DOI: 10.1175/JCLI-D-14-00243.1
Scopus记录号: 2-s2.0-84944080653
论文题名: Investigation of climatological onset and withdrawal of the rainy season in Panama based on a daily gridded precipitation dataset with a high horizontal resolution
作者: Nakaegawa T. ; Arakawa O. ; Kamiguchi K.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 7 起始页码: 2745
结束页码: 2763
语种: 英语
Scopus关键词: Climatology
; Geographical regions
; Precipitation (chemical)
; Rain
; Central America
; Climate classification/regimes
; Daily precipitations
; Geographical features
; Geographical patterns
; Horizontal resolution
; Intertropical convergence zone
; Seasonal cycle
; Precipitation (meteorology)
; climate classification
; climatology
; data set
; humidity
; intertropical convergence zone
; precipitation assessment
; rainfall
; resolution
; seasonal variation
; topographic effect
; water vapor
; Caribbean Coast [Panama]
; Los Santos [Panama]
; Panama [Central America]
英文摘要: The present study investigated the onset and withdrawal dates of the rainy season in Panama by using newly developed, gridded, daily precipitation datasets with a high horizontal resolution of 0.05° based on ground precipitation observations. The onset and withdrawal dates showed very complicated geographical features, although the country of Panama is oriented parallel to latitude lines, and the geographical patterns of the onset and withdrawal dates could simply reflect the latitudinal migration of the intertropical convergence zone, as seen in other regions and countries. An absolute threshold value of 3 mm day-1 (pentad mean precipitation) was used to determine the onset and withdrawal dates. The onset and withdrawal dates obtained from the gridded daily precipitation dataset clearly depicted the migration of the rainy season. The rainy season starts suddenly in pentad 21 (11-15 April) in most of eastern Panama and in pentad 22 (16-20 April) in most of western Panama. The termination of the rainy season begins in Los Santos Province during pentad 67 (27 November-1 December) and expands to both the eastern and western surrounding areas. There is no dry season in the western part of the Caribbean coastal zone. Water vapor fluxes and topography suggest dynamical causes, such as a topographically induced upward mass flux accompanied by high humidity, for the complicated geographical features of the onset and withdrawal dates. An assessment was made of uncertainties in the timing of the onset and withdrawal associated with the definition of these terms. © 2015 American Meteorological Society. 资助项目: JSPS, Japan Society for the Promotion of Science
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50774
Appears in Collections: 气候变化事实与影响
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作者单位: Climate Research Department, Meteorological Research Institute, Tsukuba, Japan
Recommended Citation:
Nakaegawa T.,Arakawa O.,Kamiguchi K.. Investigation of climatological onset and withdrawal of the rainy season in Panama based on a daily gridded precipitation dataset with a high horizontal resolution[J]. Journal of Climate,2015-01-01,28(7)