Glacier surface temperatures in the Canadian High Arctic, 2000–15
Canada's Queen Elizabeth Islands (QEI) contain ~14% of the world's glacier and ice-cap area. Sparse in-situ measurements indicate that interannual variability in glacier surface mass balance in this region is driven primarily by variations in summer melt, and that the annual surface mass b...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/341110 2023-07-23T04:17:54+02:00 Glacier surface temperatures in the Canadian High Arctic, 2000–15 Mortimer, Colleen Sharp, Martin Wouters, Bert Sub Dynamics Meteorology Marine and Atmospheric Research 2016-10-01 image/pdf https://dspace.library.uu.nl/handle/1874/341110 other unknown 0022-1430 https://dspace.library.uu.nl/handle/1874/341110 info:eu-repo/semantics/OpenAccess Article 2016 ftunivutrecht 2023-07-02T01:52:15Z Canada's Queen Elizabeth Islands (QEI) contain ~14% of the world's glacier and ice-cap area. Sparse in-situ measurements indicate that interannual variability in glacier surface mass balance in this region is driven primarily by variations in summer melt, and that the annual surface mass balance of four index glaciers has become increasingly negative since 2007. Here, we use a 16-a record of satellite-derived mean summer (June–August) land surface temperatures (LST) from NASA's Moderate Resolution Imaging Spectroradiometer to investigate large-scale spatial and temporal variability in the duration and intensity of summer melt across glaciated surfaces in the QEI from 2000 to 2015. During this period, QEI mean summer glacier surface temperatures increased at an average rate of 0.06 ± 0.04°C a−1, for a total of nearly 1°C. Most of this increase occurred between 2005 and 2012, when mean summer near-surface (2 m) and upper-air (700 hPa) temperatures were 1.0–1.2°C higher than the 1948–2015 mean. There is a strong correlation between the glacier LST and 700 hPa air temperature records (r> 0.8). The period 2005–12, when mean summer LSTs were anomalously high, was likely the warmest period in the region since at least 1948. Article in Journal/Newspaper Arctic Ice cap Queen Elizabeth Islands Utrecht University Repository Arctic |
institution |
Open Polar |
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Utrecht University Repository |
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ftunivutrecht |
language |
unknown |
description |
Canada's Queen Elizabeth Islands (QEI) contain ~14% of the world's glacier and ice-cap area. Sparse in-situ measurements indicate that interannual variability in glacier surface mass balance in this region is driven primarily by variations in summer melt, and that the annual surface mass balance of four index glaciers has become increasingly negative since 2007. Here, we use a 16-a record of satellite-derived mean summer (June–August) land surface temperatures (LST) from NASA's Moderate Resolution Imaging Spectroradiometer to investigate large-scale spatial and temporal variability in the duration and intensity of summer melt across glaciated surfaces in the QEI from 2000 to 2015. During this period, QEI mean summer glacier surface temperatures increased at an average rate of 0.06 ± 0.04°C a−1, for a total of nearly 1°C. Most of this increase occurred between 2005 and 2012, when mean summer near-surface (2 m) and upper-air (700 hPa) temperatures were 1.0–1.2°C higher than the 1948–2015 mean. There is a strong correlation between the glacier LST and 700 hPa air temperature records (r> 0.8). The period 2005–12, when mean summer LSTs were anomalously high, was likely the warmest period in the region since at least 1948. |
author2 |
Sub Dynamics Meteorology Marine and Atmospheric Research |
format |
Article in Journal/Newspaper |
author |
Mortimer, Colleen Sharp, Martin Wouters, Bert |
spellingShingle |
Mortimer, Colleen Sharp, Martin Wouters, Bert Glacier surface temperatures in the Canadian High Arctic, 2000–15 |
author_facet |
Mortimer, Colleen Sharp, Martin Wouters, Bert |
author_sort |
Mortimer, Colleen |
title |
Glacier surface temperatures in the Canadian High Arctic, 2000–15 |
title_short |
Glacier surface temperatures in the Canadian High Arctic, 2000–15 |
title_full |
Glacier surface temperatures in the Canadian High Arctic, 2000–15 |
title_fullStr |
Glacier surface temperatures in the Canadian High Arctic, 2000–15 |
title_full_unstemmed |
Glacier surface temperatures in the Canadian High Arctic, 2000–15 |
title_sort |
glacier surface temperatures in the canadian high arctic, 2000–15 |
publishDate |
2016 |
url |
https://dspace.library.uu.nl/handle/1874/341110 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice cap Queen Elizabeth Islands |
genre_facet |
Arctic Ice cap Queen Elizabeth Islands |
op_relation |
0022-1430 https://dspace.library.uu.nl/handle/1874/341110 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1772179983667560448 |