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Sample records for arm zenith radar

  1. ARM: Ka ARM Zenith Radar (KAZR): filtered spectral data, moderate...

    Office of Scientific and Technical Information (OSTI)

    Title: ARM: Ka ARM Zenith Radar (KAZR): filtered spectral data, moderate sensitivity mode, cross-polarized mode Ka ARM Zenith Radar (KAZR): filtered spectral data, moderate ...

  2. ARM: Ka ARM Zenith Radar (KAZR): filtered spectral data, high...

    Office of Scientific and Technical Information (OSTI)

    Ka ARM Zenith Radar (KAZR): filtered spectral data, high sensitivity mode, co-polarized mode Authors: Dan Nelson ; Joseph Hardin ; Iosif 1 ; Bradley Isom ; Karen Johnson ; Nitin ...

  3. Ka-Band ARM Zenith Radar (KAZR) Instrument Handbook

    SciTech Connect (OSTI)

    Widener, K; Bharadwaj, N; Johnson, K

    2012-03-06

    The Ka-band ARM zenith radar (KAZR) is a zenith-pointing Doppler cloud radar operating at approximately 35 GHz. The KAZR is an evolutionary follow-on radar to ARM's widely successful millimeter-wavelength cloud radar (MMCR). The main purpose of the KAZR is to provide vertical profiles of clouds by measuring the first three Doppler moments: reflectivity, radial Doppler velocity, and spectra width. At the sites where the dual-polarization measurements are made, the Doppler moments for the cross-polarization channel are also available. In addition to the moments, velocity spectra are also continuously recorded for each range gate.

  4. ARM: Ka ARM Zenith Radar (KAZR): cirrus mode (Dataset) | Data...

    Office of Scientific and Technical Information (OSTI)

    OSTI Identifier: 1025213 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type: Numeric Data Research Org: Atmospheric Radiation Measurement (ARM) Archive, Oak ...

  5. 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 :...

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

    Office of Scientific and Technical Information (OSTI)

    Language: English Subject: 54 Environmental Sciences Atmospheric turbulence; Cloud particle size distribution; Hydrometeor fall velocity; Radar Doppler; Radar polarization; Radar ...

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

    Office of Scientific and Technical Information (OSTI)

    Availability: ORNL Language: English Subject: 54 Environmental Sciences Cloud particle size distribution; Hydrometeor fall velocity; Radar polarization; Radar reflectivity Dataset ...

  8. CIMEL Measurements of Zenith Radiances at the ARM SGP Site

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

    CIMEL Measurements of Zenith Radiances at the ARM SGP Site W. J. Wiscombe National Aeronautics and Space Administration Goddard Space Flight Center Climate and Radiation Branch Greenbelt, Maryland A. Marshak and K. Evans Joint Center for Earth Systems Technology University of Maryland Baltimore, Maryland Y. Knyazikhin Department of Geography Boston University Boston, Massachusetts H. W. Barker Environment Canada Downsview, Ontario, Canada C. F. Pavloski Department of Meteorology Pennsylvania

  9. ARM - Measurement - Radar polarization

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

    polarization 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 : Radar polarization The temporal and geometric behavior of the electric field vector of an electromagnetic wave transmitted or received by a radar system, e.g. elliptical polarization, differential reflectivity, phase shift, co-polar correlation coefficient, linear depolarization ratio. Categories Cloud Properties Instruments The above

  10. Use of the ARM Measurements of Spectral Zenith Radiance for Better...

    Office of Scientific and Technical Information (OSTI)

    Citation Details In-Document Search Title: Use of the ARM Measurements of Spectral Zenith ... situation, with particular emphasis on cloud optical depth and effective particle size. ...

  11. ARM Southern Great Plains

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

    System Radiometer Calibration Facility Equipment Repair Lab Main Office Raman Lidar Doppler Lidar and Radar Wind Profiler Ka-Band Scanning ARM Cloud Radar Ka-Zenith Radar...

  12. 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...

  13. ARM: Ka ARM Zenith Radar (KAZR): filtered spectral data, moderate...

    Office of Scientific and Technical Information (OSTI)

    Authors: Joseph Hardin ; Dan Nelson ; Iosif 1 ; Bradley Isom ; Karen Johnson ; Alyssa Matthews ; Nitin Bharadwaj + Show Author Affiliations (Andrei) Lindenmaier Publication Date: ...

  14. ARM: Ka ARM Zenith Radar (Dataset) | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    Authors: Joseph Hardin ; Dan Nelson ; Iosif 1 ; Bradley Isom ; Karen Johnson ; Alyssa Matthews ; Nitin Bharadwaj + Show Author Affiliations (Andrei) Lindenmaier Publication Date: ...

  15. ARM: Ka ARM Zenith Radar (KAZR): precipitation mode (Dataset...

    Office of Scientific and Technical Information (OSTI)

    Authors: Joseph Hardin ; Dan Nelson ; Iosif 1 ; Bradley Isom ; Karen Johnson ; Alyssa Matthews ; Nitin Bharadwaj + Show Author Affiliations (Andrei) Lindenmaier Publication Date: ...

  16. Python-ARM Radar Toolkit

    Energy Science and Technology Software Center (OSTI)

    2013-03-17

    The Python-ARM Radar Toolkit (Py-ART) is a collection of radar quality control and retrieval codes which all work on two unifying Python objects: the PyRadar and PyGrid objects. By building ingests to several popular radar formats and then abstracting the interface Py-ART greatly simplifies data processing over several other available utilities. In addition Py-ART makes use of Numpy arrays as its primary storage mechanism enabling use of existing and extensive community software tools.

  17. 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...

  18. ARM - Radar Backgrounder

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

    Tuesday, A24B-02: Use of Dual Frequency Doppler Radar to Infer Cloud and Precipitation Properties and Air Motion Statistics. Science Team: Mike Jensen, Brookhaven National ...

  19. 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 kazrcormd : Ka ARM Zenith Radar (KAZR): moderate

  20. 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 ...

  1. 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.

  2. 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.

  3. 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

  4. 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...

  5. 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 ; ...

  6. ARM - Site Instruments

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

    ARM Zenith Radar Cloud Properties Browse Data Single installation LDIS Laser Disdrometer Surface Meteorology Browse Data Installed at 2 facilities MET Surface ...

  7. ARM - Site Instruments

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

    Browse Plots Browse Data Single installation KAZR Ka ARM Zenith Radar Cloud Properties Browse Data Single installation LDIS Laser Disdrometer Surface Meteorology Browse ...

  8. Science Goals for the ARM Recovery Act Radars

    SciTech Connect (OSTI)

    JH Mather

    2012-05-29

    field. These additional microphysical measurements would allow detailed cloud properties to be derived even in the presence of light precipitation. It is important to couple these detailed measurements of cloud microphysics to vertical motion on the cloud scale to couple microphysics with meteorological processes. Vertically pointing Doppler radars provide the vertical motion of cloud particles but, to separate particle motion from air motion, a wind profiler is required. The American Recovery and Reinvestment Act provided the means to address these needs and implement a multi-frequency suite of radars, including scanning radars, at each of the ARM sites. In addition, Doppler lidars have been deployed at several sites. With these new measurement capabilities, ARM has the measurement capabilities to tackle the problems of improving microphysical profile descriptions and evaluating the relationship between our current narrow-field-of view, zenith perspective on clouds to a description of the full 3D cloud field and its temporal evolution.

  9. ARM: 1290-MHz Radar Wind Profiler, precipitation moments data...

    Office of Scientific and Technical Information (OSTI)

    1290-MHz Radar Wind Profiler, precipitation moments data Title: ARM: 1290-MHz Radar Wind Profiler, precipitation moments data 1290-MHz Radar Wind Profiler, precipitation moments ...

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

    Office of Scientific and Technical Information (OSTI)

    Radar Title: ARM: Marine W-band (95 GHz) ARM Cloud Radar Marine W-band (95 GHz) ARM Cloud Radar Authors: Joseph Hardin ; Bradley Isom ; Alyssa Matthews ; Karen Johnson ; Nitin ...

  11. ARM - Field Campaign - NSA Scanning Radar IOP

    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 : NSA Scanning Radar IOP ... Low-level mixed-phase clouds, frequently present over the North Slope of Alaska (NSA) ...

  12. ARM - Evaluation Product - Precipitation Radar Moments Mapped...

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

    We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Precipitation Radar Moments Mapped to a Cartesian Grid The Scanning...

  13. ARM Climate Research Facility Radar Operations Plan (Program...

    Office of Scientific and Technical Information (OSTI)

    Climate Research Facility Radar Operations Plan Citation Details In-Document Search Title: ARM Climate Research Facility Radar Operations Plan Roles, responsibilities, and ...

