Introduction

Radiative process is one of the most complex and computational intensive part of all model physics. As an essential part of model physics, it directly and indirectly connects all physics processes with model dynamics, and regulates the overall earth-atmosphere energy exchanges and transformations. The radiation package in NEMS physics has standardized component modules. The schematic radiation module structure is shown in table 1.

Radiation parameterizations are intended to provide a fast and accurate method of determined the total radiative flux at any given location. These calculations provide both the total radiative flux at the ground surface, which is needed for the surface energy budget, and the vertical radiative flux divergence, which is used to calculate the radiative heating and cooling rates of a given atmospheric volume. The magnitude of the terms in the surface energy budget can set the stage for moist deep convection and are crucial to the formation of low-level clouds. In addition, the vertical radiative flux divergence can produce substantial cooling, particularly at the tops of clouds, which can have strong dynamic effect on cloud evolution.

Radiation Scheme Modules

The following links take you to more information about each module.

Driver Module: module_radiation_driver
Shortwave(SW) Module: module_radsw_main
Longwave(LW) Module: module_radlw_main
Astronomy Module: module_radiation_astronomy
Aerosol Module: module_radiation_aerosols
Cloud Module: module_radiation_clouds
Surface Module: module_radiation_surface
Gases Module: module_radiation_gases

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