【摘要】：以西北太平洋2013年第7號超強臺風"蘇力"為例,基于臺風風場分解原理并采用改進的Tikhonov正則化原理進行數(shù)值微分,結(jié)合臺風散度場和渦度場的分布規(guī)律,應用HY-2A/SCAT散射計海表面風場數(shù)據(jù)對臺風"蘇力"進行了中心定位、路徑追蹤、臺風背景風場提取和臺風徑向、切向風提取和分析。結(jié)果表明,結(jié)合散度場和渦度場進行臺風中心定位的方法所得到的臺風中心與聯(lián)合臺風警報中心JTWC最優(yōu)路數(shù)據(jù)相比較,誤差合理。文中所提取得到的實際(相對)徑向風場和切向風場的分布特征驗證了早期飛機偵測所得到部分結(jié)論。歸一化切向風廓線呈瑞金渦流分布,歸一化徑向風廓線呈倒置的高斯分布模型。
[Abstract]:Based on the decomposition principle of typhoon wind field and the modified Tikhonov regularization principle, the distribution of typhoon divergence field and vorticity field is combined with the numerical differentiation of the super strong typhoon "Su Li" in the Northwest Pacific Ocean in 2013, based on the decomposition principle of typhoon wind field and the improved Tikhonov regularization principle. Using the sea surface wind field data of HY-2A/SCAT scatterometer, the center location, track tracing, typhoon background wind field extraction and radial and tangential wind extraction and analysis of typhoon "Su Li" are carried out. The results show that compared with the JTWC optimal path data of joint typhoon warning center, the error of typhoon center obtained by combining divergence field and vorticity field is reasonable. The actual (relative) radial and tangential wind field distributions obtained in this paper verify some of the conclusions obtained from early aircraft detection. The normalized tangential wind profile is a Ruijin eddy current distribution, and the normalized radial wind profile is an inverted Gao Si distribution model.
【作者單位】： 中國海洋大學海洋遙感研究所;
【基金】：國家基金委-山東省聯(lián)合基金項目(U1406404) 國家高技術研究發(fā)展計劃(2013AA09A505)資助
【分類號】：P714.2
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本文編號：2326905