Contribution of environmental factors to temperature distribution at different resolution levels on the forefield of the Loven Glaciers (Svalbard)
ACL International audience The climate and its components (temperature and precipitation) are organised according to different spatial scales that are structured hierarchically. The aim of this paper is to explore the dependence between temperature and deterministic factors at different scales on a...
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ftunifranchecom:oai:HAL:hal-00731631v1 2024-09-15T18:31:19+00:00 Contribution of environmental factors to temperature distribution at different resolution levels on the forefield of the Loven Glaciers (Svalbard) Joly, Daniel Brossard, Thierry Théoriser et modéliser pour aménager (UMR 6049) (ThéMA) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) 2007 https://hal.science/hal-00731631 en eng HAL CCSD Cambridge University Press (CUP) hal-00731631 https://hal.science/hal-00731631 ISSN: 0032-2474 EISSN: 1475-3057 Polar Record https://hal.science/hal-00731631 Polar Record, 2007, 43 (4), pp.353-359 [SHS.GEO]Humanities and Social Sciences/Geography info:eu-repo/semantics/article Journal articles 2007 ftunifranchecom 2024-07-08T23:39:52Z ACL International audience The climate and its components (temperature and precipitation) are organised according to different spatial scales that are structured hierarchically. The aim of this paper is to explore the dependence between temperature and deterministic factors at different scales on a 10 km2 study area on the northwestern coast of Svalbard. A GIS was developed which contained three sources of information: temperature, remotely sensed imagery and digital elevation models (DEM), and derived raster data layers. The first layer, temperatures, was acquired at regularly observed temporal intervals from 53 stations. The second layer comprised remotely sensed images (aerial photography and SPOT imagery) and DEM data at 2 m and 20 m resolution, respectively. From these, a windowing procedure was applied to derive several spatial subsets of different spatial resolutions (6, 14, 30, 60, 140, and 300 m). The third layer comprised slope, aspect, and a theoretical solar radiation value derived from the DEM, and a vegetation index derived from the remotely sensed imagery. Linear regressions were then systematically conducted on the datasets, with temperature as the dependent variable, and each of the other data layers as the independent variables. By using graphical analysis, we link the correlation coefficients obtained for each factor, from the smallest spatial resolution (6 m) to the largest resolution (300 m). The results indicated that each explanatory variable and scale brings a specific contribution to changes in temperature. For example, the effect of elevation remains constant for all spatial resolutions, reflecting a quasi 'non-scalar' pattern of this variable. For other variables however, the effect of spatial scale can have a strong effect. In the case of solar radiation, a maximum of explanation was obtained for spatial resolutions of 14 m and 60 m; for vegetation index the optimum contribution was related to the 300 m resolution. Thus, different environment characteristics may have significant ... Article in Journal/Newspaper Polar Record Svalbard Université de Franche-Comté (UFC): HAL |
institution |
Open Polar |
collection |
Université de Franche-Comté (UFC): HAL |
op_collection_id |
ftunifranchecom |
language |
English |
topic |
[SHS.GEO]Humanities and Social Sciences/Geography |
spellingShingle |
[SHS.GEO]Humanities and Social Sciences/Geography Joly, Daniel Brossard, Thierry Contribution of environmental factors to temperature distribution at different resolution levels on the forefield of the Loven Glaciers (Svalbard) |
topic_facet |
[SHS.GEO]Humanities and Social Sciences/Geography |
description |
ACL International audience The climate and its components (temperature and precipitation) are organised according to different spatial scales that are structured hierarchically. The aim of this paper is to explore the dependence between temperature and deterministic factors at different scales on a 10 km2 study area on the northwestern coast of Svalbard. A GIS was developed which contained three sources of information: temperature, remotely sensed imagery and digital elevation models (DEM), and derived raster data layers. The first layer, temperatures, was acquired at regularly observed temporal intervals from 53 stations. The second layer comprised remotely sensed images (aerial photography and SPOT imagery) and DEM data at 2 m and 20 m resolution, respectively. From these, a windowing procedure was applied to derive several spatial subsets of different spatial resolutions (6, 14, 30, 60, 140, and 300 m). The third layer comprised slope, aspect, and a theoretical solar radiation value derived from the DEM, and a vegetation index derived from the remotely sensed imagery. Linear regressions were then systematically conducted on the datasets, with temperature as the dependent variable, and each of the other data layers as the independent variables. By using graphical analysis, we link the correlation coefficients obtained for each factor, from the smallest spatial resolution (6 m) to the largest resolution (300 m). The results indicated that each explanatory variable and scale brings a specific contribution to changes in temperature. For example, the effect of elevation remains constant for all spatial resolutions, reflecting a quasi 'non-scalar' pattern of this variable. For other variables however, the effect of spatial scale can have a strong effect. In the case of solar radiation, a maximum of explanation was obtained for spatial resolutions of 14 m and 60 m; for vegetation index the optimum contribution was related to the 300 m resolution. Thus, different environment characteristics may have significant ... |
author2 |
Théoriser et modéliser pour aménager (UMR 6049) (ThéMA) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) |
format |
Article in Journal/Newspaper |
author |
Joly, Daniel Brossard, Thierry |
author_facet |
Joly, Daniel Brossard, Thierry |
author_sort |
Joly, Daniel |
title |
Contribution of environmental factors to temperature distribution at different resolution levels on the forefield of the Loven Glaciers (Svalbard) |
title_short |
Contribution of environmental factors to temperature distribution at different resolution levels on the forefield of the Loven Glaciers (Svalbard) |
title_full |
Contribution of environmental factors to temperature distribution at different resolution levels on the forefield of the Loven Glaciers (Svalbard) |
title_fullStr |
Contribution of environmental factors to temperature distribution at different resolution levels on the forefield of the Loven Glaciers (Svalbard) |
title_full_unstemmed |
Contribution of environmental factors to temperature distribution at different resolution levels on the forefield of the Loven Glaciers (Svalbard) |
title_sort |
contribution of environmental factors to temperature distribution at different resolution levels on the forefield of the loven glaciers (svalbard) |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00731631 |
genre |
Polar Record Svalbard |
genre_facet |
Polar Record Svalbard |
op_source |
ISSN: 0032-2474 EISSN: 1475-3057 Polar Record https://hal.science/hal-00731631 Polar Record, 2007, 43 (4), pp.353-359 |
op_relation |
hal-00731631 https://hal.science/hal-00731631 |
_version_ |
1810472948279017472 |