A Comparison of the Impacts of Radiosonde and AMSU Radiance Observations in GSI Based 3DEnsVar and 3DVar Data Assimilation Systems for NCEP GFS

<div>Geographical distribution of 72-hour forecast impact relative to the control forecast on 500 hPa geopotential height in the (a) GSI3DVar-NoAMSU, (b) GSI3DVar-NoRAOB, (c) 3DEnsVar-NoRAOB, and (d) 3DEnsVar-NoAMSU experiments. Color contours shown here are in percentage (%). Red (blue) color represents positive (negative) impact of the observations on the forecast.</div>

Advances in Meteorology

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Figure 9

Figure 9: A Comparison of the Impacts of Radiosonde and AMSU Radiance Observations in GSI Based 3DEnsVar and 3DVar Data Assimilation Systems for NCEP GFS 

Figure 9 | A Comparison of the Impacts of Radiosonde and AMSU Radiance Observations in GSI Based 3DEnsVar and 3DVar Data Assimilation Systems for NCEP GFS 