersecting Cold Pools: Convective Cloud Organization by Cold...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Intersecting Cold Pools: Convective Cloud Organization by Cold Pools over Tropical Ocean For original submission and image(s), see ARM Research Highlights http:www.arm.gov...

  11. ARM - CLASIC Measurement Platforms

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Measurement Platforms Related Links CLASIC Home AAF Home ARM Data Discovery Browse Data Post-Campaign CLASIC/CHAPS Special Session at AGU Annual Meeting, December 15-19 CLASIC Workshop, March 26-27 Data Sets Deployment Resources Measurement Platforms PNNL WRF-CuP Forecast Cloud Physics Lidar MODIS Airborne Simulator Data Mesonet Monitoring ARM Data Plots Experiment Planning CLASIC Proposal Abstract Science Questions Science and Implementation Plan (pdf) Measurement Platforms (pdf) CLASIC-Land

  12. ARM - Campaign Instrument - aeth

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsaeth Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Aethalometer (AETH) Instrument Categories Aerosols Campaigns Azores: Above-Cloud Radiation Budget near Graciosa Island [ Download Data ] Gan Island, Maldives; Mobile Facility, 2010.04.15 - 2010.09.15 Carbonaceous Aerosol and Radiation Effects Study (CARES) - Surface Meteorological Sounding [ Download Data ] Off Site Campaign : various, including non-ARM

  13. ARM - Campaign Instrument - ccn

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsccn Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Cloud Condensation Nuclei Particle Counter (CCN) Instrument Categories Aerosols, Airborne Observations Campaigns 2005 MASE-MArine Stratus Experiment-Pt. Reyes, CA [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2005.07.05 - 2005.07.27 2007 Cumulus Humilis Aerosol Process Study (CHAPS) [ Download Data ] Off Site Campaign : various,

  14. ARM - Campaign Instrument - disdrometer

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsdisdrometer Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Impact Disdrometer (DISDROMETER) Instrument Categories Surface Meteorology Campaigns AMIE-Gan Ancillary Disdrometer [ Download Data ] Gan Island, Maldives; Mobile Facility, 2012.01.01 - 2012.02.10 CRYSTAL-FACE [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2002.06.26 - 2002.08.01 Midlatitude Continental Convective Clouds

  15. ARM - Campaign Instrument - fssp

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsfssp Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Forward-Scatter Spectrometer Probe (FSSP) Instrument Categories Aerosols, Airborne Observations, Cloud Properties Campaigns 1995 Southern Oxidants Study (SOS) [ Download Data ] Off Site Campaign : various, including non-ARM sites, 1995.06.24 - 1995.07.20 1996 NARSTO Northeast Field Study (NARSTO-NE) [ Download Data ] Off Site Campaign : various, including

  16. ARM - Campaign Instrument - mwr

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsmwr Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Microwave Radiometer (MWR) Instrument Categories Atmospheric Profiling, Cloud Properties, Radiometric Campaigns ARESE II IOP [ Download Data ] Southern Great Plains, 2000.02.01 - 2000.04.05 Application of the ARM Mobile Facility (AMF) to Study the Aerosol Indirect Effects in China [ Download Data ] Shouxian, Anhui, China; Mobile Facility, 2008.05.15 -

  17. ARM - Campaign Instrument - sodar

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentssodar Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Mini Sound Detection and Ranging (SODAR) Instrument Categories Atmospheric Profiling, Surface Meteorology Campaigns Boundary Layer Cloud IOP [ Download Data ] North Slope Alaska, 2005.07.11 - 2005.08.07 Carbonaceous Aerosol and Radiation Effects Study (CARES) - Surface Meteorological Sounding [ Download Data ] Off Site Campaign : various, including non-ARM

  18. ARM - Campaign Instrument - tracegas

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentstracegas Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Trace gas concentrations (TRACEGAS) Instrument Categories Aerosols, Airborne Observations, Atmospheric Profiling, Atmospheric Carbon Campaigns 2008 VAMOS Ocean-Cloud-Atmos-Land Study (VOCALS) [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2008.10.14 - 2008.11.13 Observations and Modeling of the Green Ocean Amazon (GOAMAZON) [

  19. ARM - Campaign Instrument - varanal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    govInstrumentsvaranal Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Constrained Variational Analysis (VARANAL) Instrument Categories Derived Quantities and Models Campaigns ARM MJO Investigation Experiment on Gan Island [ Download Data ] Gan Island, Maldives; Mobile Facility, 2011.10.01 - 2012.03.31 Cloud LAnd Surface Interaction Campaign (CLASIC) [ Download Data ] Southern Great Plains, 2007.06.01 - 2007.06.30 Fall 1997

  20. ARM - Science Questions

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Science Questions Related Links CLASIC Home AAF Home ARM Data Discovery Browse Data Post-Campaign CLASIC/CHAPS Special Session at AGU Annual Meeting, December 15-19 CLASIC Workshop, March 26-27 Data Sets Deployment Resources Measurement Platforms PNNL WRF-CuP Forecast Cloud Physics Lidar MODIS Airborne Simulator Data Mesonet Monitoring ARM Data Plots Experiment Planning CLASIC Proposal Abstract Science Questions Science and Implementation Plan (pdf) Measurement Platforms (pdf) CLASIC-Land