  14. ARM: 1290-MHz Beam-Steered Radar Wind Profiler: Precipitation...

    Office of Scientific and Technical Information (OSTI)

    Precipitation Datastream Title: ARM: 1290-MHz Beam-Steered Radar Wind Profiler: Precipitation Datastream 1290-MHz Beam-Steered Radar Wind Profiler: Precipitation Datastream ...

  15. 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 ...

  16. 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 ; ...

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

    Office of Scientific and Technical Information (OSTI)

    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 ...

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

    Office of Scientific and Technical Information (OSTI)

    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 ...

  19. 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 ...

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

  1. ARM - Datastreams - kazrspeccmaskprcross

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

    Datastreamskazrspeccmaskprcross 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 : KAZRSPECCMASKPRCROSS Ka ARM Zenith Radar (KAZR): raw spectral data Active Dates 2015.10.01 - 2016.09.01 Measurement Categories Cloud Properties Originating Instrument Ka ARM Zenith Radar (KAZR) Measurements Only measurements considered scientifically relevant are shown below by default. Show

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

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

    W-Band ARM Cloud Radar - Specifications and Design K. B. Widener Pacific Northwest ... to develop and deploy the W-band ARM Cloud Radar (WACR) at the SGP central facility. ...

  3. ARM - Evaluation Product - Radar Contoured Frequency by Altitude Diagram

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

    from ARM Radar Simulator ProductsRadar Contoured Frequency by Altitude Diagram from ARM Radar Simulator ARM Data Discovery Browse Data Documentation Use the Data File Inventory tool to view data availability at the file level. Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Radar Contoured Frequency by Altitude Diagram from ARM Radar Simulator [ ARM research - evaluation data product ] The data products are generated from

  4. ARM: 915-MHz Radar Wind Profiler: Wind Moments, operating in...

    Office of Scientific and Technical Information (OSTI)

    915-MHz Radar Wind Profiler: Wind Moments, operating in low power mode Title: ARM: 915-MHz Radar Wind Profiler: Wind Moments, operating in low power mode 915-MHz Radar Wind ...

  5. Scanning ARM Cloud Radar Handbook (Technical Report) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Because RF attenuation increases with atmospheric water vapor content, ARM's Tropical ... Subject: 54 ENVIRONMENTAL SCIENCES; ATTENUATION; CLOUDS; MANUALS; RADAR; WATER VAPOR Word ...

  6. 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, ... Widener, Kevin Pacific Northwest National Laboratory Category: Instruments Two W-band ARM ...

  7. Properties of tropical convection observed by ARM millimeter-radars

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

    Properties of tropical convection observed by ARM millimeter-radars Haynes, John Colorado State University Stephens, Graeme Colorado State University Category: Cloud Properties The results of an analysis of tropical cloud systems observed from a variety of vertically pointing radar systems are described. In particular, observations taken during five years of operation of the ARM millimeter wavelength radar system (MMCR) at Manus Island in the Tropical West Pacific region are characterized into

  8. Joint retrievals of cloud and drizzle in marine boundary layer clouds using ground-based radar, lidar and zenith radiances

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

    Fielding, M. D.; Chiu, J. C.; Hogan, R. J.; Feingold, G.; Eloranta, E.; O'Connor, E. J.; Cadeddu, M. P.

    2015-02-16

    Active remote sensing of marine boundary-layer clouds is challenging as drizzle drops often dominate the observed radar reflectivity. We present a new method to simultaneously retrieve cloud and drizzle vertical profiles in drizzling boundary-layer cloud using surface-based observations of radar reflectivity, lidar attenuated backscatter, and zenith radiances. Specifically, the vertical structure of droplet size and water content of both cloud and drizzle is characterised throughout the cloud. An ensemble optimal estimation approach provides full error statistics given the uncertainty in the observations. To evaluate the new method, we first perform retrievals using synthetic measurements from large-eddy simulation snapshots of cumulusmore » under stratocumulus, where cloud water path is retrieved with an error of 31 g m−2. The method also performs well in non-drizzling clouds where no assumption of the cloud profile is required. We then apply the method to observations of marine stratocumulus obtained during the Atmospheric Radiation Measurement MAGIC deployment in the northeast Pacific. Here, retrieved cloud water path agrees well with independent 3-channel microwave radiometer retrievals, with a root mean square difference of 10–20 g m−2.« less

  9. Joint retrievals of cloud and drizzle in marine boundary layer clouds using ground-based radar, lidar and zenith radiances

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

    Fielding, M. D.; Chiu, J. C.; Hogan, R. J.; Feingold, G.; Eloranta, E.; O'Connor, E. J.; Cadeddu, M. P.

    2015-07-02

    Active remote sensing of marine boundary-layer clouds is challenging as drizzle drops often dominate the observed radar reflectivity. We present a new method to simultaneously retrieve cloud and drizzle vertical profiles in drizzling boundary-layer clouds using surface-based observations of radar reflectivity, lidar attenuated backscatter, and zenith radiances under conditions when precipitation does not reach the surface. Specifically, the vertical structure of droplet size and water content of both cloud and drizzle is characterised throughout the cloud. An ensemble optimal estimation approach provides full error statistics given the uncertainty in the observations. To evaluate the new method, we first perform retrievalsmore » using synthetic measurements from large-eddy simulation snapshots of cumulus under stratocumulus, where cloud water path is retrieved with an error of 31 g m-2. The method also performs well in non-drizzling clouds where no assumption of the cloud profile is required. We then apply the method to observations of marine stratocumulus obtained during the Atmospheric Radiation Measurement MAGIC deployment in the Northeast Pacific. Here, retrieved cloud water path agrees well with independent three-channel microwave radiometer retrievals, with a root mean square difference of 10–20 g m-2.« less

  10. 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 ...

  11. 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 ...

  12. DOE/SC-ARM-13-008 First ARM/ASR Radar Workshop: Workshop

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

    ... a Reliable ARM Radar Network ......facility expected to support biomedical science and ... IRIS software license to utilize spare RVP9s 3 ...

  13. ARM - Evaluation Product - Scanning ARM Cloud Radar Corrections...

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

    added moment variables (reflectivitycorrected, meandopplervelocitycorrected, and meandopplervelocitycorrected2) provide radar moments filtered to remove measurement...

  14. ARM - Datastreams - kazraux

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

    Datastreamskazraux Documentation Data Quality Plots Citation DOI: 10.5439/1025211 [ 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 : KAZRAUX Ka ARM Zenith Radar (KAZR): auxiliary data Active Dates 2011.01.18 - 2016.09.02 Originating Instrument Ka ARM Zenith Radar (KAZR) Measurements Only measurements considered scientifically relevant are shown below by default. Show all

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

    Office of Scientific and Technical Information (OSTI)

    Availability: ORNL Language: English Subject: 54 Environmental Sciences Cloud particle size distribution; Hydrometeor fall velocity; Radar polarization; Radar reflectivity Dataset ...

  16. ARM - Evaluation Product - Corrected Precipitation Radar Moments...

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

    ProductsCorrected Precipitation Radar Moments in Antenna Coordinates Documentation Use the Data File Inventory tool to view data availability at the file level. Comments? We would...

  17. 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 ; ...

  18. DOE/SC-ARM-12-006 ARM Climate Research Facility Radar Operations...

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

    6 ARM Climate Research Facility Radar Operations Plan May 2012 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States...

  19. X-band Scanning ARM Precipitation Radar (X-SAPR) Instrument Handbook...

    Office of Scientific and Technical Information (OSTI)

    X-band Scanning ARM Precipitation Radar (X-SAPR) Instrument Handbook Citation Details In-Document Search Title: X-band Scanning ARM Precipitation Radar (X-SAPR) Instrument Handbook ...

  20. C-Band Scanning ARM Precipitation Radar (C-SAPR) Handbook (Technical...

    Office of Scientific and Technical Information (OSTI)

    C-Band Scanning ARM Precipitation Radar (C-SAPR) Handbook Citation Details In-Document Search Title: C-Band Scanning ARM Precipitation Radar (C-SAPR) Handbook The C-band scanning ...

  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. 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.

  3. 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.

  4. ARM - Field Campaign - DC-8 Cloud Radar Campaign

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

    govCampaignsDC-8 Cloud Radar Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : DC-8 Cloud Radar Campaign 1998.06.16 - 1998.06.28 Lead Scientist : Stephen Sekelsky Data Availability Quick-look images and datalogs are available from http://abyss.ecs.umass.edu/CART98DC8/ Data files are available to interested science team members. Contact Lihua Li (lihua@mirsl.ecs.umass.edu) or Steve Sekelsky (sekelsky@mirsl.ecs.umass.edu). Summary

  5. 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.

  6. 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

  7. ARM: Spectra from 1290-MHz Beam-Steered Radar Wind Profiler ...

    Office of Scientific and Technical Information (OSTI)

    wind mode Title: ARM: Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) operating in low-low wind mode Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) ...

