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Longwave radiative transfer in the a...

Delamere, Jennifer Simmons.

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Longwave radiative transfer in the atmosphere: Model development and applications.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Longwave radiative transfer in the atmosphere: Model development and applications./
Author:	Delamere, Jennifer Simmons.
Description:	153 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-05, Section: B, page: 2231.
Contained By:	Dissertation Abstracts International64-05B.
Subject:	Physics, Atmospheric Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3092290

Longwave radiative transfer in the atmosphere: Model development and applications.
Delamere, Jennifer Simmons.

Longwave radiative transfer in the atmosphere: Model development and applications. - 153 p.

Source: Dissertation Abstracts International, Volume: 64-05, Section: B, page: 2231.

Thesis (Ph.D.)--University of Alaska Fairbanks, 2003.

A FLexible Radiative Transfer Tool (FLRTT) has been developed to facilitate the construction of longwave, correlated <italic>k</italic>-distribution, radiative transfer models. The correlated <italic>k</italic>-distribution method is a technique which accelerates calculations of radiances, fluxes, and cooling rates in inhomogeneous atmospheres; therefore, correlated <italic> k</italic>-distribution models are appropriate for simulations of satellite radiances and inclusion into general circulation models. FLRTT was used to build two new rapid radiative transfer models, RRTM_HIRS and RRTM_v3.0, which maintain accuracy comparable to the line-by-line radiative transfer model LBLRTM.Subjects--Topical Terms:

1019431
Physics, Atmospheric Science.

Longwave radiative transfer in the atmosphere: Model development and applications.
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035 $a (UnM)AAI3092290
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100 1 $a Delamere, Jennifer Simmons. $3 1899893
245 1 0 $a Longwave radiative transfer in the atmosphere: Model development and applications.
300 $a 153 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-05, Section: B, page: 2231.
500 $a Adviser: Knut H. Stamnes.
502 $a Thesis (Ph.D.)--University of Alaska Fairbanks, 2003.
520 $a A FLexible Radiative Transfer Tool (FLRTT) has been developed to facilitate the construction of longwave, correlated <italic>k</italic>-distribution, radiative transfer models. The correlated <italic>k</italic>-distribution method is a technique which accelerates calculations of radiances, fluxes, and cooling rates in inhomogeneous atmospheres; therefore, correlated <italic> k</italic>-distribution models are appropriate for simulations of satellite radiances and inclusion into general circulation models. FLRTT was used to build two new rapid radiative transfer models, RRTM_HIRS and RRTM_v3.0, which maintain accuracy comparable to the line-by-line radiative transfer model LBLRTM.
520 $a <italic>Iacono et al</italic>. [2003] evaluated upper tropospheric water vapor (UTWV) simulated by the National Center for Atmospheric Research Community Climate Model, CCM3, by comparing modeled, clear-sky brightness-temperatures to those observed from space by the High-resolution Radiation Sounder (HIRS). CCM3 was modified to utilize the rapid radiative transfer model RRTM and the separate satellite-radiance module, RRTM_HIRS, which calculates brightness temperatures in two HIRS channels. By incorporating these accurate radiative transfer models into CCM3, the longwave radiative transfer calculations have been removed as a significant source of error in the simulations. An important result of this study is that CCM3 exhibits moist and dry discrepancies in UTWV of 50% in particular climatic regions, which may be attributed to errors in the CCM3 dynamical schemes.
520 $a RRTM_v3.0, an update of RRTM, is a rapid longwave radiative transfer appropriate for use in general circulation models. Fluxes calculated by RRTM_v3.0 agree with those computed by the LBLRTM to within 1.0 W/m<super>2</super> at all levels, and the computed cooling rates agree to within 0.1 K/day and 0.3 K/day in the troposphere and stratosphere, respectively.
520 $a This thesis also assessed and improved the modeling of clear-sky, longwave radiative fluxes at the Atmospheric Radiation Measurement Program North Slope of Alaska site by simultaneously addressing the specification of the atmosphere, radiometric measurements, and radiative transfer modeling. Consistent with findings from other field sites, the specification of the atmospheric water vapor is found to be a large source of uncertainty in modeled radiances and fluxes. Improvements in the specification of carbon dioxide optical depths within LBLRTM resulted, in part, from this analysis.
590 $a School code: 0006.
650 4 $a Physics, Atmospheric Science. $3 1019431
650 4 $a Geophysics. $3 535228
690 $a 0608
690 $a 0373
710 2 0 $a University of Alaska Fairbanks. $3 718922
773 0 $t Dissertation Abstracts International $g 64-05B.
790 1 0 $a Stamnes, Knut H., $e advisor
790 $a 0006
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3092290