dc.date.accessioned | 2022-02-03T16:34:47Z | |
dc.date.available | 2022-02-03T16:34:47Z | |
dc.date.created | 2022-01-13T15:16:01Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Rounce, David Hock, Regine McNabb, Robert Millan, R Sommer, C . Distributed global debris thickness estimates reveal debris significantly impacts glacier mass balance. Geophysical Research Letters. 2021, 48(8) | |
dc.identifier.uri | http://hdl.handle.net/10852/90483 | |
dc.description.abstract | Supraglacial debris affects glacier mass balance as a thin layer enhances surface melting, while a thick layer reduces it. While many glaciers are debris-covered, global glacier models do not account for debris because its thickness is unknown. We provide the first globally distributed debris thickness estimates using a novel approach combining sub-debris melt and surface temperature inversion methods. Results are evaluated against observations from 22 glaciers. We find the median global debris thickness is ∼0.15 ± 0.06 m. In all regions, the net effect of accounting for debris is a reduction in sub-debris melt, on average, by 37%, which can impact regional mass balance by up to 0.40 m water equivalent (w.e.) yr-1. We also find recent observations of similar thinning rates over debris-covered and clean ice glacier tongues is primarily due to differences in ice dynamics. Our results demonstrate the importance of accounting for debris in glacier modeling efforts. | |
dc.language | EN | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.title | Distributed global debris thickness estimates reveal debris significantly impacts glacier mass balance | |
dc.type | Journal article | |
dc.creator.author | Rounce, David | |
dc.creator.author | Hock, Regine | |
dc.creator.author | McNabb, Robert | |
dc.creator.author | Millan, R | |
dc.creator.author | Sommer, C | |
cristin.unitcode | 185,15,22,60 | |
cristin.unitname | Seksjon for naturgeografi og hydrologi | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.cristin | 1980600 | |
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=Geophysical Research Letters&rft.volume=48&rft.spage=&rft.date=2021 | |
dc.identifier.jtitle | Geophysical Research Letters | |
dc.identifier.volume | 48 | |
dc.identifier.issue | 8 | |
dc.identifier.doi | https://doi.org/10.1029/2020GL091311 | |
dc.identifier.urn | URN:NBN:no-93095 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0094-8276 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/90483/1/Rounce2021_GRL2021_global_debris.pdf | |
dc.type.version | PublishedVersion | |
cristin.articleid | e2020GL091311 | |