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Author |
David, C.; Keckhut, P.; Armetta, A.; Jumelet, J.; Snels, M.; Marchand, M.; Bekki, S. |
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Title |
Radiosonde stratospheric temperatures at Dumont d'Urville (Antarctica): trends and link with polar stratospheric clouds |
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Journal Article |
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Year |
2010 |
Publication |
Atmos. Chem. Phys. |
Abbreviated Journal |
ACP |
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Volume |
10 |
Issue |
8 |
Pages |
3813-3825 |
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Abstract |
Temperature profiles measurements are performed daily (00:00 UT) in Dumont d'Urville (66°40' S, 140°01' E) by Météo-France, using standard radiosondes, since the International Geophysical Year in 1957. Yet, due to a 16 years data gap between 1963 and 1978, the entire dataset is only used for a qualitative overview. Only the most recent series, between 1979 and 2008, is used to investigate the inter-annual stratospheric temperatures variability. Over Dumont d'Urville, at the edge of the vortex, the annual mean temperature cooling of about 1 K/decade at 20 km is the result of the cooling trends between 0.5 and 1.4 K/decade, in summer and autumn and a warming of about 1.1 K/decade in spring. These values are consistent with values obtained using data from inner vortex stations, but with smaller amplitude. No statistically significant trend is detected in winter. We propose here the first attempt to link stratospheric temperature trends to Polar Stratospheric Cloud (PSC) trends in Antarctica based on the only continuous 20 years database of PSC lidar detection. Despite the absence of mean temperature trend during winter, the occurrence of temperatures below the NAT threshold between 1989 and 2008 reveals a significant trend of about +6%/decade. The PSCs occurrences frequency exhibits a concomitant trend of about +3%/decade, although not statistically significant. Yet, this is consistent with results obtained in the Northern Hemisphere. Such a possible positive trend in PSC occurrence has to be further explored to be confirmed or invalidated. If confirmed, this PSC trend is likely to have strong impacts, both on ozone recovery and climate evolution in Antarctica. The study also reveals the importance of trends on extreme temperatures, and not only on mean temperatures. |
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Copernicus Publications |
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1680-7316 |
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yes |
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IPEV @ Thierry.Lemaire @ |
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6061 |
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Author |
Trehen P. & Vernon P. |
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Title |
Adaptive strategies and evolution of life history parameters in Subantarctic flightless flies. |
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Conference - International - Article without Reading Comitee |
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Year |
1992 |
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42 |
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First European Workshop on Invertebrate Ecophysiology |
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136 |
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yes |
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715 |
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Author |
Lefauconnier B., Hagen J.O. & Rudant J.P. |
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Title |
Flow speed and calving rate of Kongsbreen glacier using Spot images. Second Circumpolar symposium on Remote sensing of Arctic Environments. |
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Journal Article |
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Year |
1994 |
Publication |
Polar research |
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13 |
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1 |
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59-65 |
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265 |
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0800-0395 |
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yes |
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719 |
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Author |
Salamolard M. & Weimerskirch H. |
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Title |
Relationship between foraging effort and energy requirement throughout the breeding season in the wandering albatross. |
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Conference - International - Article with Reading Comitee |
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1993 |
Publication |
Functional ecology |
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7 |
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643-652 |
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109 |
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0269-8463 |
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yes |
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720 |
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Author |
Lachuer J, Legras C, Ronfort C, Barges S, Cohen-Adad F, Quivet L, Duchamp C, Verdier G, Barré H. |
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Title |
Molecular cloning and sequencing of a cDNA encoding a beta-thyroid hormone receptor in muscovy duckling. |
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Journal Article |
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Year |
1996 |
Publication |
Biochimica et biophysica acta |
Abbreviated Journal |
Biochim. Biophys. Acta |
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Volume |
1310 |
Issue |
1 |
Pages |
127-130 |
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Abstract |
A cDNA clone encoding a beta-thyroid hormone receptor (TRbeta) from muscovy
