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DOI | 10.5194/acp-19-10423-2019 |
Variability in vertical structure of precipitation with sea surface temperature over the Arabian Sea and the Bay of Bengal as inferred by Tropical Rainfall Measuring Mission precipitation radar measurements | |
Saikranthi, Kadiri1; Radhakrishna, Basivi2; Rao, Thota Narayana2; Satheesh, Sreedharan Krishnakumari3 | |
2019-08-15 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:15页码:10423-10432 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | Tropical Rainfall Measuring Mission (TRMM) precipitation radar measurements are used to examine the variation in vertical structure of precipitation with sea surface temperature (SST) over the Arabian Sea (AS) and Bay of Bengal (BOB). The variation in reflectivity and precipitation echo top with SST is remarkable over the AS but small over the BOB. The reflectivity increases with SST (from 26 to 31 degrees C) by similar to 1 and 4 dBZ above and below 6 km, respectively, over the AS, while its variation is < 0.5 dBZ over the BOB. The transition from shallow storms at lower SSTs (<= 27 degrees C) to deeper storms at higher SSTs is strongly associated with the decrease in stability and mid-tropospheric wind shear over the AS. In contrary, the storms are deeper at all SSTs over the BOB due to weaker stability and mid-tropospheric wind shear. At lower SSTs, the observed high aerosol optical depth (AOD) and low total column water (TCW) over AS results in the small cloud effective radius (CER) and weaker reflectivity. As SST increases, AOD decreases and TCW increases, leading to a large CER and high reflectivity. The changes in these parameters with SST are marginal over the BOB and hence the CER and reflectivity. The predominance of collision-coalescence process below the bright band is responsible for the observed negative slopes in the reflectivity over both the seas. The observed variations in reflectivity originate at the cloud formation stage over both the seas, and these variations are magnified during the descent of hydrometeors to the ground. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000481727300005 |
WOS关键词 | SUMMER MONSOON ; CLOUD MICROPHYSICS ; OCEAN ; CONVECTION ; ALGORITHM ; SST ; SYSTEMS ; ORGANIZATION ; PERFORMANCE ; ATMOSPHERE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185974 |
专题 | 地球科学 |
作者单位 | 1.IISER, Dept Earth & Climate Sci, Tirupati 517507, Andhra Pradesh, India; 2.Govt India, Dept Space, Natl Atmospher Res Lab, Gadanki 517112, India; 3.Indian Inst Sci, Ctr Atmospher & Ocean Sci, Divecha Ctr Climate Change, Bangalore 560012, Karnataka, India |
推荐引用方式 GB/T 7714 | Saikranthi, Kadiri,Radhakrishna, Basivi,Rao, Thota Narayana,et al. Variability in vertical structure of precipitation with sea surface temperature over the Arabian Sea and the Bay of Bengal as inferred by Tropical Rainfall Measuring Mission precipitation radar measurements[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(15):10423-10432. |
APA | Saikranthi, Kadiri,Radhakrishna, Basivi,Rao, Thota Narayana,&Satheesh, Sreedharan Krishnakumari.(2019).Variability in vertical structure of precipitation with sea surface temperature over the Arabian Sea and the Bay of Bengal as inferred by Tropical Rainfall Measuring Mission precipitation radar measurements.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(15),10423-10432. |
MLA | Saikranthi, Kadiri,et al."Variability in vertical structure of precipitation with sea surface temperature over the Arabian Sea and the Bay of Bengal as inferred by Tropical Rainfall Measuring Mission precipitation radar measurements".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.15(2019):10423-10432. |
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