DOI: 10.1016/j.gloplacha.2015.08.009
论文题名: Mass loss and imbalance of glaciers along the Andes Cordillera to the sub-Antarctic islands
作者: Mernild S.H. ; Beckerman A.P. ; Yde J.C. ; Hanna E. ; Malmros J.K. ; Wilson R. ; Zemp M.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2015
卷: 133 起始页码: 109
结束页码: 119
语种: 英语
英文关键词: Accumulation area ratio
; EOF
; Glaciers
; Imbalance
; Mass-balance observations
; South America
; Sub-Antarctic islands
Scopus关键词: Atmospheric pressure
; Glaciers
; Area ratios
; EOF
; Imbalance
; Mass balance
; South America
; Sub-Antarctic islands
; Orthogonal functions
; El Nino-Southern Oscillation
; geoaccumulation
; glacier mass balance
; Pacific Decadal Oscillation
; spatiotemporal analysis
; Andes
; Antarctica
; Cordillera
; Paraguay
英文摘要: Here, we examine available glacier mass-balance records between 1993 and 2012 for Andes Cordillera, South America (6.5°N-45.8°S), and the sub-Antarctic islands around the northern tip of the Antarctic Peninsula (62.7°S-63.8°S) to determine their recent mass loss and imbalance with the present climate. The mean annual observed mass-balance Ba changed from -620±390 (1993-2002) to -740±240kgm-2yr-1 (2003-2012) and for this past decade showed a decrease in Ba from south to north. These glaciers had a mean accumulation area ratio of 0.42, which is below the AAR value for glaciers in equilibrium, reflecting mean area and volume imbalances of 23% and 27%, respectively. Glaciers in the northern part of Andes Cordillera are most out of balance with the present climate (33%), while glaciers on the sub-Antarctic islands are only slightly out of balance (4%). We identified a spatiotemporal cycle of Ba that distinguishes glaciers on the sub-Antarctic islands from glaciers in the Andes using an Empirical Orthogonal Function analysis. This analysis also revealed that South America should be divided into three individual glacier regions, and not two regions as earlier stated. Overall, the spatiotemporal cycles identified correlate to the multivariate El Niño Southern Oscillation Index instantaneously (zero-year lag-time) and to the Pacific Decadal Oscillation with an approximately eight-year lag-time. © 2015 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84939646007&doi=10.1016%2fj.gloplacha.2015.08.009&partnerID=40&md5=ab61abedb9fe86bc2ea9d2ad6bc66e8b
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11494
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
There are no files associated with this item.
作者单位: Glaciology and Climate Change Laboratory, Center for Scientific Studies/Centro de Estudios Cientificos (CECs), Chile
Recommended Citation:
Mernild S.H.,Beckerman A.P.,Yde J.C.,et al. Mass loss and imbalance of glaciers along the Andes Cordillera to the sub-Antarctic islands[J]. Global and Planetary Change,2015-01-01,133.