Research Article

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

Figure 8

The initial bias of geopotential height in vertical section (unit: m2/s2) (a) AIRS-CTRL; (b) AIRS_GRD-AIRS; (c) AIRS_SYB-AIRS.
(a)
(b)
(c)