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globalchange > 过去全球变化的重建

DOI:	10.1371/journal.pone.0090276
论文题名:	Twelve Years of Change in Coastal Upwelling along the Central-Northern Coast of Chile: Spatially Heterogeneous Responses to Climatic Variability
作者:	Guillermo Aravena; Bernardo Broitman; Nils Christian Stenseth
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-2-28
卷:	9, 期:2
英文关键词:	Chile (country) ; Surface temperature ; Oceanography ; El Niño-Southern Oscillation ; Summer ; Latitude ; Seasons ; Ocean temperature
英文摘要:	We use time-series analyses to characterize the effects of recent climate variability upon the local physical conditions at 11 study sites along the northern-central coast of Chile (29–34°S). Environmental indices show that the 1° Bakun upwelling index in this coastal region has fluctuated in time, starting from a stable period around the 1980's, peaking during the mid 90s, decreasing during the next ten years and increasing at a steep rate since 2010. Upwelling intensity decreased with increasing latitude, showing also a negative correlation with climate patterns (El Niño3 sea surface temperature-SST anomalies and the Multivariate El Niño Index). We hypothesize that the impacts of climate variability on upwelling events seem to be spatially heterogeneous along the region. Non-sheltered locations and, particularly, sites on prominent headlands show an immediate (lag = 0) and negative correlation between local SST, upwelling events and wind stress. We suggest that near-shore thermal conditions are closely coupled to large-scale forcing of upwelling variability and that this influence is modulated through local topographic factors.
URL:	http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0090276
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/14491
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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作者单位:

Centro de Estudios Avanzados en Zonas Áridas, Facultad Ciencias del Mar, Universidad Católica del Norte, Coquimbo, Chile

Recommended Citation:

Guillermo Aravena,Bernardo Broitman,Nils Christian Stenseth. Twelve Years of Change in Coastal Upwelling along the Central-Northern Coast of Chile: Spatially Heterogeneous Responses to Climatic Variability[J]. PLOS ONE,2014-01-01,9(2)

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