Abstract
Radiative budgets of the troposphere are highly dependent on cloud conditions present. Thus, estimates of quantities for these budgets taken from climatological studies are not applicable to specific cases of cyclone development and/or strong air mass modification.A radiative scheme, using cloud information obtained from the operational Three Dimensional Nephanalysis (3DNEPH) Model of the U.S. Air Force Global Weather Central, has been developed to study radiative transfer during different synoptic conditions during the Air-Mass Transformation Experiment (AMTEX).Comparisons of calculated downward irradiance components with measured values indicate that the model provides acceptable results when the cloud data, which are spatial averages, are representative of the location where the model is applied.Effect of clouds on tropospheric radiation budgets, and time and spatial variations of atmospheric radiation budget components over the AMTEX region are discussed.
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