Case studies of the wind field around Ny-Ålesund, Svalbard, using unmanned aircraft
The wind field in Arctic fjords is strongly influenced by glaciers, local orography and the interaction between sea and land. Ny-Ålesund, an important location for atmospheric research in the Arctic, is located in Kongsfjorden, a fjord with a complex local wind field that influences measurements in...
Published in: | Polar Research |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Norwegian Polar Institute
2022
|
Subjects: | |
Online Access: | https://polarresearch.net/index.php/polar/article/view/7884 https://doi.org/10.33265/polar.v41.7884 |
id |
ftjpolarres:oai:journals.openacademia.net:article/7884 |
---|---|
record_format |
openpolar |
spelling |
ftjpolarres:oai:journals.openacademia.net:article/7884 2023-05-15T14:55:52+02:00 Case studies of the wind field around Ny-Ålesund, Svalbard, using unmanned aircraft Schön, Martin Suomi, Irene Altstädter, Barbara van Kesteren, Bram zum Berge, Kjell Platis, Andreas Wehner, Birgit Lampert, Astrid Bange, Jens 2022-11-15 application/pdf text/html application/epub+zip text/xml https://polarresearch.net/index.php/polar/article/view/7884 https://doi.org/10.33265/polar.v41.7884 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/7884/14996 https://polarresearch.net/index.php/polar/article/view/7884/14993 https://polarresearch.net/index.php/polar/article/view/7884/14994 https://polarresearch.net/index.php/polar/article/view/7884/14995 https://polarresearch.net/index.php/polar/article/view/7884 doi:10.33265/polar.v41.7884 Copyright (c) 2022 Martin Schön, Irene Suomi, Barbara Altstädter, Bram van Kesteren, Kjell zum Berge, Andreas Platis, Birgit Wehner, Astrid Lampert, Jens Bange https://creativecommons.org/licenses/by-nc/4.0 CC-BY-NC Polar Research; Vol. 41 (2022) 1751-8369 Microscale meteorology boundary layer wind measurement aircraft measurement Kongsfjorden Arctic fjord info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftjpolarres https://doi.org/10.33265/polar.v41.7884 2023-01-04T23:49:34Z The wind field in Arctic fjords is strongly influenced by glaciers, local orography and the interaction between sea and land. Ny-Ålesund, an important location for atmospheric research in the Arctic, is located in Kongsfjorden, a fjord with a complex local wind field that influences measurements in Ny-Ålesund. Using wind measurements from UAS (unmanned aircraft systems), ground measurements, radiosonde and reanalysis data, characteristic processes that determine the wind field around Ny-Ålesund are identified and analysed. UAS measurements and ground measurements show, as did previous studies, a south-east flow along Kongsfjorden, dominating the wind conditions in Ny-Ålesund. The wind measured by the UAS in a valley 1 km west of Ny-Ålesund differs from the wind measured at the ground in Ny-Ålesund. In this valley, we identify a small-scale catabatic flow from the south to south-west as the cause for this difference. Case studies show a backing (counterclockwise rotation with increasing altitude) of the wind direction close to the ground. A katabatic flow is measured near the ground, with a horizontal wind speed up to 5 m s-1. Both the larger-scale south-east flow along the fjord and the local katabatic flows lead to a highly variable wind field, so ground measurements and weather models alone give an incomplete picture. The comparison of UAS measurements, ground measurements and weather conditions analysis using a synoptic model is used to show that the effects measured in the case studies play a role in the Ny-Ålesund wind field in spring. Article in Journal/Newspaper Arctic Kongsfjord* Kongsfjorden Ny Ålesund Ny-Ålesund Polar Research Svalbard Polar Research (E-Journal) Arctic Ny-Ålesund Svalbard Polar Research |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Microscale meteorology boundary layer wind measurement aircraft measurement Kongsfjorden Arctic fjord |
spellingShingle |
