The Intrusion of Spicy Water Favours the Intensification of Arabian Sea Cyclones

IF 1.6 4区地球科学 Q4 METEOROLOGY & ATMOSPHERIC SCIENCES

Atmosphere-Ocean Pub Date : 2022-09-08 DOI:10.1080/07055900.2022.2118106

K. Maneesha, V. Brahmananda Rao, K. Patnaik, S. H. Franchito

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引用次数: 0

Abstract

ABSTRACT The intensity of the cyclones in the Arabian Sea has been increasing in recent years. Approximately ten storms were intensified into severe cyclones over spicy waters of the northern Arabian Sea during 1998-2019. Reduction in upwelling was observed due to decreasing wind speed, which raised the sea surface temperature (SST) and the intrusion of spicy waters from the Red Sea and the Persian Gulf acted as a barrier to mixing in the top layers, especially in May. Consequently, there was a noticeable increase in the heat content of the 50 m surface layer. This research presents two main rationales that explain the intensification of these cyclones. The first rationale explores the increasing trends in SST and ocean internal energy, while the second investigates the influence of the intrusion of spicy Persian Gulf waters into the Oman coast. The results showed that spicy water from the north suppressed the upwelling in the cold core eddy off the Oman coast and that higher SSTs and high latent heat flux almost double the climatological values off the Oman coast in May.

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辛辣水的侵入有利于阿拉伯海气旋的增强

摘要近年来，阿拉伯海的气旋强度一直在增加。1998年至2019年期间，大约有十场风暴在阿拉伯海北部的辛辣水域增强为严重气旋。由于风速降低，上升流减少，海面温度（SST）升高，红海和波斯湾的辛辣海水入侵成为顶层混合的障碍，尤其是在5月份。因此，50米表层的热含量显著增加。这项研究提出了解释这些气旋增强的两个主要理由。第一个基本原理探讨了SST和海洋内能的增加趋势，而第二个基本原理研究了波斯湾辛辣水域入侵阿曼海岸的影响。结果表明，来自北方的辛辣水抑制了阿曼海岸冷芯涡的上升流，较高的SST和高潜热通量几乎是阿曼海岸5月份气候值的两倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Atmosphere-Ocean 地学-海洋学

CiteScore

2.50

自引率

16.70%

发文量

审稿时长

>12 weeks

期刊介绍： Atmosphere-Ocean is the principal scientific journal of the Canadian Meteorological and Oceanographic Society (CMOS). It contains results of original research, survey articles, notes and comments on published papers in all fields of the atmospheric, oceanographic and hydrological sciences. Arctic, coastal and mid- to high-latitude regions are areas of particular interest. Applied or fundamental research contributions in English or French on the following topics are welcomed: climate and climatology; observation technology, remote sensing; forecasting, modelling, numerical methods; physics, dynamics, chemistry, biogeochemistry; boundary layers, pollution, aerosols; circulation, cloud physics, hydrology, air-sea interactions; waves, ice, energy exchange and related environmental topics.