Glacier surface temperatures in the Canadian High Arctic, 2000–15
ABSTRACT 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 surfa...
Published in: | Journal of Glaciology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2016
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/jog.2016.80 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143016000800 |
id |
crcambridgeupr:10.1017/jog.2016.80 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/jog.2016.80 2024-06-23T07:50:33+00:00 Glacier surface temperatures in the Canadian High Arctic, 2000–15 MORTIMER, COLLEEN A. SHARP, MARTIN WOUTERS, BERT 2016 http://dx.doi.org/10.1017/jog.2016.80 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143016000800 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 62, issue 235, page 963-975 ISSN 0022-1430 1727-5652 journal-article 2016 crcambridgeupr https://doi.org/10.1017/jog.2016.80 2024-06-12T04:04:49Z ABSTRACT 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 Journal of Glaciology Queen Elizabeth Islands Cambridge University Press Arctic Journal of Glaciology 62 235 963 975 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
ABSTRACT 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. |
format |
Article in Journal/Newspaper |
author |
MORTIMER, COLLEEN A. SHARP, MARTIN WOUTERS, BERT |
spellingShingle |
MORTIMER, COLLEEN A. SHARP, MARTIN WOUTERS, BERT Glacier surface temperatures in the Canadian High Arctic, 2000–15 |
author_facet |
MORTIMER, COLLEEN A. SHARP, MARTIN WOUTERS, BERT |
author_sort |
MORTIMER, COLLEEN A. |
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 |
publisher |
Cambridge University Press (CUP) |
publishDate |
2016 |
url |
http://dx.doi.org/10.1017/jog.2016.80 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143016000800 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice cap Journal of Glaciology Queen Elizabeth Islands |
genre_facet |
Arctic Ice cap Journal of Glaciology Queen Elizabeth Islands |
op_source |
Journal of Glaciology volume 62, issue 235, page 963-975 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2016.80 |
container_title |
Journal of Glaciology |
container_volume |
62 |
container_issue |
235 |
container_start_page |
963 |
op_container_end_page |
975 |
_version_ |
1802641460912193536 |