  1. ARM - Science Questions

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Science Questions Related Links MC3E Home News News & Press MC3E Backgrounder (PDF, 1.61MB) SGP Images ARM flickr site Field Blog ARM Data Discovery Browse Data Deployment Operations Measurements Science Plan (PDF, 3.85 MB) Featured Data Plots SGP Data Plots (all) Experiment Planning Steering Committee Science Questions MC3E Proposal Abstract and Related Campaigns Meetings Cloud Life Cycle Working Group Contacts Michael Jensen, Lead Scientist Science Questions This experiment seeks to use a

  2. ARM - Steering Committee

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Steering Committee Related Links MC3E Home News News & Press MC3E Backgrounder (PDF, 1.61MB) SGP Images ARM flickr site Field Blog ARM Data Discovery Browse Data Deployment Operations Measurements Science Plan (PDF, 3.85 MB) Featured Data Plots SGP Data Plots (all) Experiment Planning Steering Committee Science Questions MC3E Proposal Abstract and Related Campaigns Meetings Cloud Life Cycle Working Group Contacts Michael Jensen, Lead Scientist Steering Committee Michael Jensen, Brookhaven

  3. ARM - VAP Process - mplavg

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productsmplavg Documentation & Plots Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : MPL: data averaged to fixed 30 second interval, e.g. for polarized data (MPLAVG) Instrument Categories Cloud Properties Output Products mplpolavg : Micropulse Lidar polarized (MPLPOL) data averaged to fixed 30 second interval Primary Measurements The following measurements are

  4. ARM - VAP Process - qmeaerilbl

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Productsqmeaerilbl Documentation & Plots Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : Comparison of Statistics or Clouds data from AERI vs. LBLRTM Model runs (QMEAERILBL) Instrument Categories Derived Quantities and Models, Radiometric \'typical\' channel 1 observed - calculated residuals \'typical\' channel 1 observed - calculated residuals The observed

  5. ARM - VAP Process - swfluxanal

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    Productsswfluxanal Documentation & Plots Technical Report Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : Shortwave Flux Analysis (SWFLUXANAL) Instrument Categories Cloud Properties, Radiometric The SW (shortwave) Flux Analysis VAP applies a clear-sky detection and fitting technique (Long and Ackerman 2000) to data from broadband SW radiometers located at the

  6. ARM - VAP Process - tdmadap

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    Productstdmadap Documentation & Plots tdmadap : XDC documentation Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : Aerosol Properties derived from TDMA Measurements (TDMADAP) Instrument Categories Aerosols Output Products tdmaccncoll : Tandem Differential Mobility Analyzer: Cloud Condensation Nuclei -- D. Collins Primary Measurements The following measurements

  7. ARM Southern Great Plains

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    With the rapid changes in the arctic environment, the North Slope of Alaska (NSA) has become a focal point for atmospheric and ecological research. Since 1997, the Atmospheric Radiation Measurement (ARM) Climate Research Facility has gathered climate data at its NSA site in Barrow, the northernmost city in the United States located on the edge of the Arctic Ocean. The ARM Facility established multiple climate research sites on the North Slope to provide data about Arctic clouds and

  8. ARM - VAP Product - tdmaccncoll

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    Productstdmadaptdmaccncoll Documentation tdmadap : XDC documentation Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP Output : TDMACCNCOLL Tandem Differential Mobility Analyzer: Cloud Condensation Nuclei -- D. Collins Active Dates 2005.10.07 - 2009.05.31 Originating VAP Process Aerosol Properties derived from TDMA Measurements : TDMADAP Measurements The measurements

  9. ARM - VAP Product - wsicloudsummary

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    Productswsicloudwsicloudsummary Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1027765 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Example wsicloudsummary Data Plot Example wsicloudsummary data plot VAP Output : WSICLOUDSUMMARY WSI: cloud and aerosol info, classification summary data Active Dates 1995.09.20 - 2004.01.12 Originating VAP Process

  10. ARM - VAP Product - wsifilesummary

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    Productswsicloudwsifilesummary Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1027767 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP Output : WSIFILESUMMARY WSI: images (GIF) and text representations of data existence Active Dates 1998.05.30 - 2001.07.30 Originating VAP Process Whole Sky Imager Cloud Products : WSICLOUD Measurements The

  11. ARM TR-047

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    7 Cloud Optical Properties from the Multi- Filter Shadowband Radiometer (MFRSRCLDOD): An ARM Value-Added Product December 2004 David D. Turner Chaomei Lo Pacific Northwest National Laboratory - Richland, Washington Qilong Min State University of New York (SUNY) - Albany, New York Work supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research David D. Turner et al., December 2004, ARM TR-047 Contents 1. Introduction

