Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing
We present a reconstruction of the Greenland Ice Sheet surface mass balance (SMB) from 1870 to 2010, based on merged Twentieth Century Reanalysis (20CR) and European Centre for Medium-Range Weather Forecasts (ECMWF) meteorological reanalyses, and we compare our new SMB series with global and regiona...
Published in: | Journal of Geophysical Research: Atmospheres |
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Language: | English |
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ftcdlib:qt4v60n9rw 2023-05-15T16:25:30+02:00 Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing Hanna, E Huybrechts, P Cappelen, J Steffen, K Bales, RC Burgess, E McConnell, JR Steffensen, JP Van Den Broeke, M Wake, L Bigg, G Griffiths, M Savas, D 2011-01-01 application/pdf http://www.escholarship.org/uc/item/4v60n9rw english eng eScholarship, University of California qt4v60n9rw http://www.escholarship.org/uc/item/4v60n9rw public Hanna, E; Huybrechts, P; Cappelen, J; Steffen, K; Bales, RC; Burgess, E; et al.(2011). Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing. Journal of Geophysical Research Atmospheres, 116(24). doi:10.1029/2011JD016387. UC Merced: Retrieved from: http://www.escholarship.org/uc/item/4v60n9rw article 2011 ftcdlib https://doi.org/10.1029/2011JD016387 2018-07-13T22:52:51Z We present a reconstruction of the Greenland Ice Sheet surface mass balance (SMB) from 1870 to 2010, based on merged Twentieth Century Reanalysis (20CR) and European Centre for Medium-Range Weather Forecasts (ECMWF) meteorological reanalyses, and we compare our new SMB series with global and regional climate and atmospheric circulation indices during this period. We demonstrate good agreement between SMB annual series constructed from 20CR and ECMWF reanalyses for the common period of overlap and show statistically significant agreement of long-term modeled snowfall with ice-core-based accumulation data. We analyze variations in SMB for the last 140 years and highlight the periods with significantly increased runoff and decreased SMB since 1870, which have both been enhanced in the period since 1990, as well as interannual variations in SMB linked to Greenland climate fluctuations. We show very good agreement of our SMB series variations with existing, independently derived SMB series (RACMO2) variations for the past few decades of overlap but also a significant disparity of up to ∼200 km 3 yr -1 in absolute SMB values due to poorly constrained modeled accumulation reflecting a lack of adequate validation data in southeast Greenland. There is no significant correlation between our SMB time series and a widely referenced time series of North Atlantic icebergs emanating from Greenland for the past century, which may reflect the complex nature of the relationship between SMB and ice dynamical changes. Finally, we discuss how our analysis sheds light on the sensitivity and response of the Greenland Ice Sheet to ongoing and future global climate change, and its contribution to global sea level rise. Copyright 2011 by the American Geophysical Union. Article in Journal/Newspaper Greenland ice core Ice Sheet North Atlantic University of California: eScholarship Greenland Journal of Geophysical Research: Atmospheres 116 D24 n/a n/a |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
description |
We present a reconstruction of the Greenland Ice Sheet surface mass balance (SMB) from 1870 to 2010, based on merged Twentieth Century Reanalysis (20CR) and European Centre for Medium-Range Weather Forecasts (ECMWF) meteorological reanalyses, and we compare our new SMB series with global and regional climate and atmospheric circulation indices during this period. We demonstrate good agreement between SMB annual series constructed from 20CR and ECMWF reanalyses for the common period of overlap and show statistically significant agreement of long-term modeled snowfall with ice-core-based accumulation data. We analyze variations in SMB for the last 140 years and highlight the periods with significantly increased runoff and decreased SMB since 1870, which have both been enhanced in the period since 1990, as well as interannual variations in SMB linked to Greenland climate fluctuations. We show very good agreement of our SMB series variations with existing, independently derived SMB series (RACMO2) variations for the past few decades of overlap but also a significant disparity of up to ∼200 km 3 yr -1 in absolute SMB values due to poorly constrained modeled accumulation reflecting a lack of adequate validation data in southeast Greenland. There is no significant correlation between our SMB time series and a widely referenced time series of North Atlantic icebergs emanating from Greenland for the past century, which may reflect the complex nature of the relationship between SMB and ice dynamical changes. Finally, we discuss how our analysis sheds light on the sensitivity and response of the Greenland Ice Sheet to ongoing and future global climate change, and its contribution to global sea level rise. Copyright 2011 by the American Geophysical Union. |
format |
Article in Journal/Newspaper |
author |
Hanna, E Huybrechts, P Cappelen, J Steffen, K Bales, RC Burgess, E McConnell, JR Steffensen, JP Van Den Broeke, M Wake, L Bigg, G Griffiths, M Savas, D |
spellingShingle |
Hanna, E Huybrechts, P Cappelen, J Steffen, K Bales, RC Burgess, E McConnell, JR Steffensen, JP Van Den Broeke, M Wake, L Bigg, G Griffiths, M Savas, D Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing |
author_facet |
Hanna, E Huybrechts, P Cappelen, J Steffen, K Bales, RC Burgess, E McConnell, JR Steffensen, JP Van Den Broeke, M Wake, L Bigg, G Griffiths, M Savas, D |
author_sort |
Hanna, E |
title |
Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing |
title_short |
Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing |
title_full |
Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing |
title_fullStr |
Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing |
title_full_unstemmed |
Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing |
title_sort |
greenland ice sheet surface mass balance 1870 to 2010 based on twentieth century reanalysis, and links with global climate forcing |
publisher |
eScholarship, University of California |
publishDate |
2011 |
url |
http://www.escholarship.org/uc/item/4v60n9rw |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland ice core Ice Sheet North Atlantic |
genre_facet |
Greenland ice core Ice Sheet North Atlantic |
op_source |
Hanna, E; Huybrechts, P; Cappelen, J; Steffen, K; Bales, RC; Burgess, E; et al.(2011). Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing. Journal of Geophysical Research Atmospheres, 116(24). doi:10.1029/2011JD016387. UC Merced: Retrieved from: http://www.escholarship.org/uc/item/4v60n9rw |
op_relation |
qt4v60n9rw http://www.escholarship.org/uc/item/4v60n9rw |
op_rights |
public |
op_doi |
https://doi.org/10.1029/2011JD016387 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
116 |
container_issue |
D24 |
container_start_page |
n/a |
op_container_end_page |
n/a |
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1766014276590370816 |