ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Analysis of Apparent Heat Sources and Moisture Sinks over Beijing during the Heavy Rain in 1998
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Abstract:
Using high resolution GMS TBB data and every 6h NCEP/NCAR reanalysis data,the synoptic course of a heavy rain over Beijing on 5 July,1998 was studied.Results show that the convective activity can be developed and maintained easily following the ahead of V pattern low TBB region,and there are two convective activities occurring in western Beijing on 5 July.It is also found that local variation and advective term of apparent heat sources(Q1) or moisture sinks(Q2) can not be neglected alone except considering both in the meantime,Q1 and Q2 are mostly contributed by vertical advective terms,the heat center of Q1 is near by 500hPa,while the heat center of Q2 is about at 700hPa.The spatial and temporal distributions of Q1 and Q2 which describe the strong vertical eddy heat and moisture transport during the heavy rain were presented in detail.
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