  12. ARM XDC Datastreams

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    StreamsOzone Monitoring Instrument Documentation OMI Instrument External Datastream Descriptions ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Ozone Monitoring Instrument (OMI) Information updated on April 10, 2008, 7:10 pm GMT General Data Description The OMI instrument distinguishes between aerosol types, such as smoke, dust, and sulfates, and can measure cloud pressure and coverage, which provide data to derive

  13. ARM - Datastreams - ecmwfsupp

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    Datastreamsecmwfsupp Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : ECMWFSUPP ECMWF: supplemental data, entire coverage Active Dates 1996.10.01 - 2015.09.30 Measurement Categories Atmospheric State, Cloud Properties, Radiometric, Surface Properties Originating Instrument European Centre for Medium Range Weather Forecasts Model Data (ECMWF) Description

  14. ARM - Datastreams - masc

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    Datastreamsmasc Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : MASC Multi-angle Snowflake Camera Active Dates 2015.10.25 - 2016.05.04 Measurement Categories Cloud Properties Originating Instrument Multi-Angle Snowflake Camera (MASC) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units

  15. ARM - Datastreams - ncepgfsatksprof

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    Datastreamsncepgfsatksprof Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : NCEPGFSATKSPROF NCEP GFS: vertical profiles of met quantities at sigma layers, at Atqasuk Active Dates 2004.12.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties Originating Instrument National Centers for Environment Prediction Global Forecast System

  16. ARM - Datastreams - ncepgfsatkzprof

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    Datastreamsncepgfsatkzprof Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : NCEPGFSATKZPROF NCEP GFS: vertical profiles of met quantities at standard heights, at Atqasuk Active Dates 2004.12.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties Originating Instrument National Centers for Environment Prediction Global Forecast System

  17. ARM - Datastreams - ncepgfsbrwsprof

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    Datastreamsncepgfsbrwsprof Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : NCEPGFSBRWSPROF NCEP GFS: vertical profiles of met quantities at sigma layers, at Barrow Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties Originating Instrument National Centers for Environment Prediction Global Forecast System

  18. ARM - Datastreams - ncepgfsbrwzprof

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    Datastreamsncepgfsbrwzprof Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : NCEPGFSBRWZPROF NCEP GFS: vertical profiles of met quantities at standard heights, at Barrow Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties Originating Instrument National Centers for Environment Prediction Global Forecast System

  19. ARM - Datastreams - ncepgfsmansprof

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    Datastreamsncepgfsmansprof Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : NCEPGFSMANSPROF NCEP GFS: vertical profiles of met quantities at sigma layers, at Manus Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties Originating Instrument National Centers for Environment Prediction Global Forecast System

  20. ARM - Datastreams - ncepgfsmanzprof

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    Datastreamsncepgfsmanzprof Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : NCEPGFSMANZPROF NCEP GFS: vertical profiles of met quantities at standard heights, at Manus Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties Originating Instrument National Centers for Environment Prediction Global Forecast System

  1. ARM - Datastreams - ncepgfsnausprof

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    Datastreamsncepgfsnausprof Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : NCEPGFSNAUSPROF NCEP GFS: vertical profiles of met quantities at sigma layers, at Nauru Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties Originating Instrument National Centers for Environment Prediction Global Forecast System

  2. ARM - Datastreams - ncepgfsnauzprof

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    Datastreamsncepgfsnauzprof Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : NCEPGFSNAUZPROF NCEP GFS: vertical profiles of met quantities at standard heights, at Nauru Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties Originating Instrument National Centers for Environment Prediction Global Forecast System

  3. ARM - Datastreams - ncepgfssprof

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    Datastreamsncepgfssprof Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : NCEPGFSSPROF NCEP GFS: vertical profiles of met quantities at sigma layers Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties Originating Instrument National Centers for Environment Prediction Global Forecast System (NCEPGFS) Measurements

  4. ARM - Datastreams - ncepgfszprof

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    Datastreamsncepgfszprof Documentation XDC documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : NCEPGFSZPROF NCEP GFS: vertical profiles of met quantities at standard heights Active Dates 2001.01.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud Properties Originating Instrument National Centers for Environment Prediction Global Forecast System (NCEPGFS)

  5. ARM - ERASUMS - News

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    govCampaignsEvaluation of Routine Atmospheric Sounding Measurements using Unmanned Systems (ERASMUS)News & Press Campaign Links Science Plan ERASMUS Backgrounder News & Press Images Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send News for ERASMUS Media Coverage Features ARM Climate Research Facility Getting an Inside View of Arctic Clouds November 16, 2015 Cooperative Institute for Research in Environmental Sciences ERASMUS: Unmanned

  6. ARM - Instrument - tdmadap

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    govInstrumentstdmadap Documentation TDMADAP : XDC documentation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Aerosol Properties derived from TDMA Measurements (TDMADAP) Instrument Categories Aerosols Primary Measurements The following measurements are those considered scientifically relevant. Cloud condensation nuclei Locations Southern Great Plains SGP X1 Browse Data External Data (satellites and

