Cloud scattering impact on thermal radiative transfer and global longwave radiation
نویسندگان
چکیده
منابع مشابه
Effects of Inhomogeneous Cloud Properties on 2-D Longwave Radiative Transfer
Clouds have a profound influence on radiative fluxes, for both solar and infrared radiation. Inhomogeneous clouds, in particular, have complex effects on fluxes and can be challenging to parameterize. Killen and Ellingson (1994) showed the importance of cloud geometry and spatial distribution on infrared fluxes, while Takara and Ellingson (1996) emphasized the necessity of modeling both cloud g...
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Long wave radiation (LWR) forcing is determined in atmospheric global climate models (AGCMs) by a heating algorithm embedded in the model. These algorithms compute vertical heating rate (HR) profiles from profiles of temperature (T), moisture (Q), clouds, and minor atmospheric constituents; thus the HRs depend on the vertical structure of the input variables plus internal physics. The sensitivi...
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Annual cycles of downwelling broadband infrared radiative flux and spectral downwelling infrared flux were determined using data collected at the South Pole during 2001. Clear-sky conditions are identified by comparing radiance ratios of observed and simulated spectra. Clear-sky fluxes are in the range of 110–125 W m 2 during summer (December–January) and 60–80 W m 2 during winter (April–Septem...
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A parameterization for the scattering of thermal infrared (longwave) radiation by clouds has been developed based on discrete-ordinate multiple-scattering calculations. The effect of backscattering is folded into the emission of an atmospheric layer and the absorption between levels by scaling the cloud optical thickness. The scaling is a function of the single-scattering albedo and asymmetry f...
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ژورنال
عنوان ژورنال: Journal of Quantitative Spectroscopy and Radiative Transfer
سال: 2019
ISSN: 0022-4073
DOI: 10.1016/j.jqsrt.2019.106669