Design of a scanning laser meter for monitoring the spatio-temporal evolution of snow depth and its application in the Alps and in Antarctica
Although both the temporal and spatial variations of the snow depth are usually of interest for numerous applications, available measurement techniques are either space-oriented (e.g. terrestrial laser scans) or time-oriented (e.g. ultrasonic ranging probe). Because of snow heterogeneity, measuring...
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Copernicus Publications
2016
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00011848 2023-05-15T13:34:49+02:00 Design of a scanning laser meter for monitoring the spatio-temporal evolution of snow depth and its application in the Alps and in Antarctica Picard, Ghislain Arnaud, Laurent Panel, Jean-Michel Morin, Samuel 2016-07 electronic https://doi.org/10.5194/tc-10-1495-2016 https://noa.gwlb.de/receive/cop_mods_00011848 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011805/tc-10-1495-2016.pdf https://tc.copernicus.org/articles/10/1495/2016/tc-10-1495-2016.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-10-1495-2016 https://noa.gwlb.de/receive/cop_mods_00011848 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011805/tc-10-1495-2016.pdf https://tc.copernicus.org/articles/10/1495/2016/tc-10-1495-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/tc-10-1495-2016 2022-02-08T22:56:20Z Although both the temporal and spatial variations of the snow depth are usually of interest for numerous applications, available measurement techniques are either space-oriented (e.g. terrestrial laser scans) or time-oriented (e.g. ultrasonic ranging probe). Because of snow heterogeneity, measuring depth in a single point is insufficient to provide accurate and representative estimates. We present a cost-effective automatic instrument to acquire spatio-temporal variations of snow depth. The device comprises a laser meter mounted on a 2-axis stage and can scan ≈ 200 000 points over an area of 100–200 m2 in 4 h. Two instruments, installed in Antarctica (Dome C) and the French Alps (Col de Porte), have been operating continuously and unattended over 2015 with a success rate of 65 and 90 % respectively. The precision of single point measurements and long-term stability were evaluated to be about 1 cm and the accuracy to be 5 cm or better. The spatial variability in the scanned area reached 7–10 cm (root mean square) at both sites, which means that the number of measurements is sufficient to average out the spatial variability and yield precise mean snow depth. With such high precision, it was possible for the first time at Dome C to (1) observe a 3-month period of regular and slow increase of snow depth without apparent link to snowfalls and (2) highlight that most of the annual accumulation stems from a single event although several snowfall and strong wind events were predicted by the ERA-Interim reanalysis. Finally the paper discusses the benefit of laser scanning compared to multiplying single-point sensors in the context of monitoring snow depth. Article in Journal/Newspaper Antarc* Antarctica The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 10 4 1495 1511 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Picard, Ghislain Arnaud, Laurent Panel, Jean-Michel Morin, Samuel Design of a scanning laser meter for monitoring the spatio-temporal evolution of snow depth and its application in the Alps and in Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
Although both the temporal and spatial variations of the snow depth are usually of interest for numerous applications, available measurement techniques are either space-oriented (e.g. terrestrial laser scans) or time-oriented (e.g. ultrasonic ranging probe). Because of snow heterogeneity, measuring depth in a single point is insufficient to provide accurate and representative estimates. We present a cost-effective automatic instrument to acquire spatio-temporal variations of snow depth. The device comprises a laser meter mounted on a 2-axis stage and can scan ≈ 200 000 points over an area of 100–200 m2 in 4 h. Two instruments, installed in Antarctica (Dome C) and the French Alps (Col de Porte), have been operating continuously and unattended over 2015 with a success rate of 65 and 90 % respectively. The precision of single point measurements and long-term stability were evaluated to be about 1 cm and the accuracy to be 5 cm or better. The spatial variability in the scanned area reached 7–10 cm (root mean square) at both sites, which means that the number of measurements is sufficient to average out the spatial variability and yield precise mean snow depth. With such high precision, it was possible for the first time at Dome C to (1) observe a 3-month period of regular and slow increase of snow depth without apparent link to snowfalls and (2) highlight that most of the annual accumulation stems from a single event although several snowfall and strong wind events were predicted by the ERA-Interim reanalysis. Finally the paper discusses the benefit of laser scanning compared to multiplying single-point sensors in the context of monitoring snow depth. |
format |
Article in Journal/Newspaper |
author |
Picard, Ghislain Arnaud, Laurent Panel, Jean-Michel Morin, Samuel |
author_facet |
Picard, Ghislain Arnaud, Laurent Panel, Jean-Michel Morin, Samuel |
author_sort |
Picard, Ghislain |
title |
Design of a scanning laser meter for monitoring the spatio-temporal evolution of snow depth and its application in the Alps and in Antarctica |
title_short |
Design of a scanning laser meter for monitoring the spatio-temporal evolution of snow depth and its application in the Alps and in Antarctica |
title_full |
Design of a scanning laser meter for monitoring the spatio-temporal evolution of snow depth and its application in the Alps and in Antarctica |
title_fullStr |
Design of a scanning laser meter for monitoring the spatio-temporal evolution of snow depth and its application in the Alps and in Antarctica |
title_full_unstemmed |
Design of a scanning laser meter for monitoring the spatio-temporal evolution of snow depth and its application in the Alps and in Antarctica |
title_sort |
design of a scanning laser meter for monitoring the spatio-temporal evolution of snow depth and its application in the alps and in antarctica |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-1495-2016 https://noa.gwlb.de/receive/cop_mods_00011848 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011805/tc-10-1495-2016.pdf https://tc.copernicus.org/articles/10/1495/2016/tc-10-1495-2016.pdf |
genre |
Antarc* Antarctica The Cryosphere |
genre_facet |
Antarc* Antarctica The Cryosphere |
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-10-1495-2016 https://noa.gwlb.de/receive/cop_mods_00011848 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011805/tc-10-1495-2016.pdf https://tc.copernicus.org/articles/10/1495/2016/tc-10-1495-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-10-1495-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
4 |
container_start_page |
1495 |
op_container_end_page |
1511 |
_version_ |
1766057807979741184 |