厘清多尺度对流和环流特征在调节孟加拉湾热带气旋路径中的作用

IF 1.8 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS

Journal of Atmospheric and Solar-Terrestrial Physics Pub Date : 2024-07-09 DOI:10.1016/j.jastp.2024.106291

Mohan Murali Krishna Gorja , Naresh Krishna Vissa , Yesubabu Viswanadhapalli

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引用次数: 0

摘要

本研究分析了不同尺度的大气振荡对孟加拉湾热带气旋（TC）移动的影响。研究了季风前和季风后季节有热带气旋和无热带气旋时动态和热力学变量的综合分析。多尺度分析的综合特征清楚地表明，季风前的热带气旋路径主要由平均气候环境（CLM）和与副季节振荡相关的异常的净相互作用决定。而在后季风期，平均气候环境对风暴路径的影响至关重要。同样，该研究还表明，平均气候环境和副季节异常共同为各种热带气旋路径提供了指导作用。

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Untangling the role of convective and circulation features on multi-scales in modulating tracks of tropical cyclones formed over the Bay of Bengal

In this study, we analysed the influence of prevailing atmospheric oscillations at different scales on tropical cyclones (TC) movement over the Bay of Bengal. Composite analysis of dynamic and thermodynamic variables are investigated with and without TC during pre-monsoon and post-monsoon seasons. The composite features analysed at multi-scales clearly suggests that pre-monsoon TC track predominantly determine by a net interaction of mean climatology environment (CLM) and anomalies associated with sub-seasonal oscillations. Whereas, during post-monsoon CLM is critical in governing the storm track. Similarly, the study also signifies that CLM and sub-seasonal anomalies jointly provide guiding effect for various TC paths.

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来源期刊

Journal of Atmospheric and Solar-Terrestrial Physics 地学-地球化学与地球物理

CiteScore

4.10

自引率

5.30%

发文量

审稿时长

6 months

期刊介绍： The Journal of Atmospheric and Solar-Terrestrial Physics (JASTP) is an international journal concerned with the inter-disciplinary science of the Earth''s atmospheric and space environment, especially the highly varied and highly variable physical phenomena that occur in this natural laboratory and the processes that couple them. The journal covers the physical processes operating in the troposphere, stratosphere, mesosphere, thermosphere, ionosphere, magnetosphere, the Sun, interplanetary medium, and heliosphere. Phenomena occurring in other "spheres", solar influences on climate, and supporting laboratory measurements are also considered. The journal deals especially with the coupling between the different regions. Solar flares, coronal mass ejections, and other energetic events on the Sun create interesting and important perturbations in the near-Earth space environment. The physics of such "space weather" is central to the Journal of Atmospheric and Solar-Terrestrial Physics and the journal welcomes papers that lead in the direction of a predictive understanding of the coupled system. Regarding the upper atmosphere, the subjects of aeronomy, geomagnetism and geoelectricity, auroral phenomena, radio wave propagation, and plasma instabilities, are examples within the broad field of solar-terrestrial physics which emphasise the energy exchange between the solar wind, the magnetospheric and ionospheric plasmas, and the neutral gas. In the lower atmosphere, topics covered range from mesoscale to global scale dynamics, to atmospheric electricity, lightning and its effects, and to anthropogenic changes.