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首页> 外文期刊>Ocean Dynamics >A numerical study on the mixed layer depth variability and its influence on the sea surface temperature during 2013-2014 in the Bay of Bengal and Equatorial Indian Ocean
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A numerical study on the mixed layer depth variability and its influence on the sea surface temperature during 2013-2014 in the Bay of Bengal and Equatorial Indian Ocean

机译：混合层深度变异性的数值研究及其对孟加拉邦海湾海湾海面温度的影响及其对海表面温度的影响

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This study addresses the air-sea interaction processes and mixed layer variability, which cause the intraseasonal oscillations in the sea surface temperature (SST) during January 2013-December 2014 using the Regional Ocean Modeling System (ROMS). We have analyzed the SST variability at three locations-northern Bay of Bengal (BoB)/15 degrees N, 90 degrees E (R15), central BoB/12 degrees N, 90 degrees E (R12), and equatorial Indian Ocean (EIO)/0 degrees N, 80.5 degrees E (R0). During northeast monsoon (NEM) and southwest monsoon (SWM), intraseasonal SST variability is respectively controlled by the intense outgoing fluxes (sum of longwave radiation, latent heat flux, and sensible heat flux) and zonal wind stress. The intraseasonal SST variability in spring and fall is modulated by intense incoming shortwave radiation. There is a profound impact of mixed layer depth (MLD) variations on the intraseasonal SST oscillations in the BoB and EIO. At R15, and R12, deepened simulated MLD is associated with the lowered SST variability in the NEM and SWM. In spring and fall, the shallow MLD variability corresponds to higher intraseasonal SST variability at the buoy locations. In the northern BoB, ROMS cannot capture barrier layer (BL) and temperature inversion (TI) accurately in the winter and premonsoon season due to salinity bias, resulting in the difference between simulated and actual MLD. But the simulated MLD bias does not affect the intraseasonal SST structures in the NEM and pre-SWM. In the northern BoB, the proper representation of salinity structure may represent BL, TI, and MLD, accurately in the simulation during the winter and premonsoon season.
机译：本研究解决了海运相互作用过程和混合层变异性，这在2013年1月2013年1月的海面温度（SST）中导致海面温度（SST）的季节性振荡使用区域海洋建模系统（ROM）。我们已经分析了孟加拉北部的三个地点（鲍勃）/ 15摄氏度，90摄氏度（R15），中央鲍勃/ 12摄氏度，90度E（R12）和赤道印度洋（EIO）的SST变异性/ 0度N，80.5°E（R0）。在东北季风（NEM）和西南季风（SWM）期间，分别由强烈的输出助熔剂（长波辐射，潜热通量和明智的热通量）和Zonal风应力来控制季节性SST可变性。弹簧和落下的季节性SST变异是通过强烈的传入的短波辐射调节。混合层深度（MLD）变化对鲍勃和EIO中的季节性SST振荡的变化产生了深远的影响。在R15和R12，加深的模拟MLD与NEM和SWM中的降低的SST变异相关。在春天和秋季，浅MLD变异性对应于浮标位置的较高的季节性SST变异性。在北部鲍勃，由于盐度偏差，ROM不能在冬季和预热季节准确地捕获阻挡层（BL）和温度反转（TI），导致模拟和实际MLD之间的差异。但模拟的MLD偏压不会影响NEM和Pre-SWM中的季节性SST结构。在北鲍勃，盐度结构的适当表示可以代表BL，TI和MLD，在冬季和前大使季节的模拟中准确。

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