Modelling the regional climate and isotopic composition of Svalbard precipitation using REMOiso:a comparison with available GNIP and ice core data
Simulations of a regional (approx. 50 km resolution) circulation model REMOiso with embedded stable water isotope module covering the period 1958-2001 are compared with the two instrumental climate and four isotope series (d18O) from western Svalbard. We examine the data from ice cores drilled on Sv...
Published in: | Hydrological Processes |
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Language: | English |
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2011
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Online Access: | https://curis.ku.dk/portal/da/publications/modelling-the-regional-climate-and-isotopic-composition-of-svalbard-precipitation-using-remoiso(93afb20b-9b8d-4d51-9650-812003ae7729).html https://doi.org/10.1002/hyp.8100 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/93afb20b-9b8d-4d51-9650-812003ae7729 2023-08-27T04:09:58+02:00 Modelling the regional climate and isotopic composition of Svalbard precipitation using REMOiso:a comparison with available GNIP and ice core data Divine. , D.V. Sjolte, Jesper Isaksson, E. Meijer, H.A.J. van de Wal, RSW 2011-11-29 https://curis.ku.dk/portal/da/publications/modelling-the-regional-climate-and-isotopic-composition-of-svalbard-precipitation-using-remoiso(93afb20b-9b8d-4d51-9650-812003ae7729).html https://doi.org/10.1002/hyp.8100 eng eng info:eu-repo/semantics/restrictedAccess Divine.[et al.] , D V , Sjolte , J , Isaksson , E , Meijer , H A J & van de Wal , RSW 2011 , ' Modelling the regional climate and isotopic composition of Svalbard precipitation using REMOiso : a comparison with available GNIP and ice core data ' , Hydrological Processes , vol. 25 , no. 24 , pp. 3748-3759 . https://doi.org/10.1002/hyp.8100 article 2011 ftcopenhagenunip https://doi.org/10.1002/hyp.8100 2023-08-02T23:00:50Z Simulations of a regional (approx. 50 km resolution) circulation model REMOiso with embedded stable water isotope module covering the period 1958-2001 are compared with the two instrumental climate and four isotope series (d18O) from western Svalbard. We examine the data from ice cores drilled on Svalbard ice caps in 1997 (Lomonosovfonna, 1250 m asl) and 2005 (Holtedahlfonna, 1150 m asl) and the GNIP series from Ny-angstrom lesund and Isfjord Radio. The surface air temperature (SAT) and precipitation data from Longyearbyen and Ny-angstrom lesund are used to assess the skill of the model in reproducing the local climate. The model successfully captures the climate variations on the daily to multidecadal times scales although it tends to systematically underestimate the winter SAT. Analysis suggests that REMOiso performs better at simulating isotope compositions of precipitation in the winter than summer. The simulated and measured Holtedahlfonna d18O series agree reasonably well, whereas no significant correlation has been observed between the modelled and measured Lomonosovfonna ice core isotopic series. It is shown that sporadic nature as well as variability in the amount inherent in precipitation process potentially limits the accuracy of the past SAT reconstruction from the ice core data. This effect in the study area is, however, diminished by the role of other factors controlling d18O in precipitation, most likely sea ice extent, which is directly related with the SAT anomalies. Article in Journal/Newspaper ice core Isfjord* Longyearbyen Sea ice Svalbard University of Copenhagen: Research Svalbard Longyearbyen Isfjord ENVELOPE(-26.917,-26.917,73.333,73.333) Lomonosovfonna ENVELOPE(17.663,17.663,78.774,78.774) Lesund ENVELOPE(8.470,8.470,63.331,63.331) Holtedahlfonna ENVELOPE(13.730,13.730,79.011,79.011) Hydrological Processes 25 24 3748 3759 |
institution |
Open Polar |
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University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
