ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Distinguishing the Category of the Summer Convective Weather by Sounding Data in Beijing
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Abstract:
This paper calculated 18 physical parameters and their 6h, 12h, and 24h variations by the sounding data from Beijing Nanjiao Observatory, and then analyzed the physical parameter differences of hailstone, thunderstorm gale, and storm rainfall from May to September in 2007 and 2008. The results show that, as the physical parameters, the 0 ℃ height, the -20 ℃ height, the difference of temperature between 500 hPa and 850 hPa, the inversion height and the lowlevel wind shear could distinguish the category of the rainstorm and hailstorm. Besides, the depression of dew point of 850 hPa and the difference of θse between 500 hPa and 850 hPa are also the important 〖HJ〗conditions. On the other hand, for the 6h variations of the CAPE, DCAPE， K index, the difference of θse between 500 hPa and 850 hPa, PW， and the vertical wind shear of the lower troposphere could also be better to distinguish the hailstorm and the storm rainfall. The results indicate that it is possible to distinguish the summer convective weather by better using of sounding data.
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