  8. ARM: Spectra from 1290-MHz Beam-Steered Radar Wind Profiler ...

    Office of Scientific and Technical Information (OSTI)

    wind mode Title: ARM: Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) operating in low wind mode Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) ...

  9. ARM: Spectra from 1290-MHz Beam-Steered Radar Wind Profiler ...

    Office of Scientific and Technical Information (OSTI)

    Title: ARM: Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) operating in low-low precipitation mode Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) ...

  10. ARM: 1290-MHz Beam-Steered Radar Wind Profiler: Wind and Moment...

    Office of Scientific and Technical Information (OSTI)

    Wind and Moment Averages Title: ARM: 1290-MHz Beam-Steered Radar Wind Profiler: Wind and Moment Averages 1290-MHz Beam-Steered Radar Wind Profiler: Wind and Moment Averages ...

  11. ARM: Spectra from 1290-MHz Beam-Steered Radar Wind Profiler ...

    Office of Scientific and Technical Information (OSTI)

    Title: ARM: Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) operating in low precipitation mode Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) ...

  12. ARM - VAP Product - kazrcorge

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

    Productskazrcorkazrcorge 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 : KAZRCORGE Ka ARM Zenith Radar (KAZR): general mode Corrected Active Dates 2011.10.09 - 2012.02.07 Originating VAP Process KAZR Corrected Data : KAZRCOR Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements

  13. ARM - VAP Product - kazrcorhi

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

    Productskazrcorkazrcorhi 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 : KAZRCORHI Ka ARM Zenith Radar (KAZR): highest sensitivity mode Corrected Active Dates 2011.10.07 - 2012.02.07 Originating VAP Process KAZR Corrected Data : KAZRCOR Measurements Only measurements considered scientifically relevant are shown below by default. Show all

  14. DOE/SC-ARM-12-009 ARM Radar Organization JW Voyles

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

    9 ARM Radar Organization JW Voyles June 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 not infringe privately owned rights. Reference herein

  15. 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.

  16. ARM: Millimeter Wavelength Cloud Radar (MMCR): monitoring data...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Availability: ORNL Language: English Subject: 54 Environmental Sciences Horizontal wind; Radar Doppler; Radar reflectivity; Vertical velocity ...

  17. ARM - PI Product - Merged and corrected 915 MHz Radar Wind Profiler...

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

    ProductsMerged and corrected 915 MHz Radar Wind Profiler moments ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at ...

  18. ARM KAZR-ARSCL Value Added Product

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

    Jensen, Michael

    The Ka-band ARM Zenith Radars (KAZRs) have replaced the long-serving Millimeter Cloud Radars, or MMCRs. Accordingly, the primary MMCR Value Added Product (VAP), the Active Remote Sensing of CLouds (ARSCL) product, is being replaced by a KAZR-based version, the KAZR-ARSCL VAP. KAZR-ARSCL provides cloud boundaries and best-estimate time-height fields of radar moments.

  19. ARM KAZR-ARSCL Value Added Product

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

    Jensen, Michael

    2012-09-28

    The Ka-band ARM Zenith Radars (KAZRs) have replaced the long-serving Millimeter Cloud Radars, or MMCRs. Accordingly, the primary MMCR Value Added Product (VAP), the Active Remote Sensing of CLouds (ARSCL) product, is being replaced by a KAZR-based version, the KAZR-ARSCL VAP. KAZR-ARSCL provides cloud boundaries and best-estimate time-height fields of radar moments.

  20. 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)

  1. 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)

  2. 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)

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

    SciTech Connect (OSTI)

    Joseph Hardin; Dan Nelson; Iosif Lindenmaier; Bradley Isom; Karen Johnson; Alyssa Matthews; 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)

  4. 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)

  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)]

    Joseph Hardin; Dan Nelson; Iosif (Andrei) Lindenmaier; Bradley Isom; Karen Johnson; Alyssa Matthews; 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)

  6. ARM - Facility News Article

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

    refers to the specific radio frequency range of this radar, which is a 95 gigahertz pulse Doppler zenith pointing radar, providing profiles of cloud reflectivity and particle...

  7. ARM - Field Campaign - Radar Wind Profiler for Cloud Forecasting at BNL

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

    govCampaignsRadar Wind Profiler for Cloud Forecasting at BNL Campaign Links Field Campaign Report 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 : Radar Wind Profiler for Cloud Forecasting at BNL 2013.07.15 - 2015.08.06 Lead Scientist : Michael Jensen For data sets, see below. Abstract In support of recent activities funded by the DOE Energy Efficiency and Renewable Energy (EERE) to produce short-term

  8. ARM - Field Campaign - 2001 Multi-Frequency Radar IOP

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

    Campaign : 2001 Multi-Frequency Radar IOP 2001.03.01 - 2001.09.30 Lead Scientist : Stephen Sekelsky Data Availability http:abyss.ecs.umass.edu For data sets, see below....

  9. Forthcoming Upgrades to the ARM MMCRs: Improved Radar Processor...

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

    ... laboratory test of the new processor, operating the current modes used on the SGP radar. ... In the upgrade the hardware is altered with the addition of an ortho- mode transducer ...

  10. DOE/SC-ARM-12-010 Science Goals for the ARM Recovery Act Radars

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

    for a total of three at a single site (35 GHz, 94 GHz, and a precipitation radar) and a Doppler lidar. Evolving to a multi-frequency scanning radar is a medium-term goal to...

  11. X-band Scanning ARM Precipitation Radar (X-SAPR) Instrument Handbook

    SciTech Connect (OSTI)

    Widener, K; Bharadwaj, N

    2012-10-29

    The X-band scanning ARM cloud radar (X-SAPR) is a full-hemispherical scanning polarimetric Doppler radar transmitting simultaneously in both H and V polarizations. With a 200 kW magnetron transmitter, this puts 100 kW of transmitted power for each polarization. The receiver for the X-SAPR is a Vaisala Sigmet RVP-900 operating in a coherent-on-receive mode. Three X-SAPRs are deployed around the Southern Great Plains (SGP) Central Facility in a triangular array. A fourth X-SAPR is deployed near Barrow, Alaska on top of the Barrow Arctic Research Center.

  12. C-Band Scanning ARM Precipitation Radar (C-SAPR) Handbook

    SciTech Connect (OSTI)

    Widener, K; Bharadwaj, N

    2012-11-13

    The C-band scanning ARM precipitation radar (C-SAPR) is a scanning polarimetric Doppler radar transmitting simultaneously in both H and V polarizations. With a 350-kW magnetron transmitter, this puts 125 kW of transmitted power for each polarization. The receiver for the C-SAPR is a National Center for Atmospheric Research (NCAR) -developed Hi-Q system operating in a coherent-on-receive mode. The ARM Climate Research Facility operates two C-SAPRs; one of them is deployed near the Southern Great Plains (SGP) Central Facility near the triangular array of X-SAPRs, and the second C-SAPR is deployed at ARM’s Tropical Western Pacific (TWP) site on Manus Island in Papua New Guinea.

  13. 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.

  14. 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.

  15. ARM - Site Instruments

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

    Zenith Radar Cloud Properties Browse Data Installed at 2 facilities LDIS Laser Disdrometer Surface Meteorology Browse Data Installed at 2 facilities MPL Micropulse Lidar ...

  16. ARM - Facility News Article

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

    ARM's New Radar Operating Paradigm Aims to Maximize Performance Bookmark and Share Maintaining the pulse of the radar network is vital to research A Scanning ARM Cloud Radar is deployed with the ARM Mobile Facility on Antarctica for the ARM West Antarctic Radiation Experiment campaign. A Scanning ARM Cloud Radar is deployed with the ARM Mobile Facility on Antarctica for the ARM West Antarctic Radiation Experiment campaign. Radars have been getting a lot of attention at ARM in the last few

  17. 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.

  18. ARM - Data Announcements Article

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

    New Release of Radar CFAD Data Product for ARM Radar Simulator Bookmark and Share Measured radar reflectivity (top) and the calculated radar CFAD (bottom) are displayed for May 16, 2009. Measured radar reflectivity (top) and the calculated radar CFAD (bottom) are displayed for May 16, 2009. An ARM cloud radar simulator was developed to facilitate direct comparison of climate model output with the ARM ground-based cloud radar measurements by considering limitations and features of the observing

  19. ARM - Events Article

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

    37th Conference on Radar Meteorology Bookmark and Share Scott Collis, top, and Pavlos Kollias, bottom, are ARM radar scientists presenting at the radar conference. Scott Collis, top, and Pavlos Kollias, bottom, are ARM radar scientists presenting at the radar conference. Interested in learning more about open source radar software or cm- and mm-wavelength radar applications? Radar scientists from the Atmospheric Radiation Measurement (ARM) Climate Research Facility will be leading workshops on

  20. ARM - Instrument - kazr

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

    extent and composition of clouds at millimeter wavelengths. The KAZR is a zenith-pointing Doppler radar that operates at a frequency of approximately 35 GHz. The main purpose of...

