Mapping snow depth within a tundra ecosystem using multiscale observations and Bayesian methods
This paper compares and integrates different strategies to characterize the variability of end-of-winter snow depth and its relationship to topography in ice-wedge polygon tundra of Arctic Alaska. Snow depth was measured using in situ snow depth probes and estimated using ground-penetrating radar (G...
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Copernicus Publications
2017
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00010412 2023-05-15T15:10:29+02:00 Mapping snow depth within a tundra ecosystem using multiscale observations and Bayesian methods Wainwright, Haruko M. Liljedahl, Anna K. Dafflon, Baptiste Ulrich, Craig Peterson, John E. Gusmeroli, Alessio Hubbard, Susan S. 2017-04 electronic https://doi.org/10.5194/tc-11-857-2017 https://noa.gwlb.de/receive/cop_mods_00010412 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010369/tc-11-857-2017.pdf https://tc.copernicus.org/articles/11/857/2017/tc-11-857-2017.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-857-2017 https://noa.gwlb.de/receive/cop_mods_00010412 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010369/tc-11-857-2017.pdf https://tc.copernicus.org/articles/11/857/2017/tc-11-857-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/tc-11-857-2017 2022-02-08T22:57:03Z This paper compares and integrates different strategies to characterize the variability of end-of-winter snow depth and its relationship to topography in ice-wedge polygon tundra of Arctic Alaska. Snow depth was measured using in situ snow depth probes and estimated using ground-penetrating radar (GPR) surveys and the photogrammetric detection and ranging (phodar) technique with an unmanned aerial system (UAS). We found that GPR data provided high-precision estimates of snow depth (RMSE = 2.9 cm), with a spatial sampling of 10 cm along transects. Phodar-based approaches provided snow depth estimates in a less laborious manner compared to GPR and probing, while yielding a high precision (RMSE = 6.0 cm) and a fine spatial sampling (4 cm × 4 cm). We then investigated the spatial variability of snow depth and its correlation to micro- and macrotopography using the snow-free lidar digital elevation map (DEM) and the wavelet approach. We found that the end-of-winter snow depth was highly variable over short (several meter) distances, and the variability was correlated with microtopography. Microtopographic lows (i.e., troughs and centers of low-centered polygons) were filled in with snow, which resulted in a smooth and even snow surface following macrotopography. We developed and implemented a Bayesian approach to integrate the snow-free lidar DEM and multiscale measurements (probe and GPR) as well as the topographic correlation for estimating snow depth over the landscape. Our approach led to high-precision estimates of snow depth (RMSE = 6.0 cm), at 0.5 m resolution and over the lidar domain (750 m × 700 m). Article in Journal/Newspaper Arctic The Cryosphere Tundra Alaska Niedersächsisches Online-Archiv NOA Arctic The Cryosphere 11 2 857 875 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Wainwright, Haruko M. Liljedahl, Anna K. Dafflon, Baptiste Ulrich, Craig Peterson, John E. Gusmeroli, Alessio Hubbard, Susan S. Mapping snow depth within a tundra ecosystem using multiscale observations and Bayesian methods |
topic_facet |
article Verlagsveröffentlichung |
description |
This paper compares and integrates different strategies to characterize the variability of end-of-winter snow depth and its relationship to topography in ice-wedge polygon tundra of Arctic Alaska. Snow depth was measured using in situ snow depth probes and estimated using ground-penetrating radar (GPR) surveys and the photogrammetric detection and ranging (phodar) technique with an unmanned aerial system (UAS). We found that GPR data provided high-precision estimates of snow depth (RMSE = 2.9 cm), with a spatial sampling of 10 cm along transects. Phodar-based approaches provided snow depth estimates in a less laborious manner compared to GPR and probing, while yielding a high precision (RMSE = 6.0 cm) and a fine spatial sampling (4 cm × 4 cm). We then investigated the spatial variability of snow depth and its correlation to micro- and macrotopography using the snow-free lidar digital elevation map (DEM) and the wavelet approach. We found that the end-of-winter snow depth was highly variable over short (several meter) distances, and the variability was correlated with microtopography. Microtopographic lows (i.e., troughs and centers of low-centered polygons) were filled in with snow, which resulted in a smooth and even snow surface following macrotopography. We developed and implemented a Bayesian approach to integrate the snow-free lidar DEM and multiscale measurements (probe and GPR) as well as the topographic correlation for estimating snow depth over the landscape. Our approach led to high-precision estimates of snow depth (RMSE = 6.0 cm), at 0.5 m resolution and over the lidar domain (750 m × 700 m). |
format |
Article in Journal/Newspaper |
author |
Wainwright, Haruko M. Liljedahl, Anna K. Dafflon, Baptiste Ulrich, Craig Peterson, John E. Gusmeroli, Alessio Hubbard, Susan S. |
author_facet |
Wainwright, Haruko M. Liljedahl, Anna K. Dafflon, Baptiste Ulrich, Craig Peterson, John E. Gusmeroli, Alessio Hubbard, Susan S. |
author_sort |
Wainwright, Haruko M. |
title |
Mapping snow depth within a tundra ecosystem using multiscale observations and Bayesian methods |
title_short |
Mapping snow depth within a tundra ecosystem using multiscale observations and Bayesian methods |
title_full |
Mapping snow depth within a tundra ecosystem using multiscale observations and Bayesian methods |
title_fullStr |
Mapping snow depth within a tundra ecosystem using multiscale observations and Bayesian methods |
title_full_unstemmed |
Mapping snow depth within a tundra ecosystem using multiscale observations and Bayesian methods |
title_sort |
mapping snow depth within a tundra ecosystem using multiscale observations and bayesian methods |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-857-2017 https://noa.gwlb.de/receive/cop_mods_00010412 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010369/tc-11-857-2017.pdf https://tc.copernicus.org/articles/11/857/2017/tc-11-857-2017.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic The Cryosphere Tundra Alaska |
genre_facet |
Arctic The Cryosphere Tundra Alaska |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-857-2017 https://noa.gwlb.de/receive/cop_mods_00010412 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010369/tc-11-857-2017.pdf https://tc.copernicus.org/articles/11/857/2017/tc-11-857-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-11-857-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
2 |
container_start_page |
857 |
op_container_end_page |
875 |
_version_ |
1766341516631998464 |