Satellite determinations of the relationship between total longwave radiation flux and infrared window radiance

摘要: Abstract Nimbus-7 satellite observations are used to determine the relationship between total longwave radiation flux and radiance in 10-12 μm infrared window. The fluxes obtained from earth budget (ERB) narrow-field-of-view (NFOV) of radiance; IR window radiances those measured by Temperature Humidity Infrared Radiometer (THIR). Regression equations relating equivalent brightness temperatures temperature These empirical compared similar regression based on radiative transfer calculations for a large sample atmospheric soundings. latter theoretical NOAA processing operational polar orbiting satellites obtain estimates. observational results indicate that there is very high correlation temp...