HR: 0800h
AN: A41A-0012    [Abstracts]
TI: Calculation of "Validated" Radiative Heating Rates at Atmospheric Radiation Measurement (ARM) Climate Research Facilities
AU: Mlawer, E
EM: emlawer@aer.com
AF: Atmospheric and Environmental Research, Inc., 131 Hartwell Ave, Lexington, MA 02421,
AU: * Delamere, J
EM: jdelamer@aer.com
AF: Atmospheric and Environmental Research, Inc., 131 Hartwell Ave, Lexington, MA 02421,
AU: Shippert, T
EM: tim.shippert@pnl.gov
AF: Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99352,
AU: Miller, M
EM: miller@bnl.gov
AF: Brookhaven National Laboratory, P.O. Box 5000, Upton, NY 11937,
AU: Turner, D
EM: dturner@ssec.wisc.edu
AF: University of Wisconsin Madison, Space Science and Engineering Center 1225 West Dayton Street, Madison, WI 53706,
AU: Jensen, M
EM: mjensen@bnl.gov
AF: Brookhaven National Laboratory, P.O. Box 5000, Upton, NY 11937,
AU: Johnson, K
EM: kjohnson@bnl.gov
AF: Brookhaven National Laboratory, P.O. Box 5000, Upton, NY 11937,
AU: Dunn, M
EM: mdunn@bnl.gov
AF: Brookhaven National Laboratory, P.O. Box 5000, Upton, NY 11937,
AU: Troyan, D
EM: dtroyan@bnl.gov
AF: Brookhaven National Laboratory, P.O. Box 5000, Upton, NY 11937,
AU: Long, C
EM: chuck.long@pnl.gov
AF: Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99352,
AU: Flynn, C
EM: connor.flynn@pnl.gov
AF: Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99352,
AU: Clough, S
EM: sclough@aer.com
AF: Atmospheric and Environmental Research, Inc., 131 Hartwell Ave, Lexington, MA 02421,
AU: Shupe, M
EM: matthew.shupe@noaa.gov
AF: University of Colorado-CIRES, NOAA/ESRL/PSD R/PSD3 325 Broadway, Boulder, CO 80305,
AU: Clothiaux, E
EM: cloth@essc.psu.edu
AF: Penn State, Dept. of Meteorology 603 Walker Bldg, University Park, PA 16802,
AB: Climate and weather prediction models require accurate calculations of vertical profiles of radiative heating. In contrast to calculations of radiance and irradiance at the surface and top-of-atmosphere (TOA), heating rate calculations cannot be directly validated due to the lack of corresponding observations. However, surface and TOA measurements can indirectly establish the quality of computed heating rates through validation of the calculated irradiances at the atmospheric boundaries. The Atmospheric Radiation Measurement (ARM) program has produced continuous profiles of computed radiative heating rates at its Climate Research Facilities that have been validated using this approach. The computed surface and TOA irradiances have been subject to extensive radiative closure analysis, an effort that has led to significant advancements in the three components of radiative closure studies: model calculations, including spectroscopic parameters; radiometric measurement accuracy; and the specification of the atmospheric state in the radiating column. In particular, this effort has taken advantage of ARM's substantial set of active and passive sensors that are sensitive to the cloud properties within the radiating column to evaluate numerous cloud property retrieval algorithms. This effort, named the ARM Broadband Heating Rate Profile (BBHRP) project, is a collaboration of all the working groups in the program. This presentation will present selected results from this closure study for both clear and cloudy conditions, including an analysis of the relative model-measurement agreement resulting from the use of various cloud property retrieval algorithms. Focus will be placed on results from the ARM North Slope of Alaska site, including the presentation of computed heating rates for cases of interest.
UR: http://engineering.arm.gov/~shippert/BBHRP/
DE: 3300 ATMOSPHERIC PROCESSES
DE: 3311 Clouds and aerosols
DE: 3359 Radiative processes
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting