A New Variational Assimilation Method Based on Gradient Information from Satellite Data

Figure 7

The initial 500 hPa wind field deviation (unit: m/s) (a) AIRS-CTRL; (b) AIRS_GRD-AIRS; (c) AIRS_SYB-AIRS; (d) AIRS_SYB_GRD-AIRS_GRD.

(a)

(b)

(c)

(d)