The Use of Inductive and Deductive Reasoning to Model Snowmelt Runoff from Northern Mountain Catchments
Reliable hydrological modeling at small to medium scales is very difficult. At these scale, models require incorporation of both detailed process understanding and inputs along with information gained from observations of basin-wide streamflow phenomenon; essentially a combination of deductive and i...
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ftbrighamyoung:oai:scholarsarchive.byu.edu:iemssconference-3450 2023-07-23T04:21:22+02:00 The Use of Inductive and Deductive Reasoning to Model Snowmelt Runoff from Northern Mountain Catchments Dornes, P. F. Pomeroy, J. W. Pietroniro, A. Careyc, S. K. Quinton, W. L. 2006-07-01T07:00:00Z application/pdf https://scholarsarchive.byu.edu/iemssconference/2006/all/347 https://scholarsarchive.byu.edu/context/iemssconference/article/3450/viewcontent/224_Dornes_2.pdf unknown BYU ScholarsArchive https://scholarsarchive.byu.edu/iemssconference/2006/all/347 https://scholarsarchive.byu.edu/context/iemssconference/article/3450/viewcontent/224_Dornes_2.pdf International Congress on Environmental Modelling and Software modeling aggregation hrus slope and aspect snow melt text 2006 ftbrighamyoung 2023-07-03T22:36:21Z Reliable hydrological modeling at small to medium scales is very difficult. At these scale, models require incorporation of both detailed process understanding and inputs along with information gained from observations of basin-wide streamflow phenomenon; essentially a combination of deductive and inductive approaches. At Granger Creek, part of the Wolf Creek Research Basin in the mountains of the Yukon Territory, Canada, sparse and shrub tundra cover the basin and soils are frozen at the time of snowmelt. Wind redistributes snow to north facing slopes and shrub tundra areas, while spring melt rates are much higher on south facing slopes due to increased incident solar radiation. Soil moisture and porosity are higher on north facing slopes and notably smaller on south facing slopes, reflecting cumulative differences in summer evaporation losses and the presence of permafrost on north slopes. Observations of streamflow show that peak flows are due to snowmelt, and that the timing of the peak is associated with the timing of snowmelt in the shrub-tundra vegetation zone, while the duration of the peak is associated with the duration of snowmelt on north facing slopes and high elevation zones. Despite small scale observations of rapid and early snowmelt on the south facing slopes, melt from these slopes occurs well before the spring hydrograph rise. To incorporate information from our recent advances in process understanding and in basin streamflow behavior, a ‘hydrological response’ landscape unit modeling approach is used including information on: slope, aspect, shrub canopy, snow water equivalent, soil structure and soil moisture in order to predict snow-cover depletion and runoff generation. The importance of landcover parameters to snow covered area depletion, water balance and streamflow is investigated by a sensitivity analysis on parameter values and spatial aggregation of response units by comparisons to not only streamflow, but also to snow cover depletion. Text permafrost Tundra Yukon Brigham Young University (BYU): ScholarsArchive Yukon Canada Granger Creek ENVELOPE(-123.303,-123.303,57.600,57.600) |
institution |
Open Polar |
collection |
Brigham Young University (BYU): ScholarsArchive |
op_collection_id |
ftbrighamyoung |
language |
unknown |
topic |
modeling aggregation hrus slope and aspect snow melt |
spellingShingle |
modeling aggregation hrus slope and aspect snow melt Dornes, P. F. Pomeroy, J. W. Pietroniro, A. Careyc, S. K. Quinton, W. L. The Use of Inductive and Deductive Reasoning to Model Snowmelt Runoff from Northern Mountain Catchments |
topic_facet |
modeling aggregation hrus slope and aspect snow melt |
description |
Reliable hydrological modeling at small to medium scales is very difficult. At these scale, models require incorporation of both detailed process understanding and inputs along with information gained from observations of basin-wide streamflow phenomenon; essentially a combination of deductive and inductive approaches. At Granger Creek, part of the Wolf Creek Research Basin in the mountains of the Yukon Territory, Canada, sparse and shrub tundra cover the basin and soils are frozen at the time of snowmelt. Wind redistributes snow to north facing slopes and shrub tundra areas, while spring melt rates are much higher on south facing slopes due to increased incident solar radiation. Soil moisture and porosity are higher on north facing slopes and notably smaller on south facing slopes, reflecting cumulative differences in summer evaporation losses and the presence of permafrost on north slopes. Observations of streamflow show that peak flows are due to snowmelt, and that the timing of the peak is associated with the timing of snowmelt in the shrub-tundra vegetation zone, while the duration of the peak is associated with the duration of snowmelt on north facing slopes and high elevation zones. Despite small scale observations of rapid and early snowmelt on the south facing slopes, melt from these slopes occurs well before the spring hydrograph rise. To incorporate information from our recent advances in process understanding and in basin streamflow behavior, a ‘hydrological response’ landscape unit modeling approach is used including information on: slope, aspect, shrub canopy, snow water equivalent, soil structure and soil moisture in order to predict snow-cover depletion and runoff generation. The importance of landcover parameters to snow covered area depletion, water balance and streamflow is investigated by a sensitivity analysis on parameter values and spatial aggregation of response units by comparisons to not only streamflow, but also to snow cover depletion. |
format |
Text |
author |
Dornes, P. F. Pomeroy, J. W. Pietroniro, A. Careyc, S. K. Quinton, W. L. |
author_facet |
Dornes, P. F. Pomeroy, J. W. Pietroniro, A. Careyc, S. K. Quinton, W. L. |
author_sort |
Dornes, P. F. |
title |
The Use of Inductive and Deductive Reasoning to Model Snowmelt Runoff from Northern Mountain Catchments |
title_short |
The Use of Inductive and Deductive Reasoning to Model Snowmelt Runoff from Northern Mountain Catchments |
title_full |
The Use of Inductive and Deductive Reasoning to Model Snowmelt Runoff from Northern Mountain Catchments |
title_fullStr |
The Use of Inductive and Deductive Reasoning to Model Snowmelt Runoff from Northern Mountain Catchments |
title_full_unstemmed |
The Use of Inductive and Deductive Reasoning to Model Snowmelt Runoff from Northern Mountain Catchments |
title_sort |
use of inductive and deductive reasoning to model snowmelt runoff from northern mountain catchments |
publisher |
BYU ScholarsArchive |
publishDate |
2006 |
url |
https://scholarsarchive.byu.edu/iemssconference/2006/all/347 https://scholarsarchive.byu.edu/context/iemssconference/article/3450/viewcontent/224_Dornes_2.pdf |
long_lat |
ENVELOPE(-123.303,-123.303,57.600,57.600) |
geographic |
Yukon Canada Granger Creek |
geographic_facet |
Yukon Canada Granger Creek |
genre |
permafrost Tundra Yukon |
genre_facet |
permafrost Tundra Yukon |
op_source |
International Congress on Environmental Modelling and Software |
op_relation |
https://scholarsarchive.byu.edu/iemssconference/2006/all/347 https://scholarsarchive.byu.edu/context/iemssconference/article/3450/viewcontent/224_Dornes_2.pdf |
_version_ |
1772186856583069696 |