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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Language: | English |
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Online Access: | http://hdl.handle.net/10278/42745 https://doi.org/10.5194/acp-13-4815-2013 |
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ftuniveneziairis:oai:iris.unive.it:10278/42745 2024-04-21T08:03:12+00:00 Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet H. C. Steen Larsen S. J. Johnsen V. Masson Delmotte C. Risi H. Sodemann D. Balslev Clausen T. Blunier D. Dahl Jensen M. D. Ellehøj S. Falourd A. Grindsted V. Gkinis J. Jouzel T. Popp S. Sheldon S. B. Simonsen J. Sjolte J. P. Steffensen P. Sperlich A. E. Sveinbjörnsdóttir B. M. Vinther J. W. C. White STENNI, Barbara H. C., Steen Larsen S. J., Johnsen V., Masson Delmotte Stenni, Barbara C., Risi H., Sodemann D., Balslev Clausen T., Blunier D., Dahl Jensen M. D., Ellehøj S., Falourd A., Grindsted V., Gkini J., Jouzel T., Popp S., Sheldon S. B., Simonsen J., Sjolte J. P., Steffensen P., Sperlich A. E., Sveinbjörnsdóttir B. M., Vinther J. W. C., White 2013 http://hdl.handle.net/10278/42745 https://doi.org/10.5194/acp-13-4815-2013 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000318941300022 volume:13 firstpage:4815 lastpage:4828 numberofpages:14 journal:ATMOSPHERIC CHEMISTRY AND PHYSICS http://hdl.handle.net/10278/42745 doi:10.5194/acp-13-4815-2013 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84896692801 info:eu-repo/semantics/openAccess water vapor stable isotope Greenland NEEM deuterium excess info:eu-repo/semantics/article 2013 ftuniveneziairis https://doi.org/10.5194/acp-13-4815-2013 2024-03-28T01:23:12Z 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 Greenland Ice Sheet North Greenland Sea ice Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Atmospheric Chemistry and Physics 13 9 4815 4828 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
water vapor stable isotope Greenland NEEM deuterium excess |
spellingShingle |
water vapor stable isotope Greenland NEEM deuterium excess H. C. Steen Larsen S. J. Johnsen V. Masson Delmotte C. Risi H. Sodemann D. Balslev Clausen T. Blunier D. Dahl Jensen M. D. Ellehøj S. Falourd A. Grindsted V. Gkinis J. Jouzel T. Popp S. Sheldon S. B. Simonsen J. Sjolte J. P. Steffensen P. Sperlich A. E. Sveinbjörnsdóttir B. M. Vinther J. W. C. White STENNI, Barbara Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet |
topic_facet |
water vapor stable isotope Greenland NEEM deuterium excess |
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. |
author2 |
H. C., Steen Larsen S. J., Johnsen V., Masson Delmotte Stenni, Barbara C., Risi H., Sodemann D., Balslev Clausen T., Blunier D., Dahl Jensen M. D., Ellehøj S., Falourd A., Grindsted V., Gkini J., Jouzel T., Popp S., Sheldon S. B., Simonsen J., Sjolte J. P., Steffensen P., Sperlich A. E., Sveinbjörnsdóttir B. M., Vinther J. W. C., White |
format |
Article in Journal/Newspaper |
author |
H. C. Steen Larsen S. J. Johnsen V. Masson Delmotte C. Risi H. Sodemann D. Balslev Clausen T. Blunier D. Dahl Jensen M. D. Ellehøj S. Falourd A. Grindsted V. Gkinis J. Jouzel T. Popp S. Sheldon S. B. Simonsen J. Sjolte J. P. Steffensen P. Sperlich A. E. Sveinbjörnsdóttir B. M. Vinther J. W. C. White STENNI, Barbara |
author_facet |
H. C. Steen Larsen S. J. Johnsen V. Masson Delmotte C. Risi H. Sodemann D. Balslev Clausen T. Blunier D. Dahl Jensen M. D. Ellehøj S. Falourd A. Grindsted V. Gkinis J. Jouzel T. Popp S. Sheldon S. B. Simonsen J. Sjolte J. P. Steffensen P. Sperlich A. E. Sveinbjörnsdóttir B. M. Vinther J. W. C. White STENNI, Barbara |
author_sort |
H. C. Steen Larsen |
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/10278/42745 https://doi.org/10.5194/acp-13-4815-2013 |
genre |
Greenland Ice Sheet North Greenland Sea ice |
genre_facet |
Greenland Ice Sheet North Greenland Sea ice |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000318941300022 volume:13 firstpage:4815 lastpage:4828 numberofpages:14 journal:ATMOSPHERIC CHEMISTRY AND PHYSICS http://hdl.handle.net/10278/42745 doi:10.5194/acp-13-4815-2013 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84896692801 |
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 |
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1796943147093196800 |