How accurate were the measured trend of precipitation in Ny-Ålesund (Svalbard) in the last 40 years?
International audience The Svalbard archipelago, in the Atlantic-Arctic region, was affected by a strong warming in the last decades. As a consequence, major rainfall events occurred in the last years, even during the boreal winter, with major impacts for the Arctic ecosystem. Ny-Ålesund, in the nor...
Main Authors: | , , |
---|---|
Other Authors: | , , , |
Format: | Conference Object |
Language: | English |
Published: |
HAL CCSD
2023
|
Subjects: | |
Online Access: | https://hal.science/hal-04544331 https://hal.science/hal-04544331/document https://hal.science/hal-04544331/file/Presentation_IUGG.pdf https://doi.org/10.57757/IUGG23-1569 |
id |
ftinraparis:oai:HAL:hal-04544331v1 |
---|---|
record_format |
openpolar |
spelling |
ftinraparis:oai:HAL:hal-04544331v1 2024-09-15T17:55:15+00:00 How accurate were the measured trend of precipitation in Ny-Ålesund (Svalbard) in the last 40 years? Champagne, Olivier Zolina, Olga Jacobi, Hans-Werner Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) GFZ German Research Centre for Geosciences Berlin, Germany 2023-07-11 https://hal.science/hal-04544331 https://hal.science/hal-04544331/document https://hal.science/hal-04544331/file/Presentation_IUGG.pdf https://doi.org/10.57757/IUGG23-1569 en eng HAL CCSD GFZ German Research Centre for Geosciences info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-1569 hal-04544331 https://hal.science/hal-04544331 https://hal.science/hal-04544331/document https://hal.science/hal-04544331/file/Presentation_IUGG.pdf doi:10.57757/IUGG23-1569 http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) https://hal.science/hal-04544331 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG), GFZ German Research Centre for Geosciences, Jul 2023, Berlin, Germany. ⟨10.57757/IUGG23-1569⟩ [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology info:eu-repo/semantics/conferenceObject Conference papers 2023 ftinraparis https://doi.org/10.57757/IUGG23-1569 2024-06-25T14:42:17Z International audience The Svalbard archipelago, in the Atlantic-Arctic region, was affected by a strong warming in the last decades. As a consequence, major rainfall events occurred in the last years, even during the boreal winter, with major impacts for the Arctic ecosystem. Ny-Ålesund, in the northwest part of Svalbard, is known as the northernmost town of the world and hosts major research works for Svalbard and the Arctic. In this context, the long meteorological records (1975-) from Ny-Ålesund are widely used by many research. However, the amount of precipitation recorded by this station is subjected to large biases, mainly due to a snow undercatch during windy conditions. The purpose of this study is to investigate if the measured trend of precipitation observed in Ny-Ålesund in the 1975-2022 period was real, or if it can be due to a rain gauge undercatch. In this work, we selected several correction factors developed in the last decades, based on local wind and temperature. We applied these corrections to the 12-hourly precipitation data from Ny-Ålesund weather station in the 1975-2022 period. For each correction method, we calculated trends for nine periods of 40 years (1975-2014 to 1983-2022). The results show that despite an actual decrease of precipitation in the last few years, the strong recent warming increased the rainfall to snowfall ratio, artificially enhancing the most recent observed trends of precipitation. This study shows the need of applying corrections factors when using rain gauge data, especially in periods of rapid interannual change of weather conditions. Conference Object Atlantic Arctic Atlantic-Arctic Ny Ålesund Ny-Ålesund Svalbard Institut National de la Recherche Agronomique: ProdINRA |
institution |
Open Polar |
collection |
Institut National de la Recherche Agronomique: ProdINRA |
op_collection_id |
ftinraparis |
language |
English |
topic |
[SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
spellingShingle |
[SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology Champagne, Olivier Zolina, Olga Jacobi, Hans-Werner How accurate were the measured trend of precipitation in Ny-Ålesund (Svalbard) in the last 40 years? |
topic_facet |
[SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
description |
International audience The Svalbard archipelago, in the Atlantic-Arctic region, was affected by a strong warming in the last decades. As a consequence, major rainfall events occurred in the last years, even during the boreal winter, with major impacts for the Arctic ecosystem. Ny-Ålesund, in the northwest part of Svalbard, is known as the northernmost town of the world and hosts major research works for Svalbard and the Arctic. In this context, the long meteorological records (1975-) from Ny-Ålesund are widely used by many research. However, the amount of precipitation recorded by this station is subjected to large biases, mainly due to a snow undercatch during windy conditions. The purpose of this study is to investigate if the measured trend of precipitation observed in Ny-Ålesund in the 1975-2022 period was real, or if it can be due to a rain gauge undercatch. In this work, we selected several correction factors developed in the last decades, based on local wind and temperature. We applied these corrections to the 12-hourly precipitation data from Ny-Ålesund weather station in the 1975-2022 period. For each correction method, we calculated trends for nine periods of 40 years (1975-2014 to 1983-2022). The results show that despite an actual decrease of precipitation in the last few years, the strong recent warming increased the rainfall to snowfall ratio, artificially enhancing the most recent observed trends of precipitation. This study shows the need of applying corrections factors when using rain gauge data, especially in periods of rapid interannual change of weather conditions. |
author2 |
Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) GFZ German Research Centre for Geosciences |
format |
Conference Object |
author |
Champagne, Olivier Zolina, Olga Jacobi, Hans-Werner |
author_facet |
Champagne, Olivier Zolina, Olga Jacobi, Hans-Werner |
author_sort |
Champagne, Olivier |
title |
How accurate were the measured trend of precipitation in Ny-Ålesund (Svalbard) in the last 40 years? |
title_short |
How accurate were the measured trend of precipitation in Ny-Ålesund (Svalbard) in the last 40 years? |
title_full |
How accurate were the measured trend of precipitation in Ny-Ålesund (Svalbard) in the last 40 years? |
title_fullStr |
How accurate were the measured trend of precipitation in Ny-Ålesund (Svalbard) in the last 40 years? |
title_full_unstemmed |
How accurate were the measured trend of precipitation in Ny-Ålesund (Svalbard) in the last 40 years? |
title_sort |
how accurate were the measured trend of precipitation in ny-ålesund (svalbard) in the last 40 years? |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04544331 https://hal.science/hal-04544331/document https://hal.science/hal-04544331/file/Presentation_IUGG.pdf https://doi.org/10.57757/IUGG23-1569 |
op_coverage |
Berlin, Germany |
genre |
Atlantic Arctic Atlantic-Arctic Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
Atlantic Arctic Atlantic-Arctic Ny Ålesund Ny-Ålesund Svalbard |
op_source |
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) https://hal.science/hal-04544331 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG), GFZ German Research Centre for Geosciences, Jul 2023, Berlin, Germany. ⟨10.57757/IUGG23-1569⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-1569 hal-04544331 https://hal.science/hal-04544331 https://hal.science/hal-04544331/document https://hal.science/hal-04544331/file/Presentation_IUGG.pdf doi:10.57757/IUGG23-1569 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.57757/IUGG23-1569 |
_version_ |
1810431566082473984 |