Moisture origin as a driver of temporal variabilities of the water vapour isotopic composition in the Lena River Delta, Siberia

In the context of the Arctic amplification of climate change affecting the regional atmospheric hydrological cycle, it is crucial to characterize the present-day moisture sources of the Arctic. The isotopic composition is an important tool to enhance our understanding of the drivers of the hydrologi...

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Published in:Atmospheric Chemistry and Physics
Main Authors: Bonne, Jean-Louis, Meyer, Hanno, Behrens, Melanie, Boike, Julia, Kipfstuhl, Sepp, Rabe, Benjamin, Schmidt, Toni, Schönicke, Lutz, Steen-Larsen, Hans Christian, Werner, Martin
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2020
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Online Access:https://doi.org/10.5194/acp-20-10493-2020
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spelling ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00053028 2023-05-15T15:00:46+02:00 Moisture origin as a driver of temporal variabilities of the water vapour isotopic composition in the Lena River Delta, Siberia Bonne, Jean-Louis Meyer, Hanno Behrens, Melanie Boike, Julia Kipfstuhl, Sepp Rabe, Benjamin Schmidt, Toni Schönicke, Lutz Steen-Larsen, Hans Christian Werner, Martin 2020-09 electronic https://doi.org/10.5194/acp-20-10493-2020 https://noa.gwlb.de/receive/cop_mods_00053028 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00052681/acp-20-10493-2020.pdf https://acp.copernicus.org/articles/20/10493/2020/acp-20-10493-2020.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-20-10493-2020 https://noa.gwlb.de/receive/cop_mods_00053028 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00052681/acp-20-10493-2020.pdf https://acp.copernicus.org/articles/20/10493/2020/acp-20-10493-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/acp-20-10493-2020 2022-02-08T22:35:40Z In the context of the Arctic amplification of climate change affecting the regional atmospheric hydrological cycle, it is crucial to characterize the present-day moisture sources of the Arctic. The isotopic composition is an important tool to enhance our understanding of the drivers of the hydrological cycle due to the different molecular characteristics of water stable isotopes during phase change. This study introduces 2 years of continuous in situ water vapour and precipitation isotopic observations conducted since July 2015 in the eastern Siberian Lena delta at the research station on Samoylov Island. The vapour isotopic signals are dominated by variations at seasonal and synoptic timescales. Diurnal variations of the vapour isotopic signals are masked by synoptic variations, indicating low variations of the amplitude of local sources at the diurnal scale in winter, summer and autumn. Low-amplitude diurnal variations in spring may indicate exchange of moisture between the atmosphere and the snow-covered surface. Moisture source diagnostics based on semi-Lagrangian backward trajectories reveal that different air mass origins have contrasting contributions to the moisture budget of the Lena delta region. At the seasonal scale, the distance from the net moisture sources to the arrival site strongly varies. During the coldest months, no contribution from local secondary evaporation is observed. Variations of the vapour isotopic composition during the cold season on the synoptic timescale are strongly related to moisture source regions and variations in atmospheric transport: warm and isotopically enriched moist air is linked to fast transport from the Atlantic sector, while dry and cold air with isotopically depleted moisture is generally associated with air masses moving slowly over northern Eurasia. Article in Journal/Newspaper Arctic Climate change lena delta lena river Siberia Niedersächsisches Online-Archiv NOA Arctic Atmospheric Chemistry and Physics 20 17 10493 10511
institution Open Polar
collection Niedersächsisches Online-Archiv NOA
op_collection_id ftnonlinearchiv
language English
topic article
Verlagsveröffentlichung
spellingShingle article
Verlagsveröffentlichung
Bonne, Jean-Louis
Meyer, Hanno
Behrens, Melanie
Boike, Julia
Kipfstuhl, Sepp
Rabe, Benjamin
Schmidt, Toni
Schönicke, Lutz
Steen-Larsen, Hans Christian
Werner, Martin
