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, 51.05W, 2484ma.s.l.). Measurements were conducted at 9 different heights from 0.1m to 13.5m above the snow surface using two...
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ftpubman:oai:pure.mpg.de:item_1752545 2023-08-20T04:04:38+02:00 Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet Steen-Larsen, H. Johnsen, S. Masson-Delmotte, V. Stenni, B. Risi, C. Sodemann, H. Balslev-Clausen, D. Blunier, T. Dahl-Jensen, D. Ellehøj, M. Falourd, S. Grindsted, A. Gkinis, V. Jouzel, J. Popp, T. Sheldon, S. Simonsen, S. Sjolte, J. Steffensen, J. Sperlich, P. Sveinbjörnsdóttir, A. Vinther, B. White, J. 2013-05-13 application/pdf http://hdl.handle.net/11858/00-001M-0000-0013-7804-4 http://hdl.handle.net/11858/00-001M-0000-0013-7A0C-6 http://hdl.handle.net/11858/00-001M-0000-0013-7A0D-4 unknown info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-13-4815-2013 http://hdl.handle.net/11858/00-001M-0000-0013-7804-4 http://hdl.handle.net/11858/00-001M-0000-0013-7A0C-6 http://hdl.handle.net/11858/00-001M-0000-0013-7A0D-4 info:eu-repo/semantics/openAccess Atmospheric Chemistry and Physics info:eu-repo/semantics/article 2013 ftpubman https://doi.org/10.5194/acp-13-4815-2013 2023-08-01T23:36:14Z 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, 51.05W, 2484ma.s.l.). Measurements were conducted at 9 different heights from 0.1m to 13.5m 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 intercomparison of corrected results from different instruments reveals excellent reproducibility, stability, and precision with a standard deviations of 0.23‰ for 18O and 1.4‰ for D. 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 Article in Journal/Newspaper Arctic Greenland Ice Sheet North Greenland Sea ice Max Planck Society: MPG.PuRe Arctic Greenland Atmospheric Chemistry and Physics 13 9 4815 4828 |
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Open Polar |
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Max Planck Society: MPG.PuRe |
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ftpubman |
language |
unknown |
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, 51.05W, 2484ma.s.l.). Measurements were conducted at 9 different heights from 0.1m to 13.5m 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 intercomparison of corrected results from different instruments reveals excellent reproducibility, stability, and precision with a standard deviations of 0.23‰ for 18O and 1.4‰ for D. 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 |
format |
Article in Journal/Newspaper |
author |
Steen-Larsen, H. Johnsen, S. Masson-Delmotte, V. Stenni, B. Risi, C. Sodemann, H. Balslev-Clausen, D. Blunier, T. Dahl-Jensen, D. Ellehøj, M. Falourd, S. Grindsted, A. Gkinis, V. Jouzel, J. Popp, T. Sheldon, S. Simonsen, S. Sjolte, J. Steffensen, J. Sperlich, P. Sveinbjörnsdóttir, A. Vinther, B. White, J. |
spellingShingle |
Steen-Larsen, H. Johnsen, S. Masson-Delmotte, V. Stenni, B. Risi, C. Sodemann, H. Balslev-Clausen, D. Blunier, T. Dahl-Jensen, D. Ellehøj, M. Falourd, S. Grindsted, A. Gkinis, V. Jouzel, J. Popp, T. Sheldon, S. Simonsen, S. Sjolte, J. Steffensen, J. Sperlich, P. Sveinbjörnsdóttir, A. Vinther, B. White, J. Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet |
author_facet |
Steen-Larsen, H. Johnsen, S. Masson-Delmotte, V. Stenni, B. Risi, C. Sodemann, H. Balslev-Clausen, D. Blunier, T. Dahl-Jensen, D. Ellehøj, M. Falourd, S. Grindsted, A. Gkinis, V. Jouzel, J. Popp, T. Sheldon, S. Simonsen, S. Sjolte, J. Steffensen, J. Sperlich, P. Sveinbjörnsdóttir, A. Vinther, B. White, J. |
author_sort |
Steen-Larsen, H. |
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 |
publishDate |
2013 |
url |
http://hdl.handle.net/11858/00-001M-0000-0013-7804-4 http://hdl.handle.net/11858/00-001M-0000-0013-7A0C-6 http://hdl.handle.net/11858/00-001M-0000-0013-7A0D-4 |
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 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-13-4815-2013 http://hdl.handle.net/11858/00-001M-0000-0013-7804-4 http://hdl.handle.net/11858/00-001M-0000-0013-7A0C-6 http://hdl.handle.net/11858/00-001M-0000-0013-7A0D-4 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-13-4815-2013 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
13 |
container_issue |
9 |
container_start_page |
4815 |
op_container_end_page |
4828 |
_version_ |
1774715018881794048 |