Hide metadata

dc.date.accessioned2018-09-04T10:17:01Z
dc.date.available2018-09-04T10:17:01Z
dc.date.created2017-12-29T15:24:17Z
dc.date.issued2017
dc.identifier.citationD'Amboise, Christopher James Müller, Karsten Oxarango, Laurent Morin, Samuel Schuler, Thomas . Implementation of a physically based water percolation routine in the Crocus/SURFEX (V7.3) snowpack model. Geoscientific Model Development. 2017, 10(9), 3547-3566
dc.identifier.urihttp://hdl.handle.net/10852/64099
dc.description.abstractWe present a new water percolation routine added to the one-dimensional snowpack model Crocus as an alternative to the empirical bucket routine. This routine solves the Richards equation, which describes flow of water through unsaturated porous snow governed by capillary suction, gravity and hydraulic conductivity of the snow layers. We tested the Richards routine on two data sets, one recorded from an automatic weather station over the winter of 2013–2014 at Filefjell, Norway, and the other an idealized synthetic data set. Model results using the Richards routine generally lead to higher water contents in the snow layers. Snow layers often reached a point at which the ice crystals' surface area is completely covered by a thin film of water (the transition between pendular and funicular regimes), at which feedback from the snow metamorphism and compaction routines are expected to be nonlinear. With the synthetic simulation 18 % of snow layers obtained a saturation of  >  10 % and 0.57 % of layers reached saturation of  >  15 %. The Richards routine had a maximum liquid water content of 173.6 kg m−3 whereas the bucket routine had a maximum of 42.1 kg m−3. We found that wet-snow processes, such as wet-snow metamorphism and wet-snow compaction rates, are not accurately represented at higher water contents. These routines feed back on the Richards routines, which rely heavily on grain size and snow density. The parameter sets for the water retention curve and hydraulic conductivity of snow layers, which are used in the Richards routine, do not represent all the snow types that can be found in a natural snowpack. We show that the new routine has been implemented in the Crocus model, but due to feedback amplification and parameter uncertainties, meaningful applicability is limited. Updating or adapting other routines in Crocus, specifically the snow compaction routine and the grain metamorphism routine, is needed before Crocus can accurately simulate the snowpack using the Richards routine.en_US
dc.languageEN
dc.publisherCopernicus GmbH
dc.rightsAttribution 3.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.titleImplementation of a physically based water percolation routine in the Crocus/SURFEX (V7.3) snowpack modelen_US
dc.typeJournal articleen_US
dc.creator.authorD'Amboise, Christopher James
dc.creator.authorMüller, Karsten
dc.creator.authorOxarango, Laurent
dc.creator.authorMorin, Samuel
dc.creator.authorSchuler, Thomas
cristin.unitcode185,15,22,0
cristin.unitnameInstitutt for geofag
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.cristin1532832
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geoscientific Model Development&rft.volume=10&rft.spage=3547&rft.date=2017
dc.identifier.jtitleGeoscientific Model Development
dc.identifier.volume10
dc.identifier.issue9
dc.identifier.startpage3547
dc.identifier.endpage3566
dc.identifier.doihttp://dx.doi.org/10.5194/gmd-10-3547-2017
dc.identifier.urnURN:NBN:no-66642
dc.type.documentTidsskriftartikkelen_US
dc.type.peerreviewedPeer reviewed
dc.source.issn1991-959X
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/64099/2/gmd-10-3547-2017.pdf
dc.type.versionPublishedVersion


Files in this item

Appears in the following Collection

Hide metadata

Attribution 3.0 Unported
This item's license is: Attribution 3.0 Unported