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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >On the plausible reasons for the formation of onset vortex in the presence of Arabian Sea mini warm pool
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On the plausible reasons for the formation of onset vortex in the presence of Arabian Sea mini warm pool

机译：存在阿拉伯海迷你温水游泳池时形成涡流的合理原因

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It has been established through a numerical model that the onset vortex (OV) was formed dramatically in the shear line on the northern flank of a low level jet (LLJ) at 850 hPa over the mini warm pool (MWP) in the East Central Arabian Sea with the aidof sea surface temperature (SST) anomalies using MONEX-79 data. This study has led to serious investigation of MWP over the EGAS, but little attention has been given to its counterpart, i.e. the atmospheric pattern at 850 hPa, the level at which OV generally forms and extends on either side during the course of development. The present study examines the SST distribution over the Arabian Sea and circulation at 850 hPa to identify the MWP and the LLJ positions for five consecutive days with onset day asits centre and for six consecutive years 2000-05. The study has revealed that OV had formed only in 2001 under the influence of MWP on the northern flank of LLJ. During other years it seldom formed due to (i) absence of MWP, (ii) lack of sufficient strength of LLJ, and (H_1) absence of the location of shear line (over the northern flank of LLJ) over MWP. The air-sea flux transfer processes for the OV year 2001 and a non-OV year 2002 are studied and compared for better understanding of the above processin relation to the OV and non-OV weather conditions over the study area.
机译：通过数值模型已经确定，在东部中部的微型暖池（MWP）上，在850 hPa的低空急流（LLJ）的北翼剪切线上，急剧形成了涡旋（OV）使用MONEX-79数据，借助海面温度（SST）异常对海洋进行处理。这项研究已导致对EGAS上的MWP进行了认真的调查，但对它的对应部分却很少关注，即850 hPa的大气模式，即在开发过程中OV通常在两侧形成和扩展的水平。本研究检查了850 hPa上阿拉伯海的海面温度分布和环流，以确定以发病日为中心的连续5天和2000-05年连续6年的MWP和LLJ位置。研究表明，OV只是在MWP对LLJ的北翼影响下才形成的。在其他年份中，它的形成很少是由于（i）没有MWP，（ii）缺乏LLJ的足够强度，以及（H_1）缺少MWP上的剪切线位置（在LLJ的北侧）。对2001年OV年和2002年非OV年的海-气通量传递过程进行了研究和比较，以更好地了解上述过程与研究区域的OV和非OV天气状况的关系。

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