DOI: 10.1002/joc.5215
论文题名: Ocean–atmosphere conditions related to severe and persistent droughts in the Mexican Altiplano
作者: Vega-Camarena J.P. ; Brito-Castillo L. ; Farfán L.M. ; Gochis D.J. ; Pineda-Martínez L.F. ; Díaz S.C.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 2 起始页码: 853
结束页码: 866
语种: 英语
英文关键词: Mexican Altiplano
; persistent drought
; severe drought
; standardized precipitation index
Scopus关键词: Atmospheric humidity
; Rain
; Stream flow
; Time series
; Time series analysis
; Atlantic multidecadal oscillations
; Atmospheric conditions
; Atmospheric pattern
; Mexican Altiplano
; Pacific decadal oscillation
; Positive rainfall anomalies
; Specific humidity
; Standardized precipitation index
; Drought
; air-sea interaction
; anticyclone
; Atlantic Multidecadal Oscillation
; drought
; La Nina
; Pacific Decadal Oscillation
; precipitation (climatology)
; rainfall
; time series
; Altiplano
; Mexico [North America]
; Pacific Coast [Mexico]
; Pacific Coast [North America]
; United States
英文摘要: Ocean and atmospheric patterns associated with the most severe and most persistent droughts in the Mexican Altiplano region are explored. The standardized precipitation index on a time scale of 12 months was used and compared with time series of other atmospheric conditions to identify major dry episodes from 1970 to 2012. The time series were derived from the second mode of a varimax-rotated empirical orthogonal functional analysis from the mean summer rainfall series observed at weather stations located in the Mexican Altiplano from 1970 through 2000. The results showed that the longest and most persistent episode occurred from 1998 through 2001, while the most severe dry episode occurred in 2011–2012, when the Pacific Decadal Oscillation was in a negative phase and the Atlantic Multidecadal Oscillation in a positive phase, both in combination with a La Niña event. A large upper-level anticyclone over the north-central United States is related to droughts in the Altiplano. Under these conditions, the droughts were linked to a large anticyclone positioned over the central-north of the United States, with consequent negative anomalies of specific humidity over central-northern Mexico. Concurrent with droughts in the interior of Mexico, are positive rainfall anomalies along the central Pacific coast of Mexico near the study area. Under different atmospheric conditions, opposite anomalous behaviour between the coast and interior can exist. The mechanism driving this see-saw behaviour between the west coast of Mexico and the Altiplano is explored. © 2017 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117091
Appears in Collections: 气候减缓与适应
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作者单位: Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Guaymas, Sonora, Mexico; Centro de Investigación Científica y de Educación Superior de Ensenada, La Paz B.C.S, Mexico; National Center for Atmospheric Research, Boulder, CO, United States; Universidad Autónoma de Zacatecas, Zacatecas, Mexico; Centro de Investigaciones Biológicas del Noroeste (CIBNOR), La Paz B.C.S, Mexico
Recommended Citation:
Vega-Camarena J.P.,Brito-Castillo L.,Farfán L.M.,et al. Ocean–atmosphere conditions related to severe and persistent droughts in the Mexican Altiplano[J]. International Journal of Climatology,2018-01-01,38(2)