Near-surface snow particle dynamics from particle tracking velocimetry and turbulence measurements during alpine blowing snow storms
Many blowing snow conceptual and predictive models have been based on simplified two-phase flow dynamics derived from time-averaged observations of bulk flow conditions in blowing snow storms. Measurements from the first outdoor application of particle tracking velocimetry (PTV) of near-surface blow...
Published in: | The Cryosphere |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2016
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-10-3043-2016 http://www.the-cryosphere.net/10/3043/2016/tc-10-3043-2016.pdf https://doaj.org/article/88e7e2bf92d0471eb6e1a43d5b7e236d |
id |
fttriple:oai:gotriple.eu:oai:doaj.org/article:88e7e2bf92d0471eb6e1a43d5b7e236d |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:oai:doaj.org/article:88e7e2bf92d0471eb6e1a43d5b7e236d 2023-05-15T18:32:21+02:00 Near-surface snow particle dynamics from particle tracking velocimetry and turbulence measurements during alpine blowing snow storms N. O. Aksamit J. W. Pomeroy 2016-12-01 https://doi.org/10.5194/tc-10-3043-2016 http://www.the-cryosphere.net/10/3043/2016/tc-10-3043-2016.pdf https://doaj.org/article/88e7e2bf92d0471eb6e1a43d5b7e236d en eng Copernicus Publications 1994-0416 1994-0424 doi:10.5194/tc-10-3043-2016 http://www.the-cryosphere.net/10/3043/2016/tc-10-3043-2016.pdf https://doaj.org/article/88e7e2bf92d0471eb6e1a43d5b7e236d undefined The Cryosphere, Vol 10, Iss 6, Pp 3043-3062 (2016) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.5194/tc-10-3043-2016 2023-01-22T19:09:58Z Many blowing snow conceptual and predictive models have been based on simplified two-phase flow dynamics derived from time-averaged observations of bulk flow conditions in blowing snow storms. Measurements from the first outdoor application of particle tracking velocimetry (PTV) of near-surface blowing snow yield new information on mechanisms for blowing snow initiation, entrainment, and rebound, whilst also confirming some findings from wind tunnel observations. Blowing snow particle movement is influenced by complex surface flow dynamics, including saltation development from creep that has not previously been measured for snow. Comparisons with 3-D atmospheric turbulence measurements show that blowing snow particle motion immediately above the snow surface responds strongly to high-frequency turbulent motions. Momentum exchange from wind to the dense near-surface particle-laden flow appears significant and makes an important contribution to blowing snow mass flux and saltation initiation dynamics. The more complete and accurate description of near-surface snow particle motions observable using PTV may prove useful for improving blowing snow model realism and accuracy. Article in Journal/Newspaper The Cryosphere Unknown The Cryosphere 10 6 3043 3062 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir N. O. Aksamit J. W. Pomeroy Near-surface snow particle dynamics from particle tracking velocimetry and turbulence measurements during alpine blowing snow storms |
topic_facet |
geo envir |
description |
Many blowing snow conceptual and predictive models have been based on simplified two-phase flow dynamics derived from time-averaged observations of bulk flow conditions in blowing snow storms. Measurements from the first outdoor application of particle tracking velocimetry (PTV) of near-surface blowing snow yield new information on mechanisms for blowing snow initiation, entrainment, and rebound, whilst also confirming some findings from wind tunnel observations. Blowing snow particle movement is influenced by complex surface flow dynamics, including saltation development from creep that has not previously been measured for snow. Comparisons with 3-D atmospheric turbulence measurements show that blowing snow particle motion immediately above the snow surface responds strongly to high-frequency turbulent motions. Momentum exchange from wind to the dense near-surface particle-laden flow appears significant and makes an important contribution to blowing snow mass flux and saltation initiation dynamics. The more complete and accurate description of near-surface snow particle motions observable using PTV may prove useful for improving blowing snow model realism and accuracy. |
format |
Article in Journal/Newspaper |
author |
N. O. Aksamit J. W. Pomeroy |
author_facet |
N. O. Aksamit J. W. Pomeroy |
author_sort |
N. O. Aksamit |
title |
Near-surface snow particle dynamics from particle tracking velocimetry and turbulence measurements during alpine blowing snow storms |
title_short |
Near-surface snow particle dynamics from particle tracking velocimetry and turbulence measurements during alpine blowing snow storms |
title_full |
Near-surface snow particle dynamics from particle tracking velocimetry and turbulence measurements during alpine blowing snow storms |
title_fullStr |
Near-surface snow particle dynamics from particle tracking velocimetry and turbulence measurements during alpine blowing snow storms |
title_full_unstemmed |
Near-surface snow particle dynamics from particle tracking velocimetry and turbulence measurements during alpine blowing snow storms |
title_sort |
near-surface snow particle dynamics from particle tracking velocimetry and turbulence measurements during alpine blowing snow storms |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-3043-2016 http://www.the-cryosphere.net/10/3043/2016/tc-10-3043-2016.pdf https://doaj.org/article/88e7e2bf92d0471eb6e1a43d5b7e236d |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 10, Iss 6, Pp 3043-3062 (2016) |
op_relation |
1994-0416 1994-0424 doi:10.5194/tc-10-3043-2016 http://www.the-cryosphere.net/10/3043/2016/tc-10-3043-2016.pdf https://doaj.org/article/88e7e2bf92d0471eb6e1a43d5b7e236d |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-10-3043-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
6 |
container_start_page |
3043 |
op_container_end_page |
3062 |
_version_ |
1766216465077239808 |