Cloud properties and associated radiative heating rates in the tropical western Pacific

doi:10.1029/2006JD007555

Title: Cloud properties and associated radiative heating rates in the tropical western Pacific

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Abstract

Radiative heating of the atmosphere affects cloud evolution on the cloud scale and it influences large-scale vertical motion. Obtaining good estimates of radiative heating rate profiles has been difficult due to a lack of cloud profile observations. The Atmospheric Radiation Measurement (ARM) program has been measuring cloud property distributions at sites around the globe including three in the tropical western Pacific (TWP) region. We have analyzed a month of these remote sensing observations at Manus and Nauru to calculate time series of vertical cloud property profiles and radiative heating rates. This data set will be an important tool for describing radiative processes in the tropics and assessing the simulation of these processes in dynamical models.

Authors:: Mather, Jim H.; McFarlane, Sally A.; Miller, Mark A.; Johnson, Karen L.

Publication Date:: Thu Mar 01 00:00:00 EST 2007

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 964627

Report Number(s):: PNNL-SA-43260
KP1201030

DOE Contract Number:: AC05-76RL01830

Resource Type:: Journal Article

Resource Relation:: Journal Name: Journal of Geophysical Research. D. (Atmospheres), 112 (Article number: D05201)

Country of Publication:: United States

Language:: English

Citation Formats


                    Mather, Jim H., McFarlane, Sally A., Miller, Mark A., and Johnson, Karen L.. Cloud properties and associated radiative heating rates in the tropical western Pacific.  United States: N. p., 2007. 
        Web.  doi:10.1029/2006JD007555.

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                    Mather, Jim H., McFarlane, Sally A., Miller, Mark A., & Johnson, Karen L.. Cloud properties and associated radiative heating rates in the tropical western Pacific.  United States.  doi:10.1029/2006JD007555.

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                    Mather, Jim H., McFarlane, Sally A., Miller, Mark A., and Johnson, Karen L.. Thu .  
        "Cloud properties and associated radiative heating rates in the tropical western Pacific".  United States.  
        doi:10.1029/2006JD007555.

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@article{osti_964627,

  title        = {Cloud properties and associated radiative heating rates in the tropical western Pacific},

  author       = {Mather, Jim H. and McFarlane, Sally A. and Miller, Mark A. and Johnson, Karen L.},

  abstractNote = {Radiative heating of the atmosphere affects cloud evolution on the cloud scale and it influences large-scale vertical motion. Obtaining good estimates of radiative heating rate profiles has been difficult due to a lack of cloud profile observations. The Atmospheric Radiation Measurement (ARM) program has been measuring cloud property distributions at sites around the globe including three in the tropical western Pacific (TWP) region. We have analyzed a month of these remote sensing observations at Manus and Nauru to calculate time series of vertical cloud property profiles and radiative heating rates. This data set will be an important tool for describing radiative processes in the tropics and assessing the simulation of these processes in dynamical models.},

  doi          = {10.1029/2006JD007555},

  journal      = {Journal of Geophysical Research. D. (Atmospheres), 112 (Article number: D05201)},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Mar 01 00:00:00 EST 2007},

  month        = {Thu Mar 01 00:00:00 EST 2007}

}

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DOI: 10.1029/2006JD007555

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Cloud Properties and Associated Radiative Heating Rates in the Tropical Western Pacific

Mather, Jim H. ; McFarlane, Sally A. ; Miller, Mark ; ... - Journal of Geophysical Research. D. (Atmospheres), 112:D05201

Radiative heating of the atmosphere affects cloud evolution and atmospheric dynamics. The most direct means available for determining radiative heating profiles is to measure profiles of thermodynamic and cloud properties (temperature, humidity, liquid and ice water content) and use these profiles to calculate radiative fluxes. Obtaining accurate, high resolution profiles of these properties requires active remote sensing instruments. Instruments capable of making these measurements and the techniques for interpreting these measurements for meteorological applications have only recently become available. The Atmospheric Radiation Measurement (ARM) program operates instruments including millimeter wavelength radars and microwave radiometers to measure cloud property distributions atmore »« less
DOI: 10.1029/2006JD007555
Quantifying Diurnal Cloud Radiative Effects by Cloud Type in the Tropical Western Pacific

Burleyson, Casey D. ; Long, Charles N. ; Comstock, Jennifer M. - Journal of Applied Meteorology and Climatology, 54(6):1297-1312

Cloud radiative effects are examined using long-term datasets collected at the three Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Climate Research Facilities in the tropical western Pacific. We quantify the surface radiation budget, cloud populations, and cloud radiative effects by partitioning the data by cloud type, time of day, and as a function of large scale modes of variability such as El Niño Southern Oscillation (ENSO) phase and wet/dry seasons at Darwin. The novel facet of our analysis is that we break aggregate cloud radiative effects down by cloud type across the diurnal cycle. The Nauru cloud populations andmore »« less
DOI: 10.1175/JAMC-D-14-0288.1
A Climatology of Surface Cloud Radiative Effects at the ARM Tropical Western Pacific Sites

McFarlane, Sally A. ; Long, Charles N. ; Flaherty, Julia E. - Journal of Applied Meteorology and Climatology, 52(4):996-1013

Cloud radiative effects on surface downwelling fluxes are investigated using long-term datasets from the three Atmospheric Radiation Measurement (ARM) sites in the Tropical Western Pacific (TWP) region. The Nauru and Darwin sites show significant variability in sky cover, downwelling radiative fluxes, and surface cloud radiative effect (CRE) due to El Niño and the Australian monsoon, respectively, while the Manus site shows little intra-seasonal or interannual variability. Cloud radar measurement of cloud base and top heights are used to define cloud types so that the effect of cloud type on the surface CRE can be examined. Clouds with low bases contributemore »« less
DOI: 10.1175/JAMC-D-12-0189.1
The Role of Cloud Microphysics Parameterization in the Simulation of Mesoscale Convective Systems and Anvil Clouds in the Tropical Western Pacific

Weverberg K. ; Vogelmann A. ; Lin, W. ; ... - Journal of the Atmospheric Sciences
DOI: 10.1175/JAS-D-12-0104.1
Low-cloud characteristics over the tropical western Pacific from ARM observations and CAM5 simulations

Chandra, Arunchandra S. ; Zhang, Chidong ; Klein, Stephen A. ; ... - Journal of Geophysical Research: Atmospheres

Here, this study evaluates the ability of the Community Atmospheric Model version 5 (CAM5) to reproduce low clouds observed by the Atmospheric Radiation Measurement (ARM) cloud radar at Manus Island of the tropical western Pacific during the Years of Tropical Convection. Here low clouds are defined as clouds with their tops below the freezing level and bases within the boundary layer. Low-cloud statistics in CAM5 simulations and ARM observations are compared in terms of their general occurrence, mean vertical profiles, fraction of precipitating versus nonprecipitating events, diurnal cycle, and monthly time series. Other types of clouds are included to putmore »« less
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