  7. ARM - Events Article

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    31, 2011 [Events] 2011 Radar Meteorology Conference Bookmark and Share The 35th Conference on Radar Meteorology, sponsored by the American Meteorological Society (AMS), will be held September 26-30, 2011, at the Omni William Penn Hotel in Pittsburgh, Pennsylvania. Of particular interest to the Atmospheric Radiation Measurement (ARM) community is the Short Course on Millimeter Wavelength Radars. Sponsored by ARM, this course is designed to provide students and scientists interested in cloud and

  8. ARM - Events Article

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    September 15, 2013 [Events, Facility News] 2013 Radar Meteorology Conference Bookmark and Share ARM radars operated at Cape Cod National Seashore from June 2012 through July 2013. ARM radars operated at Cape Cod National Seashore from June 2012 through July 2013. This week, radar engineers and science colleagues are gathering in Breckenridge, Colorado, for the American Meteorological Society's 36th Conference on Radar Meteorology, September 16-20. From new insights on Arctic cloud processes to

  9. ARM - Events Article

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    27, 2014 [Events, Facility News] International Collaborations Highlighted at EGU Assembly Bookmark and Share At the 2014 European Geophysical Union's (EGU) General Assembly in Vienna, Austria, researchers will hear how data from the Atmospheric Radiation Measurement (ARM) Climate Research Facility is contributing to advances in climate models. Through its fixed, mobile, and aerial observatories, ARM provides the global science community with free data about clouds, aerosols, precipitation, and

  10. ARM - Events Article

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    User Facility Featured at Atmospheric System Research Science Team Meeting Bookmark and Share During Tuesday afternoon's plenary session, Dave Turner provided an overview of the ARM Facility and expectations for new data associated with the Recovery Act. Turner is a scientist at the University of Wisconsin-Madison and co-leader of the ASR Cloud, Aerosol, and Precipitation Interactions Working Group. During Tuesday afternoon's plenary session, Dave Turner provided an overview of the ARM Facility

  11. ARM - Facility News Article

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    30, 2005 [Facility News] Coastal Clouds Field Campaign Takes Off in July Bookmark and Share The 2-channel NFOV gets careful attention as it joins the suite of instruments collecting data for the ARM Mobile Facility field campaign at Point Reyes National Seashore. Since March 2005, the ARM Mobile Facility (AMF) has been at Point Reyes National Seashore in northern California for the Marine Stratus Radiation, Aerosol, and Drizzle Intensive Operational Period. The goals of this 6-month field

  12. ARM - Facility News Article

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    Guest Instruments to Collect Aerosol Data During Coastal Field Campaign Bookmark and Share The counter-flow virtual impactor (inset), which can characterize aerosol particles in cloud droplets, joins a number of other guest instruments at the ARM Mobile Facility deployment site at Point Reyes National Seashore in California. The ARM Mobile Facility's (AMF's) inaugural field campaign, the Marine Stratus Radiation Aerosol and Drizzle (MASRAD) Intensive Operational Period, is well underway at Point

  13. ARM - Facility News Article

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    October 29, 2010 [Facility News] Developer of the Millimeter Cloud Radar Recognized at the ASR Fall Meeting Bookmark and Share During the Atmospheric System Research Fall Working Group Meeting in October, Dr. Kenneth Moran, National Oceanic and Atmospheric Administration (NOAA), was presented with a plaque in recognition of his 15 years of outstanding contributions to the Atmospheric Radiation Measurement (ARM) Program and ARM Climate Resesarch Facility. As the developer of the

  14. ARM - Facility News Article

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    September 30, 2004 [Facility News] New Instrumentation on Proteus Aircraft Tested Bookmark and Share This fall, the ARM-Unmanned Aerospace Vehicle Program-specifically, the Proteus aircraft-is participating in the Mixed-Phase Arctic Cloud Experiment (M-PACE) in Alaska. However, several of the aircraft's onboard instruments have been modified since its last deployment in November 2002. To verify instrument operation and calibration prior deployment as part of M-PACE, in late September 2004, ARM

  15. ARM - Facility News Article

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    High Speed Internet Service Established at Oliktok, Alaska Bookmark and Share Thanks to a collaboration with Barrow Arctic Science Consortium (BASC), Starband satellite internet service to Oliktok - located on the eastern side of ARM's North Slope of Alaska (NSA) site - is being established to support the ARM Program's Mixed-Phase Arctic Cloud Experiment (M-PACE). With various modes of 50kb up/500kb down data transfer available, this new internet service will substantially enhance data transfer

  16. ARM - Facility News Article

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    April 15, 2008 [Facility News] CLASIC Discussed at Workshop in Oklahoma Bookmark and Share Participants at the CLASIC workshop in March 2008 listen intently to one of the many presenters. In June 2007, ARM led the multi-agency Cloud and Land Surface Interaction Campaign (CLASIC) conducted at the ARM Southern Great Plains site. With scientists beginning to analyze the data, the Cooperative Institute for Mesoscale Meteorological Studies at the University of Oklahoma hosted a workshop on March

