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Influence of Boreal Sudden Stratospheric Warming On Northern Hemispheric Tropical Troposphere

机译：北方平流层突然变暖对北半球热带对流层的影响

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During winter, the temperature in the polar stratosphere suddenly rises by 30 -50° C and the prevailing westerly wind become weaker and often changes its direction to easterly within a time span of few days is known as the Sudden Stratospheric Warming (SSW) event. This study demonstrates the variability over northern hemispheric tropical troposphere during boreal sudden stratospheric warming. The study confirm an enhancement in the convective activity in the latitude zone 0-10° N associated with SSW. The convective activity over the study region during the major SSW period indicates strong interactions between stratosphere and troposphere. During the major SSW, there is an abrupt increase in surface temperature over the tropics. The tropical surface temperature is seen to be negatively correlated with the tropical stratosphere temperature and an upward motion of air creates a convective cell over the study region. A change in circulation in the upper troposphere with a zonal wind reversal from westerly to easterly related to SSW has also been verified using the Stratosphere Troposphere (ST) wind profiler radar operating at 205 MHz is operational at the Advanced Centre for Atmospheric Radar Research, Cochin University of Science and Technology, Cochin (10° 2 'N 76° 20' B), India.
机译：在冬季，极地平流层的温度突然升高30 -50°C，盛行的西风变弱，并且通常在几天的时间间隔内将其方向改变为东风，这被称为“平流层突然变暖”（SSW）事件。这项研究证明了北半球热带对流层在北平流层突然变暖期间的变化。该研究证实，与南太平洋相关的0-10°N纬度区域的对流活动增强。在南半球主要时段，研究区域内的对流活动表明平流层和对流层之间有很强的相互作用。在主要的南半球期间，热带地区的地表温度突然升高。热带表面温度被认为与热带平流层温度负相关，空气的向上运动在研究区域上方形成了一个对流单元。使用在205 MHz下运行的平流层对流层（ST）风廓线雷达已在科钦高级大气研究中心工作，验证了对流层上层环流的变化以及与SSW相关的纬向风从西风向东风的逆转。印度科钦科技大学（10°2'N 76°20'B）。

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