{"title":"Untangling the role of convective and circulation features on multi-scales in modulating tracks of tropical cyclones formed over the Bay of Bengal","authors":"Mohan Murali Krishna Gorja , Naresh Krishna Vissa , Yesubabu Viswanadhapalli","doi":"10.1016/j.jastp.2024.106291","DOIUrl":null,"url":null,"abstract":"<div><p>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.</p></div>","PeriodicalId":15096,"journal":{"name":"Journal of Atmospheric and Solar-Terrestrial Physics","volume":null,"pages":null},"PeriodicalIF":1.8000,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Atmospheric and Solar-Terrestrial Physics","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1364682624001196","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
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.
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.
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