  17. ARM - Facility News Article

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    23, 2007 [Facility News] BAMS Features Three ARM Research Papers in February Bookmark and Share Image of the February 2007 BAMS cover In a tropospheric trifecta, three ARM research papers were featured in the February 2007 issue of the Bulletin of the American Meteorological Society, or BAMS. Two of the articles-Turner et. al., and Comstock et. al.,-cover studies of retrieval algorithms used to characterize the microphysical properties of thin liquid water clouds and upper tropospheric ice

  18. ARM - Facility News Article

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    , 2009 [Facility News] Mobile Facility Begins Marine Cloud Study in the Azores Bookmark and Share Located next to the airport on Graciosa Island, the ARM Mobile Facility's comprehensive and sophisticated instrument suite will obtain atmospheric measurements from the marine boundary layer. Located next to the airport on Graciosa Island, the ARM Mobile Facility's comprehensive and sophisticated instrument suite will obtain atmospheric measurements from the marine boundary layer. Extended

  19. ARM - Facility News Article

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    6, 2015 [Facility News] Students to Attend ARM Summer Training Event Bookmark and Share Twenty-six students from around the world were chosen to attend the upcoming ARM Summer Training and Science Applications event. From July 15-24 at the National Weather Center in Norman, Oklahoma, the graduate and postdoctoral students gained practical and theoretical knowledge about observing and modeling aerosols, clouds, and precipitation processes. The training was sponsored by the U.S. Department of

  20. ARM - Facility News Article

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    2, 2015 [Facility News, Publications] LASSO Implementation Strategy Report Available Bookmark and Share "Data cubes" that combine observations, model output, and metrics will be combined into a unified package. The ARM Climate Research Facility is entering an exciting new era where the application of ARM observations and data processing will be accelerated by routine, high-resolution modeling to enable better understanding of cloud, radiation, aerosol, and land-surface processes and

  1. ARM - Facility News Article

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    Field Campaign to Benefit from Multimillion Dollar Radar Technology Bookmark and Share A staff scientist from CIRPAS reviews the unique capabilities provided by the phased-array radar, mounted on the truck behind the group. In March, ARM scientists visited the Center for Interdisciplinary Remotely Piloted Aircraft Studies (CIRPAS) for a first-hand look at the state-of-the-art scanning radar that will be deployed as part of the Cloud Land Surface Interaction Campaign (CLASIC) at the ARM Southern

  2. ARM - Facility News Article

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    2, 2006 [Facility News] New NSA Site Manager Named; Science Liaison Joins the Team Bookmark and Share Dr. Mark Ivey to be NSA Site Manager beginning October 1. As of October 1, Dr. Mark Ivey officially became the ARM Climate Research Facility's North Slope of Alaska (NSA) Site Manager. From 1993 to 2000, Mark worked for the ARM Program as manager of the Tropical Western Pacific (TWP) Atmospheric Radiation and Cloud Station (ARCS) engineering team and ARCS integration site at Sandia National

  3. ARM - Facility News Article

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    7, 2009 [Facility News] Town Hall Meeting at AGU 2009 Fall Meeting Bookmark and Share ARM Climate Research Facility - New Measurement Capabilities for Climate Research Thursday, December 17, 6:15-7:15 pm, Moscone West Room 2002 American Recovery and Reinvestment Act American Recovery and Reinvestment Act Scientists from around the world use data from the ARM Climate Research Facility to study the interactions between clouds, aerosol and radiation. Through the American Recovery and Reinvestment

  4. ARM - Facility News Article

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    January 15, 2010 [Facility News] Radiometer Powered Up Down Under for Field Campaign at Gunn Point Bookmark and Share Near the tip of Australia's Northern Territory, Gunn Point is the location for the Darwin ARM Representativeness Experiment, or DARE. This offsite field campaign is obtaining measurements of solar and thermal energy and cloud properties, to compare against similar measurements collected at the permanent ARM site in Darwin, about 25 kilometers to the southwest of Gunn Point. Data

  5. ARM - Facility News Article

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    January 15, 2006 [Facility News] ARM Mobile Facility Begins Year-Long Deployment in Africa Bookmark and Share Beginning on January 9, the ARM Mobile Facility began officially collecting atmospheric data from a location at the airport in Niamey, Niger, Africa. As part of the RADAGAST field campaign, the AMF will measure the effects of absorbing aerosols from desert dust in the dry season, and the effects of deep convective clouds and associated moisture loadings on the transmission of atmospheric

  6. ARM - Campaign Instrument - cas

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    govInstrumentscas Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Cloud and Aerosol Spectrometer (CAS) Instrument Categories Aerosols, Airborne Observations, Cloud Properties Campaigns 2005 MASE-MArine Stratus Experiment-Pt. Reyes, CA [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2005.07.05 - 2005.07.27 2006 MAX-Mex-Megacity Aerosol eXperiment - Mexico City [ Download Data ] Off Site Campaign :

