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首页> 外文会议>Remote Sensing of the Marine Environment; Proceedings of SPIE-The International Society for Optical Engineering; vol.6406 >On the warm pool dynamics in the southeastern Arabian Sea during April - May 2005 based on the satellite remote sensing and ARGO float data
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On the warm pool dynamics in the southeastern Arabian Sea during April - May 2005 based on the satellite remote sensing and ARGO float data

机译：基于卫星遥感和ARGO漂浮数据的阿拉伯海东南部2005年4月至5月暖池动态

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摘要

Observational data from the Arabian Sea Monsoon Experiment (ARMEX-Phase IIA) in the southeastern Arabian Sea (SEAS) showed intense warming with the SST up to 31.5℃ during April - May 2005. Analysis of 5-day repeat cycles of temperature and salinity profiles from an ARGO float (ID No. 2900345) in a 3°x1° box closer to ARMEX-II buoy (8.3°N, 72.68°E) in the SEAS during January - September 2005 revealed evolution of warm pool (SST > 28℃) in spring 2005. The Argo data derived D20 (depth of 20℃ isotherm) showed the influence of remote forcing during January -May, and local wind forcing during southwest monsoon. Low salinity waters (< 34.0) occupied the top 30 m during January - February followed by temperature inversions (up to 0.5℃) in the 30-60 m depth range. From the peak spring warming, the SST dropped gradually by 3.5℃ by end-July with the advent of southwest monsoon followed by a decrease in net heat gain upto 100 W/m~2. The merged weekly products of sea surface height anomalies and the NLOM simulated surface currents showed complex surface circulation consisting of seasonal Lakshadweep High/Low in winter/summer. The examined oceanic and atmospheric variables showed an intraseasonal variability with 41 to 63 day period, coinciding with the Madden-Julian Oscillation.
机译：阿拉伯海东南部（SEAS）的阿拉伯海季风实验（ARMEX-IIA期）的观测数据显示，2005年4月至5月，SST高达31.5℃，出现了强烈的变暖现象。5天重复的温度和盐度剖面分析在2005年1月至9月期间，一个更靠近ARMEX-II浮标（8.3°N，72.68°E）的3°x1°盒子中的ARGO浮子（ID号2900345）在2005年1月至9月间揭示了暖池的演变（SST> 28℃） ）于2005年春季进行。Argo数据推导出的D20（等温深度20℃）显示了1月至5月的偏远强迫和西南季风期间的局部风强迫的影响。在1-2月，低盐度水（<34.0）占据了前30 m，随后在30-60 m的深度范围内发生了温度反转（最高0.5℃）。从春季变暖高峰开始，随着西南季风的到来，SST到7月底逐渐下降了3.5℃，其净热吸收降低了100 W / m〜2。每周海表高度异常和NLOM模拟的海流合并后的结果表明，复杂的地表环流包括冬季/夏季的季节性Lakshadweep高/低。检查的海洋和大气变量显示了41到63天的季节内变化，这与Madden-Julian振荡一致。

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