Oceanic influence on the Baiu frontal zone in the East China Sea
Oceanic influence on the Baiu frontal zone in the East China Sea
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DOI：
10.1002/2014jd022234
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发表时间：
2015-01-27
影响因子：
4.4
通讯作者：
Tachibana, Yoshihiro
中科院分区：
文献类型：
--
作者：
Kunoki, Shiori;Manda, Atsuyoshi;Tachibana, Yoshihiro
2012年6月，为了分析复杂海温（SST）分布对白羽锋区（BFZ）的影响，在东海黑潮海域进行了高分辨率大气探测样带。还研究了消耗性深海温度仪铸件和连续地面气象观测。在对流层低层风向和地面气温变化特征明显的两个中尺度大气锋。在海温锋周围观测到一个（北）大气锋，与从黑潮延伸出来的暖水舌有关。北部大气锋附近的高海温区增强了不稳定的近地面分层，增强了湍流热通量。它们有助于改变北极区的海洋大气边界层。另一个（南方）大气锋位于BFZ的南端。黑潮上空的强烈蒸发和南风的水汽输送是形成对流层下层条件不稳定气团的重要因素。
A high-resolution transect of atmospheric soundings across the Kuroshio Current in the East China Sea was conducted onboard a ship in June 2012 with the objective of analyzing the influence of the complex sea surface temperature (SST) distribution on the Baiu frontal zone (BFZ). Expendable bathythermograph castings and continuous surface meteorological observations were also examined. Two distinct mesoscale atmospheric fronts, characterized by changes of wind direction in the lower troposphere and surface air temperature, were found in the BFZ. One (northern) atmospheric front was observed around the SST front in relation to a warm water tongue extending from the Kuroshio. A high SST region around the northern atmospheric front enhances unstable near surface stratification and intensifies turbulent heat flux. They help modify the marine atmospheric boundary layer in the BFZ. The other (southern) atmospheric front was at the southern end of the BFZ. Intense evaporation over the Kuroshio and moisture transport by southerly winds were important in forming the conditionally unstable air masses in the lower troposphere of the BFZ.