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Using Atmospheric Radiation Measurement Data to Evaluate Satellite Surface Solar Flux Retrievals

The accurate, long-term radiometric data collected by the Atmospheric Radiation Measurement (ARM) Program is essential to evaluating surface radiation budget data from satellites. Because the spatial and temporal characteristics of data from these two sources are different, the comparisons are typically made for long-term average values. While such studies provide a general indication of the quality of satellite flux products, more detailed analysis is required to understand specific retrieval algorithm weaknesses. Here we show how data from the ARM Shortwave Flux Analysis (SFA) Value-Added Product (VAP) are being used to assess solar fluxes in the Global Energy and Water Cycle Experiment (GEWEX) Surface Radiation Budget (SRB), release 2.5.