  1. ARM - Instrument - mwacr

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

    The following measurements are those considered scientifically relevant. Radar Doppler Radar reflectivity Locations ARM Mobile Facility ACX M1 Browse Data Off the Coast...

  2. ARM - Instrument - rwp

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

    us at 1-888-ARM-DATA. Send Instrument : Radar Wind Profiler (RWP) Instrument Categories Atmospheric Profiling General Overview The radar wind profilerradio acoustic sounding ...

  3. ARM - Journal Articles 2013

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

    ... satellite data (Citation) Remote Sensing ARM Painemal The ... mesoscale convective systems: radar observations and ... Atmospheric and Oceanic Technology Yes ARM Shen ...

  4. ARM - Facility News Article

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

    scanning ARM precipitation radars at the SGP site and was performed using tools in the Python-ARM radar toolkit. Click on image to enlarge. This data plot shows the height and...

  5. ARM - Field Campaign - Marine ARM GPCI Investigations of Clouds (MAGIC):

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

    Cloud Properties from Zenith Radiance Data Cloud Properties from Zenith Radiance Data Campaign Links Final Campaign Summary ARM Data Discovery 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 1-888-ARM-DATA. Send Campaign : Marine ARM GPCI Investigations of Clouds (MAGIC): Cloud Properties from Zenith Radiance Data 2012.10.01 - 2013.09.30 Lead Scientist : J.-Y.

  6. Zenith Solar Ltd | Open Energy Information

    Open Energy Info (EERE)

    Zenith Solar Ltd Place: Qiryat Gat, Israel Zip: 82000 Product: Israel-based developers of a HCPV - highly concentrator PV system for residential and industrial use. References:...

  7. Zenith Materials Technology Corp | Open Energy Information

    Open Energy Info (EERE)

    Materials Technology Corp Jump to: navigation, search Name: Zenith Materials Technology Corp. Place: Hsinchu, Taiwan Sector: Solar Product: Taiwan-based manufacturer of solar ingot...

  8. Millimeter Wave Cloud Radar (MMCR) Handbook

    SciTech Connect (OSTI)

    KB Widener; K Johnson

    2005-01-30

    The millimeter cloud radar (MMCR) systems probe the extent and composition of clouds at millimeter wavelengths. The MMCR is a zenith-pointing radar that operates at a frequency of 35 GHz. The main purpose of this radar is to determine cloud boundaries (e.g., cloud bottoms and tops). This radar will also report radar reflectivity (dBZ) of the atmosphere up to 20 km. The radar possesses a doppler capability that will allow the measurement of cloud constituent vertical velocities.

  9. 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

  10. Zenith Energy Services P Ltd ZESL | Open Energy Information

    Open Energy Info (EERE)

    Biomass, Services Product: Zenith provides services to project developers, such as feasibility studies, DPR, biomass assessment studies and financial services. References: Zenith...

  11. Long-term Observations of the Convective Boundary Layer Using Insect Radar Returns at the SGP ARM Climate Research Facility

    SciTech Connect (OSTI)

    Chandra, A S; Kollias, P; Giangrande, S E; Klein, S A

    2009-08-20

    A long-term study of the turbulent structure of the convective boundary layer (CBL) at the U.S. Department of Energy Atmospheric Radiation Measurement Program (ARM) Southern Great Plains (SGP) Climate Research Facility is presented. Doppler velocity measurements from insects occupying the lowest 2 km of the boundary layer during summer months are used to map the vertical velocity component in the CBL. The observations cover four summer periods (2004-08) and are classified into cloudy and clear boundary layer conditions. Profiles of vertical velocity variance, skewness, and mass flux are estimated to study the daytime evolution of the convective boundary layer during these conditions. A conditional sampling method is applied to the original Doppler velocity dataset to extract coherent vertical velocity structures and to examine plume dimension and contribution to the turbulent transport. Overall, the derived turbulent statistics are consistent with previous aircraft and lidar observations. The observations provide unique insight into the daytime evolution of the convective boundary layer and the role of increased cloudiness in the turbulent budget of the subcloud layer. Coherent structures (plumes-thermals) are found to be responsible for more than 80% of the total turbulent transport resolved by the cloud radar system. The extended dataset is suitable for evaluating boundary layer parameterizations and testing large-eddy simulations (LESs) for a variety of surface and cloud conditions.

  12. ARM - Blog Article

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

    October 26, 2015 [Blog, Field Notes, SGP] ARM Radar Technician Training Course at the ARM SGP Site Bookmark and Share Editor's note: Joseph Hardin, a radar engineer at the ARM Climate Research Facility, sent this update Training attendees Chris Martin and Matt Gibson working to measure a signal on the top of an X-SAPR radar. Training attendees Chris Martin and Matt Gibson working to measure a signal on the top of an X-SAPR radar. The ARM Climate Research Facility currently operates 33 radars

  13. ARM - Instrument -

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

    radar line up at the SGP site Instrument collections* at three fixed sites around the globe, two mobile facilities, and an aerial facility are operated by the ARM Climate...

  14. ARM: Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) operating in low-low precipitation mode

    SciTech Connect (OSTI)

    Timothy Martin; Paytsar Muradyan; Richard Coulter

    2014-01-28

    Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) operating in low-low precipitation mode

  15. 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

  16. ARM - Instrument - xsapr

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

    The X-band scanning ARM precipitation radar (X-SAPR) is an X-band dual-polarization Doppler weather radar manufactured by Radtec, Inc. The X-SAPR operates in a simultaneous...

  17. ARM - Facility News Article

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

    Data from the radar are transmitted through a wireless connection to the ARM site data system. With the radar up and running, signal returns on June 24 provided an indication of...

  18. ARM - Facility News Article

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

    October 21, 2014 [Facility News] ARM Scientists Lead Radar Courses at ERAD2014 Bookmark and Share In September, radar engineers and science colleagues gathered in Garmisch-Partenkirchen, Germany, for the 8th European Conference on Radar in Meteorology and Hydrology. Leading ARM radar experts and data users shared their advances during two short-course workshops. A third short course was coordinated by Atmospheric System Research (ASR) colleagues on "Applications of Dual-Polarization Weather

  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 - Site Instruments

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

    Data Single installation SWACR W-Band (95 GHz) ARM Cloud Radar, mounted to scan Cloud Properties Browse Data Single installation TSI Total Sky Imager Cloud Properties...

  1. 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...

  2. ARM - Datastreams - 50rwptempmom

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

    rwptempmom Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We ... Radar Doppler Spectral width ms; 100*%, see comment specw ( time, height ) Acoustic ...

  3. ARM - Data Announcements Article

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

    classifier. These data are from the ARM C-SAPR at the Southern Great Plains site. The Python ARM Radar Toolkit (Py-ART) development team has released version 1.5.0. as an open...

  4. ARM: Shortwave Array Spectroradiometer-Zenith, Radiance and Transmitta...

    Office of Scientific and Technical Information (OSTI)

    Sponsoring Org: USDOE Office of Science (SC), Biological and Environmental Research (BER) ... Subject: 54 Environmental Sciences Shortwave spectral direct normal irradiance; Shortwave ...

  5. ARM - Measurement - Radar reflectivity

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

    upon the size, shape, aspect, and dielectric properties of that target. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the...

  6. ARM Scanning Radar

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

    (fixed elevation) 3. Sector scan (for cloud tracking) 4. Staring mode 3D-Cloud Products Case Study - Marine Stratocumulus 75 o Horizontal Wind Height In-cloud horizontal wind and...

  7. Shortwave Array Spectroradiometer-Zenith Instrument Handbook

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

    8 Shortwave Array Spectroradiometer-Zenith Instrument Handbook April 2016 CJ Flynn 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 not infringe

  8. 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. ...

  9. ARM - Blog Article

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

    Radar Calibration, Grooming, and Alignment at the ARM Oliktok Point Site Bookmark and Share Editor's note: Joseph Hardin, a radar engineer at the ARM Climate Research Facility, sent this update. Hans Verlinde, Pennsylvania State University, overlooks the instrumentation at Oliktok Point, Alaska. Hans Verlinde, Pennsylvania State University, overlooks the instrumentation at Oliktok Point, Alaska. Before a radar site is "turned on" to the public, there are many steps required to make

  10. 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...

