dc.date.accessioned | 2017-08-08T07:44:46Z | |
dc.date.available | 2017-08-08T07:44:46Z | |
dc.date.created | 2015-12-15T09:27:36Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Aas, Kjetil Schanke Dunse, Thorben Collier, E. Schuler, Thomas Berntsen, Terje Koren Kohler, Jack Luks, B. . Simulating the climatic mass balance of Svalbard glaciers from 2003 to 2013 with a high-resolution coupled atmosphere-glacier model. The Cryosphere Discussions. 2015, 9, 5775-5815 | |
dc.identifier.uri | http://hdl.handle.net/10852/56821 | |
dc.description.abstract | In this study we simulate the climatic mass bal- ance of Svalbard glaciers with a coupled atmosphere–glacier model with 3 km grid spacing, from September 2003 to September 2013. We find a mean specific net mass bal- ance of − 257 mm w.e. yr − 1 , corresponding to a mean annual mass loss of about 8.7 Gt, with large interannual variabil- ity. Our results are compared with a comprehensive set of mass balance, meteorological, and satellite measurements. Model temperature biases of 0.19 and − 1.9 ◦ C are found at two glacier automatic weather station sites. Simulated cli- matic mass balance is mostly within about 100 mm w.e. yr − 1 of stake measurements, and simulated winter accumulation at the Austfonna ice cap shows mean absolute errors of 47 and 67 mm w.e. yr − 1 when compared to radar-derived values for the selected years 2004 and 2006. Comparison of mod- eled surface height changes from 2003 to 2008, and satel- lite altimetry reveals good agreement in both mean values and regional differences. The largest deviations from obser- vations are found for winter accumulation at Hansbreen (up to around 1000 mm w.e. yr − 1 ), a site where sub-grid topog- raphy and wind redistribution of snow are important factors. Comparison with simulations using 9 km grid spacing reveal considerable differences on regional and local scales. In addi- tion, 3 km grid spacing allows for a much more detailed com- parison with observations than what is possible with 9 km grid spacing. Further decreasing the grid spacing to 1 km appears to be less significant, although in general precipita- tion amounts increase with resolution. Altogether, the model compares well with observations and offers possibilities for studying glacier climatic mass balance on Svalbard both his- torically as well as based on climate projections. | en_US |
dc.language | EN | |
dc.publisher | Copernicus GmbH | |
dc.rights | Attribution 3.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by/3.0/ | |
dc.title | Simulating the climatic mass balance of Svalbard glaciers from 2003 to 2013 with a high-resolution coupled atmosphere-glacier model | en_US |
dc.type | Journal article | en_US |
dc.creator.author | Aas, Kjetil Schanke | |
dc.creator.author | Dunse, Thorben | |
dc.creator.author | Collier, E. | |
dc.creator.author | Schuler, Thomas | |
dc.creator.author | Berntsen, Terje Koren | |
dc.creator.author | Kohler, Jack | |
dc.creator.author | Luks, B. | |
cristin.unitcode | 185,15,22,0 | |
cristin.unitname | Institutt for geofag | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 0 | |
dc.identifier.cristin | 1300724 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The Cryosphere Discussions&rft.volume=9&rft.spage=5775&rft.date=2015 | |
dc.identifier.jtitle | The Cryosphere Discussions | |
dc.identifier.volume | 9 | |
dc.identifier.startpage | 5775 | |
dc.identifier.endpage | 5815 | |
dc.identifier.doi | http://dx.doi.org/10.5194/tcd-9-5775-2015 | |
dc.identifier.urn | URN:NBN:no-59618 | |
dc.type.document | Tidsskriftartikkel | en_US |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 1994-0432 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/56821/1/tc-10-1089-2016.pdf | |
dc.type.version | PublishedVersion | |