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Author Philippe Ricaud, Paolo Grigioni, Romain Roehrig, Pierre Durand, Dana E. Veron openurl 
  Title Trends in Atmospheric Humidity and Temperature above Dome C Type (up) Communication
  Year 2020 Publication Antarctica Evaluated from Observations and Reanalyses, SCAR, Visio, Hobart, Australia, August 2020. Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Programme 910  
  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 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7840  
Permanent link to this record
 
 
Author Barbero A. Grilli R., Blouzon C., Caillon N., Savarino, J. openurl 
  Title New Observations to Better Constrain NOx (NO + NO2) Concentrations on the Antarctic Plateau and to Resolve the Ambiguity in the NO2:NO Ratio Type (up) Communication
  Year 2020 Publication AGU Fall Meeting 2020, 1-17 December 2020 San Francisco, USA Abbreviated Journal  
  Volume Issue Pages  
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  Abstract High southern latitude regions present specificities that are highly relevant for studying the climate in connection with the atmospheric chemistry. Contrary to regions of the rest of the world, Antarctica is still considered as a pristine environment not yet influenced by predominant anthropogenic emissions (with the notable exceptions of GHG) and thus represents the last continental-size natural laboratory. Polar snow-air-radiation interactions and the specific oxidant character of the polar atmosphere are key in order to decipher the right information buried in the ice and the current chemical stability of the polar atmosphere. Previous Antarctic campaigns have shown atmospheric similarities between the Antarctic Plateau (at Dome C, Concordia) and other regions. However, several differences are yet to be explained: the large NO2:NO ratios previously found in ambient air indicates the existence of an unknown source of NO2 above the Antarctic Plateau. These observations question either the reliability of previous measurements or the lack of our understanding of the NOx chemistry. Novel optical instruments based on the incoherent broadband cavity enhanced absorption spectroscopy technique (IBBCEAS) were developed. The instruments can measure simultaneously NO2, NOx and NO with detection limits of 11, 10 and 21 ppt, respectively (1σ) within 22 minutes of measurements. The two compact and transportable instruments were deployed during the 2019/20 Dome C summer campaign. Atmospheric measurements together with flux chamber experiments were performed for determining the snowpack NOx emissions and the NO2:NO ratio. The observations seem to differ from the conclusions of the previous Antarctic campaigns. Assuming steady state and maximum radiations, the theoretical NO2:NO ratio from the period observed in December was calculated to be 0.38 ± 0.15 and 0.31 ± 0.12 in January. The instruments measured a ratio close to steady state in December (0.25 ± 0.25) while the ratio observed in January (1.248 ± 0.792) indicates the presence of a strong NO oxidant or an unknown source of NO2. Flux chamber experiments on different types of snow were done during this campaign, and the results will help deepen our knowledge of Antarctic atmospheric chemistry.  
  Programme 1177  
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  Corporate Author Thesis  
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  Language Summary Language Original Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7864  
Permanent link to this record
 
 
Author Ishino S., Hattori S., Savarino J., Legrand M., Albalat E., Albarède F., Preunkert S., Jourdain B., Yoshida N. openurl 
  Title Homogeneous sulfur isotope signature in East Antarctica and implication for sulfur source shifts through the last glacial-interglacial cycle Type (up) Communication
  Year 2020 Publication The Geochemical Society of Japan Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Programme 1177  
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  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 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7865  
Permanent link to this record
 
 
Author Casado M., Leroy-Dos C., Fourre E., Favier V., Agosta C., Arnaud L., Prié F., Akers P., Janssen L., Savarino J., Landais A. openurl 
  Title Water vapor isotopic signature along the EAIIST traverse Type (up) Communication
  Year 2020 Publication EGU General Assembly, 19-30 April 2021 Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Programme 1177  
  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 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7868  
Permanent link to this record
 
 
Author Baltzer, A.; Robert, L.; Roussel, O. openurl 
  Title Des images pour témoigner du réchauffement climatique au Spitsberg Type (up) Communication
  Year 2020 Publication 16émes journées scientifiques du cnfra, 22-23 septembre 2020, la rochelle, france Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Programme 1223  
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  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 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 8049  
Permanent link to this record
 
