The Impact of ATOVS Radiance in MERRA Reanalysis
The Impact of ATOVS Radiance in MERRA Reanalysis
The Impact of ATOVS Radiance in MERRA Reanalysis
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<strong>The</strong> impact <strong>of</strong> NOAA15 (<strong>ATOVS</strong>)A two year ROSS withhold<strong>in</strong>g theNOAA-15 <strong>ATOVS</strong> radiance data has beenproduced to address the impact <strong>of</strong> the<strong>in</strong>troduction <strong>of</strong> <strong>ATOVS</strong> data <strong>in</strong> late 1998.This reanalysis segment is a naturalcont<strong>in</strong>uation <strong>of</strong> <strong>MERRA</strong> at the time beforeNOAA-15 <strong>ATOVS</strong> data is added, exceptthat the new NOAA-15 data that comesalong will not be assimilated. Bycompar<strong>in</strong>g the orig<strong>in</strong>al <strong>MERRA</strong> data withthis NOAA-15_withhold<strong>in</strong>g reanalysissegment, a systematic picture <strong>of</strong> theNOAA-15 impact will be shown.