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December 1999 wind storms
Evolution of a low-level cyclone in a storm in the absence of an upper-level precursor
Before reaching the french coasts, the two European storms of Christmas 1999 were two low-level cyclones with moderate amplitude traveling across the Alantic. They have rapidly deepened during their interaction with the upper-level large-scale jet. For the second storm, this (...)
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Relationship between convection over Central America and the jet stream bearing on the 1999 December storms
At the end of December 1999, two very powerful and devastating extratropical cyclones hit Western Europe. These two storms were associated with an upper-level zonal jet, remarkable by its intensity and by its large extension over the Atlantic Ocean.
The figure above (...)
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