  11. Stratiform and Convective Precipitation Observed by Multiple Radars during the DYNAMO/AMIE Experiment

    SciTech Connect (OSTI)

    Deng, Min; Kollias, Pavlos; Feng, Zhe; Zhang, Chidong; Long, Charles N.; Kalesse, Heike; Chandra, Arunchandra; Kumar, Vickal; Protat, Alain

    2014-11-01

    The motivation for this research is to develop a precipitation classification and rain rate estimation method using cloud radar-only measurements for Atmospheric Radiation Measurement (ARM) long-term cloud observation analysis, which are crucial and unique for studying cloud lifecycle and precipitation features under different weather and climate regimes. Based on simultaneous and collocated observations of the Ka-band ARM zenith radar (KAZR), two precipitation radars (NCAR S-PolKa and Texas A&M University SMART-R), and surface precipitation during the DYNAMO/AMIE field campaign, a new cloud radar-only based precipitation classification and rain rate estimation method has been developed and evaluated. The resulting precipitation classification is equivalent to those collocated SMART-R and S-PolKa observations. Both cloud and precipitation radars detected about 5% precipitation occurrence during this period. The convective (stratiform) precipitation fraction is about 18% (82%). The 2-day collocated disdrometer observations show an increased number concentration of large raindrops in convective rain compared to dominant concentration of small raindrops in stratiform rain. The composite distributions of KAZR reflectivity and Doppler velocity also show two distinct structures for convective and stratiform rain. These indicate that the method produces physically consistent results for two types of rain. The cloud radar-only rainfall estimation is developed based on the gradient of accumulative radar reflectivity below 1 km, near-surface Ze, and collocated surface rainfall (R) measurement. The parameterization is compared with the Z-R exponential relation. The relative difference between estimated and surface measured rainfall rate shows that the two-parameter relation can improve rainfall estimation.

  12. 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

  13. 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

  14. 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

  15. 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

  16. ARM - 2001 ARM Science Team Meeting

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

    and MWR 2:30 p.m. Kollias P, BA Albrecht, and BJ Dow: Sizes Fractional Coverage, and Radar Doppler Moments Profiles of Fair - Weather Cumulus Clouds at the TWP ARM Site 2:45 p.m. ...

  17. ARM - 1998 ARM Science Team Meeting

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

    and MWR 2:30 p.m. Kollias P, BA Albrecht, and BJ Dow: Sizes Fractional Coverage, and Radar Doppler Moments Profiles of Fair - Weather Cumulus Clouds at the TWP ARM Site 2:45 p.m. ...

  18. MAGIC Cloud Properties from Zenith Radiance Data Final Campaign...

    Office of Scientific and Technical Information (OSTI)

    Title: MAGIC Cloud Properties from Zenith Radiance Data Final Campaign Summary Cloud droplet size and optical depth are the most fundamental properties for understanding cloud ...

  19. 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

  20. ARM - Events Article

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

    February 11, 2015 [Events, Facility News] First ARM Summer Training to be Held in Oklahoma Bookmark and Share Radar row at the Southern Great Plains Central Facility is a series of radars and lidars used to measure a variety of atmospheric properties. Radar row at the Southern Great Plains Central Facility is a series of radars and lidars used to measure a variety of atmospheric properties. In an effort to promote the training of the next generation of atmospheric scientists, the first ever ARM

  1. 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

  2. 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.

  3. ARM - Datastreams - mwacraux

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

    Datastreamsmwacraux Documentation Data Quality Plots Citation DOI: 10.5439/1150243 [ 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 : MWACRAUX Auxiliary data for the Marine W-band (95 GHz) ARM Cloud Radar Active Dates 2012.11.01 - 2016.01.26 Originating Instrument Marine W-Band (95 GHz) ARM Cloud Radar (MWACR) Measurements Only measurements considered scientifically

  4. ARM - Datastreams - wacr

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

    Datastreamswacr Documentation Data Quality Plots Citation DOI: 10.5439/1025317 [ 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 wacr Archive Data Plot Example wacr Archive Data Plot Datastream : WACR W-band (95 GHz) ARM Cloud Radar Active Dates 2005.06.22 - 2015.12.02 Measurement Categories Cloud Properties Originating Instrument W-Band (95 GHz) ARM Cloud Radar (WACR)

  5. ARM - VAP Product - rwptemp

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

    1-888-ARM-DATA. Send VAP Output : RWPTEMP Radar Wind Profilers (RWP), 50 and 915 MHZ: virtual temperature profiles Active Dates 1995.12.15 - 2006.05.14 Originating VAP Process...

  6. ARM - Datastreams - 50rwptemp

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

    1-888-ARM-DATA. Send Datastream : 50RWPTEMP 50-MHz Radar Wind ProfilerRASS (RWP50): virtual temperature profile data Active Dates 1997.05.19 - 2001.03.31 Measurement Categories...

  7. ARM - Campaign Instrument - npol

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

    govInstrumentsnpol Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : NASA N-POL Polarimetric Radar System...

  8. ARM - Facility News Article

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

    Arctic Ocean campaign, and was responsible for the operation of ARM radars both in the United States and at international sites ranging from Africa to China to Papua New Guinea. ...

  9. ARM - Facility News Article

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

    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...

  10. ARM - Facility News Article

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

    On November 28, 2007, ARM operations and engineering staff braved -15F weather to install the new radar antenna at Barrow. After lifting the antenna via crane onto the roof of ...

  11. ARM - Datastreams - 1290rwpprecipcon

    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 Datastream : 1290RWPPRECIPCON 1290-MHz Radar Wind Profiler, precipitation consensus data Active Dates 2014.03.05 - ...

  12. ARM - Datastreams - 1290rwpprecipspec

    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 Datastream : 1290RWPPRECIPSPEC 1290-MHz Radar Wind Profiler, precipitation spectra data Active Dates 2014.03.05 - 2015.12.01 ...

  13. ARM - Datastreams - 915rwpprecipmom

    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 Datastream : 915RWPPRECIPMOM 915-MHz Radar Wind Profiler, precipitation moments data Active Dates 1998.11.18 - 2016.06.02 ...

  14. ARM - Datastreams - 915rwpprecipspec

    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 Datastream : 915RWPPRECIPSPEC 915-MHz Radar Wind Profiler, precipitation spectra data Active Dates 1998.11.18 - 2016.06.02 ...

  15. ARM - Datastreams - 915rwpprecipcon

    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 Datastream : 915RWPPRECIPCON 915-MHz Radar Wind Profiler, precipitation consensus data Active Dates 1998.10.05 - 2016.06.02 ...

  16. ARM - Datastreams - 1290rwpprecipmom

    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 Datastream : 1290RWPPRECIPMOM 1290-MHz Radar Wind Profiler, precipitation moments data Active Dates 2014.03.05 - 2015.12.01 ...

  17. ARM - Datastreams - 915rwpwindmom

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

    We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : 915RWPWINDMOM 915-MHz Radar Wind ProfilerRASS (RWP915): wind moments Active ...

  18. ARM - Datastreams - 1290rwpwindcon

    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 Datastream : 1290RWPWINDCON 1290-MHz Radar Wind ProfilerRASS (RWP1290): wind consensus data Active Dates 2007.03.19 - ...

  19. ARM - Campaign Instrument - rwp

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

    We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Radar Wind Profiler (RWP) Instrument Categories Atmospheric Profiling ...

  20. ARM News » Facility News

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

    6:30:04 +0000 http://www.arm.gov en ARM&acirc;&euro;&trade;s New Radar Operating Paradigm Aims to Maximize Performance Mon, 15 Aug 2016 06:30:04 +0000 Facility News http://www.arm.gov/news/facility/post/38351 <img src="http://www.arm.gov/images/cms/radar1.jpg:100w" style="float:left;margin-right:5px;margin-bottom:5px"/><p>Maintaining the pulse of the radar network is vital to research Radars have been getting a lot of attention at ARM in the last few

  1. ARM - Datastreams - mmcrpow

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

    Datastreamsmmcrpow Documentation Data Quality Plots Citation DOI: 10.5439/1025233 [ 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 : MMCRPOW Millimeter Wavelength Cloud Radar (MMCR): transmitted RF power Active Dates 1996.11.07 - 2006.08.12 Originating Instrument Millimeter Wavelength Cloud Radar (MMCR) Measurements The measurements below provided by this product are

  2. ARM - Datastreams - mmcrspeccmaskcopol

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

    Datastreamsmmcrspeccmaskcopol Documentation Data Quality Plots Citation DOI: 10.5439/1025236 [ 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 : MMCRSPECCMASKCOPOL Millimeter Wave Cloud Radar (MMCR), filtered spectral data, co-polarized mode Active Dates 2008.04.21 - 2010.08.02 Originating Instrument Millimeter Wavelength Cloud Radar (MMCR) Measurements The measurements

  3. ARM - Datastreams - mmcrspeccmaskpr

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

    Datastreamsmmcrspeccmaskpr Documentation Data Quality Plots Citation DOI: 10.5439/1025238 [ 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 : MMCRSPECCMASKPR Millimeter Wave Cloud Radar (MMCR), filtered spectral data, precipitation mode Active Dates 2008.04.21 - 2011.02.27 Originating Instrument Millimeter Wavelength Cloud Radar (MMCR) Measurements The measurements below

