Causal Analysis of a Strong Wind Process over Yellow and Bohai Seas
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Abstract:
Based on the conventional observational data and NECP/NCAR 1°×1° reanalysis data, a strong wind process happened over the Yellow and Bohai Seas on 5 and 6 December 2012 is analyzed. Results show that there were three phases: the largescale baric gradient wind caused by cold air and surface cyclone led to the gale; the surface allobaric field and its gradient resulted in rapidly increased wind speed during the initial stage; the greater the 3hour pressure change, the larger the allobaric gradient, the greater the change in wind speed. When the north wind prevailed, the positive gradient was consistent with wind direction, and the role of transforming speed growth was more obvious. The complement of highlevel cold advection and the diffusion of lower downstream cold advection have important influence on the course of the strong wind process.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.