Fig. 7: Visualization of assimilation results. | npj Climate and Atmospheric Science

Fig. 7: Visualization of assimilation results.

From: Accurate initial field estimation for weather forecasting with a variational constrained neural network

Fig. 7

The state estimation of two upper-air relative humidity variables (R500 and R850) and two upper-air temperature variables (T500 and T850). For each case, the background field (first column), states estimated by 4DVarNet (second column), ViT (third column), 4DVarFormer (fourth column), and the ERA5 ground truth (fifth column) are shown. The results are generated by only assimilating upper-air temperature observations. For all illustrated cases, the time is 00:00 UTC on 19 July 2021, for there is a tropical cyclone at this time in the East China region.

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