Moisture origin as a driver of temporal variabilities of the water vapour isotopic composition in the Lena River Delta, Siberia
topic_facet article
Verlagsveröffentlichung
description In the context of the Arctic amplification of climate change affecting the regional atmospheric hydrological cycle, it is crucial to characterize the present-day moisture sources of the Arctic. The isotopic composition is an important tool to enhance our understanding of the drivers of the hydrological cycle due to the different molecular characteristics of water stable isotopes during phase change. This study introduces 2 years of continuous in situ water vapour and precipitation isotopic observations conducted since July 2015 in the eastern Siberian Lena delta at the research station on Samoylov Island. The vapour isotopic signals are dominated by variations at seasonal and synoptic timescales. Diurnal variations of the vapour isotopic signals are masked by synoptic variations, indicating low variations of the amplitude of local sources at the diurnal scale in winter, summer and autumn. Low-amplitude diurnal variations in spring may indicate exchange of moisture between the atmosphere and the snow-covered surface. Moisture source diagnostics based on semi-Lagrangian backward trajectories reveal that different air mass origins have contrasting contributions to the moisture budget of the Lena delta region. At the seasonal scale, the distance from the net moisture sources to the arrival site strongly varies. During the coldest months, no contribution from local secondary evaporation is observed. Variations of the vapour isotopic composition during the cold season on the synoptic timescale are strongly related to moisture source regions and variations in atmospheric transport: warm and isotopically enriched moist air is linked to fast transport from the Atlantic sector, while dry and cold air with isotopically depleted moisture is generally associated with air masses moving slowly over northern Eurasia.
format Article in Journal/Newspaper
author Bonne, Jean-Louis
Meyer, Hanno
Behrens, Melanie
Boike, Julia
Kipfstuhl, Sepp
Rabe, Benjamin
Schmidt, Toni
Schönicke, Lutz
Steen-Larsen, Hans Christian
Werner, Martin
author_facet Bonne, Jean-Louis
Meyer, Hanno
Behrens, Melanie
Boike, Julia
Kipfstuhl, Sepp
Rabe, Benjamin
Schmidt, Toni
Schönicke, Lutz
Steen-Larsen, Hans Christian
Werner, Martin
author_sort Bonne, Jean-Louis
title Moisture origin as a driver of temporal variabilities of the water vapour isotopic composition in the Lena River Delta, Siberia
title_short Moisture origin as a driver of temporal variabilities of the water vapour isotopic composition in the Lena River Delta, Siberia
title_full Moisture origin as a driver of temporal variabilities of the water vapour isotopic composition in the Lena River Delta, Siberia
title_fullStr Moisture origin as a driver of temporal variabilities of the water vapour isotopic composition in the Lena River Delta, Siberia
title_full_unstemmed Moisture origin as a driver of temporal variabilities of the water vapour isotopic composition in the Lena River Delta, Siberia
title_sort moisture origin as a driver of temporal variabilities of the water vapour isotopic composition in the lena river delta, siberia
publisher Copernicus Publications
publishDate 2020
url https://doi.org/10.5194/acp-20-10493-2020
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https://acp.copernicus.org/articles/20/10493/2020/acp-20-10493-2020.pdf
geographic Arctic
geographic_facet Arctic
genre Arctic
Climate change
lena delta
lena river
Siberia
genre_facet Arctic
Climate change
lena delta
lena river
Siberia
op_relation Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324
https://doi.org/10.5194/acp-20-10493-2020
https://noa.gwlb.de/receive/cop_mods_00053028
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00052681/acp-20-10493-2020.pdf
https://acp.copernicus.org/articles/20/10493/2020/acp-20-10493-2020.pdf
op_rights https://creativecommons.org/licenses/by/4.0/
uneingeschränkt
info:eu-repo/semantics/openAccess
op_rightsnorm CC-BY
op_doi https://doi.org/10.5194/acp-20-10493-2020
container_title Atmospheric Chemistry and Physics
container_volume 20
container_issue 17
container_start_page 10493
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