Influence of the Kuroshio on Mesoscale Convective Systems in the Baiu Frontal Zone over the East China Sea
Influence of the Kuroshio on Mesoscale Convective Systems in the Baiu Frontal Zone over the East China Sea
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DOI：
10.1175/mwr-d-15-0139.1
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发表时间：
2016-03-01
影响因子：
3.2
通讯作者：
Tachibana, Yoshihiro
中科院分区：
文献类型：
--
作者：
Sato, Kazutoshi;Manda, Atsuyoshi;Tachibana, Yoshihiro
利用2011年5月东海大气探测和海洋观测资料，结合连续的地面气象观测、卫星产品和客观分析，记录了2次中尺度对流事件。这些事件发生时，北极区几乎处于停滞状态，中流正在加深。与低空急流相关的近地表南风从BFZ以南输送了温暖潮湿的气团。蒸发量的增加，主要是由于黑潮海表温度的升高，增加了气团的水分含量，并有助于维持对流层低层在BFZ周围对流不稳定的分层。
Two mesoscale convective events in the baiu frontal zone (BFZ) were documented, based on intensive atmospheric soundings and oceanic castings in the East China Sea during May 2011, in addition to continuous surface meteorological observations, satellite products, and objective analyses. These events occurred while the BFZ was nearly stagnant and a mesolow was deepening in the zone. Near-surface southerlies associated with the low-level jet transported a warm, humid air mass from south of the BFZ. Enhanced evaporation, which was mainly attributable to the high sea surface temperature of the Kuroshio, augmented the moisture content of the air mass and helped maintain a convectively unstable stratification in the lower troposphere around the BFZ.