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Author
Title Archival of the water stable isotope signal in East Antarctic ice cores Type Journal
Year 2016 Publication The cryosphere discuss. Abbreviated Journal
Volume 2016 Issue Pages 1-33
Keywords
Abstract The oldest ice core records are obtained from the East Antarctic plateau. Water stable isotopes records are key for reconstructions of past climatic conditions both over the ice sheet and at the evaporation source. The accuracy of such climate reconstructions crucially depends on the knowledge of all the processes affecting the water vapour, precipitation and snow isotopic composition. Atmospheric fractionation processes are well understood and can be integrated in Rayleigh distillation and complex isotope enabled climate models. However, a comprehensive quantitative understanding of processes potentially altering the snow isotopic composition after the deposition is still missing, especially for exchanges between vapour and snow. In low accumulation sites such as found on the East Antarctic Plateau, these poorly constrained processes are especially likely to play a significant role. This limits the interpretation of isotopic composition from ice core records, specifically at short time scales. Here, we combine observations of isotopic composition in the vapour, the precipitation, the surface snow and the buried snow from various sites of the East Antarctic Plateau. At the seasonal scale, we highlight a significant impact of metamorphism on surface snow isotopic signal compared to the initial precipitation isotopic signal. In particular, in summer, exchanges of water molecules between vapour and snow are driven by the sublimation/condensation cycles at the diurnal scale. Using highly resolved isotopic composition profiles from pits in five East Antarctic sites, we identify a common 20?cm cycle which cannot be attributed to the seasonal variability of precipitation. Altogether, the smaller range of isotopic compositions observed in the buried and in the surface snow compared to the precipitation, and also the reduced slope between surface snow isotopic composition and temperature compared to precipitation, constitute evidences of post-deposition processes affecting the variability of the isotopic composition in the snow pack. To reproduce these processes in snow-models is crucial to understand the link between snow isotopic composition and climatic conditions and to improve the interpretation of isotopic composition as a paleoclimate proxy.
Programme 1013
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1994-0440 ISBN (down) 1994-0440 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 6569
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Author J. C. Stroeve, S. Jenouvrier, G. G. Campbell, C. Barbraud, K. Delord
Title Mapping and assessing variability in the Antarctic marginal ice zone, pack ice and coastal polynyas in two sea ice algorithms with implications on breeding success of snow petrels Type Journal
Year 2016 Publication The Cryosphere Abbreviated Journal
Volume 10 Issue 4 Pages 1823-1843
Keywords
Abstract Sea ice variability within the marginal ice zone (MIZ) and polynyas plays an important role for phytoplankton productivity and krill abundance. Therefore, mapping their spatial extent as well as seasonal and interannual variability is essential for understanding how current and future changes in these biologically active regions may impact the Antarctic marine ecosystem. Knowledge of the distribution of MIZ, consolidated pack ice and coastal polynyas in the total Antarctic sea ice cover may also help to shed light on the factors contributing towards recent expansion of the Antarctic ice cover in some regions and contraction in others. The long-term passive microwave satellite data record provides the longest and most consistent record for assessing the proportion of the sea ice cover that is covered by each of these ice categories. However, estimates of the amount of MIZ, consolidated pack ice and polynyas depend strongly on which sea ice algorithm is used. This study uses two popular passive microwave sea ice algorithms, the NASA Team and Bootstrap, and applies the same thresholds to the sea ice concentrations to evaluate the distribution and variability in the MIZ, the consolidated pack ice and coastal polynyas. Results reveal that the seasonal cycle in the MIZ and pack ice is generally similar between both algorithms, yet the NASA Team algorithm has on average twice the MIZ and half the consolidated pack ice area as the Bootstrap algorithm. Trends also differ, with the Bootstrap algorithm suggesting statistically significant trends towards increased pack ice area and no statistically significant trends in the MIZ. The NASA Team algorithm on the other hand indicates statistically significant positive trends in the MIZ during spring. Potential coastal polynya area and amount of broken ice within the consolidated ice pack are also larger in the NASA Team algorithm. The timing of maximum polynya area may differ by as much as 5 months between algorithms. These differences lead to different relationships between sea ice characteristics and biological processes, as illustrated here with the breeding success of an Antarctic seabird.
Programme 109
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1994-0424 ISBN (down) 1994-0424 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 6627
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Author
Title Type Book Chapter
Year 2017 Publication The Cryosphere Abbreviated Journal
Volume 11 Issue 1 Pages 343-362
Keywords
Abstract
Programme 411,414,1154
Campaign
Address
Corporate Author Thesis Bachelor's thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1994-0424 ISBN (down) 1994-0424 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 6672
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Author J. Grazioli, C. Genthon, B. Boudevillain, C. Duran-Alarcon, M. Del Guasta, J.-B. Madeleine, A. Berne
Title Type Journal
Year 2017 Publication The Cryosphere Abbreviated Journal
Volume 11 Issue 4 Pages 1797-1811
Keywords
Abstract
Programme 1143
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1994-0424 ISBN (down) 1994-0424 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 6673
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Author
Title Type Journal
Year 2014 Publication The Cryosphere Abbreviated Journal
Volume 8 Issue 6 Pages 2275-2291
Keywords
Abstract
Programme 1053
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1994-0424 ISBN (down) 1994-0424 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 6792
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Author F. Domine, M. Barrere, D. Sarrazin
Title Seasonal evolution of the effective thermal conductivity of the snow and the soil in high Arctic herb tundra at Bylot Island, Canada Type Journal
Year 2016 Publication The Cryosphere Abbreviated Journal
Volume 10 Issue 6 Pages 2573-2588
Keywords
Abstract
Programme 1042
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1994-0424 ISBN (down) 1994-0424 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 6907
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Author
Title Evaluation of CloudSat snowfall rate profiles by a comparison with in situ micro-rain radar observations in East Antarctica Type Journal
Year 2019 Publication The Cryosphere Abbreviated Journal
Volume 13 Issue 3 Pages 943-954
Keywords
Abstract
Programme 1013
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1994-0416 ISBN (down) 1994-0416 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 6905
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Author
Title Type Journal
Year 2018 Publication The Cryosphere Abbreviated Journal
Volume 12 Issue 4 Pages 1479-1498
Keywords
Abstract
Programme 1013
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1994-0416 ISBN (down) 1994-0416 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7198
Permanent link to this record
 

 
Author
Title Type Journal
Year 2014 Publication The Cryosphere Abbreviated Journal
Volume 8 Issue 6 Pages 2275-2291
Keywords
Abstract
Programme 1053
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1994-0416 ISBN (down) 1994-0416 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7262
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Author E. Le Meur, M. Sacchettini, S. Garambois, E. Berthier, A. S. Drouet, G. Durand, D. Young, J. S. Greenbaum, J. W. Holt, D. D. Blankenship, E. Rignot, J. Mouginot, Y. Gim, D. Kirchner, B. de Fleurian, O. Gagliardini, F. Gillet-Chaulet
Title Type Journal
Year 2014 Publication The Cryosphere Abbreviated Journal
Volume 8 Issue 4 Pages 1331-1346
Keywords
Abstract
Programme 1053
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1994-0416 ISBN (down) 1994-0416 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7263
Permanent link to this record