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

<div>The root-mean-square fit of the forecast to the ECMWF analysis for (a) wind, (b) temperature, and (c) specific humidity at 72-h forecast lead time for the GSI3DVar and the 3DEnsVar experiments. Solid and dashed lines are for the GSI3DVar and the 3DEnsVar experiments. Black, blue, and red lines are for control, NoAMSU, and NoRAOB experiments, respectively.</div>

Advances in Meteorology

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Figure 4

Figure 4: A Comparison of the Impacts of Radiosonde and AMSU Radiance Observations in GSI Based 3DEnsVar and 3DVar Data Assimilation Systems for NCEP GFS 

Figure 4 | A Comparison of the Impacts of Radiosonde and AMSU Radiance Observations in GSI Based 3DEnsVar and 3DVar Data Assimilation Systems for NCEP GFS 