HY-2A散射计数据在台风“苏力”海表面风场结构研究中的应用
发布时间：2018-11-12 10:57
【摘要】：以西北太平洋2013年第7号超强台风"苏力"为例,基于台风风场分解原理并采用改进的Tikhonov正则化原理进行数值微分,结合台风散度场和涡度场的分布规律,应用HY-2A/SCAT散射计海表面风场数据对台风"苏力"进行了中心定位、路径追踪、台风背景风场提取和台风径向、切向风提取和分析。结果表明,结合散度场和涡度场进行台风中心定位的方法所得到的台风中心与联合台风警报中心JTWC最优路数据相比较,误差合理。文中所提取得到的实际(相对)径向风场和切向风场的分布特征验证了早期飞机侦测所得到部分结论。归一化切向风廓线呈瑞金涡流分布,归一化径向风廓线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.
【作者单位】： 中国海洋大学海洋遥感研究所;
【基金】：国家基金委-山东省联合基金项目(U1406404) 国家高技术研究发展计划(2013AA09A505)资助
【分类号】：P714.2
，
本文编号：2326905
[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.
【作者单位】： 中国海洋大学海洋遥感研究所;
【基金】：国家基金委-山东省联合基金项目(U1406404) 国家高技术研究发展计划(2013AA09A505)资助
【分类号】：P714.2
，
本文编号：2326905
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