“0814”號(hào)強(qiáng)臺(tái)風(fēng)發(fā)展維持的環(huán)境場(chǎng)分析

doi:P458.124

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“0814”號(hào)強(qiáng)臺(tái)風(fēng)發(fā)展維持的環(huán)境場(chǎng)分析
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                        P458.124
                    
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中圖分類號(hào):P458.124
基金項(xiàng)目:國家自然科學(xué)基金資助項(xiàng)目（40875030，40730948，40575018）；上海臺(tái)風(fēng)研究基金（2008ST04）

A diagnostic analysis of the intensity change ofstrong typhoon Hagupit

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摘要:

應(yīng)用中國臺(tái)風(fēng)網(wǎng)提供的“黑格比”臺(tái)風(fēng)定位及強(qiáng)度資料、NCAR/NCEP再分析資料及DISCOVER項(xiàng)目組的衛(wèi)星遙感數(shù)據(jù)對(duì)0814號(hào)強(qiáng)臺(tái)風(fēng)“黑格比”的發(fā)展、維持階段進(jìn)行了診斷分析。結(jié)果表明：西北太平洋中部異常偏高的SST為“黑格比”的生成提供了有利的背景條件，浙閩沿海及海南島沿海異常偏高的SST為“黑格比”的發(fā)展和維持提供了有利的環(huán)境條件；西太副高斷裂為東西兩個(gè)單體，“黑格比”移經(jīng)這兩個(gè)單體之間使其強(qiáng)度迅速增強(qiáng)；南亞高壓東側(cè)的強(qiáng)東北氣流將高位渦向臺(tái)風(fēng)環(huán)流輸送，使得臺(tái)風(fēng)得以增強(qiáng)發(fā)展；強(qiáng)勁的西南季風(fēng)為“黑格比”提供了充足的水汽來源，并向臺(tái)風(fēng)環(huán)流輸送了氣旋性相對(duì)渦度帶，使其得以快速發(fā)展并維持強(qiáng)度。

Abstract:

Based on NCAR/NCEP reanalysis data, the intensity change of 0814 strong typhoon Hagupit is diagnosed. The results showed that the high SST of the Western Pacific is conducive to the generation of Haqupit, the offshore high SST of Zhejang, Fujian and Hainan contributes to the development and maintenance of Hagupit. At the TC genesis stage, the subtropical high stretches northward and westward, strengthens and maintains its intensity steadily. When the typhoon moves towards the subtropical high, the pressure gradient between them increases, the south easterly wind enables Hagupit to move northwest quickly and strengthen. When the TC entered the South China Sea, the subtropical high maintains and further strengthens westward, but the westerly trough moves eastward so that the typhoon moves northwestward and develops into a strong typhoon. The intensity change of Hagupit is affected by following factors. In the upper troposphere, the strong northeast wind on the eastern side of South Asia high transports high potential vorticity to the typhoon area, and makes Hagupit develop. In the lower troposphere, strong southwest monsoon provides adequate water sources and transports cyclonic relative vorticity to the typhoon zone, and then enables Haqupit to rapidly develop and maintain its strength.

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趙大軍,于玉斌,李瑩.“0814”號(hào)強(qiáng)臺(tái)風(fēng)發(fā)展維持的環(huán)境場(chǎng)分析.氣象科學(xué),2011,(5):591-597 ZHAO Dajun, YU Yubin, LI Ying. A diagnostic analysis of the intensity change ofstrong typhoon Hagupit. Journal of the Meteorological Sciences,2011,(5):591-597

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收稿日期:2010-08-20
最后修改日期:2010-11-12
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在線發(fā)布日期: 2012-05-16
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