Effect of nonlinear dynamic process on formation and breakdown of blocking |
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Authors: | Zhang Pei Ni Yunqi |
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Institution: | Meteorological Institute of Jiangsu, Nanjing 210008,Department of Atmospheric Sciences, Nanjing University, Nanjing 210008 |
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Abstract: | With the L—P approximate method(variation of parameter method), a barotropic channel model inβ- plane is used to study the effect of nonlinear interaction between two waves with different scales on the formation of blocking.
The approximate analytical solution, which can describe the process of the blocking formation, maintenance and breakdown,
has been obtained by using the method of aproximate expansion. The importance of nonlinear interaction between two waves with
different scales is stressed in the solution. The result suggests that the nonlinear interaction is the main dynamic process
of the blocking formation. Some required conditions of blocking formation are also discussed. |
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Keywords: | |
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