Angular dependence models for radiance to flux conversionAngular dependence models (ADM) used for converting the measured radiance to flux at the top of the atmosphere are reviewed, and emphasis is placed on the measure of their effectiveness and the implications of requiring the ADMs to satisfy reciprocity. The overall significance of the ADMs is figured out by analyzing the same satellite data with a single Lambertian model, single mean model, and the 12 Earth Radiation Budget Experiment (ERBE) ADMs. It is shown that the Lambertian ADM is inadequate, while the mean ADM results in nearly unbiased fluxes but creates substantial differences for individual pixel fluxes. The standard ERBE ADM works well except for a 10-pct to 15-pct albedo growth across the scan; a modified ADM based on the standard ERBE ADM but forced to satisfy the principle of reciprocity increases the limb brightening and reduces the albedo growth but does not improve the scanner and nonscanner intercomparison.
Document ID
19910051988
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Green, Richard N. (NASA Langley Research Center Hampton, VA, United States)
Suttles, John T. (NASA Langley Research Center Hampton, VA, United States)
Wielicki, Bruce A. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: Long-term Monitoring of the Earth''s Radiation Budget