Simulations of a regional (approx. 50 km resolution) circulation model REMOiso with embedded stable water isotope module covering the period 1958-2001 are compared with the two instrumental climate and four isotope series (d18O) from western Svalbard. We examine the data from ice cores drilled on Svalbard ice caps in 1997 (Lomonosovfonna, 1250 m asl) and 2005 (Holtedahlfonna, 1150 m asl) and the GNIP series from Ny-angstrom lesund and Isfjord Radio. The surface air temperature (SAT) and precipitation data from Longyearbyen and Ny-angstrom lesund are used to assess the skill of the model in reproducing the local climate. The model successfully captures the climate variations on the daily to multidecadal times scales although it tends to systematically underestimate the winter SAT. Analysis suggests that REMOiso performs better at simulating isotope compositions of precipitation in the winter than summer. The simulated and measured Holtedahlfonna d18O series agree reasonably well, whereas no significant correlation has been observed between the modelled and measured Lomonosovfonna ice core isotopic series. It is shown that sporadic nature as well as variability in the amount inherent in precipitation process potentially limits the accuracy of the past SAT reconstruction from the ice core data. This effect in the study area is, however, diminished by the role of other factors controlling d18O in precipitation, most likely sea ice extent, which is directly related with the SAT anomalies. |
format |
Article in Journal/Newspaper |
author |
Divine. , D.V. Sjolte, Jesper Isaksson, E. Meijer, H.A.J. van de Wal, RSW |
spellingShingle |
Divine. , D.V. Sjolte, Jesper Isaksson, E. Meijer, H.A.J. van de Wal, RSW Modelling the regional climate and isotopic composition of Svalbard precipitation using REMOiso:a comparison with available GNIP and ice core data |
author_facet |
Divine. , D.V. Sjolte, Jesper Isaksson, E. Meijer, H.A.J. van de Wal, RSW |
author_sort |
Divine. , D.V. |
title |
Modelling the regional climate and isotopic composition of Svalbard precipitation using REMOiso:a comparison with available GNIP and ice core data |
title_short |
Modelling the regional climate and isotopic composition of Svalbard precipitation using REMOiso:a comparison with available GNIP and ice core data |
title_full |
Modelling the regional climate and isotopic composition of Svalbard precipitation using REMOiso:a comparison with available GNIP and ice core data |
title_fullStr |
Modelling the regional climate and isotopic composition of Svalbard precipitation using REMOiso:a comparison with available GNIP and ice core data |
title_full_unstemmed |
Modelling the regional climate and isotopic composition of Svalbard precipitation using REMOiso:a comparison with available GNIP and ice core data |
title_sort |
modelling the regional climate and isotopic composition of svalbard precipitation using remoiso:a comparison with available gnip and ice core data |
publishDate |
2011 |
url |
https://curis.ku.dk/portal/da/publications/modelling-the-regional-climate-and-isotopic-composition-of-svalbard-precipitation-using-remoiso(93afb20b-9b8d-4d51-9650-812003ae7729).html https://doi.org/10.1002/hyp.8100 |
long_lat |
ENVELOPE(-26.917,-26.917,73.333,73.333) ENVELOPE(17.663,17.663,78.774,78.774) ENVELOPE(8.470,8.470,63.331,63.331) ENVELOPE(13.730,13.730,79.011,79.011) |
geographic |
Svalbard Longyearbyen Isfjord Lomonosovfonna Lesund Holtedahlfonna |
geographic_facet |
Svalbard Longyearbyen Isfjord Lomonosovfonna Lesund Holtedahlfonna |
genre |
ice core Isfjord* Longyearbyen Sea ice Svalbard |
genre_facet |
ice core Isfjord* Longyearbyen Sea ice Svalbard |
op_source |
Divine.[et al.] , D V , Sjolte , J , Isaksson , E , Meijer , H A J & van de Wal , RSW 2011 , ' Modelling the regional climate and isotopic composition of Svalbard precipitation using REMOiso : a comparison with available GNIP and ice core data ' , Hydrological Processes , vol. 25 , no. 24 , pp. 3748-3759 . https://doi.org/10.1002/hyp.8100 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/hyp.8100 |
container_title |
Hydrological Processes |
container_volume |
25 |
container_issue |
24 |
container_start_page |
3748 |
op_container_end_page |
3759 |
_version_ |
1775351681873084416 |