DOI: 10.1007/s11069-020-04357-2
论文题名: An accentuated “hot blob” over Vidarbha, India, during the pre-monsoon season
作者: Naveena N. ; Satyanarayana G.C. ; Rao D.V.B. ; Srinivas D.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 105, 期: 2 起始页码: 1359
结束页码: 1373
语种: 英语
中文关键词: Climate model
; Hot blob
; Indian subcontinent
; Pre-monsoon season
英文关键词: air temperature
; climate modeling
; heat wave
; monsoon
; spatial distribution
; wind-driven circulation
; India
; Maharashtra
; Vidarbha
英文摘要: A “hot blob”, distinct hot region, is identified over Vidarbha in the south-central parts of the Indian subcontinent during the pre-monsoon season from the analysis of gridded surface air maximum temperature data from India Meteorological Department for the period 1951–2019. Spatial distribution and frequencies of temperatures > 40 °C and > 42 °C establish the hot blob over Vidarbha region. A similar analysis of simulated maximum temperatures from the NEX-GDDP substantiates the revelation of the “hot blob” over Vidarbha. Further, analysis of the wind circulation at 850 hPa over South Asia region indicates that the “COL” region between the two seasonal high-pressure systems over the Indian Ocean seas, Bay of Bengal and Arabian Sea promotes accumulation of heat over Vidarbha. Further, horizontal temperature convergence complimented by strong local heating of the black soil aids and abets the sustenance of the “hot blob”. This “hot blob” region is observed to be hotter as well as having higher frequencies of hot days than the north-west desert Rajasthan region and assumes importance as its modulation causes heatwaves over the south-east coastal regions. This study establishes the presence of the hottest region over Vidarbha in south-central parts, paradoxically hotter than the desert north-west region of India. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169248
Appears in Collections: 气候变化与战略
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作者单位: Center for Atmospheric Science, K L University, Green Fields, Vaddeswaram, Andhra Pradesh 522502, India; Department of Meteorology and Oceanography, Andhra University, Visakhapatnam, Andhra Pradesh 530003, India; National Centre for Medium Range Weather Forecasting (NCMRWF), Ministry of Earth Sciences, A-50, Sector-62, Noida, India
Recommended Citation:
Naveena N.,Satyanarayana G.C.,Rao D.V.B.,et al. An accentuated “hot blob” over Vidarbha, India, during the pre-monsoon season[J]. Natural Hazards,2021-01-01,105(2)