duckling liver was isolated and sequenced. Comparison with the chicken TRbeta
sequence showed a high degree of homology. This cDNA was used as a probe to
characterize the TRbeta mRNA transcripts expressed in muscovy duckling liver. |
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131 |
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0006-3002 |
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yes |
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722 |
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Author |
Boutron C.F. |
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Title |
Antarctic and Greenland Snow and Ice Cores: Archives of the cliamte and Pollution of the Atmposphere of the Earth. |
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Journal Article |
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Year |
1999 |
Publication |
Korean journal of polar research |
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Volume |
10 |
Issue |
2 |
Pages |
45-52 |
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159 |
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yes |
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727 |
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Author |
Lorius C. & Jouzel J. |
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Title |
European project for ice coring in Antarctica (Epica). |
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Book Chapter |
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1996 |
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263-277 |
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Abstract |
The Ocean and The Poles: Grand Challenges for European Cooperation, Edited by Gotthilf Hempel, Gustav Fisher Verlag, 1996 |
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960 |
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yes |
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728 |
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Author |
Van De Vijver B. |
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Title |
A protistological approach of the ecology and paleo-ecology of the subantarctic and maritime antarctic region. |
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Thesis |
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1999 |
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Abstract |
THESE, Université d'Anvers, Belgique, Thèse de Doctorat |
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136 |
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yes |
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729 |
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Author |
Baker, D.F.; Law, R.M.; Gurney, K.R.; Rayner, P.; Peylin, P.; Denning, A.S.; Bousquet, P.; Bruhwiler, L.; Chen, Y.-H.; Ciais, P.; Fung, I.Y.; Heimann, M.; John, J.; Maki, T.; Maksyutov, S.; Masarie, K.; Prather, M.; Pak, B.; Taguchi, S.; Zhu, Z. |
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Title |
TransCom 3 inversion intercomparison: Impact of transport model errors on the interannual variability of regional CO2 fluxes, 1988–2003 |
Type |
Journal Article |
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Year |
2006 |
Publication |
Global biogeochemical cycles |
Abbreviated Journal |
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Volume |
20 |
Issue |
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Pages |
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Keywords |
atmospheric inversions; CO 2 fluxes; interannual variability; 0368 Atmospheric Composition and Structure: Troposphere: constituent transport and chemistry; 0322 Atmospheric Composition and Structure: Constituent sources and sinks; 0428 Biogeosciences: Carbon cycling; 0414 Biogeosciences: Biogeochemical cycles, processes, and modeling; 3260 Mathematical Geophysics: Inverse theory |
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Abstract |
Monthly CO2 fluxes are estimated across 1988–2003 for 22 emission regions using data from 78 CO2 measurement sites. The same inversion (method, priors, data) is performed with 13 different atmospheric transport models, and the spread in the results is taken as a measure of transport model error. Interannual variability (IAV) in the winds is not modeled, so any IAV in the measurements is attributed to IAV in the fluxes. When both this transport error and the random estimation errors are considered, the flux IAV obtained is statistically significant at P ? 0.05 when the fluxes are grouped into land and ocean components for three broad latitude bands, but is much less so when grouped into continents and basins. The transport errors have the largest impact in the extratropical northern latitudes. A third of the 22 emission regions have significant IAV, including the Tropical East Pacific (with physically plausible uptake/release across the 1997–2000 El Niño/La Niña) and Tropical Asia (with strong release in 1997/1998 coinciding with large-scale fires there). Most of the global IAV is attributed robustly to the tropical/southern land biosphere, including both the large release during the 1997/1998 El Niño and the post-Pinatubo uptake. |
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439 |
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American Geophysical Union |
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0886-6236 |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5542 |
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Author |
Fluteau F. |
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Title |
Climate modeling with a 'zoom' on the polar ice sheet . The 'zoom'. |
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Journal Article |
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Year |
2000 |
Publication |
French IGBP-WCRP News letter |
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Fevrier |
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70-75 |
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355 |
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731 |
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