中文摘要：

垂直的风根本上砍在热带气旋(TC ) 的影响变化紧张。垂直的风的效果在西方的诺思太平洋盆在热带风暴之发展形成和进化上砍很好没被理解。我们在场所有的新统计研究在时期期间在这个区域说出 TC 20002006 使用一第二代的部分最少的广场(请) 回归技术。结果证明降低层(在 850 之间，在海上面的 hPa 和 10 m 出现) 风砍比更重要通常分析了深层砍(在 200 和 850 hPa 之间) 为在 TC 紧张的变化在 TC 增强时期期间。这种关系是特别地强壮的为西低级砍。Downdrafts 导致了由降低层砍从上面把低 e 空气带进边界层，显著地在 TC 流入层减少 e 的价值并且削弱 TC。大价值深层在海洋上砍到菲律宾的岛的东方禁止 TC 形成，当时大价值降低层在中央、西方的诺思太平洋上砍禁止 TC 增强。批评价值深层砍因为 TC 形成是约 10 m s1，和批评价值降低层砍因为 TC 增强是近似机构犌 ? 犌？？

英文摘要：

Vertical wind shear fundamentally influences changes in tropical cyclone （TC） intensity. The effects of vertical wind shear on tropical cyclogenesis and evolution in the western North Pacific basin are not .well understood. We present a new statistical study of all named TCs in this region during the period 2000- 2006 using a second-generation partial least squares （PLS） regression technique. The results show that the lower-layer （between 850 hPa and 10 m above the sea surface） wind shear is more important than the commonly analyzed deep-layer shear （between 200 and 850 hPa） for changes in TC intensity during the TC intensification period. This relationship is particularly strong for westerly low-level shear. Downdrafts induced by the lower-layer shear bring low θe air into the boundary layer from above, significantly reducing values of θe in the TC inflow layer and weakening the TC. Large values of deep-layer shear over the ocean to the east of the Philippine Islands inhibit TC formation, while large values of lower-layer shear over the central and western North Pacific inhibit TC intensification. The critical value of deep-layer shear for TC formation is approximately 10 m s-1, and the critical value of lower-layer shear for TC intensification is approximately ±1.5 m s-1.