A 4.5 Year-Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin
Abstract From May 2014 to September 2018, a laser spectrometer analyzer provided a 4.5 years continuous record of water vapor isotopic composition at Ny-à lesund (8 m above sea level, a.s.l.), Svalbard. It corresponds to the longest data set published in polar regions. A comparison of this data s...
Published in: | Journal of Geophysical Research: Atmospheres |
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Online Access: | https://epic.awi.de/id/eprint/53426/ https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JD032681 https://hdl.handle.net/10013/epic.312c4f44-c0e0-4bb3-87bb-fd4d373b2deb |
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ftawi:oai:epic.awi.de:53426 2023-05-15T14:54:45+02:00 A 4.5 Year-Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin Leroy-Dos Santos, C. Masson-Delmotte, V. Casado, M. Fourré, E. Steen-Larsen, H. C. Maturilli, M. Orsi, A. Berchet, A. Cattani, O. Minster, B. Gherardi, J. Landais, A. 2020 https://epic.awi.de/id/eprint/53426/ https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JD032681 https://hdl.handle.net/10013/epic.312c4f44-c0e0-4bb3-87bb-fd4d373b2deb unknown Leroy-Dos Santos, C. , Masson-Delmotte, V. , Casado, M. orcid:0000-0002-8185-415X , Fourré, E. , Steen-Larsen, H. C. , Maturilli, M. orcid:0000-0001-6818-7383 , Orsi, A. , Berchet, A. , Cattani, O. , Minster, B. , Gherardi, J. and Landais, A. (2020) A 4.5 Year-Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin , Journal of Geophysical Research: Atmospheres, 125 (23), e2020JD032681 . doi:10.1029/2020JD032681 <https://doi.org/10.1029/2020JD032681> , hdl:10013/epic.312c4f44-c0e0-4bb3-87bb-fd4d373b2deb EPIC3Journal of Geophysical Research: Atmospheres, 125(23), pp. e2020JD032681 Article peerRev 2020 ftawi https://doi.org/10.1029/2020JD032681 2021-12-24T15:46:04Z Abstract From May 2014 to September 2018, a laser spectrometer analyzer provided a 4.5 years continuous record of water vapor isotopic composition at Ny-à lesund (8 m above sea level, a.s.l.), Svalbard. It corresponds to the longest data set published in polar regions. A comparison of this data set with a parallel similar data set obtained during 20 days by a second laser spectrometer installed near Mount Zeppelin (474 m a.s.l.) shows that this data set is representative of a regional signal. In addition, the observation of insignificant diurnal cycles in the isotopic signal compared to the strong isotopic signature of synoptic events and the comparison of simultaneous measurements in the vapor and in rain or snow samples lead to the conclusion that our record reflects a large part of the regional dynamics of the atmospheric water cycle driven by large-scale variability. This study focuses on winters dominated by the occurrence of synoptic events associated with humidity peaks. Using statistics and back trajectories calculations, we link high humidity peaks characterized by an anticorrelation between δ18O and d-excess in the water vapor to a rapid shift of air mass source regions from the Arctic to the North Atlantic Ocean below 60°N. On the other hand, correlation between δ18O and d-excess may be associated with a shift of air mass sources within the Arctic. These results demonstrate the added value of long-term water vapor isotopic monitoring to better understand the moisture origin in the Arctic and the atmospheric dynamics. Article in Journal/Newspaper Arctic North Atlantic Svalbard Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Lesund ENVELOPE(8.470,8.470,63.331,63.331) Mount Zeppelin ENVELOPE(-61.480,-61.480,-64.444,-64.444) Svalbard Journal of Geophysical Research: Atmospheres 125 23 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Abstract From May 2014 to September 2018, a laser spectrometer analyzer provided a 4.5 years continuous record of water vapor isotopic composition at Ny-à lesund (8 m