DOI: 10.1007/s00382-014-2114-8
Scopus记录号: 2-s2.0-84896421892
论文题名: Combined influence of PDO and ENSO on northern Andean glaciers: a case study on the Cotopaxi ice-covered volcano, Ecuador
作者: Veettil B.K. ; Leandro Bayer Maier É. ; Bremer U.F. ; de Souza S.F.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 43, 期: 12 起始页码: 3439
结束页码: 3448
语种: 英语
英文关键词: Andean glaciers
; Cotopaxi
; ENSO
; Mountain glaciers
; PDO
; Precipitation
英文摘要: This paper describes the application of remote sensing in monitoring the fluctuations in one of the mountain glaciers in the Ecuadorean Andes during the past few decades using ASTER, EO-1 ALI, Landsat MSS, TM and ETM + images. Satellite images were used to calculate the snow line altitudes (SLAs) during the period 1979–2013. Cotopaxi ice covered volcano was studied as representative of Ecuadorian glaciers in the eastern cordillera. Precipitation and air temperature data from various gauging stations within the range of 30 km from the study site and monthly discharge and water level data from a gauging station were also utilized in this study. Anomalies in precipitation and temperature were found to be slightly different in the Cotopaxi region compared to nearby Antizana in the same cordillera and Chimborazo region in the western cordillera. An attempt to correlate the El Niño—southern oscillation phenomenon with the glacier fluctuations in Ecuadorian Andes was done successfully. Cold and warm regimes of Pacific Decadal Oscillation is also considered. The calculated glacier fluctuations obtained were similar to that performed on the nearby Antizana 15 in the eastern cordillera during 1995–2002. Precipitation and temperature anomalies were similar with Antizana 15. It is evident from the research that SLAs were highly fluctuated between the period of occurrence of El Niño and La Niña events. It is also seen that the glacier fluctuations show a negative mass balance trend in during the warm regime of Pacific Decadal Oscillation during the past three decades. Glaciated areas were advanced during the La Nina events in the cold regime of PDO during 1998–2002. © 2014, Springer-Verlag Berlin Heidelberg. 资助项目: FAPERGS, Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54448
Appears in Collections: 过去全球变化的重建
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作者单位: Centro Estadual de Pesquisas em Sensoriamento Remoto e Meteorologia (CEPSRM), Federal University of Rio Grande do Sul (UFRGS), Campus do Vale, Av. Bento Gonçalves, 9500, CEP, Porto Alegre, Rio Grande do Sul, Brazil; Centro Polar e Climático, Federal University of Rio Grande do Sul (UFRGS), Campus do Vale, Av. Bento Gonçalves, 9500, CEP, Porto Alegre, Rio Grande do Sul, Brazil; Institute of Geosciences, Federal University of Rio Grande do Sul (UFRGS), Campus do Vale, Av. Bento Gonçalves, 9500, CEP, Porto Alegre, Rio Grande do Sul, Brazil
Recommended Citation:
Veettil B.K.,Leandro Bayer Maier É.,Bremer U.F.,et al. Combined influence of PDO and ENSO on northern Andean glaciers: a case study on the Cotopaxi ice-covered volcano, Ecuador[J]. Climate Dynamics,2014-01-01,43(12)