DOI: 10.1007/s11069-019-03633-0
论文题名: Prediction of extreme rainfall associated with monsoon depressions over Odisha: an assessment of coastal zone vulnerability at district level
作者: Swain M. ; Pattanayak S. ; Mohanty U.C. ; Sahu S.C.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 102, 期: 2 起始页码: 607
结束页码: 632
语种: 英语
中文关键词: Indian summer monsoon
; Monsoon depression
; Odisha
; Rainfall vulnerability index
; WRF
英文关键词: climatology
; coastal zone
; extreme event
; monsoon
; precipitation intensity
; prediction
; rainfall
; relative humidity
; vorticity
; vulnerability
; weather forecasting
; India
; Odisha
英文摘要: The present study investigates the climatological rainfall vulnerability districts associated with monsoon depressions (MDs) over Odisha using both observational and modeling perspectives for a period of 34 years (1980–2013). Four heavy rainfall cases associated with MDs crossed Odisha are simulated with the help of high-resolution advanced research weather research forecasting system, and the rainfall vulnerability mapping for more than 1-mm rainfall values at district level are evaluated. The observational analyses on the frequency of MDs for the study period exhibit a decreasing trend. It is noticed that the rainfall vulnerability districts are present to the left side of the track of the MDs. The model simulation result depicts that the location of formation of MDs is always behind the actual position of the system and also do the landfall after the actual time. The model has a positive bias in the prediction of the intensity of rainfall and a spatial shift in the distribution of rainfall. The model is showing higher Heidke skill for less intensity rainfall threshold values. The analysis also suggests that the maximum rainfall vulnerable districts are present 150–200 km away from the original position, still these districts are present to the left side of the MDs. Analysis on the horizontal and vertical structure of MD suggests that the presence of relative humidity is less in WRF and the distribution of relative vorticity is not same as the observation, which may be the major causes of having such error in predicting heavy rainfall. © 2019, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168760
Appears in Collections: 气候变化与战略
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作者单位: School of Earth, Ocean and Climate Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar, India; National Centre for Medium Range Weather Forecasting, Noida, India; India Meteorological Department, Bhubaneswar, India
Recommended Citation:
Swain M.,Pattanayak S.,Mohanty U.C.,et al. Prediction of extreme rainfall associated with monsoon depressions over Odisha: an assessment of coastal zone vulnerability at district level[J]. Natural Hazards,2020-01-01,102(2)