above sea level, a.s.l.), Svalbard. It corresponds to the longest data set published in polar regions. A comparison of this data set with a parallel similar data set obtained during 20 days by a second laser spectrometer installed near Mount Zeppelin (474 m a.s.l.) shows that this data set is representative of a regional signal. In addition, the observation of insignificant diurnal cycles in the isotopic signal compared to the strong isotopic signature of synoptic events and the comparison of simultaneous measurements in the vapor and in rain or snow samples lead to the conclusion that our record reflects a large part of the regional dynamics of the atmospheric water cycle driven by large-scale variability. This study focuses on winters dominated by the occurrence of synoptic events associated with humidity peaks. Using statistics and back trajectories calculations, we link high humidity peaks characterized by an anticorrelation between δ18O and d-excess in the water vapor to a rapid shift of air mass source regions from the Arctic to the North Atlantic Ocean below 60°N. On the other hand, correlation between δ18O and d-excess may be associated with a shift of air mass sources within the Arctic. These results demonstrate the added value of long-term water vapor isotopic monitoring to better understand the moisture origin in the Arctic and the atmospheric dynamics. |
format |
Article in Journal/Newspaper |
author |
Leroy-Dos Santos, C. Masson-Delmotte, V. Casado, M. Fourré, E. Steen-Larsen, H. C. Maturilli, M. Orsi, A. Berchet, A. Cattani, O. Minster, B. Gherardi, J. Landais, A. |
spellingShingle |
Leroy-Dos Santos, C. Masson-Delmotte, V. Casado, M. Fourré, E. Steen-Larsen, H. C. Maturilli, M. Orsi, A. Berchet, A. Cattani, O. Minster, B. Gherardi, J. Landais, A. A 4.5 Year-Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin |
author_facet |
Leroy-Dos Santos, C. Masson-Delmotte, V. Casado, M. Fourré, E. Steen-Larsen, H. C. Maturilli, M. Orsi, A. Berchet, A. Cattani, O. Minster, B. Gherardi, J. Landais, A. |
author_sort |
Leroy-Dos Santos, C. |
title |
A 4.5 Year-Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin |
title_short |
A 4.5 Year-Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin |
title_full |
A 4.5 Year-Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin |
title_fullStr |
A 4.5 Year-Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin |
title_full_unstemmed |
A 4.5 Year-Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin |
title_sort |
4.5 year-long record of svalbard water vapor isotopic composition documents winter air mass origin |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/53426/ https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JD032681 https://hdl.handle.net/10013/epic.312c4f44-c0e0-4bb3-87bb-fd4d373b2deb |
long_lat |
ENVELOPE(8.470,8.470,63.331,63.331) ENVELOPE(-61.480,-61.480,-64.444,-64.444) |
geographic |
Arctic Lesund Mount Zeppelin Svalbard |
geographic_facet |
Arctic Lesund Mount Zeppelin Svalbard |
genre |
Arctic North Atlantic Svalbard |
genre_facet |
Arctic North Atlantic Svalbard |
op_source |
EPIC3Journal of Geophysical Research: Atmospheres, 125(23), pp. e2020JD032681 |
op_relation |
Leroy-Dos Santos, C. , Masson-Delmotte, V. , Casado, M. orcid:0000-0002-8185-415X , Fourré, E. , Steen-Larsen, H. C. , Maturilli, M. orcid:0000-0001-6818-7383 , Orsi, A. , Berchet, A. , Cattani, O. , Minster, B. , Gherardi, J. and Landais, A. (2020) A 4.5 Year-Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin , Journal of Geophysical Research: Atmospheres, 125 (23), e2020JD032681 . doi:10.1029/2020JD032681 <https://doi.org/10.1029/2020JD032681> , hdl:10013/epic.312c4f44-c0e0-4bb3-87bb-fd4d373b2deb |
op_doi |
https://doi.org/10.1029/2020JD032681 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
125 |
container_issue |
23 |
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1766326509044236288 |