The Impact of Assimilating Atmospheric Infrared Sounder Observation on the Forecast of Typhoon Tracks
Figure 2
The incremental adjustment in temperature (contours) and velocity (vectors) at 500 hPa as a result of a “single observation” experiment for WRF 3DVAR with a 1°K temperature perturbation given at a grid point. The three panels are with (a) LEN_SCALING = 1.0, (b) LEN_SCALING = 0.5, and (c) LEN_SCALING = 0.1. All three cases are with VAR_SCALING = 1.0. The scale of velocity vector is indicated below each panel. The red bar in panel (a) marks the distance of 1000 km.