  7. ARM - Campaign Instrument - cldaerosmicro

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    govInstrumentscldaerosmicro Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Cloud and Aerosol Microphysical Properties (CLDAEROSMICRO) Instrument Categories Aerosols, Airborne Observations, Cloud Properties Campaigns 2005 MASE-MArine Stratus Experiment-Pt. Reyes, CA [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2005.07.05 - 2005.07.27 2006 MAX-Mex-Megacity Aerosol eXperiment - Mexico City [ Download

  8. ARM - VAP Product - aerilblclouds

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    Productsqmeaerilblaerilblclouds Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1027274 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP Output : AERILBLCLOUDS AERI: Line-by-Line comparison model, clouds Active Dates 1994.04.11 - 2007.06.06 Originating VAP Process Comparison of Statistics or Clouds data from AERI vs. LBLRTM Model runs :

  9. ARM XDC Datastreams

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    StreamsMinnis Cloud Products Using LBTM Algorithm Documentation LBTM-MINNIS Instrument External Datastream Descriptions ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Minnis Cloud Products Using LBTM Algorithm (LBTM-MINNIS) Information updated on April 23, 2012, 10:43 pm GMT General Data Description The Layered Bispectral Threshold Method (LBTM) uses the 0.65um and 10.8 um channel data from the Visible Infrared

  10. ARM - Events Article

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    August 13, 2008 [Events] Joint ARM Cloud Properties and Aerosol Working Group Meeting to be Held in November Bookmark and Share The Joint ARM Cloud Properties and Aerosol Working Group Meeting will be held November 11-13, 2008, at the National Conference Center in Lansdowne, VA. The cost will be $200/day and includes hotel, parking, meals and meeting rooms. If you do not plan to stay overnight at the National Conference Center, there is a day guest rate of $59 per day that includes lunch. There

  11. ARM - Facility News Article

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    15, 2009 [Facility News] Internet Upgrade Speeds Data Transfer from Tropics Bookmark and Share [http://images.arm.gov/armimages/MMCR0/MMCR.mpg][View this video] to see how the millimeter wave cloud radar works. In October 2008, a new higher-speed internet connection was hooked up for the ARM site in Darwin, Australia, at no extra cost. This upgrade enables spectral data-the base for determining reflectivity, vertical velocity, and spectral width-obtained by the millimeter wave cloud radar (MMCR)

  12. ARM - Facility News Article

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    AWARE Going to the Ends of the Earth to Help Improve Climate Science Bookmark and Share Extensive Modifications and Testing Complete, Instruments En Route to Antarctica ARM's most advanced cloud and aerosol instrumentation will be housed at McMurdo Station, the hub of the U.S. Antarctic Program. ARM's most advanced cloud and aerosol instrumentation will be housed at McMurdo Station, the hub of the U.S. Antarctic Program. Antarctica is the highest, driest, coldest, and windiest continent. It

  13. ARM - ARM Logos

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    govPublicationsARM Logos Publications Journal Articles Conference Documents Program Documents Technical Reports Publications Database Public Information Materials Image Library...

  14. ARM - Campaign Instrument - cep

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    govInstrumentscep Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Cloud Extinction Probe (CEP) Instrument Categories Airborne Observations, Cloud Properties Campaigns Indirect and Semi-Direct Aerosol Campaign (ISDAC) [ Download Data ] North Slope Alaska, 2008.04.01 - 2008.04.30 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for

  15. ARM TR-008

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    9 Evaluation of Mixed-Phase Cloud Parameterizations in Short-Range Weather Forecasts with CAM3 and AM2 for Mixed-Phase Arctic Cloud Experiment Third Quarter 2007 ARM Metric Report June 2007 Shaocheng Xie, James Boyle, and Stephen Klein Lawrence Livermore National Laboratory Livermore, California Xiaohong Liu and Steven Ghan Pacific Northwest National Laboratory Richland, Washington Work supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research

  16. ARM - News & Press

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    News & Press Related Links SPARTICUS Home AAF Home Deployment Operations Measurements SGP Data Plots NASA Data Plots ARM Data Discovery Browse Data Experiment Planning SPARTICUS Proposal Abstract Science Questions Science and Operations (PDF, 1.01M) SPARTICUS Wiki News News & Press Backgrounder (PDF, 269K) Contacts Gerald Mace, Lead Scientist News & Press Features Cirrus Clouds Hold Clues to Climate January 6, 2010 Happy New (fiscal) Year! Cloud Droplet Probe Arrives in Time for

  17. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Scientists Convene in Australia to Plan International Cloud Experiment Bookmark and Share During TWP-ICE, cloud property data will be obtained from numerous research aircraft and a network of surface-based remote sensing sites, including a ship operating in the Timor Sea and numerous ground sites in a 200 km diameter around the ARM Climate Research Facility site in Darwin, Australia. Coming from as far away as Italy, Switzerland, and the United States, a 45 member team gathered in Darwin,

