DOI: 10.1002/joc.5493
论文题名: An index of coastal thermal effects of El Niño Southern Oscillation on the Peruvian Upwelling Ecosystem
作者: Quispe-Ccalluari C. ; Tam J. ; Demarcq H. ; Chamorro A. ; Espinoza-Morriberón D. ; Romero C. ; Dominguez N. ; Ramos J. ; Oliveros-Ramos R.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 7 起始页码: 3191
结束页码: 3201
语种: 英语
英文关键词: coastal index
; ENSO
; Equatorial Pacific Ocean
; Peruvian Upwelling Ecosystem
Scopus关键词: Atmospheric pressure
; Climatology
; Ecosystems
; Surface waters
; coastal index
; ENSO
; Equatorial Pacific Ocean
; Geographical locations
; Interannual climate variability
; Low-frequency components
; Pacific decadal oscillation
; Sea surface temperature anomalies
; Oceanography
; air-sea interaction
; annual variation
; climate variation
; coastal zone
; El Nino-Southern Oscillation
; Pacific Decadal Oscillation
; sea surface temperature
; temperature anomaly
; temperature effect
; upwelling
; Pacific Ocean
; Pacific Ocean (Equatorial)
; Peru
英文摘要: The Peruvian Upwelling Ecosystem (PUE) is one of the most productive ecosystem in the world in terms of productivity and fish catches, partly because its geographical location is affected by remote physical processes, such as the interannual climate variability of the Equatorial Pacific Ocean (EPO), whose dominant signal is El Niño Southern Oscillation (ENSO). In order to assess the thermal effects of ENSO off Peru, a Peruvian Coastal Thermal Index (PCTI) was developed representing 87.7% of the total variation of the Sea Surface Temperature (SST) anomalies of the PUE. Between 1982 and 2014, the PCTI detected 12 warm periods and 16 cold periods in the PUE. PCTI had a linear trend component, a low frequency component and a noise component, with 1.5%, 94.5% and 4% contributions to the total variance, respectively. Wavelet analysis of PCTI showed significant peaks of variability between the years 1996 and 1999 between periods of 0.4 and 6 years. A regime shift in variance of PCTI was detected in 1999, with a lower variance between 1999 and 2014 than between 1982 and 1998, which agreed with the start of a cold phase of the Pacific Decadal Oscillation. The decrease of variance of the PCTI could be linked to an increase of the local winds associated with a higher intensity of the average state of South Pacific Anticyclone. This atmospheric change might have strengthened the coastal upwelling and counteracted the intensity of warm periods in the PUE. Finally, the comparison of different indexes allowed to detect four periods where neutral conditions occurred in the EPO while warm periods occurred in the PUE (1993, 2008, 2012 and 2014); and 1 period where a warm episode occurred in the EPO (2004–2005) while a neutral condition occurred in the PUE. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116869
Appears in Collections: 气候减缓与适应
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作者单位: Laboratorio de Modelado Oceanográfico, Ecosistémico y del Cambio Climático (LMOECC), Instituto del Mar del Perú, Callao, Peru; Laboratorio de Hidrofísica Marina (LHM), Instituto del Mar del Perú, Callao, Peru; Institut de Recherche pour le Développement, UMR MARBEC (IRD, Ifremer, Université de Montpellier, CNRS), Sète, 34200, France
Recommended Citation:
Quispe-Ccalluari C.,Tam J.,Demarcq H.,et al. An index of coastal thermal effects of El Niño Southern Oscillation on the Peruvian Upwelling Ecosystem[J]. International Journal of Climatology,2018-01-01,38(7)