Microscale meteorology boundary layer wind measurement aircraft measurement Kongsfjorden Arctic fjord Schön, Martin Suomi, Irene Altstädter, Barbara van Kesteren, Bram zum Berge, Kjell Platis, Andreas Wehner, Birgit Lampert, Astrid Bange, Jens Case studies of the wind field around Ny-Ålesund, Svalbard, using unmanned aircraft |
topic_facet |
Microscale meteorology boundary layer wind measurement aircraft measurement Kongsfjorden Arctic fjord |
description |
The wind field in Arctic fjords is strongly influenced by glaciers, local orography and the interaction between sea and land. Ny-Ålesund, an important location for atmospheric research in the Arctic, is located in Kongsfjorden, a fjord with a complex local wind field that influences measurements in Ny-Ålesund. Using wind measurements from UAS (unmanned aircraft systems), ground measurements, radiosonde and reanalysis data, characteristic processes that determine the wind field around Ny-Ålesund are identified and analysed. UAS measurements and ground measurements show, as did previous studies, a south-east flow along Kongsfjorden, dominating the wind conditions in Ny-Ålesund. The wind measured by the UAS in a valley 1 km west of Ny-Ålesund differs from the wind measured at the ground in Ny-Ålesund. In this valley, we identify a small-scale catabatic flow from the south to south-west as the cause for this difference. Case studies show a backing (counterclockwise rotation with increasing altitude) of the wind direction close to the ground. A katabatic flow is measured near the ground, with a horizontal wind speed up to 5 m s-1. Both the larger-scale south-east flow along the fjord and the local katabatic flows lead to a highly variable wind field, so ground measurements and weather models alone give an incomplete picture. The comparison of UAS measurements, ground measurements and weather conditions analysis using a synoptic model is used to show that the effects measured in the case studies play a role in the Ny-Ålesund wind field in spring. |
format |
Article in Journal/Newspaper |
author |
Schön, Martin Suomi, Irene Altstädter, Barbara van Kesteren, Bram zum Berge, Kjell Platis, Andreas Wehner, Birgit Lampert, Astrid Bange, Jens |
author_facet |
Schön, Martin Suomi, Irene Altstädter, Barbara van Kesteren, Bram zum Berge, Kjell Platis, Andreas Wehner, Birgit Lampert, Astrid Bange, Jens |
author_sort |
Schön, Martin |
title |
Case studies of the wind field around Ny-Ålesund, Svalbard, using unmanned aircraft |
title_short |
Case studies of the wind field around Ny-Ålesund, Svalbard, using unmanned aircraft |
title_full |
Case studies of the wind field around Ny-Ålesund, Svalbard, using unmanned aircraft |
title_fullStr |
Case studies of the wind field around Ny-Ålesund, Svalbard, using unmanned aircraft |
title_full_unstemmed |
Case studies of the wind field around Ny-Ålesund, Svalbard, using unmanned aircraft |
title_sort |
case studies of the wind field around ny-ålesund, svalbard, using unmanned aircraft |
publisher |
Norwegian Polar Institute |
publishDate |
2022 |
url |
https://polarresearch.net/index.php/polar/article/view/7884 https://doi.org/10.33265/polar.v41.7884 |
geographic |
Arctic Ny-Ålesund Svalbard |
geographic_facet |
Arctic Ny-Ålesund Svalbard |
genre |
Arctic Kongsfjord* Kongsfjorden Ny Ålesund Ny-Ålesund Polar Research Svalbard |
genre_facet |
Arctic Kongsfjord* Kongsfjorden Ny Ålesund Ny-Ålesund Polar Research Svalbard |
op_source |
Polar Research; Vol. 41 (2022) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/7884/14996 https://polarresearch.net/index.php/polar/article/view/7884/14993 https://polarresearch.net/index.php/polar/article/view/7884/14994 https://polarresearch.net/index.php/polar/article/view/7884/14995 https://polarresearch.net/index.php/polar/article/view/7884 doi:10.33265/polar.v41.7884 |
op_rights |
Copyright (c) 2022 Martin Schön, Irene Suomi, Barbara Altstädter, Bram van Kesteren, Kjell zum Berge, Andreas Platis, Birgit Wehner, Astrid Lampert, Jens Bange https://creativecommons.org/licenses/by-nc/4.0 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.33265/polar.v41.7884 |
container_title |
Polar Research |
_version_ |
1766327873673625600 |