  4. ARM - Datastreams - mmcrspeccmaskxpol

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

    Datastreamsmmcrspeccmaskxpol Documentation Data Quality Plots Citation DOI: 10.5439/1025239 [ 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 : MMCRSPECCMASKXPOL Millimeter Wave Cloud Radar (MMCR), filtered spectral data, cross-polarized mode Active Dates 2008.04.21 - 2010.08.02 Originating Instrument Millimeter Wavelength Cloud Radar (MMCR) Measurements The measurements

  5. ARM - Datastreams - mmcrspecmom

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

    Datastreamsmmcrspecmom Documentation Data Quality Plots Citation DOI: 10.5439/1025241 [ 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 : MMCRSPECMOM Millimeter Wave Cloud Radar (MMCR), spectral data Active Dates 2003.09.09 - 2011.03.28 Originating Instrument Millimeter Wavelength Cloud Radar (MMCR) Measurements The measurements below provided by this product are those

  6. ARM - Datastreams - 1290bsrwpwindavg

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

    bsrwpwindavg Documentation Data Quality Plots Citation DOI: 10.5439/1095573 [ 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 : 1290BSRWPWINDAVG 1290-MHz Beam-Steered Radar Wind Profiler: Wind and Moment Averages Active Dates 2012.12.06 - 2016.09.02 Measurement Categories Atmospheric State Originating Instrument Radar Wind Profiler (RWP) Measurements Only measurements

  7. 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

  8. ARM - Facility News Article

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

    June 30, 2007 [Facility News] New Radar Wind Profiler Joins AMF Instrument Suite in Germany Bookmark and Share The 1290 MHz wind profiler (foreground) joins the eddy correlation system (background) for the 9-month deployment in Germany. A new 1290 MHz radar wind profiler has joined the ARM Mobile Facility instrument suite for the Convective and Orographic Precipitation Study (COPS) in Germany. This system operates similarly to a Doppler radar and provides measurements of backscattered

  9. ARM - Datastreams - xsaprhsrhi

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

    Radar Doppler dopplerspectralwidth Radar polarization dpphaseshift Radar Doppler meandopplervelocity Radar reflectivity reflectivity Radar reflectivity reflectivitycorr...

  10. ARM - Datastreams - xsaprvad

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

    Radar Doppler dopplerspectralwidth Radar polarization dpphaseshift Radar Doppler meandopplervelocity Radar reflectivity reflectivity Radar reflectivity reflectivitycorr...

  11. ARM - Datastreams - csaprsec

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

    Radar polarization diffreflectivity Radar polarization diffreflectivityunf Radar Doppler dopplerspectralwidth Radar Doppler dopplerspectralwidthunf Radar...

  12. ARM - Datastreams - csaprrhi

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

    Radar polarization diffreflectivity Radar polarization diffreflectivityunf Radar Doppler dopplerspectralwidth Radar Doppler dopplerspectralwidthunf Radar...

  13. ARM - Datastreams - wacrreflmask

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

    Datastreamswacrreflmask Documentation Data Quality Plots Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : WACRREFLMASK W-band (95 GHz) ARM Cloud Radar: ???????? Active Dates 2006.03.24 - 2008.04.29 Originating Instrument W-Band (95 GHz) ARM Cloud Radar (WACR) Measurements The measurements below provided by this product are those considered scientifically relevant. Measurement Variable Locations Southern Great Plains SGP C1 Browse Data

  14. 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)

  15. 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 -...

  16. 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...

  17. 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...

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

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

  19. Final Scientific/Technical Report Grant title: Use of ARM Measurements...

    Office of Scientific and Technical Information (OSTI)

    Final ScientificTechnical Report Grant title: Use of ARM Measurements of Spectral Zenith Radiance for Better Understanding of 3D Cloud-Radiation Processes and Aerosol-Cloud ...

  20. ARM - Facility News Article

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    15, 2005 [Facility News] Upgrades to Darwin Radar Double Data Delivery Bookmark and Share The new processor for the MMCR at Darwin collects spectral data in four different modes, resulting in approximately 3.4 gigabytes of signal output per day. Virtually all cloud studies within the ARM Program involve the Millimeter Wavelength Cloud Radar (MMCR). This instrument is the only source for obtaining detailed information about cloud location and internal structure in the atmospheric columns above

  1. 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,

  2. ARM - Data Announcements Article

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    27, 2014 [Data Announcements] MICROARSCL Evaluation Data Released: Harnessing the Power of Radar Doppler Spectra Bookmark and Share Four of the roughly thirty variables provided by MICROARSCL are shown here for a day in Barrow, Alaska. Four of the roughly thirty variables provided by MICROARSCL are shown here for a day in Barrow, Alaska. Since 2004, the ARM Climate Research Facility has collected continuous recordings of profiling radar Doppler spectra. These recorded spectra offer a powerful

  3. ARM - Niamey News

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

    West AfricaNiamey News Niamey Deployment AMF Home Niamey Home Data Plots and Baseline Instruments Rainfall Record (PDF) Publications List, (PDF) Experiment Planning RADAGAST Proposal Outreach Fact Sheets RADAGAST (PDF) Annual Climate Cycle in Niger, Africa (PDF) Posters AMF Poster, French Version We're Going to Sample the Sky in Africa! News Campaign Images AMMA International News Niamey News Radar Wind Profiler Joins ARM Mobile Facility Instrument Suite May 15, 2006 W-Band Cloud Radar Added to

  4. ARM - Data Announcements Article

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

    August 29, 2013 [Data Announcements] New Data Available for Precipitation Value-Added Product Bookmark and Share A spatial plot of rainfall intensity (mm/h) centered on the Manus (TWP-C1) central facility as retrieved from the C-band scanning ARM precipitation radar using a rainfall-reflectivity relationship. A spatial plot of rainfall intensity (mm/h) centered on the Manus (TWP-C1) central facility as retrieved from the C-band scanning ARM precipitation radar using a rainfall-reflectivity

  5. ARM - Datastreams - 1290bsrwpspeclolowprecip

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    bsrwpspeclolowprecip Documentation Data Quality Plots Citation DOI: 10.5439/1256317 DOI: 10.5439/1274210 [ 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 : 1290BSRWPSPECLOLOWPRECIP Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) operating in low-low precipitation mode Active Dates 2013.05.18 - 2015.11.25 Originating Instrument Radar Wind Profiler (RWP)

  6. ARM - Datastreams - 1290bsrwpspeclolowwind

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

    bsrwpspeclolowwind Documentation Data Quality Plots Citation DOI: 10.5439/1256318 DOI: 10.5439/1274213 [ 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 : 1290BSRWPSPECLOLOWWIND Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) operating in low-low wind mode Active Dates 2013.05.18 - 2015.02.12 Originating Instrument Radar Wind Profiler (RWP) Measurements

  7. ARM - Datastreams - 1290bsrwpspeclowprecip

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

    bsrwpspeclowprecip Documentation Data Quality Plots Citation DOI: 10.5439/1256319 DOI: 10.5439/1274212 [ 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 : 1290BSRWPSPECLOWPRECIP Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) operating in low precipitation mode Active Dates 2013.05.18 - 2015.02.12 Originating Instrument Radar Wind Profiler (RWP)

  8. ARM - Datastreams - 1290bsrwpspeclowwind

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

    bsrwpspeclowwind Documentation Data Quality Plots Citation DOI: 10.5439/1256320 DOI: 10.5439/1274214 [ 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 : 1290BSRWPSPECLOWWIND Spectra from 1290-MHz Beam-Steered Radar Wind Profiler (BSRWP) operating in low wind mode Active Dates 2013.05.18 - 2015.02.12 Originating Instrument Radar Wind Profiler (RWP) Measurements Only

  9. ARM - Datastreams - 915rwptempspec

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

    rwptempspec Documentation Data Quality Plots Citation DOI: 10.5439/1025133 [ 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 : 915RWPTEMPSPEC 915-MHz Radar Wind Profiler/RASS (RWP915): temperature spectra Active Dates 1998.11.09 - 2011.06.13 Originating Instrument Radar Wind Profiler (RWP) Measurements Only measurements considered scientifically relevant are shown below

  10. ARM - Datastreams - 915rwpwindspec

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

    rwpwindspec Documentation Data Quality Plots Citation DOI: 10.5439/1025137 [ 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 : 915RWPWINDSPEC 915-MHz Radar Wind Profiler/RASS (RWP915): wind spectra Active Dates 1998.11.09 - 2016.09.02 Originating Instrument Radar Wind Profiler (RWP) Measurements Only measurements considered scientifically relevant are shown below by

  11. Title: Radar-observed convective characteristics during TWP-ICE

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

    will describe the convective systems observed during the project by two scanning C-band Doppler radars, one of which will provide dual-polarization measurements, and ARM's...

  12. 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.

