The GRIP deuterium-excess record
Ice cores from Greenland and Antarctica are ideal archives for retrieving long time series of deuterium-excess (d = delta D-8 * delta O-18), a parameter influenced by conditions prevailing in the oceanic regions which provide moisture for polar snow. The central Greenland GRIP deuterium-excess recor...
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ftird:oai:ird.fr:fdi:010037829 2024-09-15T17:46:08+00:00 The GRIP deuterium-excess record Jouzel, J. Stievenard, M. Johnsen, S. J. Landais, A. Masson Delmotte, V. Sveinbjornsdottir, A. /Vimeux, Françoise von Grafenstein, U. White, J. W. C. 2007 https://www.documentation.ird.fr/hor/fdi:010037829 EN eng https://www.documentation.ird.fr/hor/fdi:010037829 oai:ird.fr:fdi:010037829 Jouzel J., Stievenard M., Johnsen S. J., Landais A., Masson Delmotte V., Sveinbjornsdottir A., Vimeux Françoise, von Grafenstein U., White J. W. C. The GRIP deuterium-excess record. 2007, 26 (1-2), p. 1-17 text 2007 ftird 2024-08-15T05:57:42Z Ice cores from Greenland and Antarctica are ideal archives for retrieving long time series of deuterium-excess (d = delta D-8 * delta O-18), a parameter influenced by conditions prevailing in the oceanic regions which provide moisture for polar snow. The central Greenland GRIP deuterium-excess record has recently been interpreted in terms of oceanic source temperatures both for the Holocene and for the last glacial period, this approach being less straightforward for the latter period because of changes in the precipitation seasonality between glacial and interglacial periods. This article examines why a conventional, or sea surface temperature, interpretation of the GRIP excess record seems inconsistent with inferred site and source temperature changes. In addition, the GRIP excess record is extended back into the penultimate glacial period and we assess its geographic significance through a comparison with existing Dye 3 and North GRIP data. We examine why low delta D/delta O-18 slopes observed during glacial times are associated with low deuterium-excess values. Similarities between the Greenland GRIP and Antarctic Vostok excess records are discussed in terms of potential links with insolation and insolation gradient changes. Finally, the isotope records in specific DO events are examined in light of intruiging differences between the isotope ratios (delta D or delta O-18) and the excess records that may result from a feedback mechanism linked with freshwater oceanic input. Text Antarc* Antarctic Antarctica Dye 3 Dye-3 Greenland GRIP IRD (Institute de recherche pour le développement): Horizon |
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description |
Ice cores from Greenland and Antarctica are ideal archives for retrieving long time series of deuterium-excess (d = delta D-8 * delta O-18), a parameter influenced by conditions prevailing in the oceanic regions which provide moisture for polar snow. The central Greenland GRIP deuterium-excess record has recently been interpreted in terms of oceanic source temperatures both for the Holocene and for the last glacial period, this approach being less straightforward for the latter period because of changes in the precipitation seasonality between glacial and interglacial periods. This article examines why a conventional, or sea surface temperature, interpretation of the GRIP excess record seems inconsistent with inferred site and source temperature changes. In addition, the GRIP excess record is extended back into the penultimate glacial period and we assess its geographic significance through a comparison with existing Dye 3 and North GRIP data. We examine why low delta D/delta O-18 slopes observed during glacial times are associated with low deuterium-excess values. Similarities between the Greenland GRIP and Antarctic Vostok excess records are discussed in terms of potential links with insolation and insolation gradient changes. Finally, the isotope records in specific DO events are examined in light of intruiging differences between the isotope ratios (delta D or delta O-18) and the excess records that may result from a feedback mechanism linked with freshwater oceanic input. |
format |
Text |
author |
Jouzel, J. Stievenard, M. Johnsen, S. J. Landais, A. Masson Delmotte, V. Sveinbjornsdottir, A. /Vimeux, Françoise von Grafenstein, U. White, J. W. C. |
spellingShingle |
Jouzel, J. Stievenard, M. Johnsen, S. J. Landais, A. Masson Delmotte, V. Sveinbjornsdottir, A. /Vimeux, Françoise von Grafenstein, U. White, J. W. C. The GRIP deuterium-excess record |
author_facet |
Jouzel, J. Stievenard, M. Johnsen, S. J. Landais, A. Masson Delmotte, V. Sveinbjornsdottir, A. /Vimeux, Françoise von Grafenstein, U. White, J. W. C. |
author_sort |
Jouzel, J. |
title |
The GRIP deuterium-excess record |
title_short |
The GRIP deuterium-excess record |
title_full |
The GRIP deuterium-excess record |
title_fullStr |
The GRIP deuterium-excess record |
title_full_unstemmed |
The GRIP deuterium-excess record |
title_sort |
grip deuterium-excess record |
publishDate |
2007 |
url |
https://www.documentation.ird.fr/hor/fdi:010037829 |
genre |
Antarc* Antarctic Antarctica Dye 3 Dye-3 Greenland GRIP |
genre_facet |
Antarc* Antarctic Antarctica Dye 3 Dye-3 Greenland GRIP |
op_relation |
https://www.documentation.ird.fr/hor/fdi:010037829 oai:ird.fr:fdi:010037829 Jouzel J., Stievenard M., Johnsen S. J., Landais A., Masson Delmotte V., Sveinbjornsdottir A., Vimeux Françoise, von Grafenstein U., White J. W. C. The GRIP deuterium-excess record. 2007, 26 (1-2), p. 1-17 |
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1810494120461860864 |