USING SMOS PASSIVE MICROWAVE DATA TO DEVELOP SMAP FREEZE/THAW ALGORITHMS ADAPTED FOR THE CANADIAN SUBARCTIC
Seasonal terrestrial Freeze/Thaw cycle in Northern Quebec Tundra (Nunavik) was determined and evaluated with passive microwave observations. SMOS time series data were analyzed to examine seasonal variations of soil freezing, and to assess the impact of land cover on the Freeze/Thaw cycle. Furthermo...
Published in: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2015
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Online Access: | https://doi.org/10.5194/isprsarchives-XL-1-W5-365-2015 https://noa.gwlb.de/receive/cop_mods_00014488 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014443/isprsarchives-XL-1-W5-365-2015.pdf https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-1-W5/365/2015/isprsarchives-XL-1-W5-365-2015.pdf |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00014488 2023-05-15T18:28:12+02:00 USING SMOS PASSIVE MICROWAVE DATA TO DEVELOP SMAP FREEZE/THAW ALGORITHMS ADAPTED FOR THE CANADIAN SUBARCTIC Kalantari, P. Bernier, M. McDonal, K. C. Poulin, J. 2015-12 electronic https://doi.org/10.5194/isprsarchives-XL-1-W5-365-2015 https://noa.gwlb.de/receive/cop_mods_00014488 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014443/isprsarchives-XL-1-W5-365-2015.pdf https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-1-W5/365/2015/isprsarchives-XL-1-W5-365-2015.pdf eng eng Copernicus Publications ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences -- http://www.isprs.org/publications/archives.aspx -- 2194-9034 https://doi.org/10.5194/isprsarchives-XL-1-W5-365-2015 https://noa.gwlb.de/receive/cop_mods_00014488 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014443/isprsarchives-XL-1-W5-365-2015.pdf https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-1-W5/365/2015/isprsarchives-XL-1-W5-365-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/isprsarchives-XL-1-W5-365-2015 2022-02-08T22:55:07Z Seasonal terrestrial Freeze/Thaw cycle in Northern Quebec Tundra (Nunavik) was determined and evaluated with passive microwave observations. SMOS time series data were analyzed to examine seasonal variations of soil freezing, and to assess the impact of land cover on the Freeze/Thaw cycle. Furthermore, the soil freezing maps derived from SMOS observations were compared to field survey data in the region near Umiujaq. The objective is to develop algorithms to follow the seasonal cycle of freezing and thawing of the soil adapted to Canadian subarctic, a territory with a high complexity of land cover (vegetation, soil, and water bodies). Field data shows that soil freezing and thawing dates vary much spatially at the local scale in the Boreal Forest and the Tundra. The results showed a satisfactory pixel by pixel mapping for the daily soil state monitoring with a > 80% success rate with in situ data for the HH and VV polarizations, and for different land cover. The average accuracies are 80% and 84% for the soil freeze period, and soil thaw period respectively. The comparison is limited because of the small number of validation pixels. Article in Journal/Newspaper Subarctic Tundra Umiujaq Nunavik Niedersächsisches Online-Archiv NOA Nunavik Umiujaq ENVELOPE(-76.549,-76.549,56.553,56.553) The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-1/W5 365 368 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Kalantari, P. Bernier, M. McDonal, K. C. Poulin, J. USING SMOS PASSIVE MICROWAVE DATA TO DEVELOP SMAP FREEZE/THAW ALGORITHMS ADAPTED FOR THE CANADIAN SUBARCTIC |
topic_facet |
article Verlagsveröffentlichung |
description |
Seasonal terrestrial Freeze/Thaw cycle in Northern Quebec Tundra (Nunavik) was determined and evaluated with passive microwave observations. SMOS time series data were analyzed to examine seasonal variations of soil freezing, and to assess the impact of land cover on the Freeze/Thaw cycle. Furthermore, the soil freezing maps derived from SMOS observations were compared to field survey data in the region near Umiujaq. The objective is to develop algorithms to follow the seasonal cycle of freezing and thawing of the soil adapted to Canadian subarctic, a territory with a high complexity of land cover (vegetation, soil, and water bodies). Field data shows that soil freezing and thawing dates vary much spatially at the local scale in the Boreal Forest and the Tundra. The results showed a satisfactory pixel by pixel mapping for the daily soil state monitoring with a > 80% success rate with in situ data for the HH and VV polarizations, and for different land cover. The average accuracies are 80% and 84% for the soil freeze period, and soil thaw period respectively. The comparison is limited because of the small number of validation pixels. |
format |
Article in Journal/Newspaper |
author |
Kalantari, P. Bernier, M. McDonal, K. C. Poulin, J. |
author_facet |
Kalantari, P. Bernier, M. McDonal, K. C. Poulin, J. |
author_sort |
Kalantari, P. |
title |
USING SMOS PASSIVE MICROWAVE DATA TO DEVELOP SMAP FREEZE/THAW ALGORITHMS ADAPTED FOR THE CANADIAN SUBARCTIC |
title_short |
USING SMOS PASSIVE MICROWAVE DATA TO DEVELOP SMAP FREEZE/THAW ALGORITHMS ADAPTED FOR THE CANADIAN SUBARCTIC |
title_full |
USING SMOS PASSIVE MICROWAVE DATA TO DEVELOP SMAP FREEZE/THAW ALGORITHMS ADAPTED FOR THE CANADIAN SUBARCTIC |
title_fullStr |
USING SMOS PASSIVE MICROWAVE DATA TO DEVELOP SMAP FREEZE/THAW ALGORITHMS ADAPTED FOR THE CANADIAN SUBARCTIC |
title_full_unstemmed |
USING SMOS PASSIVE MICROWAVE DATA TO DEVELOP SMAP FREEZE/THAW ALGORITHMS ADAPTED FOR THE CANADIAN SUBARCTIC |
title_sort |
using smos passive microwave data to develop smap freeze/thaw algorithms adapted for the canadian subarctic |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/isprsarchives-XL-1-W5-365-2015 https://noa.gwlb.de/receive/cop_mods_00014488 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014443/isprsarchives-XL-1-W5-365-2015.pdf https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-1-W5/365/2015/isprsarchives-XL-1-W5-365-2015.pdf |
long_lat |
ENVELOPE(-76.549,-76.549,56.553,56.553) |
geographic |
Nunavik Umiujaq |
geographic_facet |
Nunavik Umiujaq |
genre |
Subarctic Tundra Umiujaq Nunavik |
genre_facet |
Subarctic Tundra Umiujaq Nunavik |
op_relation |
ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences -- http://www.isprs.org/publications/archives.aspx -- 2194-9034 https://doi.org/10.5194/isprsarchives-XL-1-W5-365-2015 https://noa.gwlb.de/receive/cop_mods_00014488 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014443/isprsarchives-XL-1-W5-365-2015.pdf https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-1-W5/365/2015/isprsarchives-XL-1-W5-365-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/isprsarchives-XL-1-W5-365-2015 |
container_title |
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
container_volume |
XL-1/W5 |
container_start_page |
365 |
op_container_end_page |
368 |
_version_ |
1766210571368136704 |