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Potential temperature + potential vorticity, Humidity + vertical motion : to characterize the cold core and warm core structures of Hurricane Nadine and the cut-off low. PV + vertical velocity (+ relative humidity) : a classical cross-section to see if a PV anomaly is accompanied with vertical motion or not. |
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4 : 10meter winds + 6hourly RR + MSLP in background --> We should see an impact on the RR over France around t+108h (cf Pantillon fig 2)5 : 330K PV + 330K winds + MSLP in background (fig 13 in Pantillon) --> Interaction between Nadine and the through.
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This completes the second exercise. You have seen how the ECMWF operational HRES forecast of 2012-09-20 00Z performed compared to the analysis. The next exercises look at the ECMWF ensemble. |
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