Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet
We present here surface water vapor isotopic measurements conducted from June to August 2010 at the NEEM (North Greenland Eemian Drilling Project) camp, NW Greenland (77.45° N, 51.05° W, 2484 m a.s.l.). Measurements were conducted at 9 different heights from 0.1 m to 13.5 m above the snow surface us...
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/67919 2023-05-15T15:08:42+02:00 Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet Steen-Larsen, Hans C. Johnsen, S.J. Masson-Delmotte, Valérie Stenni, Barbara Risi, C. Sodemann, Harald Balslev-Clausen, David Blunier, Thomas Dahl-Jensen, Dorthe Ellehøj, Mads D. Falourd, S. Grindsted, Aslak Gkinis, Vasileios Jouzel, J. Popp, Trevor Sheldon, Simon Simonsen, Sebastian B. Sjolte, Jesper Steffensen, Jørgen P. Sperlich, Peter Sveinbjörnsdottír, Árný E. Vinther, Bo M. White, James W.C. 2013 application/application/pdf https://hdl.handle.net/20.500.11850/67919 https://doi.org/10.3929/ethz-b-000067919 en eng Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-13-4815-2013 info:eu-repo/semantics/altIdentifier/wos/000318941300022 http://hdl.handle.net/20.500.11850/67919 doi:10.3929/ethz-b-000067919 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 Unported CC-BY Atmospheric Chemistry and Physics, 13 (9) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2013 ftethz https://doi.org/20.500.11850/67919 https://doi.org/10.3929/ethz-b-000067919 https://doi.org/10.5194/acp-13-4815-2013 2023-02-13T00:45:53Z We present here surface water vapor isotopic measurements conducted from June to August 2010 at the NEEM (North Greenland Eemian Drilling Project) camp, NW Greenland (77.45° N, 51.05° W, 2484 m a.s.l.). Measurements were conducted at 9 different heights from 0.1 m to 13.5 m above the snow surface using two different types of cavity-enhanced near-infrared absorption spectroscopy analyzers. For each instrument specific protocols were developed for calibration and drift corrections. The inter-comparison of corrected results from different instruments reveals excellent reproducibility, stability, and precision with a standard deviations of ~ 0.23‰ for δ18O and ~ 1.4‰ for δD. Diurnal and intraseasonal variations show strong relationships between changes in local surface humidity and water vapor isotopic composition, and with local and synoptic weather conditions. This variability probably results from the interplay between local moisture fluxes, linked with firn–air exchanges, boundary layer dynamics, and large-scale moisture advection. Particularly remarkable are several episodes characterized by high (> 40‰) surface water vapor deuterium excess. Air mass back-trajectory calculations from atmospheric analyses and water tagging in the LMDZiso (Laboratory of Meteorology Dynamics Zoom-isotopic) atmospheric model reveal that these events are associated with predominant Arctic air mass origin. The analysis suggests that high deuterium excess levels are a result of strong kinetic fractionation during evaporation at the sea-ice margin. ISSN:1680-7375 ISSN:1680-7367 Article in Journal/Newspaper Arctic Greenland Ice Sheet North Greenland Sea ice ETH Zürich Research Collection Arctic Greenland |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
description |
We present here surface water vapor isotopic measurements conducted from June to August 2010 at the NEEM (North Greenland Eemian Drilling Project) camp, NW Greenland (77.45° N, 51.05° W, 2484 m a.s.l.). Measurements were conducted at 9 different heights from 0.1 m to 13.5 m above the snow surface using two different types of cavity-enhanced near-infrared absorption spectroscopy analyzers. For each instrument specific protocols were developed for calibration and drift corrections. The inter-comparison of corrected results from different instruments reveals excellent reproducibility, stability, and precision with a standard deviations of ~ 0.23‰ for δ18O and ~ 1.4‰ for δD. Diurnal and intraseasonal variations show strong relationships between changes in local surface humidity and water vapor isotopic composition, and with local and synoptic weather conditions. This variability probably results from the interplay between local moisture fluxes, linked with firn–air exchanges, boundary layer dynamics, and large-scale moisture advection. Particularly remarkable are several episodes characterized by high (> 40‰) surface water vapor deuterium excess. Air mass back-trajectory calculations from atmospheric analyses and water tagging in the LMDZiso (Laboratory of Meteorology Dynamics Zoom-isotopic) atmospheric model reveal that these events are associated with predominant Arctic air mass origin. The analysis suggests that high deuterium excess levels are a result of strong kinetic fractionation during evaporation at the sea-ice margin. ISSN:1680-7375 ISSN:1680-7367 |
format |
Article in Journal/Newspaper |
author |
Steen-Larsen, Hans C. Johnsen, S.J. Masson-Delmotte, Valérie Stenni, Barbara Risi, C. Sodemann, Harald Balslev-Clausen, David Blunier, Thomas Dahl-Jensen, Dorthe Ellehøj, Mads D. Falourd, S. Grindsted, Aslak Gkinis, Vasileios Jouzel, J. Popp, Trevor Sheldon, Simon Simonsen, Sebastian B. Sjolte, Jesper Steffensen, Jørgen P. Sperlich, Peter Sveinbjörnsdottír, Árný E. Vinther, Bo M. White, James W.C. |
spellingShingle |
Steen-Larsen, Hans C. Johnsen, S.J. Masson-Delmotte, Valérie Stenni, Barbara Risi, C. Sodemann, Harald Balslev-Clausen, David Blunier, Thomas Dahl-Jensen, Dorthe Ellehøj, Mads D. Falourd, S. Grindsted, Aslak Gkinis, Vasileios Jouzel, J. Popp, Trevor Sheldon, Simon Simonsen, Sebastian B. Sjolte, Jesper Steffensen, Jørgen P. Sperlich, Peter Sveinbjörnsdottír, Árný E. Vinther, Bo M. White, James W.C. Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet |
author_facet |
Steen-Larsen, Hans C. Johnsen, S.J. Masson-Delmotte, Valérie Stenni, Barbara Risi, C. Sodemann, Harald Balslev-Clausen, David Blunier, Thomas Dahl-Jensen, Dorthe Ellehøj, Mads D. Falourd, S. Grindsted, Aslak Gkinis, Vasileios Jouzel, J. Popp, Trevor Sheldon, Simon Simonsen, Sebastian B. Sjolte, Jesper Steffensen, Jørgen P. Sperlich, Peter Sveinbjörnsdottír, Árný E. Vinther, Bo M. White, James W.C. |
author_sort |
Steen-Larsen, Hans C. |
title |
Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet |
title_short |
Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet |
title_full |
Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet |
title_fullStr |
Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet |
title_full_unstemmed |
Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet |
title_sort |
continuous monitoring of summer surface water vapor isotopic composition above the greenland ice sheet |
publisher |
Copernicus |
publishDate |
2013 |
url |
https://hdl.handle.net/20.500.11850/67919 https://doi.org/10.3929/ethz-b-000067919 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Ice Sheet North Greenland Sea ice |
genre_facet |
Arctic Greenland Ice Sheet North Greenland Sea ice |
op_source |
Atmospheric Chemistry and Physics, 13 (9) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-13-4815-2013 info:eu-repo/semantics/altIdentifier/wos/000318941300022 http://hdl.handle.net/20.500.11850/67919 doi:10.3929/ethz-b-000067919 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 Unported |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/20.500.11850/67919 https://doi.org/10.3929/ethz-b-000067919 https://doi.org/10.5194/acp-13-4815-2013 |
_version_ |
1766340016224600064 |