Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data
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, a...
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Online Access: | https://doi.org/10.5194/tc-10-927-2016 http://www.the-cryosphere.net/10/927/2016/tc-10-927-2016.pdf https://doaj.org/article/12d0f58161ad4c5ab3dec3c208b1e2cb |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:12d0f58161ad4c5ab3dec3c208b1e2cb 2023-05-15T18:32:22+02:00 Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data M. H. Masiokas D. A. Christie C. Le Quesne P. Pitte L. Ruiz R. Villalba B. H. Luckman E. Berthier S. U. Nussbaumer Á. González-Reyes J. McPhee G. Barcaza 2016-04-01 https://doi.org/10.5194/tc-10-927-2016 http://www.the-cryosphere.net/10/927/2016/tc-10-927-2016.pdf https://doaj.org/article/12d0f58161ad4c5ab3dec3c208b1e2cb en eng Copernicus Publications 1994-0416 1994-0424 doi:10.5194/tc-10-927-2016 http://www.the-cryosphere.net/10/927/2016/tc-10-927-2016.pdf https://doaj.org/article/12d0f58161ad4c5ab3dec3c208b1e2cb undefined The Cryosphere, Vol 10, Iss 2, Pp 927-940 (2016) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.5194/tc-10-927-2016 2023-01-22T17:32:58Z 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. Article in Journal/Newspaper The Cryosphere Unknown The Cryosphere 10 2 927 940 |
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language |
English |
topic |
geo envir |
spellingShingle |
geo envir M. H. Masiokas D. A. Christie C. Le Quesne P. Pitte L. Ruiz R. Villalba B. H. Luckman E. Berthier S. U. Nussbaumer Á. González-Reyes J. McPhee G. Barcaza Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data |
topic_facet |
geo envir |
description |
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. |
format |
Article in Journal/Newspaper |
author |
M. H. Masiokas D. A. Christie C. Le Quesne P. Pitte L. Ruiz R. Villalba B. H. Luckman E. Berthier S. U. Nussbaumer Á. González-Reyes J. McPhee G. Barcaza |
author_facet |
M. H. Masiokas D. A. Christie C. Le Quesne P. Pitte L. Ruiz R. Villalba B. H. Luckman E. Berthier S. U. Nussbaumer Á. González-Reyes J. McPhee G. Barcaza |
author_sort |
M. H. Masiokas |
title |
Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data |
title_short |
Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data |
title_full |
Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data |
title_fullStr |
Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data |
title_full_unstemmed |
Reconstructing the annual mass balance of the Echaurren Norte glacier (Central Andes, 33.5° S) using local and regional hydroclimatic data |
title_sort |
reconstructing the annual mass balance of the echaurren norte glacier (central andes, 33.5° s) using local and regional hydroclimatic data |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-927-2016 http://www.the-cryosphere.net/10/927/2016/tc-10-927-2016.pdf https://doaj.org/article/12d0f58161ad4c5ab3dec3c208b1e2cb |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 10, Iss 2, Pp 927-940 (2016) |
op_relation |
1994-0416 1994-0424 doi:10.5194/tc-10-927-2016 http://www.the-cryosphere.net/10/927/2016/tc-10-927-2016.pdf https://doaj.org/article/12d0f58161ad4c5ab3dec3c208b1e2cb |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-10-927-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
2 |
container_start_page |
927 |
op_container_end_page |
940 |
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1766216482250817536 |