Variability of Ground Heat Flux at Tiksi Station
This study examines the spatial variability in ground heat flux measured at four sites in the vicinity of the Russian Arctic meteorological observatory at Tiksi during a full annual cycle in 2016. Nine land cover types were identified surrounding the Tiksi observatory using a map acquired from World...
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ftunicolboulder:oai:scholar.colorado.edu:geog_gradetds-1133 2023-05-15T14:53:36+02:00 Variability of Ground Heat Flux at Tiksi Station Morris, Sara Marie 2018-01-01T08:00:00Z application/pdf https://scholar.colorado.edu/geog_gradetds/132 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1133&context=geog_gradetds unknown CU Scholar https://scholar.colorado.edu/geog_gradetds/132 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1133&context=geog_gradetds Geography Graduate Theses & Dissertations active layer arctic flux ground energy Geography Physical and Environmental Geography text 2018 ftunicolboulder 2018-11-03T00:30:00Z This study examines the spatial variability in ground heat flux measured at four sites in the vicinity of the Russian Arctic meteorological observatory at Tiksi during a full annual cycle in 2016. Nine land cover types were identified surrounding the Tiksi observatory using a map acquired from World View via the Finnish Meteorological Institute (FMI). FMI found that land cover types vary in the vicinity of the observatory on scales of meters, implying that this information needs to be taken into account to properly upscale point measurements for comparisons to models. The ground heat flux was calculated using flux plates and soil temperature measurements at four identified soil locations: stony, grassy (two flux plates at this location), dry fen, and wet fen. To obtain a ground heat flux value, a term is also included to account for changes in energy stored in the soil above the measured ground heat flux plate at each of the measurement sites. This change in energy storage was estimated from measured temperature profiles and soil heat capacities from published studies. Results highlight the difficulty in defining soil properties necessary for calculating the storage change and of obtaining direct flux measurements from all land cover types in an Arctic region. Results also demonstrate the need for weighted averages of ground heat fluxes to upscale to model or satellite grid scales. Text Arctic Tiksi University of Colorado, Boulder: CU Scholar Arctic Tiksi ENVELOPE(128.867,128.867,71.633,71.633) |
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University of Colorado, Boulder: CU Scholar |
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active layer arctic flux ground energy Geography Physical and Environmental Geography |
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active layer arctic flux ground energy Geography Physical and Environmental Geography Morris, Sara Marie Variability of Ground Heat Flux at Tiksi Station |
topic_facet |
active layer arctic flux ground energy Geography Physical and Environmental Geography |
description |
This study examines the spatial variability in ground heat flux measured at four sites in the vicinity of the Russian Arctic meteorological observatory at Tiksi during a full annual cycle in 2016. Nine land cover types were identified surrounding the Tiksi observatory using a map acquired from World View via the Finnish Meteorological Institute (FMI). FMI found that land cover types vary in the vicinity of the observatory on scales of meters, implying that this information needs to be taken into account to properly upscale point measurements for comparisons to models. The ground heat flux was calculated using flux plates and soil temperature measurements at four identified soil locations: stony, grassy (two flux plates at this location), dry fen, and wet fen. To obtain a ground heat flux value, a term is also included to account for changes in energy stored in the soil above the measured ground heat flux plate at each of the measurement sites. This change in energy storage was estimated from measured temperature profiles and soil heat capacities from published studies. Results highlight the difficulty in defining soil properties necessary for calculating the storage change and of obtaining direct flux measurements from all land cover types in an Arctic region. Results also demonstrate the need for weighted averages of ground heat fluxes to upscale to model or satellite grid scales. |
format |
Text |
author |
Morris, Sara Marie |
author_facet |
Morris, Sara Marie |
author_sort |
Morris, Sara Marie |
title |
Variability of Ground Heat Flux at Tiksi Station |
title_short |
Variability of Ground Heat Flux at Tiksi Station |
title_full |
Variability of Ground Heat Flux at Tiksi Station |
title_fullStr |
Variability of Ground Heat Flux at Tiksi Station |
title_full_unstemmed |
Variability of Ground Heat Flux at Tiksi Station |
title_sort |
variability of ground heat flux at tiksi station |
publisher |
CU Scholar |
publishDate |
2018 |
url |
https://scholar.colorado.edu/geog_gradetds/132 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1133&context=geog_gradetds |
long_lat |
ENVELOPE(128.867,128.867,71.633,71.633) |
geographic |
Arctic Tiksi |
geographic_facet |
Arctic Tiksi |
genre |
Arctic Tiksi |
genre_facet |
Arctic Tiksi |
op_source |
Geography Graduate Theses & Dissertations |
op_relation |
https://scholar.colorado.edu/geog_gradetds/132 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1133&context=geog_gradetds |
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1766325212857499648 |