  13. ARM - Datastreams - 915rwphiwindmom

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

    rwphiwindmom Documentation Data Quality Plots Citation DOI: 10.5439/1025124 [ 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 : 915RWPHIWINDMOM 915-MHz Radar Wind Profiler/RASS (RWP915): high power, wind moments data Active Dates 1997.05

  14. ARM - Datastreams - 915rwplowindmom

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

    rwplowindmom Documentation Data Quality Plots Citation DOI: 10.5439/1025126 [ 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 : 915RWPLOWINDMOM 915-MHz Radar Wind Profiler/RASS (RWP915): low power, wind moments data Active Dates 1997.04

  15. ARM - VAP Process - abrfc

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

    Productsabrfc Documentation & Plots abrfc : 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 : Arkansas-Red Basin River Forecast Center (ABRFC) Instrument Categories Surface Meteorology General Overview Every hour a gridded (4 km x 4 km) precipitation field is created. This field is a combination of both WSR-88D Nexrad radar precipitation

  16. Search for: All records | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    Widener, Kevin (3) Lindenmaier, Iosif Andrei (1) Nelson, Dan (1) Save Results Excel ... ARM: X-Band Scanning ARM Cloud Radar (XSACR) Zenith Pointing PPI Widener, Kevin ; Nelson, ...

  17. Search for: All records | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    Johnson, Karen (3) Lindenmaier, Iosif Andrei (3) Nelson, Dan (3) Save Results Excel ... ARM: X-Band Scanning ARM Cloud Radar (XSACR) Zenith Pointing PPI Widener, Kevin ; Nelson, ...

  18. ARM - Publications: Science Team Meeting Documents

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

    Processing of ARM Millimeter Wave Cloud Radar Signals at Low Signal to Noise Conditions Kollias, P. and Albrecht B.A., University of Miami Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting The Atmospheric Radiation Measurement (ARM) program has supported the deployment of several Millimeter Wave Cloud Radars (MMCRs) operating at 35-GHz for an accurate detection of all the hydrometeors in the atmosphere. Despite their short wavelength that increases the Rayleigh backscattering

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

    Office of Scientific and Technical Information (OSTI)

    S-band Radar (williams-sband) Title: ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, S-band Radar (williams-sband) This data was ...

  20. ARM - Datastreams - 50rwpwind

    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 Datastream : 50RWPWIND 50-MHz Radar Wind ProfilerRASS (RWP50): wind profile data Active Dates 1997.05.19 - 2001.03.31 ...

  1. ARM - Datastreams - 915rwpwind

    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 Datastream : 915RWPWIND 915-MHz Radar Wind ProfilerRASS (RWP915): wind profile data Active Dates 1996.12.30 - 2001.03.31 ...

  2. Zenith/Nadir Pointing mm-Wave Radars: Linear or Circular Polarization...

    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 ...

  3. INTRODUCTION TO DOPPLER RADAR Pavlos Kollias McGill University

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

    DOPPLER RADAR Pavlos Kollias McGill University radarscience.weebly.com 15 March 2016 ARM Summer Training and Science Applications GRANT CHALLENGES OF RADARS 15 March 2016 ARM Summer Training and Science Applications Cloud Radars The use of letters for radar frequency bands and decibels The decibel (dB) is a logarithmic unit that expresses the ratio of two values of a physical quantity, often power or intensity. 3 dB is a factor of 2 !! 15 March 2016 ARM Summer Training and Science Applications

  4. Narrow Field of View Zenith Radiometer (NFOV) Handbook (Technical...

    Office of Scientific and Technical Information (OSTI)

    With a one-second sampling rate of the NFOV2, faster than almost any other ARM Climate Research Facility (ACRF) instrument, we are able, for the first time, to capture changes in ...

  5. 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...

  6. ARM - ARM Safety Policy

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    Organization Participants Facility Statistics Forms Contacts Facility Documents ARM ... will be taken to minimize dangers from all hazards to life, property, and the environment. ...

  7. ARM - About ARM

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

    Organization Participants Facility Statistics Forms Contacts Facility Documents ARM ... to advance scientific knowledge in a wide range of interdisciplinary Earth sciences. ...

  8. ARM - Publications: Science Team Meeting Documents

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

    Variability of Low Stratus Over the ARM SGP CART Based on Cloud Radar Data and LES Simulations Kogan, Z.N., Mechem, D.B., and Kogan, Y.L., Cooperative Institute for Mesoscale...

  9. ARM - Publications: Science Team Meeting Documents

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

    A Comparison of the Characteristics of Cirrus from Doppler Radar Measurements at the ARM Sites and the CRYSTAL Field Experiment Laribee-Dowd, K. (a), Mace, G. G. (a), and Marchand,...

  10. 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)...

  11. 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 ...

  12. ARM - Publications: Science Team Meeting Documents

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

    K.-M.(c), BMRC (a), NOAACIRES CDC (b), NASA Langley (c) Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting It is highly desirable to use cloud radar data in...

  13. ARM - Publications: Science Team Meeting Documents

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

    Wavelet-Based Characterization of Long-Range Correlations in 2D Liquid Water Content Fields from ARM's Cloud Radars Davis, A.B., Los Alamos National Laboratory, Astrophysics & Radiation Measurements Group; Roux, S.G., Marshak, A., Wiscombe, W.J., and Pincus, R., NASA Goddard Space Flight Center, Climate & Radiation Branch Eighth Atmospheric Radiation Measurement (ARM) Science Team Meeting We report on wavelet-based methods under development to process the cloud-radar datastreams into

  14. ARM - Publications: Science Team Meeting Documents

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

    Cloud Radiative Forcing of the Arctic Surface: The Influence of Cloud Properties, Surface Albedo, and Solar Zenith Angle Shupe, M.D. and Intrieri, J.M., NOAA - Environmental Technology Laboratory Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting An annual cycle of cloud and radiation measurements made as part of the Surface Heat Budget of the Arctic program are utilized to determine which properties of Arctic clouds control the surface radiation balance. Surface cloud

  15. ARM - Publications: Science Team Meeting Documents

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

    A Compact Millimeter-Wave Radar for UAV Applications Bambha, R., Carswell, J., and Swift, C., University of Massachusetts Ninth Atmospheric Radiation Measurement (ARM) Science Team Meeting Assembly of the Compact Millimeter-wave Radar (CMR) has been completed at the University of Massachusetts, and ground-based cloud measurements have been acquired. The CMR is a 95-GHz solid-state radar intended for airborne cloud measurements. Funding for the project was provided by the Atmospheric Radiation

  16. ARM - Publications: Science Team Meeting Documents

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

    Radar Observations of Large-Eddy Circulations and Turbulence in Boundary Layer Clouds Albrecht, B.A. and Kollias, P., Umiversity of Miami Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting With the development and application of Doppler short wavelength radars, there has been an increased capability for explicitly resolving the vertical structure of boundary layer cloud circulations. Further, Doppler mm-wavelength radars used in a vertically pointing mode can provide

  17. ARM - Facility News Article

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

    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

  18. ARM - Facility News Article

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

    Working Together to Develop New Radar Products Bookmark and Share A joint ARM and ASR workshop turned basic instrument output into more valuable data Participants benefitted from working together in the same room, with developers and scientists able to ask each other questions. From left to right: Eugene Clothiaux, PSU; Meng Wang, BNL; Karen Johnson, BNL; Mariko Oue, SBU; Tami Toto, BNL; and Yaosheng Chen, PSU. Not pictured: Pavlos Kollias, SBU; Katia Lamer, PSU; Ed Luke, BNL. Participants

  19. 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

  20. ARM - ARM Science Board

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

    Board Members An eleven-member Facility Board has been selected to serve as an independent review body for the ARM Facility and ensure it is used to conduct the highest quality ...

  1. ARM - About ARM

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

    The second ARM site, in the Tropical Western Pacific, is next to the Pacific "warm pool" - off the coast of Papua New Guinea, just north of Australia. First established in 1996, ...

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

    Office of Scientific and Technical Information (OSTI)

    Auxiliary data for the Marine W-band (95 GHz) ARM Cloud Radar Authors: Joseph Hardin ; Bradley Isom ; Alyssa Matthews ; Karen Johnson ; Nitin Bharadwaj Publication Date: 2012-11-01 ...

  3. ARM - Collaborations

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

    Related Information Collaborations Meetings of Interest Data Sources ARM Data Discovery Browser NSA Data Past ARM NSA campaigns NCARUCAR National Oceanic and Atmospheric ...

  4. ARM 2000

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

    Tom Ackerman Chief Scientist Tom Ackerman Chief Scientist ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement 2 Outline Outline * Last year's goals * ...

