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Improved TOA shortwave and longwave broadband fluxes derived for the Southern Great Plains

 
Poster PDF

Authors

David A Rutan — Science Systems and Applications. Inc./NASA - LRC
David Robert Doelling — Science Systems and Applications, Inc.
Patrick Minnis — NASA - Langley Research Center
Mandana Khaiyer — Science Systems and Applications, Inc. (SSAI)
Michele Nordeen — Science Systems and Applications. Inc./NASA - LRC
Helen Yi — Science Systems and Applications. Inc./NASA - LRC
Rabindra Palikonda — Science Systems and Applications. Inc./NASA - LRC

Category

Radiation

Description

The Geostationary Operational Environmental Satellite (GOES-11) provides half-hourly coverage of the western United States, including the Southern Great Plains (SGP) region. By using narrowband-to-broadband (NB-BB) conversion coefficients, useful climate information can be derived from GOES-11 narrowband sensors. Past studies have employed NB-BB coefficients, derived using GOES data matched with broadband longwave (LW) and shortwave (SW) fluxes from the Clouds and the Earth's Radiant Energy Budget (CERES) instrument aboard Terra. However, Terra is limited to twice daily overpasses, with a 10:30 local crossing time. To improve the availability of broadband data for the NB-BB fit, Aqua CERES fluxes (1:30 local crossing time) will be included in the CERES BB data. NB-BB coefficients are derived seasonally from coincident 1 degree-averaged 2007 GOES-11/CERES LW and SW fluxes; LW fits are derived separately for day and night. Validation of these fits is made using 2008–2010 CERES Terra and Aqua data. Comparison of the newly derived fluxes is made to those derived from the Terra-only NB-BB fit, as well as results derived using the Fu-Liou radiative transfer model.