DOI: 10.3354/cr01538
Scopus记录号: 2-s2.0-85056281844
论文题名: Contrasting rainfall behavior between the Pacific coast and the Mexican Altiplano
作者: Vega-Camarena J.P. ; Brito-Castillo L. ; Farfán L.M.
刊名: Climate Research
ISSN: 0936577X
出版年: 2018
卷: 76, 期: 3 起始页码: 225
结束页码: 240
语种: 英语
英文关键词: Mesoscale convective systems
; Mexican Altiplano
; Pacific coast
; Rainfall
Scopus关键词: convective system
; drought
; environmental conditions
; precipitation (climatology)
; rainfall
; river basin
; weather station
; Altiplano
; Mexico [North America]
; Nayarit
; Pacific Coast [Mexico]
; Pacific Coast [North America]
; San Pedro Basin [(RVB) North America]
英文摘要: Summer rainfall along the coast Nayarit, Mexico, behaves in a contrasting way to rainfall ob served on the Mexican Altiplano. The mechanism for this behavior originates in the wind flow and moisture content of the atmospheric column. By using field observations from 2015, this study analyzed wind and rainfall characteristics in the interior of the San Pedro-Mezquital river basin, which connects the Pacific coast and the Mexican Altiplano. At the surface, the characteristics of humidity transport that explain rainfall in one region hinder its transport to the other. This has not been previously documented. We further analyzed different scenarios with sets of daily data, using composite maps of average wind and specific humidity at 500, 700, and 1000 hPa to explain these anomalies. In 2015, a pattern resembling the midsummer drought occurred at a weather station located on the coast. The corresponding time series of precipitation, which was derived from an analysis of orthogonal empirical functions with varimax axis rotation, showed that from 1970-2012, there were 3 years (1978, 2000, and 2002) with droughts. The mechanism that caused this behavior originates in the gap in the occurrence of mesoscale convective systems (MCSs), with environmental conditions that provide more convection and enhanced rainfall in September over coastal areas. The September rainfall in these 3 years contrasts that over the Mexican Altiplano, giving more evidence of a seesaw rainfall pattern between these 2 regions. © The authors 2018. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116246
Appears in Collections: 气候减缓与适应
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Recommended Citation:
Vega-Camarena J.P.,Brito-Castillo L.,Farfán L.M.. Contrasting rainfall behavior between the Pacific coast and the Mexican Altiplano[J]. Climate Research,2018-01-01,76(3)