  5. ARM - Publications: Science Team Meeting Documents

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

    Initial Measurements from the Compact Millimeter-Wave Radar Roman-Nieves, J.(a), Sekelsky, S.M.(a), Tooman, T.T.(b), and Bolton, W.B.(b), University of Massachusetts at Amherst (a), Sandia National Laboratories (b) Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting The University of Massachusetts at Amherst has developed a solid state compact 95 GHz millimeter-wave radar (CMR) for the ARM Unmanned Aerospace Vehicle (UAV) program. CMR has recently flown in ARM-UAV sponsored

  6. ARM - Field Campaign - ARM Airborne Carbon Measurements (ARM...

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

    govCampaignsARM Airborne Carbon Measurements (ARM-ACME) ARM Data Discovery Browse Data Related Campaigns ARM Airborne Carbon Measurements (ARM-ACME VI) 2015.10.01, Biraud, AAF ARM...

  7. ARM - ARM Science Team Meetings

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

    govScienceARM Science Team Meetings Science Team Meetings 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 ARM Science Team Meetings Poster sessions were key components of the ARM Science Team Meetings through the years. Former ARM Chief Scientist Tom Ackerman (center, dark pants) spent many hours participating in these sessions. Poster sessions were key components of the ARM Science Team Meetings through the years. Former ARM Chief Scientist Tom Ackerman

  8. 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...

  9. Final Scientific/Technical Report Grant title: Use of ARM Measurements of Spectral Zenith Radiance for Better Understanding of 3D Cloud-Radiation Processes and Aerosol-Cloud Interaction This is a collaborative project with the NASA GSFC project of Dr. A. Marshak and W. Wiscombe (PIs). This report covers BU activities from February 2011 to June 2011 and BU "no-cost extension" activities from June 2011 to June 2012. This report summarizes results that complement a final technical report submitted by the PIs in 2011.

    SciTech Connect (OSTI)

    Knyazikhin, Y

    2012-09-10

    Main results are summarized for work in these areas: spectrally-invariant approximation within atmospheric radiative transfer; spectral invariance of single scattering albedo for water droplets and ice crystals at weakly absorbing wavelengths; seasonal changes in leaf area of Amazon forests from leaf flushing and abscission; and Cloud droplet size and liquid water path retrievals from zenith radiance measurements.

  10. ARM - PI Product - Kinematic and Hydrometer Data Products from Scanning

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

    Radars during MC3E ProductsKinematic and Hydrometer Data Products from Scanning Radars during MC3E Citation DOI: 10.5439/1241493 [ What is this? ] 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 PI Product : Kinematic and Hydrometer Data Products from Scanning Radars during MC3E [ research data - ASR funded ] Recently the Radar Meteorology Group at Colorado State University has completed major case studies of

  11. Narrow Field of View Zenith Radiometer (NFOV) Handbook

    SciTech Connect (OSTI)

    Chiu, C; Marshak, A; Hodges, G; Barnard, JC; Schmelzer, J

    2008-11-01

    The two-channel narrow field-of-view radiometer (NFOV2) is a ground-based radiometer that looks straight up and measures radiance directly above the instrument at wavelengths of 673 and 870 nm. The field-of-view of the instrument is 1.2 degrees, and the sampling time resolution is one second. Measurements of the NFOV2 have been used to retrieve optical properties for overhead clouds that range from patchy to overcast. With a one-second sampling rate of the NFOV2, faster than almost any other ARM Climate Research Facility (ACRF) instrument, we are able, for the first time, to capture changes in cloud optical properties at the natural time scale of cloud evolution.

  12. ARM Installs Aircraft Detection Radar System

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

    periods (IOPs) might use higher-power laser beams that point skyward to make ... in an aircraft flying above the instrument, damage to the person's eyesight could result. ...

  13. ARM - Data Announcements Article

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

    3, 2010 [Data Announcements] Long-Term, Large-Scale Ensemble Forcing Data Set for Darwin Available Bookmark and Share A new data set is now available for the ARM Tropical Western Pacific site in Darwin for long-term, large-scale forcing data. Produced by Dr. Christian Jakob's group at the Monash University, Australia, these data were constrained with C-POL radar retrieved rainfall through the variational analysis method (Zhang and Lin 1997) by using the European Centre for Medium-Range Weather

  14. ARM - Article

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

    Data Available from ARM Mobile Facility Deployment in China Bookmark and Share The Study of Aerosol Indirect Effects in China was anchored by the ARM Mobile Facility in Shouxian ...

  15. ARM - Article

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

    ARM Madden-Julian Oscillation (MJO) Investigation Experiment (AMIE), Manus Island. Manus Island in Papua New Guinea is the host to one of three ARM sites in the Tropical Western ...

  16. ARM - Contacts

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

    Laboratory Beat Schmid, AAF Technical Director, Pacific Northwest National Laboratory Stephen Springston, ARM Aerosol Observing System Mentor, Brookhaven National Laboratory...

  17. ARM - Article

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

    several sites with precipitation radars and energy flux measurement capabilities, and invest in new aerosol sampling and aerial instrumentation. This is just a small sample of the...

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

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

    The University of North Dakota Citation was the in situ platform, while the DOE-ARM UAV ... counter and the CSU IN counter, while the UAV had downward looking cloud radar, lidar and ...

  19. 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,...

  20. ARM - Publications: Science Team Meeting Documents: Status,Accomplish...

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

    of the PARSL (Portable Atmospheric Remote Sensing Laboratory) at one of the non-ARM locations (Oiltok Point Long Range Radar Station), and the participation of a pair of...

  1. ARM - Field Campaign - Rain Microphysics Study with Disdrometer...

    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 Campaign : Rain Microphysics Study with Disdrometer and Polarization Radar 2005.04.28 - 2005.06.30 Lead...

  2. ARM - Publications: Science Team Meeting Documents

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

    An Integrated Algorithm for Retrieving Non-precipitating Stratus Cloud Microphysical Properties Using Millimeter Radar and Microwave Radiometer Data Dong, X. and Mace, G.G., University of Utah Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting A new algorithm has been developed to retrieve the vertical profiles of cloud microphysical properties using the ground- based measurements of cloud radar, laser ceilometer, and microwave and solar radiometers. A relationship between

  3. ARM - Publications: Science Team Meeting Documents

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

    An Integrated Algorithm for Retrieving Low-Level Stratus Cloud Microphysical Properties Using Millimeter Radar and Microwave Radiometer Data Dong, X. and Mace, G.G., University of Utah Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting Two methods have been developed for inferring the vertical profiles of cloud microphysics in liquid phase stratocumulus clouds. The first method uses cloud liquid water path derived from microwave radiometer observations and a profile of radar

  4. ARM - Publications: Science Team Meeting Documents

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

    Possibilities of Rainfall-Rate Estimates from MMCR Measurements Matrosov, S.Y., CIRES, University of Colorado and NOAA ETL The vertically-pointing ARM 8 mm cloud radars are widely used for retrievals of cloud parameters. Attempts to quantitatively retrieve precipitation parameters (excluding drizzle properties) have been scarce. These retrievals are hampered by the saturation of strong radar returns, Mie scattering effects and significant attenuation of millimeter wavelength radiation in rain.

  5. ARM - PI Product - Cloudnet Project

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

    ProductsCloudnet Project 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 PI Product : Cloudnet Project Cloudnet is a research project supported by the European Commission. This project aims to use data obtained quasi-continuously for the development and implementation of cloud remote sensing synergy algorithms. The use of active instruments (lidar and radar) results in detailed vertical profiles of important cloud

  6. ARM - Publications: Science Team Meeting Documents

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

    Sizes, Fractional Coverage, and Radar Doppler Moments Profiles of Fair-Weather Cumulus Clouds at the TWP ARM Site Kollias, P., Albrecht B.A., and Dow B.J., University of Miami Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting Fair-weather cumuli are fundamental in regulating the vertical structure of water vapor and entropy in the lowest 2 km of the Earth's atmosphere over vast areas of the oceans. Using data from the mm-wavelength cloud radar, the micro-pulse lidar and

  7. ARM - Datastreams - mwrp

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

    equilibriumLevelPres ( time ) Frequency gHz frequency ( frequency ) Height meters above ground level height ( height ) Zenith-pointing infrared temperature at 10um K...

  8. ARM - Publications: Science Team Meeting Documents

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

    Measurements from the Air Force Cloud Profiling Radar (AFCPR) Mozer, J.B., and Hiett, T.C., U.S. Air Force Research Laboratory Ninth Atmospheric Radiation Measurement (ARM) Science Team Meeting We will introduce a new ka-band cloud radar that is operating at the U.S. Air Force Research Laboratory (AFRL). The specific measurements we will show involve using the radar data to model the effects of clouds on nighttime urban illumination and to validate satellite cloud retrieval algorithms

  9. 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

  10. ARM - Publications: Science Team Meeting Documents

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

    The Bulk Properties of Mid Latitude Cirrus Events: Sensitivity to Large Scale Controlling Factors Vernon, E.N. and Mace, G.G., Department of Meteorology, Unviversity of Utah Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting The extensive cirrus record recored in the ARM data is being used to investigate the sensitivity of certain cirrus properties to the large scale meteorology. Using millimeter cloud radar (MMCR) data from the Southern Great Plains site, a statistical