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 degrees N, 51.05 degrees W, 2484 m a.s.l.). Measurements were conducted at 9 different heights from 0.1m to 13.5m above the sno...
Published in: | Atmospheric Chemistry and Physics |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus GmbH
2013
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Online Access: | https://lup.lub.lu.se/record/3931291 https://doi.org/10.5194/acp-13-4815-2013 |
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ftulundlup:oai:lup.lub.lu.se:952d7302-55ae-457a-966f-1c19a794159c 2023-05-15T15:09:46+02:00 Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet Steen-Larsen, H. C. Johnsen, S. J. Masson-Delmotte, V. Stenni, B. Risi, C. Sodemann, H. Balslev-Clausen, D. Blunier, T. Dahl-Jensen, D. Ellehoj, M. D. Falourd, S. Grindsted, A. Gkinis, V. Jouzel, J. Popp, T. Sheldon, S. Simonsen, S. B. Sjolte, Jesper Steffensen, J. P. Sperlich, P. Sveinbjornsdottir, A. E. Vinther, B. M. White, J. W. C. 2013 https://lup.lub.lu.se/record/3931291 https://doi.org/10.5194/acp-13-4815-2013 eng eng Copernicus GmbH https://lup.lub.lu.se/record/3931291 http://dx.doi.org/10.5194/acp-13-4815-2013 wos:000318941300022 scopus:84896692801 Atmospheric Chemistry and Physics; 13(9), pp 4815-4828 (2013) ISSN: 1680-7324 Geology contributiontojournal/article info:eu-repo/semantics/article text 2013 ftulundlup https://doi.org/10.5194/acp-13-4815-2013 2023-02-01T23:29:07Z 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 degrees N, 51.05 degrees W, 2484 m a.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 inter-comparison of corrected results from different instruments reveals excellent reproducibility, stability, and precision with a standard deviations of similar to 0.23 parts per thousand for delta O-18 and similar to 1.4 parts per thousand for delta 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 parts per thousand) 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 Lund University Publications (LUP) Arctic Greenland Atmospheric Chemistry and Physics 13 9 4815 4828 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology |
spellingShingle |
Geology Steen-Larsen, H. C. Johnsen, S. J. Masson-Delmotte, V. Stenni, B. Risi, C. Sodemann, H. Balslev-Clausen, D. Blunier, T. Dahl-Jensen, D. Ellehoj, M. D. Falourd, S. Grindsted, A. Gkinis, V. Jouzel, J. Popp, T. Sheldon, S. Simonsen, S. B. Sjolte, Jesper Steffensen, J. P. Sperlich, P. Sveinbjornsdottir, A. E. Vinther, B. M. White, J. W. C. Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet |
topic_facet |
Geology |
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 degrees N, 51.05 degrees W, 2484 m a.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 inter-comparison of corrected results from different instruments reveals excellent reproducibility, stability, and precision with a standard deviations of similar to 0.23 parts per thousand for delta O-18 and similar to 1.4 parts per thousand for delta 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 parts per thousand) 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. C. Johnsen, S. J. Masson-Delmotte, V. Stenni, B. Risi, C. Sodemann, H. Balslev-Clausen, D. Blunier, T. Dahl-Jensen, D. Ellehoj, M. D. Falourd, S. Grindsted, A. Gkinis, V. Jouzel, J. Popp, T. Sheldon, S. Simonsen, S. B. Sjolte, Jesper Steffensen, J. P. Sperlich, P. Sveinbjornsdottir, A. E. Vinther, B. M. White, J. W. C. |
author_facet |
Steen-Larsen, H. C. Johnsen, S. J. Masson-Delmotte, V. Stenni, B. Risi, C. Sodemann, H. Balslev-Clausen, D. Blunier, T. Dahl-Jensen, D. Ellehoj, M. D. Falourd, S. Grindsted, A. Gkinis, V. Jouzel, J. Popp, T. Sheldon, S. Simonsen, S. B. Sjolte, Jesper Steffensen, J. P. Sperlich, P. Sveinbjornsdottir, A. E. Vinther, B. M. White, J. W. C. |
author_sort |
Steen-Larsen, H. 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 GmbH |
publishDate |
2013 |
url |
https://lup.lub.lu.se/record/3931291 https://doi.org/10.5194/acp-13-4815-2013 |
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), pp 4815-4828 (2013) ISSN: 1680-7324 |
op_relation |
https://lup.lub.lu.se/record/3931291 http://dx.doi.org/10.5194/acp-13-4815-2013 wos:000318941300022 scopus:84896692801 |
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_ |
1766340885067333632 |