Improved TOA Broadband Shortwave and Longwave Fluxes over Various ARM Domains

Category: Radiation

Top-of-atmosphere broadband longwave and shortwave fluxes are essential for evaluating climate change and studying cloud radiative interactions. Geostationary satellites can be employed to monitor the rapidly changing fluxes over large areas such as the ARM Southern Great Plains (SGP) and Tropical Western Pacific (TWP) sites. The narrowband measurements from geostationary satellites are converted to broadband fluxes by using narrowband-to-broadband (NB-BB) conversion coefficients. Empirical NB-BB flux conversion fits have been derived by matching twice-daily coincident broadband fluxes from the CERES instrument aboard the Terra satellite (10:30 local crossing time). These NB-BB fits have been derived for distinct ARM domains and geostationary satellites. Separate fits have been derived using GOES-10/CERES Terra Ed2C for the Marine Stratus Radiation Aerosol and Drizzle (MASRAD) ARM Mobile Facility deployment from March–September 2005 and GOES-13/CERES Terra Ed3 for the Midlatitude Continental Convective Clouds Experiment (MC3E) campaign covering the Southern Great Plains (SGP) domain from April–June 2011. Recent coverage of the TWP domain with MTSAT-2/Terra CERES Ed3 is provided by fits derived from July–October 2010. The NASA/Langley VISST algorithm incorporates the new fits to derive TOA BB fluxes, as well as complete cloud and radiative property data sets. The fluxes are validated against CERES Terra/Aqua from various time periods.

This poster will be displayed at ASR Science Team Meeting.

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