Relationship between Waterlogging over Hubei Province and Air-Sea Interaction
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Abstract:
Using the data of North Pacific SST,subtropical high characteristic indices and deluges in Hubei Province from 1951 to 1994,a detailed investigation is made on the relationship between deluges in Hubei Province and North Pacific SST,and subtropical high characteristic indices.The results show that there is close relationship between the abnormality of SST in several key regions and deluges.Especially the abnormal distribution of subtropical high in spring and early summer is the main factor influencing deluges in Hubei Province.Besides,the abnormal changes of SST and subtropical high are closely connected: the former is about 1 to 3 months earlier than the latter.Using the statistic analysis method,the models are established by using sea temperature and subtropical high characteristic factors respectively to predict heavy waterlogging over Hubei.The models were put to trial use in Hubei flood season.The result indicates that the heavy waterlogging in Hubei has close relation with air-sea interaction.The abnormality of the sea temperature over the North Pacific Ocean resulted in the abnormality of subtropical high,which caused heavy waterlogging over Hubei.
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Clc Number:
P732.6 P732
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.