Investigating the dynamics of bulk snow density in dry and wet conditions using a one-dimensional model
The snowpack is a complicated multiphase mixture with mechanical, hydraulic, and thermal properties highly variable during the year in response to climatic forcings. Bulk density is a macroscopic property of the snowpack used, together with snow depth, to quantify the water stored. In seasonal snowp...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
European Geosciences Union (EGU)
2013
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-7-433-2013 http://resolver.tudelft.nl/uuid:3a620f24-40d6-409f-83d3-6606c44b6bc0 |
id |
fttudelft:oai:tudelft.nl:uuid:3a620f24-40d6-409f-83d3-6606c44b6bc0 |
---|---|
record_format |
openpolar |
spelling |
fttudelft:oai:tudelft.nl:uuid:3a620f24-40d6-409f-83d3-6606c44b6bc0 2023-07-30T04:07:15+02:00 Investigating the dynamics of bulk snow density in dry and wet conditions using a one-dimensional model De Michele, C. (author) Avanzi, F. (author) Ghezzi, A. (author) Jommi, C. (author) 2013-03-07 https://doi.org/10.5194/tc-7-433-2013 http://resolver.tudelft.nl/uuid:3a620f24-40d6-409f-83d3-6606c44b6bc0 en eng European Geosciences Union (EGU) The Cryosphere, 7 (2), 2013--1994-0416 http://www.the-cryosphere.net/7/433/2013/ https://doi.org/10.5194/tc-7-433-2013 http://resolver.tudelft.nl/uuid:3a620f24-40d6-409f-83d3-6606c44b6bc0 © 2013 The Author(s) CC Attribution 3.0 License journal article Text 2013 fttudelft https://doi.org/10.5194/tc-7-433-2013 2023-07-08T20:01:18Z The snowpack is a complicated multiphase mixture with mechanical, hydraulic, and thermal properties highly variable during the year in response to climatic forcings. Bulk density is a macroscopic property of the snowpack used, together with snow depth, to quantify the water stored. In seasonal snowpacks, the bulk density is characterized by a strongly non-linear behaviour due to the occurrence of both dry and wet conditions. In the literature, bulk snow density estimates are obtained principally with multiple regressions, and snowpack models have put the attention principally on the snow depth and snow water equivalent. Here a one-dimensional model for the temporal dynamics of the snowpack, with particular attention to the bulk snow density, has been proposed, accounting for both dry and wet conditions. The model represents the snowpack as a two-constituent mixture: a dry part including ice structure, and air; and a wet part constituted by liquid water. It describes the dynamics of three variables: the depth and density of the dry part and the depth of liquid water. The model has been calibrated and validated against hourly data registered at three SNOTEL stations, western US, with mean values of the Nash–Sutcliffe coefficient ?0.73–0.97 in the validation period. Geoscience & Engineering Civil Engineering and Geosciences Article in Journal/Newspaper The Cryosphere Delft University of Technology: Institutional Repository Nash ENVELOPE(-62.350,-62.350,-74.233,-74.233) Sutcliffe ENVELOPE(-81.383,-81.383,50.683,50.683) The Cryosphere 7 2 433 444 |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
description |
The snowpack is a complicated multiphase mixture with mechanical, hydraulic, and thermal properties highly variable during the year in response to climatic forcings. Bulk density is a macroscopic property of the snowpack used, together with snow depth, to quantify the water stored. In seasonal snowpacks, the bulk density is characterized by a strongly non-linear behaviour due to the occurrence of both dry and wet conditions. In the literature, bulk snow density estimates are obtained principally with multiple regressions, and snowpack models have put the attention principally on the snow depth and snow water equivalent. Here a one-dimensional model for the temporal dynamics of the snowpack, with particular attention to the bulk snow density, has been proposed, accounting for both dry and wet conditions. The model represents the snowpack as a two-constituent mixture: a dry part including ice structure, and air; and a wet part constituted by liquid water. It describes the dynamics of three variables: the depth and density of the dry part and the depth of liquid water. The model has been calibrated and validated against hourly data registered at three SNOTEL stations, western US, with mean values of the Nash–Sutcliffe coefficient ?0.73–0.97 in the validation period. Geoscience & Engineering Civil Engineering and Geosciences |
format |
Article in Journal/Newspaper |
author |
De Michele, C. (author) Avanzi, F. (author) Ghezzi, A. (author) Jommi, C. (author) |
spellingShingle |
De Michele, C. (author) Avanzi, F. (author) Ghezzi, A. (author) Jommi, C. (author) Investigating the dynamics of bulk snow density in dry and wet conditions using a one-dimensional model |
author_facet |
De Michele, C. (author) Avanzi, F. (author) Ghezzi, A. (author) Jommi, C. (author) |
author_sort |
De Michele, C. (author) |
title |
Investigating the dynamics of bulk snow density in dry and wet conditions using a one-dimensional model |
title_short |
Investigating the dynamics of bulk snow density in dry and wet conditions using a one-dimensional model |
title_full |
Investigating the dynamics of bulk snow density in dry and wet conditions using a one-dimensional model |
title_fullStr |
Investigating the dynamics of bulk snow density in dry and wet conditions using a one-dimensional model |
title_full_unstemmed |
Investigating the dynamics of bulk snow density in dry and wet conditions using a one-dimensional model |
title_sort |
investigating the dynamics of bulk snow density in dry and wet conditions using a one-dimensional model |
publisher |
European Geosciences Union (EGU) |
publishDate |
2013 |
url |
https://doi.org/10.5194/tc-7-433-2013 http://resolver.tudelft.nl/uuid:3a620f24-40d6-409f-83d3-6606c44b6bc0 |
long_lat |
ENVELOPE(-62.350,-62.350,-74.233,-74.233) ENVELOPE(-81.383,-81.383,50.683,50.683) |
geographic |
Nash Sutcliffe |
geographic_facet |
Nash Sutcliffe |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere, 7 (2), 2013--1994-0416 http://www.the-cryosphere.net/7/433/2013/ https://doi.org/10.5194/tc-7-433-2013 http://resolver.tudelft.nl/uuid:3a620f24-40d6-409f-83d3-6606c44b6bc0 |
op_rights |
© 2013 The Author(s) CC Attribution 3.0 License |
op_doi |
https://doi.org/10.5194/tc-7-433-2013 |
container_title |
The Cryosphere |
container_volume |
7 |
container_issue |
2 |
container_start_page |
433 |
op_container_end_page |
444 |
_version_ |
1772820461046988800 |