Spatial variability of snowmelt timing from AMSR‐E and SSM/I passive microwave sensors, Pelly River, Yukon Territory, Canada
Abstract Spring snow melt run‐off in high latitude and snow‐dominated drainage basins is generally the most significant annual hydrological event. Melt timing, duration, and flow magnitude are highly variable and influence regional climate, geomorphology, and hydrology. Arctic and sub‐arctic regions...
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crwiley:10.1002/hyp.6717 2024-06-23T07:50:01+00:00 Spatial variability of snowmelt timing from AMSR‐E and SSM/I passive microwave sensors, Pelly River, Yukon Territory, Canada Ramage, Joan M. Apgar, Jeremy D. McKenney, Rose A. Hanna, Wade 2007 http://dx.doi.org/10.1002/hyp.6717 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.6717 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.6717 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Hydrological Processes volume 21, issue 12, page 1548-1560 ISSN 0885-6087 1099-1085 journal-article 2007 crwiley https://doi.org/10.1002/hyp.6717 2024-06-13T04:21:49Z Abstract Spring snow melt run‐off in high latitude and snow‐dominated drainage basins is generally the most significant annual hydrological event. Melt timing, duration, and flow magnitude are highly variable and influence regional climate, geomorphology, and hydrology. Arctic and sub‐arctic regions have sparse long‐term ground observations and these snow‐dominated hydrologic regimes are sensitive to the rapidly warming climate trends that characterize much of the northern latitudes. Passive microwave brightness temperatures are sensitive to changes in the liquid water content of the snow pack and make it possible to detect incipient melt, diurnal melt‐refreeze cycles, and the approximate end of snow cover on the ground over large regions. Special Sensor Microwave Imager (SSM/I) and Advanced Microwave Scanning Radiometer for EOS (AMSR‐E) passive microwave brightness temperatures (T b ) and diurnal amplitude variations (DAV) are used to investigate the spatial variability of snowmelt onset timing (in two stages, ‘DAV onset’ and ‘melt onset’) and duration for a complex sub‐arctic landscape during 2005. The satellites are sensitive to small percentages of liquid water, and therefore represent ‘incipient melt’, a condition somewhat earlier than a traditional definition of a melting snowpack. Incipient melt dates and duration are compared to topography, land cover, and hydrology to investigate the strength and significance of melt timing in heterogeneous landscapes in the Pelly River, a major tributary to the Yukon River. Microwave‐derived melt onset in this region in 2005 occurred from late February to late April. Upland areas melt 1–2 weeks later than lowland areas and have shorter transition periods. Melt timing and duration appear to be influenced by pixel elevation, aspect, and uniformity as well as other factors such as weather and snow mass distribution. The end of the transition season is uniform across sensors and across the basin in spite of a wide variety of pixel characteristics. Copyright © 2007 John ... Article in Journal/Newspaper Arctic Pelly River Yukon river Yukon Wiley Online Library Arctic Canada Pelly River ENVELOPE(-137.337,-137.337,62.783,62.783) Yukon Hydrological Processes 21 12 1548 1560 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Spring snow melt run‐off in high latitude and snow‐dominated drainage basins is generally the most significant annual hydrological event. Melt timing, duration, and flow magnitude are highly variable and influence regional climate, geomorphology, and hydrology. Arctic and sub‐arctic regions have sparse long‐term ground observations and these snow‐dominated hydrologic regimes are sensitive to the rapidly warming climate trends that characterize much of the northern latitudes. Passive microwave brightness temperatures are sensitive to changes in the liquid water content of the snow pack and make it possible to detect incipient melt, diurnal melt‐refreeze cycles, and the approximate end of snow cover on the ground over large regions. Special Sensor Microwave Imager (SSM/I) and Advanced Microwave Scanning Radiometer for EOS (AMSR‐E) passive microwave brightness temperatures (T b ) and diurnal amplitude variations (DAV) are used to investigate the spatial variability of snowmelt onset timing (in two stages, ‘DAV onset’ and ‘melt onset’) and duration for a complex sub‐arctic landscape during 2005. The satellites are sensitive to small percentages of liquid water, and therefore represent ‘incipient melt’, a condition somewhat earlier than a traditional definition of a melting snowpack. Incipient melt dates and duration are compared to topography, land cover, and hydrology to investigate the strength and significance of melt timing in heterogeneous landscapes in the Pelly River, a major tributary to the Yukon River. Microwave‐derived melt onset in this region in 2005 occurred from late February to late April. Upland areas melt 1–2 weeks later than lowland areas and have shorter transition periods. Melt timing and duration appear to be influenced by pixel elevation, aspect, and uniformity as well as other factors such as weather and snow mass distribution. The end of the transition season is uniform across sensors and across the basin in spite of a wide variety of pixel characteristics. Copyright © 2007 John ... |
format |
Article in Journal/Newspaper |
author |
Ramage, Joan M. Apgar, Jeremy D. McKenney, Rose A. Hanna, Wade |
spellingShingle |
Ramage, Joan M. Apgar, Jeremy D. McKenney, Rose A. Hanna, Wade Spatial variability of snowmelt timing from AMSR‐E and SSM/I passive microwave sensors, Pelly River, Yukon Territory, Canada |
author_facet |
Ramage, Joan M. Apgar, Jeremy D. McKenney, Rose A. Hanna, Wade |
author_sort |
Ramage, Joan M. |
title |
Spatial variability of snowmelt timing from AMSR‐E and SSM/I passive microwave sensors, Pelly River, Yukon Territory, Canada |
title_short |
Spatial variability of snowmelt timing from AMSR‐E and SSM/I passive microwave sensors, Pelly River, Yukon Territory, Canada |
title_full |
Spatial variability of snowmelt timing from AMSR‐E and SSM/I passive microwave sensors, Pelly River, Yukon Territory, Canada |
title_fullStr |
Spatial variability of snowmelt timing from AMSR‐E and SSM/I passive microwave sensors, Pelly River, Yukon Territory, Canada |
title_full_unstemmed |
Spatial variability of snowmelt timing from AMSR‐E and SSM/I passive microwave sensors, Pelly River, Yukon Territory, Canada |
title_sort |
spatial variability of snowmelt timing from amsr‐e and ssm/i passive microwave sensors, pelly river, yukon territory, canada |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1002/hyp.6717 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.6717 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.6717 |
long_lat |
ENVELOPE(-137.337,-137.337,62.783,62.783) |
geographic |
Arctic Canada Pelly River Yukon |
geographic_facet |
Arctic Canada Pelly River Yukon |
genre |
Arctic Pelly River Yukon river Yukon |
genre_facet |
Arctic Pelly River Yukon river Yukon |
op_source |
Hydrological Processes volume 21, issue 12, page 1548-1560 ISSN 0885-6087 1099-1085 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/hyp.6717 |
container_title |
Hydrological Processes |
container_volume |
21 |
container_issue |
12 |
container_start_page |
1548 |
op_container_end_page |
1560 |
_version_ |
1802640764683943936 |