Atmospheric Responses to Kuroshio SST Front in the East China Sea under Different Prevailing Winds in Winter and Spring
Atmospheric Responses to Kuroshio SST Front in the East China Sea under Different Prevailing Winds in Winter and Spring
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DOI：
10.1175/jcli-d-13-00675.1
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发表时间：
2015-04
影响因子：
4.9
通讯作者：
Mimi Xu;Haiming Xu
中科院分区：
文献类型：
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作者：
Mimi Xu;Haiming Xu
摘要：利用高分辨率观测和数值模拟研究了不同盛行风下东海黑潮海温锋的大气响应。卫星数据揭示了海温和表面风速之间显着的同相关系，表明了海洋对大气的影响。大气响应根据相对于海温锋方向的相对表面风向而变化。沿锋条件下，锋面较暖（冷）侧翼出现低（高）海压异常，并伴有地面风辐合（发散）。温暖的黑潮上空出现了增强的降水和频繁的积云对流，表明大气响应延伸到了自由对流层。在交叉锋条件下，当气流从冷吹向暖（暖向冷）海表温度时，辐散（辐合）位于海表温度锋的正上方，其大小与顺风海表温度梯度成正比。在这样的盛行风下，...
AbstractAtmospheric responses to the Kuroshio SST front in the East China Sea under different prevailing winds are examined using high-resolution observations and numerical modeling. Satellite data reveal a significant in-phase relationship between SST and surface wind speed, indicative of ocean-to-atmosphere influence. The atmospheric response varies according to the relative surface wind direction with respect to the SST front orientation. Under the alongfront condition, low (high) SLP anomalies are found on the warmer (colder) flank of the front, accompanied by surface wind convergence (divergence). Enhanced precipitation and frequent cumulus convection appear over the warm Kuroshio, suggesting an atmospheric response extending into the free troposphere. Under the cross-front condition, when the air blows from cold to warm (warm to cold) SST, divergence (convergence) is located directly over the SST front, and its magnitude is proportional to the downwind SST gradient. Under such prevailing winds, the ...