气候变化领域集成服务门户(CCPortal): Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data

CCPortal

DOI	10.5194/tc-10-927-2016
	Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data
	Masiokas M.H.; Christie D.A.; Le Quesne C.; Pitte P.; Ruiz L.; Villalba R.; Luckman B.H.; Berthier E.; Nussbaumer S.U.; González-Reyes Á.; McPhee J.; Barcaza G.
发表日期	2016
ISSN	19940416
卷号	10 期号:2
英文摘要	Despite the great number and variety of glaciers in southern South America, in situ glacier mass-balance records are extremely scarce and glacier-climate relationships are still poorly understood in this region. Here we use the longest (> 35 years) and most complete in situ mass-balance record, available for the Echaurren Norte glacier (ECH) in the Andes at ∼33.5° S, to develop a minimal glacier surface mass-balance model that relies on nearby monthly precipitation and air temperature data as forcing. This basic model is able to explain 78% of the variance in the annual glacier mass-balance record over the 1978-2013 calibration period. An attribution assessment identified precipitation variability as the dominant forcing modulating annual mass balances at ECH, with temperature variations likely playing a secondary role. A regionally averaged series of mean annual streamflow records from both sides of the Andes between ∼30 and 37° S is then used to estimate, through simple linear regression, this glacier's annual mass-balance variations since 1909. The reconstruction model captures 68% of the observed glacier mass-balance variability and shows three periods of sustained positive mass balances embedded in an overall negative trend over the past 105 years. The three periods of sustained positive mass balances (centered in the 1920s-1930s, in the 1980s and in the first decade of the 21st century) coincide with several documented glacier advances in this region. Similar trends observed in other shorter glacier mass-balance series suggest that the Echaurren Norte glacier reconstruction is representative of larger-scale conditions and could be useful for more detailed glaciological, hydrological and climatological assessments in this portion of the Andes. © Author(s) 2016.
学科领域	air temperature; annual variation; calibration; climate cycle; climate forcing; glacier mass balance; in situ measurement; reconstruction; streamflow; Andes; South America
语种	英语
scopus关键词	air temperature; annual variation; calibration; climate cycle; climate forcing; glacier mass balance; in situ measurement; reconstruction; streamflow; Andes; South America
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119654
作者单位	Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA), CCT- CONICET Mendoza, C. C. 330, Mendoza, 5500, Argentina; Laboratorio de Dendrocronología y Cambio Global, Instituto de Conservación Biodiversidad y Territorio, Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, Valdivia, Chile; Center for Climate and Resilience Research (CR2), Santiago, Chile; Department of Geography, University of Western Ontario, London, Canada; LEGOS, CNRS, Université de Toulouse, Toulouse, France; Department of Geography, University of Zurich, Zurich, Switzerland; Department of Geosciences, University of Fribourg, Fribourg, Switzerland; Departamento de Geología, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile; Departamento de Ingeniería Civil, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile; Dirección General de Aguas (DGA), Santiago, Chile
推荐引用方式 GB/T 7714	Masiokas M.H.,Christie D.A.,Le Quesne C.,et al. Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data[J],2016,10(2).
APA	Masiokas M.H..,Christie D.A..,Le Quesne C..,Pitte P..,Ruiz L..,...&Barcaza G..(2016).Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data.Cryosphere,10(2).
MLA	Masiokas M.H.,et al."Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data".Cryosphere 10.2(2016).