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During different stages of Hermine, extensive dropsonde missions took place by using the NASA Global Hawk platform. The different plots below show the observation statistics for dropsondes for temperatures and wind vector difference for the days with most dropsondes. The panels in each plot shows the first guess departures (obs-fg, right) and analysis departures (obs-an, left). The top row is for all dropsonde observations and the bottom for used observations. Each panels include averaged statistics in the title bar. In all but one of the plot, the standard deviation of the departures is decreased from the first guess to the analysis.
25 August 12z
30 August 00z
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