Calibration of a hydrologic model in data-scarce Alaska using satellite and other gridded products
Study Region: Alaska and hydrologically connected portions of Canada Study Focus: Rugged terrain and harsh conditions make observational hydroclimatic data, especially runoff data, extremely limited across most of Alaska. Consequently, many previous hydrologic studies in Alaska have focused on small...
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ftdoajarticles:oai:doaj.org/article:dd1dbbc0d79846cba814e3c6d3fb8df1 2023-05-15T17:58:00+02:00 Calibration of a hydrologic model in data-scarce Alaska using satellite and other gridded products Katie E. Schneider Terri S. Hogue 2022-02-01T00:00:00Z https://doi.org/10.1016/j.ejrh.2021.100979 https://doaj.org/article/dd1dbbc0d79846cba814e3c6d3fb8df1 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2214581821002081 https://doaj.org/toc/2214-5818 2214-5818 doi:10.1016/j.ejrh.2021.100979 https://doaj.org/article/dd1dbbc0d79846cba814e3c6d3fb8df1 Journal of Hydrology: Regional Studies, Vol 39, Iss , Pp 100979- (2022) Calibration Alaska Sensitivity analysis Evapotranspiration Runoff Water balance Physical geography GB3-5030 Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.1016/j.ejrh.2021.100979 2022-12-31T15:13:20Z Study Region: Alaska and hydrologically connected portions of Canada Study Focus: Rugged terrain and harsh conditions make observational hydroclimatic data, especially runoff data, extremely limited across most of Alaska. Consequently, many previous hydrologic studies in Alaska have focused on smaller-domain trends, where pockets of hydroclimatic observations are clustered. Using a combination of reanalysis and remotely sensed gridded products, we develop a calibration framework for a monthly resolution water budget model, over the entire Alaskan domain, that does not rely on runoff. The domain is comprised of distributed model response units (MRUs), each representing a Hydrologic Unit Code 12 basin. We use a Fourier Amplitude Sensitivity Test (FAST) to inform a two-step calibration process; first calibrating to actual evapotranspiration and then to fractional snow-covered area (fSCA), resulting in a range of parameter solutions for each MRU. New Hydrological Insights for the Region: Using this framework, the model performs best in the moderate to dry Alaskan interior; in the absence of glaciation and where permafrost is generally not continuous. Modelled runoff for recent decades shows increased runoff trends at lower latitudes and slightly decreased runoff trends at higher latitudes within the Alaskan domain. These findings reveal that reliance upon non-runoff fluxes for model calibration is viable in this cold region and that better characterization of hydroclimatic data is necessary to improve confidence in cold region modeling studies. Article in Journal/Newspaper permafrost Alaska Directory of Open Access Journals: DOAJ Articles Canada Journal of Hydrology: Regional Studies 39 100979 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Calibration Alaska Sensitivity analysis Evapotranspiration Runoff Water balance Physical geography GB3-5030 Geology QE1-996.5 |
spellingShingle |
Calibration Alaska Sensitivity analysis Evapotranspiration Runoff Water balance Physical geography GB3-5030 Geology QE1-996.5 Katie E. Schneider Terri S. Hogue Calibration of a hydrologic model in data-scarce Alaska using satellite and other gridded products |
topic_facet |
Calibration Alaska Sensitivity analysis Evapotranspiration Runoff Water balance Physical geography GB3-5030 Geology QE1-996.5 |
description |
Study Region: Alaska and hydrologically connected portions of Canada Study Focus: Rugged terrain and harsh conditions make observational hydroclimatic data, especially runoff data, extremely limited across most of Alaska. Consequently, many previous hydrologic studies in Alaska have focused on smaller-domain trends, where pockets of hydroclimatic observations are clustered. Using a combination of reanalysis and remotely sensed gridded products, we develop a calibration framework for a monthly resolution water budget model, over the entire Alaskan domain, that does not rely on runoff. The domain is comprised of distributed model response units (MRUs), each representing a Hydrologic Unit Code 12 basin. We use a Fourier Amplitude Sensitivity Test (FAST) to inform a two-step calibration process; first calibrating to actual evapotranspiration and then to fractional snow-covered area (fSCA), resulting in a range of parameter solutions for each MRU. New Hydrological Insights for the Region: Using this framework, the model performs best in the moderate to dry Alaskan interior; in the absence of glaciation and where permafrost is generally not continuous. Modelled runoff for recent decades shows increased runoff trends at lower latitudes and slightly decreased runoff trends at higher latitudes within the Alaskan domain. These findings reveal that reliance upon non-runoff fluxes for model calibration is viable in this cold region and that better characterization of hydroclimatic data is necessary to improve confidence in cold region modeling studies. |
format |
Article in Journal/Newspaper |
author |
Katie E. Schneider Terri S. Hogue |
author_facet |
Katie E. Schneider Terri S. Hogue |
author_sort |
Katie E. Schneider |
title |
Calibration of a hydrologic model in data-scarce Alaska using satellite and other gridded products |
title_short |
Calibration of a hydrologic model in data-scarce Alaska using satellite and other gridded products |
title_full |
Calibration of a hydrologic model in data-scarce Alaska using satellite and other gridded products |
title_fullStr |
Calibration of a hydrologic model in data-scarce Alaska using satellite and other gridded products |
title_full_unstemmed |
Calibration of a hydrologic model in data-scarce Alaska using satellite and other gridded products |
title_sort |
calibration of a hydrologic model in data-scarce alaska using satellite and other gridded products |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://doi.org/10.1016/j.ejrh.2021.100979 https://doaj.org/article/dd1dbbc0d79846cba814e3c6d3fb8df1 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
permafrost Alaska |
genre_facet |
permafrost Alaska |
op_source |
Journal of Hydrology: Regional Studies, Vol 39, Iss , Pp 100979- (2022) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2214581821002081 https://doaj.org/toc/2214-5818 2214-5818 doi:10.1016/j.ejrh.2021.100979 https://doaj.org/article/dd1dbbc0d79846cba814e3c6d3fb8df1 |
op_doi |
https://doi.org/10.1016/j.ejrh.2021.100979 |
container_title |
Journal of Hydrology: Regional Studies |
container_volume |
39 |
container_start_page |
100979 |
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1766166521393971200 |