DOI: 10.5194/tc-7-103-2013
Scopus记录号: 2-s2.0-84873853429
论文题名: Glacier changes and climate trends derived from multiple sources in the data scarce Cordillera Vilcanota region, southern Peruvian Andes
作者: Salzmann N ; , Huggel C ; , Rohrer M ; , Silverio W ; , Mark B ; G ; , Burns P ; , Portocarrero C
刊名: Cryosphere
ISSN: 19940416
出版年: 2013
卷: 7, 期: 1 起始页码: 103
结束页码: 118
语种: 英语
英文关键词: air temperature
; climate change
; climate conditions
; glacier dynamics
; glacier retreat
; humidity
; regional climate
; reservoir
; runoff
; satellite imagery
; spatial variation
; temporal variation
; topography
; trend analysis
; troposphere
; Andes
; Cordillera de Vilcanota
; Cordillera Oriental [Peru]
; Cuzco [Peru]
; Peru
英文摘要: The role of glaciers as temporal water reservoirs is particularly pronounced in the (outer) tropics because of the very distinct wet/dry seasons. Rapid glacier retreat caused by climatic changes is thus a major concern, and decision makers demand urgently for regional/local glacier evolution trends, ice mass estimates and runoff assessments. However, in remote mountain areas, spatial and temporal data coverage is typically very scarce and this is further complicated by a high spatial and temporal variability in regions with complex topography. Here, we present an approach on how to deal with these constraints. For the Cordillera Vilcanota (southern Peruvian Andes), which is the second largest glacierized cordillera in Peru (after the Cordillera Blanca) and also comprises the Quelccaya Ice Cap, we assimilate a comprehensive multi-decadal collection of available glacier and climate data from multiple sources (satellite images, meteorological station data and climate reanalysis), and analyze them for respective changes in glacier area and volume and related trends in air temperature, precipitation and in a more general manner for specific humidity. While we found only marginal glacier changes between 1962 and 1985, there has been a massive ice loss since 1985 (about 30% of area and about 45% of volume). These high numbers corroborate studies from other glacierized cordilleras in Peru. The climate data show overall a moderate increase in air temperature, mostly weak and not significant trends for precipitation sums and probably cannot in full explain the observed substantial ice loss. Therefore, the likely increase of specific humidity in the upper troposphere, where the glaciers are located, is further discussed and we conclude that it played a major role in the observed massive ice loss of the Cordillera Vilcanota over the past decades. © Author(s) 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75009
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Geography, University of Zurich, Zurich, Switzerland; Department of Geosciences, University of Fribourg, Fribourg, Switzerland; Meteodat GmbH, Technoparkstrasse 1, Zurich, Switzerland; Institute for Environmental Science, Climate Ch Ange and Climate Impact Group, University of Geneva, Geneva, Switzerland; Department of Geography, Ohio State University, Columbus OH, United States; College of Earth, Ocean and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States; Independent Consultant, Huaraz, Peru; Unidad de Glaciología y Recursos Hídricos, Autoridad Nacional de Agua, Huaraz, Peru
Recommended Citation:
Salzmann N,, Huggel C,, Rohrer M,et al. Glacier changes and climate trends derived from multiple sources in the data scarce Cordillera Vilcanota region, southern Peruvian Andes[J]. Cryosphere,2013-01-01,7(1)