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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Associated with the <strong>in</strong>troduction <strong>of</strong> NOAA-15 <strong>ATOVS</strong>, thehumidity <strong>in</strong> the lower free atmosphere <strong>in</strong>creases. It is a residual <strong>of</strong>the balance between the moisture <strong>in</strong>crement and precipitation. <strong>The</strong> additional precipitation releases latent heat, which is almost<strong>of</strong>fset by the negative change <strong>of</strong> temperature <strong>in</strong>crement. <strong>The</strong> residual<strong>of</strong> this balance drives the large scale overturn<strong>in</strong>g circulation andchanges the temperature field over high latitude and high altituderegion.