DOI: 10.1016/j.atmosres.2018.03.008
Scopus记录号: 2-s2.0-85045025882
论文题名: The added value of IMERG in characterizing rainfall in tropical cyclones
作者: Rios Gaona M.F. ; Villarini G. ; Zhang W. ; Vecchi G.A.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 209 起始页码: 95
结束页码: 102
语种: 英语
英文关键词: IMERG
; Rainfall
; Tropical cyclones
Scopus关键词: Hurricanes
; Soil moisture
; Storms
; Tropics
; Global precipitation measurement missions
; IMERG
; Landfalling tropical cyclones
; Rainfall intensity
; Rainfall structures
; Satellite retrieval
; Spatio-temporal resolution
; Tropical cyclone
; Rain
; precipitation intensity
; rainfall
; storm track
; tropical cyclone
英文摘要: Heavy rainfall associated with landfalling tropical cyclones (TCs) is responsible for significant societal and economic impacts. Improved characterization and description of how rainfall during these storms changes as a function of distance from the center of circulation are critical to increase our preparedness against this natural hazard. Since March 2014, the hydrometeorological community has benefitted from the Global Precipitation Measurement mission (GPM), especially with its gridded-rainfall product IMERG (Integrated Multi-satellitE Retrievals for GPM), which offers global rainfall estimates with a spatiotemporal resolution of 0.1°×0.1° every 30 min, on a near-real time basis. We analyze here 166 TCs worldwide from March 2014 through March 2016. For every TC, we extract from IMERG V04 a 2000 km rainfall swath along the TC track. This allows us to characterize with great accuracy the spatial structure of TC-rainfall, from its development all the way to its landfall and dissipation. We stratify the analyses by basin of origin, intensity of the storm, and whether the TC was over ocean or land. We find that the South Pacific, West Pacific, and North Indian basins yield (median) rainfall intensities between 6 and 7.5 mm⋅h−1 at radii ∼50 km. These intensities are for TCs over ocean, and in most cases they are twice (or more) as high as the median intensities for TCs over land (∼3.0 mm⋅h−1). For the North Atlantic, South Indian, and East Pacific basins the oceanic (median) rainfall intensities are between 4 and 5 mm⋅h−1. Upscaled IMERG estimates (0.25°×0.25° every 3 h) do not capture the rainfall structure within the eyewall (i.e., for radii < 50 km), especially for the South Pacific, West Pacific, and North Indian basins. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108856
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: IIHR - Hydroscience & Engineering, The University of Iowa, Iowa City, Iowa, United States; Department of Geosciences, Princeton University, Princeton, New Jersey, United States; Princeton Environmental Institute, Princeton University, Princeton, New Jersey, United States
Recommended Citation:
Rios Gaona M.F.,Villarini G.,Zhang W.,et al. The added value of IMERG in characterizing rainfall in tropical cyclones[J]. Atmospheric Research,2018-01-01,209