Brief communication: CESM2 climate forcing (1950–2014) yields realistic Greenland ice sheet surface mass balance
We present a reconstruction of historical (1950–2014) surface mass balance (SMB) of the Greenland ice sheet (GrIS) using a high-resolution regional climate model (RACMO2; ∼11 km) to dynamically downscale the climate of the Community Earth System Model version 2 (CESM2; ∼111 km). After further statis...
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Online Access: | https://doi.org/10.5194/tc-14-1425-2020 https://www.the-cryosphere.net/14/1425/2020/tc-14-1425-2020.pdf https://doaj.org/article/1891550a032c496d8be2365478770e9d |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:1891550a032c496d8be2365478770e9d 2023-05-15T16:27:39+02:00 Brief communication: CESM2 climate forcing (1950–2014) yields realistic Greenland ice sheet surface mass balance B. Noël L. van Kampenhout W. J. van de Berg J. T. M. Lenaerts B. Wouters M. R. van den Broeke 2020-04-01 https://doi.org/10.5194/tc-14-1425-2020 https://www.the-cryosphere.net/14/1425/2020/tc-14-1425-2020.pdf https://doaj.org/article/1891550a032c496d8be2365478770e9d en eng Copernicus Publications doi:10.5194/tc-14-1425-2020 1994-0416 1994-0424 https://www.the-cryosphere.net/14/1425/2020/tc-14-1425-2020.pdf https://doaj.org/article/1891550a032c496d8be2365478770e9d undefined The Cryosphere, Vol 14, Pp 1425-1435 (2020) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.5194/tc-14-1425-2020 2023-01-22T17:50:43Z We present a reconstruction of historical (1950–2014) surface mass balance (SMB) of the Greenland ice sheet (GrIS) using a high-resolution regional climate model (RACMO2; ∼11 km) to dynamically downscale the climate of the Community Earth System Model version 2 (CESM2; ∼111 km). After further statistical downscaling to 1 km spatial resolution, evaluation using in situ SMB measurements and remotely sensed GrIS mass change shows good agreement. Comparison with an ensemble of previously conducted RACMO2 simulations forced by climate reanalysis demonstrates that the current product realistically represents the long-term average and variability of individual SMB components and captures the recent increase in meltwater runoff that accelerated GrIS mass loss. This means that, for the first time, climate forcing from an Earth system model (CESM2), which assimilates no observations, can be used without additional corrections to reconstruct the historical GrIS SMB and its recent decline that initiated mass loss in the 1990s. This paves the way for attribution studies of future GrIS mass loss projections and contribution to sea level rise. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere Unknown Greenland The Cryosphere 14 4 1425 1435 |
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geo envir B. Noël L. van Kampenhout W. J. van de Berg J. T. M. Lenaerts B. Wouters M. R. van den Broeke Brief communication: CESM2 climate forcing (1950–2014) yields realistic Greenland ice sheet surface mass balance |
topic_facet |
geo envir |
description |
We present a reconstruction of historical (1950–2014) surface mass balance (SMB) of the Greenland ice sheet (GrIS) using a high-resolution regional climate model (RACMO2; ∼11 km) to dynamically downscale the climate of the Community Earth System Model version 2 (CESM2; ∼111 km). After further statistical downscaling to 1 km spatial resolution, evaluation using in situ SMB measurements and remotely sensed GrIS mass change shows good agreement. Comparison with an ensemble of previously conducted RACMO2 simulations forced by climate reanalysis demonstrates that the current product realistically represents the long-term average and variability of individual SMB components and captures the recent increase in meltwater runoff that accelerated GrIS mass loss. This means that, for the first time, climate forcing from an Earth system model (CESM2), which assimilates no observations, can be used without additional corrections to reconstruct the historical GrIS SMB and its recent decline that initiated mass loss in the 1990s. This paves the way for attribution studies of future GrIS mass loss projections and contribution to sea level rise. |
format |
Article in Journal/Newspaper |
author |
B. Noël L. van Kampenhout W. J. van de Berg J. T. M. Lenaerts B. Wouters M. R. van den Broeke |
author_facet |
B. Noël L. van Kampenhout W. J. van de Berg J. T. M. Lenaerts B. Wouters M. R. van den Broeke |
author_sort |
B. Noël |
title |
Brief communication: CESM2 climate forcing (1950–2014) yields realistic Greenland ice sheet surface mass balance |
title_short |
Brief communication: CESM2 climate forcing (1950–2014) yields realistic Greenland ice sheet surface mass balance |
title_full |
Brief communication: CESM2 climate forcing (1950–2014) yields realistic Greenland ice sheet surface mass balance |
title_fullStr |
Brief communication: CESM2 climate forcing (1950–2014) yields realistic Greenland ice sheet surface mass balance |
title_full_unstemmed |
Brief communication: CESM2 climate forcing (1950–2014) yields realistic Greenland ice sheet surface mass balance |
title_sort |
brief communication: cesm2 climate forcing (1950–2014) yields realistic greenland ice sheet surface mass balance |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/tc-14-1425-2020 https://www.the-cryosphere.net/14/1425/2020/tc-14-1425-2020.pdf https://doaj.org/article/1891550a032c496d8be2365478770e9d |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Vol 14, Pp 1425-1435 (2020) |
op_relation |
doi:10.5194/tc-14-1425-2020 1994-0416 1994-0424 https://www.the-cryosphere.net/14/1425/2020/tc-14-1425-2020.pdf https://doaj.org/article/1891550a032c496d8be2365478770e9d |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-14-1425-2020 |
container_title |
The Cryosphere |
container_volume |
14 |
container_issue |
4 |
container_start_page |
1425 |
op_container_end_page |
1435 |
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1766017102082211840 |