Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K
Studies have shown that geodetic Global Navigation Satellite System (GNSS) stations can be used to measure snow depths using GNSS interferometric reflectometry (GNSS-IR). Here, we study the results from a customized GNSS setup installed in March through August 2020 at the Programme for Monitoring of...
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Online Access: | https://orbit.dtu.dk/en/publications/2d86cfe5-4c64-47f3-b52c-f2865a2a8801 https://doi.org/10.3390/rs14112563 https://backend.orbit.dtu.dk/ws/files/280051481/remotesensing_14_02563_v2.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/2d86cfe5-4c64-47f3-b52c-f2865a2a8801 2024-05-19T07:40:43+00:00 Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K Dahl-Jensen, Trine S. Citterio, Michele Jakobsen, Jakob Ahlstrom, Andreas P. Larson, Kristine M. Khan, Shfaqat A. 2022 application/pdf https://orbit.dtu.dk/en/publications/2d86cfe5-4c64-47f3-b52c-f2865a2a8801 https://doi.org/10.3390/rs14112563 https://backend.orbit.dtu.dk/ws/files/280051481/remotesensing_14_02563_v2.pdf eng eng https://orbit.dtu.dk/en/publications/2d86cfe5-4c64-47f3-b52c-f2865a2a8801 info:eu-repo/semantics/openAccess Dahl-Jensen , T S , Citterio , M , Jakobsen , J , Ahlstrom , A P , Larson , K M & Khan , S A 2022 , ' Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K ' , Remote Sensing , vol. 14 , no. 11 , 2563 . https://doi.org/10.3390/rs14112563 Automatic weather stations GNSS-IR Reflectometry Snow depth Greenland article 2022 ftdtupubl https://doi.org/10.3390/rs14112563 2024-04-24T01:06:00Z Studies have shown that geodetic Global Navigation Satellite System (GNSS) stations can be used to measure snow depths using GNSS interferometric reflectometry (GNSS-IR). Here, we study the results from a customized GNSS setup installed in March through August 2020 at the Programme for Monitoring of the Greenland Ice Sheet (PROMICE) automatic weather station NUK-K located on a small glacier outside Nuuk, Greenland. The setup is not optimized for reflectometry purposes. The site is obstructed between 85 and 215 degrees, and as the power supply is limited due to the remote location, the logging time is limited to 3 h per day. We estimate reflector heights using GNSS-IR and compare the results to a sonic ranger also placed on the weather station. We find that the snow melt measured by GNSS-IR is comparable to the melt measured by the sonic ranger. We expect that a period of up to 45 cm difference between the two is likely related to the much larger footprint GNSS-IR and the topography of the area. The uncertainty on the GNSS-IR reflector heights increase from approximately 2 cm for a snow surface to approximately 5 cm for an ice surface. If reflector height during snow free periods are part of the objective of a similar setup, we suggest increasing the logging time to reduce the uncertainty on the daily estimates. Article in Journal/Newspaper glacier Greenland Ice Sheet Nuuk Technical University of Denmark: DTU Orbit Remote Sensing 14 11 2563 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Automatic weather stations GNSS-IR Reflectometry Snow depth Greenland |
spellingShingle |
Automatic weather stations GNSS-IR Reflectometry Snow depth Greenland Dahl-Jensen, Trine S. Citterio, Michele Jakobsen, Jakob Ahlstrom, Andreas P. Larson, Kristine M. Khan, Shfaqat A. Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
topic_facet |
Automatic weather stations GNSS-IR Reflectometry Snow depth Greenland |
description |
Studies have shown that geodetic Global Navigation Satellite System (GNSS) stations can be used to measure snow depths using GNSS interferometric reflectometry (GNSS-IR). Here, we study the results from a customized GNSS setup installed in March through August 2020 at the Programme for Monitoring of the Greenland Ice Sheet (PROMICE) automatic weather station NUK-K located on a small glacier outside Nuuk, Greenland. The setup is not optimized for reflectometry purposes. The site is obstructed between 85 and 215 degrees, and as the power supply is limited due to the remote location, the logging time is limited to 3 h per day. We estimate reflector heights using GNSS-IR and compare the results to a sonic ranger also placed on the weather station. We find that the snow melt measured by GNSS-IR is comparable to the melt measured by the sonic ranger. We expect that a period of up to 45 cm difference between the two is likely related to the much larger footprint GNSS-IR and the topography of the area. The uncertainty on the GNSS-IR reflector heights increase from approximately 2 cm for a snow surface to approximately 5 cm for an ice surface. If reflector height during snow free periods are part of the objective of a similar setup, we suggest increasing the logging time to reduce the uncertainty on the daily estimates. |
format |
Article in Journal/Newspaper |
author |
Dahl-Jensen, Trine S. Citterio, Michele Jakobsen, Jakob Ahlstrom, Andreas P. Larson, Kristine M. Khan, Shfaqat A. |
author_facet |
Dahl-Jensen, Trine S. Citterio, Michele Jakobsen, Jakob Ahlstrom, Andreas P. Larson, Kristine M. Khan, Shfaqat A. |
author_sort |
Dahl-Jensen, Trine S. |
title |
Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
title_short |
Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
title_full |
Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
title_fullStr |
Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
title_full_unstemmed |
Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K |
title_sort |
snow depth measurements by gnss-ir at an automatic weather station, nuk-k |
publishDate |
2022 |
url |
https://orbit.dtu.dk/en/publications/2d86cfe5-4c64-47f3-b52c-f2865a2a8801 https://doi.org/10.3390/rs14112563 https://backend.orbit.dtu.dk/ws/files/280051481/remotesensing_14_02563_v2.pdf |
genre |
glacier Greenland Ice Sheet Nuuk |
genre_facet |
glacier Greenland Ice Sheet Nuuk |
op_source |
Dahl-Jensen , T S , Citterio , M , Jakobsen , J , Ahlstrom , A P , Larson , K M & Khan , S A 2022 , ' Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K ' , Remote Sensing , vol. 14 , no. 11 , 2563 . https://doi.org/10.3390/rs14112563 |
op_relation |
https://orbit.dtu.dk/en/publications/2d86cfe5-4c64-47f3-b52c-f2865a2a8801 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3390/rs14112563 |
container_title |
Remote Sensing |
container_volume |
14 |
container_issue |
11 |
container_start_page |
2563 |
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1799480299497717760 |