【摘要】：以西北太平洋2013年第7號(hào)超強(qiáng)臺(tái)風(fēng)"蘇力"為例,基于臺(tái)風(fēng)風(fēng)場(chǎng)分解原理并采用改進(jìn)的Tikhonov正則化原理進(jìn)行數(shù)值微分,結(jié)合臺(tái)風(fēng)散度場(chǎng)和渦度場(chǎng)的分布規(guī)律,應(yīng)用HY-2A/SCAT散射計(jì)海表面風(fēng)場(chǎng)數(shù)據(jù)對(duì)臺(tái)風(fēng)"蘇力"進(jìn)行了中心定位、路徑追蹤、臺(tái)風(fēng)背景風(fēng)場(chǎng)提取和臺(tái)風(fēng)徑向、切向風(fēng)提取和分析。結(jié)果表明,結(jié)合散度場(chǎng)和渦度場(chǎng)進(jìn)行臺(tái)風(fēng)中心定位的方法所得到的臺(tái)風(fēng)中心與聯(lián)合臺(tái)風(fēng)警報(bào)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(shí)際(相對(duì))徑向風(fēng)場(chǎng)和切向風(fēng)場(chǎng)的分布特征驗(yàn)證了早期飛機(jī)偵測(cè)所得到部分結(jié)論。歸一化切向風(fēng)廓線(xiàn)呈瑞金渦流分布,歸一化徑向風(fēng)廓線(xiàn)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(guó)海洋大學(xué)海洋遙感研究所;
【基金】：國(guó)家基金委-山東省聯(lián)合基金項(xiàng)目(U1406404) 國(guó)家高技術(shù)研究發(fā)展計(jì)劃(2013AA09A505)資助
【分類(lèi)號(hào)】：P714.2
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本文編號(hào)：2326905