  18. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    9, 2011 [Facility News] Forecasting Exercise Begins Oklahoma Storm Study Count Down Bookmark and Share Clouds like this, called by the name "anvil" for its shape, are one type of cloud system researchers hope to encounter during MC3E. Beginning April 2011, the ARM Southern Great Plains (SGP) site in north-central Oklahoma will host the first major field campaign to take advantage of numerous new radars and other remote sensing instrumentation installed throughout the site with funding

  19. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Upgrade to Millimeter Wave Cloud Radar Increases Volume of Data Collection Bookmark and Share In mid-April, hardware and software upgrades to the millimeter wave cloud radar (MMCR) at the ARM Climate Research Facility's North Slope of Alaska (NSA) were completed. Hardware upgrades included replacing the OS/2 and Solaris computers with two Windows 2000 computers. One of these computers is for the MMCR radar. It now has a new digital signal processing board that allows much more efficient

  20. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    April 30, 2008 [Facility News] Arctic Aerosol Study Flies By Bookmark and Share Ending its mission with a final flight on April 30, 2008, the Indirect and Semi-Direct Aerosol Campaign (ISDAC) flew a total of 103 research hours, completing 27 science flights primarily in the region around the ARM North Slope of Alaska site in Barrow. These flights included several golden cases where both cloud and aerosol measurements were obtained above, within, and below mixed-phase cloud layers. In addition,

  1. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    31, 2009 [Facility News] New Cloud Radar to Join Mobile Facility on Graciosa Island Bookmark and Share These schematics illustrate the rotational capabilities of the new scanning radar. Much like an operational weather radar, the design allows the antenna to scan any portion of the sky; quite a departure from the one-directional beam of traditional ARM cloud radars. (illustration courtesy of ProSensing, Inc.) These schematics illustrate the rotational capabilities of the new scanning radar. Much

  2. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    30, 2009 [Facility News] ARM Aerial Facility Leads International Discussions on Aircraft Research Bookmark and Share Five research aircraft participated in the VAMOS Ocean-Cloud-Atmosphere-Land Study regional experiment in Chile in October 2008, including (front) a Grumman Model Gulfstream-1 from the United States and (back) a British Aerospace 146 from the United Kingdom. Five research aircraft participated in the VAMOS Ocean-Cloud-Atmosphere-Land Study regional experiment in Chile in October

  3. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    15, 2008 [Facility News] New Radiometer Tested for Measuring Thin Clouds Bookmark and Share The TCRSR is shown here on the roof of the Radiometer Calibration Facility at the SGP site. Two shadowbands rotate around the radiometer's sensor, located just inside the smaller shadowband. They reflect light away from the sensor at multiple angles so that it simultaneously records signals of scattered light. A Thin-Cloud Rotating Shadowband Radiometer (TCRSR) has completed a month of testing at the ARM

  4. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    April 23, 2008 [Facility News] FY 2009 ARM Science Solicitation Announced Bookmark and Share DOE's Office of Biological and Environmental Research (BER) is now accepting applications to develop innovative methods for observational data analysis and utilize the resulting knowledge from such analyses to improve cloud parameterizations. The intent is to improve the modeling of cloud properties and processes and their impact on the atmospheric radiation balance. Selected research would be part of

  5. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    February 28, 2006 [Facility News] Network of Infrared Thermometers Nearly Complete at SGP Bookmark and Share Red dots indicate extended facilities at SGP with the new IRTs installed; green dots indicate future installations. As reported in April 2005, a network of infrared thermometers (IRT) is being installed throughout the ARM Southern Great Plains (SGP) site for the purpose of measuring cloud base temperature and inferring cloud base height across the domain. These measurements will enhance

  6. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    5, 2010 [Data Announcements, Facility News] New Datastream Identifies Nauru Data Influenced by Clouds Bookmark and Share A new data set that identifies periods when Nauru data may be affected by island-influenced clouds has been produced by Chuck Long, site scientist for the ARM Tropical Western Pacific site. The Nauru island effect (NIE) data set currently covers the period from September 2005 to May 2010 and will be updated periodically as new data are obtained. This data set will help

  7. Evaluation of high-level clouds in cloud resolving model simulations...

    Office of Scientific and Technical Information (OSTI)

    Evaluation of high-level clouds in cloud resolving model simulations with ARM and KWAJEX observations: HIGH CLOUD IN CRM Citation Details In-Document Search This content will ...

  8. Cloud Optical Properties from the Multi-Filter Shadowband Radiometer...

    Office of Scientific and Technical Information (OSTI)

    Cloud Optical Properties from the Multi-Filter Shadowband Radiometer (MFRSRCLDOD): An ARM ... 7. The retrieval assumes a single cloud layer consisting solely of liquid water drops. ...

