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| DOI | 10.1016/j.dynatmoce.2020.101195 |
| Climatic analysis of tropopause during the northwestern Indian Ocean tropical cyclones | |
| Pegahfar N. | |
| 发表日期 | 2021 |
| ISSN | 03770265 |
| 卷号 | 93 |
| 英文摘要 | In this research, tropopause temperature (TT) and tropopause geopotential height (TGH) over the inner-core and environmental regions of all tropical cyclones (TCs) over the northwest of the Indian Ocean (NWIO) from 1990 to 2019 were investigated. To this aim, observational/analysis/reanalysis data and also simulated data from both historical and Representative Concentration Pathway 8.5 (RCP8.5) experiments of some global climate models (GCMs) from the Coupled Model Intercomparision Project (CMIP5) were used. Dynamical and thermo-dynamical environmental factors controlling TC, together with their correlation with different phases of some climatic indices were considered. Results indicated that the eastern part of the NWIO was more favorable for TC genesis and intensification. Lower-level stratospheric (upper-level tropospheric) cooling (warming) was detected over the NWIO during 1990−2019. Over the both inner-core and environmental regions of the NWIO TCs, the coldest tropopause occurred at a CS-Category and the warmest tropopause happened at the first stage of a VSCS event. Over the inner-core (environmental) region, the highest tropopause was detected at the first stage of a CS event (at the end of a VSCS life cycle). A significant majority of the used CMIP5 GCMs produced stratospheric cooling and tropospheric warming trends over the NWIO, similar to those obtained using ERA5 reanalysis dataset. Finally, the decreasing trend of TT over the both inner-core and environmental regions of NWIO TCs together with temperature decreasing trend obtained from the CMIP5 GCMs simulations suggest that the NWIO is prone to experience more TCs, especially the intense ones, in the future. © 2020 Elsevier B.V. |
| 英文关键词 | CMIP5 GCMs; Northwest of the Indian Ocean; Tropical cyclone; Tropopause |
| 语种 | 英语 |
| scopus关键词 | Clouds; Hurricanes; Storms; Tropics; Troposphere; Climatic analysis; Climatic index; Coupled modeling; Environmental factors; Geo-potential heights; Global climate model; Tropical cyclone; Tropospheric warming; Climate models; air-sea interaction; climate modeling; global climate; inner core; trend analysis; tropical cyclone; tropopause; Indian Ocean |
| 来源期刊 | Dynamics of Atmospheres and Oceans
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/178268 |
| 作者单位 | Iranian National Institute for Oceanography and Atmospheric Science, Iran |
| 推荐引用方式 GB/T 7714 | Pegahfar N.. Climatic analysis of tropopause during the northwestern Indian Ocean tropical cyclones[J],2021,93. |
| APA | Pegahfar N..(2021).Climatic analysis of tropopause during the northwestern Indian Ocean tropical cyclones.Dynamics of Atmospheres and Oceans,93. |
| MLA | Pegahfar N.."Climatic analysis of tropopause during the northwestern Indian Ocean tropical cyclones".Dynamics of Atmospheres and Oceans 93(2021). |
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