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A solar radiation parameterization for atmospheric studies. volume 15
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Chou, Ming-Dah |
| Editor | Suarez, Max J. |
| Copyright Year | 1999 |
| Description | The solar radiation parameterization (CLIRAD-SW) developed at the Goddard Climate and Radiation Branch for application to atmospheric models are described. It includes the absorption by water vapor, O3, O2, CO2, clouds, and aerosols and the scattering by clouds, aerosols, and gases. Depending upon the nature of absorption, different approaches are applied to different absorbers. In the ultraviolet and visible regions, the spectrum is divided into 8 bands, and single O3 absorption coefficient and Rayleigh scattering coefficient are used for each band. In the infrared, the spectrum is divided into 3 bands, and the k-distribution method is applied for water vapor absorption. The flux reduction due to O2 is derived from a simple function, while the flux reduction due to CO2 is derived from precomputed tables. Cloud single-scattering properties are parameterized, separately for liquid drops and ice, as functions of water amount and effective particle size. A maximum-random approximation is adopted for the overlapping of clouds at different heights. Fluxes are computed using the Delta-Eddington approximation. |
| File Size | 1924745 |
| Page Count | 51 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19990060930 |
| Archival Resource Key | ark:/13960/t0rr6sd5s |
| Language | English |
| Publisher Date | 1999-06-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Rayleigh Scattering Oxygen Atmospheric Models Carbon Dioxide Scattering Coefficients Ozone Absorptivity Water Vapor Radiant Heating Parameterization Aerosols Clouds Meteorology Atmospheric Radiation Solar Radiation Eddington Approximation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
