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Author |
Cosme, E.; Genthon, C.; Martinerie, P.; Boucher, O.; Pham, M. |
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Title |
The sulfur cycle at high-southern latitudes in the LMD-ZT General Circulation Model |
Type |
Journal Article |
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Year |
2002 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
107 |
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Keywords |
0305 Atmospheric Composition and Structure: Aerosols and particles; 0312 Atmospheric Composition and Structure: Air/sea constituent fluxes; 0368 Atmospheric Composition and Structure: Troposphere—constituent transport and chemistry; 3319 Meteorology and Atmospheric Dynamics: General circulation; 9310 Information Related to Geographic Region: Antarctica |
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Abstract |
This modeling study was motivated by the recent publication of year-round records of dimethylsulfide (DMS) and dimethylsulfoxide (DMSO) in Antarctica, completing the available series of sulfate and methanesulfonic acid (MSA). Sulfur chemistry has been incorporated in the Laboratoire de Météorologie Dynamique-Zoom Tracers (LMD-ZT) Atmospheric General Circulation Model (AGCM), with high-resolution and improved physics at high-southern latitudes. The model predicts the concentration of six major sulfur species through emissions, transport, wet and dry deposition, and chemistry in both gas and aqueous phases. Model results are broadly realistic when compared with measurements in air and snow or ice, as well as to results of other modeling studies, at high- and middle-southern latitudes. Atmospheric MSA concentrations are underestimated and DMSO concentrations are overestimated in summer, reflecting the lack of a DMSO heterogeneous sink leading to MSA. Experiments with various recently published estimates of the rate of this sink are reported. Although not corrected in this work, other defects are identified and discussed: DMS concentrations are underestimated in winter, MSA and non-sea-salt (nss) sulfate concentrations may be underestimated at the South Pole, the deposition scheme used in the model may not be adapted to polar regions, and the model does not adequately reproduces interannual variability. Oceanic DMS sources have a major contribution to the variability of sulfur in these regions. The model results suggest that in a large part of central Antarctica ground-level atmospheric DMS concentrations are larger in winter than in summer. At high-southern latitudes, high loads of DMS and DMSO are found and the main chemical sink of sulfur dioxide (SO2) is aqueous oxidation by ozone (O3), whereas oxidation by hydrogen peroxide (H2O2) dominates at the global scale. A comprehensive modeled sulfur budget of Antarctica is provided. |
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414;903 |
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American Geophysical Union |
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0148-0227 |
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yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5543 |
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Author |
Kleimenova N.G., Kozyreva O.V., Zaitsev A.N., Odintsov V.I., Bitterly J. & Schott J.J. |
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Title |
Global structure of Pc5 pulsations during great magnetic storm on March 24, 1989. |
Type |
Journal Article |
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Year |
1997 |
Publication |
Geomagnetism and aeronomy |
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Volume |
37 |
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139 |
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0016-7932 |
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yes |
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872 |
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Author |
Buguet A. |
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Title |
Exploration du sommeil en condtions extrêmes. |
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Journal Article |
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Year |
1997 |
Publication |
Exploration du sommeil et de la vigilance chez l'adulte |
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353-374 |
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252 |
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yes |
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878 |
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Author |
Georges J.Y., Sevot X. & Guinet C. |
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Title |
Fostering in a Subantarctic fur seal. |
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Journal Article |
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Year |
1999 |
Publication |
Mammalia |
Abbreviated Journal |
Mammalia |
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Volume |
63 |
Issue |
3 |
Pages |
384-388 |
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109 |
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0025-1461 |
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yes |
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880 |
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Author |
Mooi R. & David B. |
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Title |
Novel skeletal topologies are related to birth in Antarctic sea urchins. |
Type |
Book Chapter |
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Year |
1993 |
Publication |
Comptes rendus de l'académie des sciences, Paris, série 3 |
Abbreviated Journal |
C. R. Acad. Sci. III, Sci. Vie |
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Volume |
316 |
Issue |
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Pages |
341-345 |
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195 |
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Bachelor's thesis |
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0764-4469 |
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yes |
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Serial |
881 |
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Author |
Peddie N.W. |
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Title |
Evaluation of models proposed for the 1991 revision of the International Geomagnetic Reference Field. |
Type |
Journal Article |
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Year |
1992 |
Publication |
Journal of geomagnetism and geoelectricity |
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Volume |
44 |
Issue |
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Pages |
793-803 |
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139 |
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Bachelor's thesis |
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0022-1392 |
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yes |
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882 |
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Author |
Vernon P., Caron F. & Davies L. |
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Title |
Annual activity of two endemic beetles (Carabidae) at the edge between fell-field and moorland on a sub-Antarctic island. |
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Journal Article |
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Year |
1999 |
Publication |
European journal of soil biology |
Abbreviated Journal |
Eur. J. Soil Biol. |
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Volume |
35 |
Issue |
1 |
Pages |
39-43 |
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136 |
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1164-5563 |
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887 |
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Author |
Isaksson, E.; van de Wal, R.; Thomassen, M.; Pohjola, V.; Moore, J.; Jauhiainen, T.; Vaikmäe, R.; Ivask, J.; Martma, T.; Pinglot, J.-F.; Meijer, H.; Mulvaney, R. |
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Title |
An ice core from Svalbard with seasonal signals preserved. |
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Journal Article |
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1998 |
Publication |
Eos, transactions, american geophysical union |
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45 |
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278 |
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265 |
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Bachelor's thesis |
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2324-9250 |
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yes |
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888 |
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Author |
Menvielle M. & Mazaudier C. |
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Title |
On the transcient variations of the Earth's magnetic field: Mayaud contribution. |
Type |
Journal Article |
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Year |
1992 |
Publication |
Exploring the Earth: progress in geophysics since the 19th century |
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16 |
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46-75 |
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139 |
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889 |
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Author |
Bousses P. & Réale D. |
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Title |
Facteurs proximaux affectant la taille des groupes sociaux d'une population insulaire de mouflons de Corse (Ovis ammon musimon). |
Type |
Conference - National - Article without Reading Comitee |
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Year |
1993 |
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Pages |
205-211 |
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Abstract |
Colloque SFECA. 7-9 mars 1993, Rennes |
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276 |
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Call Number |
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892 |
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