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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ftdoajarticles:oai:doaj.org/article:b48c9513bc0f4abdbdadd1bbd69ddf4d 2023-05-15T15:08:45+02:00 Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet H. C. Steen-Larsen S. J. Johnsen V. Masson-Delmotte B. Stenni 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 2013-05-01T00:00:00Z https://doi.org/10.5194/acp-13-4815-2013 https://doaj.org/article/b48c9513bc0f4abdbdadd1bbd69ddf4d EN eng Copernicus Publications http://www.atmos-chem-phys.net/13/4815/2013/acp-13-4815-2013.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-13-4815-2013 1680-7316 1680-7324 https://doaj.org/article/b48c9513bc0f4abdbdadd1bbd69ddf4d Atmospheric Chemistry and Physics, Vol 13, Iss 9, Pp 4815-4828 (2013) Physics QC1-999 Chemistry QD1-999 article 2013 ftdoajarticles https://doi.org/10.5194/acp-13-4815-2013 2022-12-31T07:25:18Z 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 δ 18 O 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. Article in Journal/Newspaper Arctic Greenland Ice Sheet North Greenland Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Greenland Atmospheric Chemistry and Physics 13 9 4815 4828 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 H. C. Steen-Larsen S. J. Johnsen V. Masson-Delmotte B. Stenni 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 Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
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 δ 18 O 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. |
format |
Article in Journal/Newspaper |
author |
H. C. Steen-Larsen S. J. Johnsen V. Masson-Delmotte B. Stenni 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 |
author_facet |
H. C. Steen-Larsen S. J. Johnsen V. Masson-Delmotte B. Stenni 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 |
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 |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/acp-13-4815-2013 https://doaj.org/article/b48c9513bc0f4abdbdadd1bbd69ddf4d |
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, Vol 13, Iss 9, Pp 4815-4828 (2013) |
op_relation |
http://www.atmos-chem-phys.net/13/4815/2013/acp-13-4815-2013.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-13-4815-2013 1680-7316 1680-7324 https://doaj.org/article/b48c9513bc0f4abdbdadd1bbd69ddf4d |
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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1766340057412665344 |