  9. DOE/SC-ARM-15-084

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    4 2015 ANNUAL REPORT Environmental Management ARM Climate Research Facility ANNUAL REPORT - 2015 ARM Climate Research Facility ANNUAL REPORT - 2015 3 From the ARM Program Manager Developing the Next-Generation ARM Facility For more than 20 years, the Atmospheric Radiation Measurement (ARM) Climate Research Facility has blazed the trail in providing the world's atmospheric scientists with continuous observations of cloud and aerosol properties and their impacts on Earth's energy balance. The

  10. ARM - Data Announcements Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    March 6, 2008 [Data Announcements] New ARM PI Product-Merged MMCR and WSR-88D Data Sets Bookmark and Share A new ARM Principal Investigator (PI) product-Merged MMCR and WSR-88D Data sets (PI:X. Dong)-is now available at the ARM Climate Research Facility Data Archive. This data set merges Millimeter Wavelength Cloud Radar (MMCR) reflectivity data with National Weather Service precipitation radar (WSR-88D) observations to provide improved radar reflectivity profiles in situations where the MMCR

  11. ARM - Facility News Article

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    January 21, 2008 [Facility News] ARM Kicks Off 88th American Meteorological Society Annual Meeting at WeatherFest Bookmark and Share Jim Mather, ARM Technical Director, demonstrated "cloud in a jar" to interested WeatherFest participants. On January 20, staff from the ARM Climate Research Facility participated in the 7th Annual WeatherFest, an interactive science and weather fair for the public. WeatherFest kicks off the 88th American Meteorological Society annual meeting in New

  12. ARM Science Team Meeting Scheduled The 11th Annual ARM Science

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1 ARM Science Team Meeting Scheduled The 11th Annual ARM Science Team meeting is scheduled for March 19-23, 2001, in Atlanta, Georgia. Members of the science team will exchange research results achieved by using ARM data. The science team is composed of working groups that investigate four topics: instantaneous radiative flux, cloud parameterizations and modeling, cloud properties, and aerosols. The annual meeting brings together the science team's 150 members to discuss issues related to ARM

  13. ARM North Slope of Alaska

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    In 1997, the DOE Atmospheric Radiation Measurement (ARM) Climate Research Facility established research sites on the North Slope of Alaska (NSA), to provide data about cloud and radiative processes in cold environments and high latitudes. Comprehensive measurements from ARM's state-of-the-art instrument systems at Barrow and Oliktok Point will help scientists improve the understanding of high-latitude cloud and radiation processes, and their representation in global climate models. More

  14. ARM West Antarctic Radiation Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    West Antarctic Radiation Experiment of the most advanced atmospheric research instrumentation for cloud, radiative, and aerosol observations. From the fall of 2015 to early 2017, the Atmospheric Radiation Measurement (ARM) West Antarctic Radiation Experiment (AWARE) will gather data from McMurdo Station at the southern tip of Antarctica's Ross Ice Shelf. Using a portable observatory ARM Mobile Facility (AMF), researchers will be measuring clouds, aerosols, and energy coming from the sun and

  15. ARM: Millimeter Wave Cloud Radar (MMCR), replaces mmcrcal and mmcrmoments datastreams following C-40 processor upgrade of 2003.09.09

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Karen Johnson; Nitin Bharadwaj

    1990-01-01

    Millimeter Wave Cloud Radar (MMCR), replaces mmcrcal and mmcrmoments datastreams following C-40 processor upgrade of 2003.09.09

  16. Use of the ARM Measurements of Spectral Zenith Radiance for Better...

    Office of Scientific and Technical Information (OSTI)

    ARM Mobile Facility deployments, and second, making our algorithms part of ARM's ... Country of Publication: United States Language: English Subject: 58 GEOSCIENCES Cloud, ...

  17. ARM - Publications: Science Team Meeting Documents: Autonomous Retrieval of

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cloud and Aerosol Properties from ARM Micropulse Lidar Autonomous Retrieval of Cloud and Aerosol Properties from ARM Micropulse Lidar Flynn, Connor Pacific Northwest National Laboratory Christy, Jason Columbia University Beus, Sherman PNNL Micropulse Lidar (MPL) have been a core component of ARM active remote sensing for more than a decade. To date, autonomous value-added products developed from the MPL have focused strictly on determination of cloud base and cloud boundaries. We present

  18. ARM - About ARM

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    At the sites, scientists use scientific instruments and computers to gather information to study sunlight, radiant energy, and how clouds affect temperatures, weather, and climate. ...

  19. ARM - ARM Organization

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Scientists use these data to study the effects and interactions of sunlight, clouds, and radiant energy, as well as interdisciplinary research involving hydrology, ecology, and ...

  20. ARM - ARM MJO Investigation Experiment (AMIE)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Related Links amie.png 34h AMIE Home cindy.png 50h CINDY2011 dynamo.png 34h DYNAMO ARM Data Discovery Browse Data Outreach News & Press Blog Backgrounder (PDF, 1.2MB) Education Flyer (PDF, 2.0MB) Images ARM flickr site Official AMIE Logo AMIE Gear Experiment Planning Steering Committee AMIE-MANUS Proposal Abstract AMIE-GAN Proposal Abstract Meetings Cloud Life Cycle Working Group Deployment Operations Science Plan - TWP Manus Site (PDF, 2.1 MB) Science Plan - Gan Island Site (PDF, 2.0 MB)