Variations of oxygen-18 in West Siberian precipitation during the last 50 years
Global warming is associated with large increases in surface air temperature in Siberia. Here, we apply the isotope-enabled atmospheric general circulation model ECHAM5-wiso to explore the potential of water isotope measurements at a recently opened monitoring station in Kourovka (57.04° N, 59.55° E...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00044978 2023-05-15T17:36:50+02:00 Variations of oxygen-18 in West Siberian precipitation during the last 50 years Butzin, M. Werner, M. Masson-Delmotte, V. Risi, C. Frankenberg, C. Gribanov, K. Jouzel, J. Zakharov, V. I. 2014-06 electronic https://doi.org/10.5194/acp-14-5853-2014 https://noa.gwlb.de/receive/cop_mods_00044978 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044598/acp-14-5853-2014.pdf https://acp.copernicus.org/articles/14/5853/2014/acp-14-5853-2014.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-14-5853-2014 https://noa.gwlb.de/receive/cop_mods_00044978 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044598/acp-14-5853-2014.pdf https://acp.copernicus.org/articles/14/5853/2014/acp-14-5853-2014.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2014 ftnonlinearchiv https://doi.org/10.5194/acp-14-5853-2014 2022-02-08T22:39:48Z Global warming is associated with large increases in surface air temperature in Siberia. Here, we apply the isotope-enabled atmospheric general circulation model ECHAM5-wiso to explore the potential of water isotope measurements at a recently opened monitoring station in Kourovka (57.04° N, 59.55° E) in order to successfully trace climate change in western Siberia. Our model is constrained to atmospheric reanalysis fields for the period 1957–2013 to facilitate the comparison with observations of δD in total column water vapour from the GOSAT satellite, and with precipitation δ18O measurements from 15 Russian stations of the Global Network of Isotopes in Precipitation. The model captures the observed Russian climate within reasonable error margins, and displays the observed isotopic gradients associated with increasing continentality and decreasing meridional temperatures. The model also reproduces the observed seasonal cycle of δ18O, which parallels the seasonal cycle of temperature and ranges from −25 ‰ in winter to −5 ‰ in summer. Investigating West Siberian climate and precipitation δ18O variability during the last 50 years, we find long-term increasing trends in temperature and δ18O, while precipitation trends are uncertain. During the last 50 years, winter temperatures have increased by 1.7 °C. The simulated long-term increase of precipitation δ18O is at the detection limit (<1 ‰ per 50 years) but significant. West Siberian climate is characterized by strong interannual variability, which in winter is strongly related to the North Atlantic Oscillation. In winter, regional temperature is the predominant factor controlling δ18O variations on interannual to decadal timescales with a slope of about 0.5 ‰ °C−1. In summer, the interannual variability of δ18O can be attributed to short-term, regional-scale processes such as evaporation and convective precipitation. This finding suggests that precipitation δ18O has the potential to reveal hydrometeorological regime shifts in western Siberia which are otherwise difficult to identify. Focusing on Kourovka, the simulated evolution of temperature, δ18O and, to a smaller extent, precipitation during the last 50 years is synchronous with model results averaged over all of western Siberia, suggesting that this site will be representative to monitor future isotopic changes in the entire region. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Siberia Niedersächsisches Online-Archiv NOA Atmospheric Chemistry and Physics 14 11 5853 5869 |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Butzin, M. Werner, M. Masson-Delmotte, V. Risi, C. Frankenberg, C. Gribanov, K. Jouzel, J. Zakharov, V. I. Variations of oxygen-18 in West Siberian precipitation during the last 50 years |
topic_facet |
article Verlagsveröffentlichung |
description |
Global warming is associated with large increases in surface air temperature in Siberia. Here, we apply the isotope-enabled atmospheric general circulation model ECHAM5-wiso to explore the potential of water isotope measurements at a recently opened monitoring station in Kourovka (57.04° N, 59.55° E) in order to successfully trace climate change in western Siberia. Our model is constrained to atmospheric reanalysis fields for the period 1957–2013 to facilitate the comparison with observations of δD in total column water vapour from the GOSAT satellite, and with precipitation δ18O measurements from 15 Russian stations of the Global Network of Isotopes in Precipitation. The model captures the observed Russian climate within reasonable error margins, and displays the observed isotopic gradients associated with increasing continentality and decreasing meridional temperatures. The model also reproduces the observed seasonal cycle of δ18O, which parallels the seasonal cycle of temperature and ranges from −25 ‰ in winter to −5 ‰ in summer. Investigating West Siberian climate and precipitation δ18O variability during the last 50 years, we find long-term increasing trends in temperature and δ18O, while precipitation trends are uncertain. During the last 50 years, winter temperatures have increased by 1.7 °C. The simulated long-term increase of precipitation δ18O is at the detection limit (<1 ‰ per 50 years) but significant. West Siberian climate is characterized by strong interannual variability, which in winter is strongly related to the North Atlantic Oscillation. In winter, regional temperature is the predominant factor controlling δ18O variations on interannual to decadal timescales with a slope of about 0.5 ‰ °C−1. In summer, the interannual variability of δ18O can be attributed to short-term, regional-scale processes such as evaporation and convective precipitation. This finding suggests that precipitation δ18O has the potential to reveal hydrometeorological regime shifts in western Siberia which are otherwise difficult to identify. Focusing on Kourovka, the simulated evolution of temperature, δ18O and, to a smaller extent, precipitation during the last 50 years is synchronous with model results averaged over all of western Siberia, suggesting that this site will be representative to monitor future isotopic changes in the entire region. |
format |
Article in Journal/Newspaper |
author |
Butzin, M. Werner, M. Masson-Delmotte, V. Risi, C. Frankenberg, C. Gribanov, K. Jouzel, J. Zakharov, V. I. |
author_facet |
Butzin, M. Werner, M. Masson-Delmotte, V. Risi, C. Frankenberg, C. Gribanov, K. Jouzel, J. Zakharov, V. I. |
author_sort |
Butzin, M. |
title |
Variations of oxygen-18 in West Siberian precipitation during the last 50 years |
title_short |
Variations of oxygen-18 in West Siberian precipitation during the last 50 years |
title_full |
Variations of oxygen-18 in West Siberian precipitation during the last 50 years |
title_fullStr |
Variations of oxygen-18 in West Siberian precipitation during the last 50 years |
title_full_unstemmed |
Variations of oxygen-18 in West Siberian precipitation during the last 50 years |
title_sort |
variations of oxygen-18 in west siberian precipitation during the last 50 years |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/acp-14-5853-2014 https://noa.gwlb.de/receive/cop_mods_00044978 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044598/acp-14-5853-2014.pdf https://acp.copernicus.org/articles/14/5853/2014/acp-14-5853-2014.pdf |
genre |
North Atlantic North Atlantic oscillation Siberia |
genre_facet |
North Atlantic North Atlantic oscillation 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-14-5853-2014 https://noa.gwlb.de/receive/cop_mods_00044978 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044598/acp-14-5853-2014.pdf https://acp.copernicus.org/articles/14/5853/2014/acp-14-5853-2014.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-14-5853-2014 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
14 |
container_issue |
11 |
container_start_page |
5853 |
op_container_end_page |
5869 |
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1766136444858925056 |