 
Author Guillot T. file  openurl
  Title Discovering Exoplanets from Antarctica with ASTEP Type (up) Conference - International - Communication
  Year 2020 Publication On the way to Antarctica seminar, 29 october 2020 Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Programme 1066  
  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 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7829  
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Author Crouzet N., et al. file  openurl
  Title Towards ASTEP+, a two-color photometric telescope at Dome C, Antarctica Type (up) Conference - International - Communication
  Year 2020 Publication SPIE Astronomical Telescopes + Instrumentation (AS20), online, 14-18 December 2020 Abbreviated Journal  
  Volume Paper 11447-23 Issue Pages  
  Keywords  
  Abstract  
  Programme 1066  
  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 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7831  
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Author Lebouvier Marc file  openurl
  Title Retour d'expérience sur l'éradication des ongulés introduits dans les îles subantarctiques Type (up) Conference - National - Communication
  Year 2020 Publication Atelier UICN France sur les espèces exotiques envahissantes en outre-mer, Fort de France, 10-13/02/2020 Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Programme 136  
  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 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7770  
Permanent link to this record
 
 
Author Matthis Auger, Rosemary Morrow, Elodie Kestenare, Jean-Baptiste Sallée, Rebecca Cowley doi  isbn
openurl 
  Title Southern Ocean in-situ temperature trends over 25 years emerge from interannual variability Type (up) Journal
  Year 2020 Publication Nature Communications Abbreviated Journal  
  Volume 12 Issue 1 Pages 514  
  Keywords  
  Abstract Despite playing a major role in global ocean heat storage, the Southern Ocean remains the most sparsely measured region of the global ocean. Here, a unique 25-year temperature time-series of the upper 800 m, repeated several times a year across the Southern Ocean, allows us to document the long-term change within water-masses and how it compares to the interannual variability. Three regions stand out as having strong trends that dominate over interannual variability: warming of the subantarctic waters (0.29 ± 0.09 °C per decade); cooling of the near-surface subpolar waters (−0.07 ± 0.04 °C per decade); and warming of the subsurface subpolar deep waters (0.04 ± 0.01 °C per decade). Although this subsurface warming of subpolar deep waters is small, it is the most robust long-term trend of our section, being in a region with weak interannual variability. This robust warming is associated with a large shoaling of the maximum temperature core in the subpolar deep water (39 ± 09 m per decade), which has been significantly underestimated by a factor of 3 to 10 in past studies. We find temperature changes of comparable magnitude to those reported in Amundsen–Bellingshausen Seas, which calls for a reconsideration of current ocean changes with important consequences for our understanding of future Antarctic ice-sheet mass loss.  
  Programme 694  
  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 2041-1723 ISBN 2041-1723 Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7837  
Permanent link to this record
 
 
Author Sonja Siljak-Yakovlev, Françoise Lamy, Najat Takvorian, Nicolas Valentin, Valérie Gouesbet, Françoise Hennion, Thierry Robert doi  openurl
  Title Genome size and chromosome number of ten plant species from Kerguelen Islands Type (up) Journal
  Year 2020 Publication Polar Biology Abbreviated Journal  
  Volume 43 Issue 12 Pages 1985-1999  
  Keywords  
  Abstract Kerguelen Islands harbor a unique, probably very ancient flora with a high rate of endemism. However, the evolutionary history and characteristics of this flora still require investigation. This concerns in particular genome size and ploidy level variation, despite the evolutionary and ecological significance of those traits. Here we report the first assessment of genome size, using flow cytometry, for eight plant species of which two are endemics of Kerguelen Islands and four of the South Indian Ocean Province. The 2C DNA value ranged from 1.08 pg for Pringlea antiscorbutica to 11.88 pg for Ranunculus biternatus. The chromosome numbers of Colobanthus kerguelensis (2n = 80), Lyallia kerguelensis (2n = 96) and Poa kerguelensis (2n = 28) were also reported in this study for the first time. Overall, our data allowed to infer that all Kerguelen studied species are polyploid (from tetra- to octopolyploid). Intra-genus comparisons showed significant differences of 2C DNA values among Poa and among Ranunculus species, despite their identical ploidy level. In addition, our data highlight the existence of an intraspecific variability of genome size for the two octoploid species Colobanthus kerguelensis and Lyallia kerguelensis. Finally, our data also support the hypothesis regarding which polyploidy may have played a major role in the adaptation of flowering plants to high latitudes, as it has been suggested for arctic species.  
  Programme 1116  
  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 1432-2056 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 6212  
Permanent link to this record
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