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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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 |
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Niedersächsisches Online-Archiv NOA |
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English |
topic |
article Verlagsveröffentlichung |
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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 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 |
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 |
op_container_end_page |
10511 |
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1766332839574372352 |