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Author | Gallet J-C, Domine F, Arnaud L, Picard G, Savarino J, | ||||
Title | Vertical profile of the specific surface area and density of the snow at Dome C and on a transect to Dumont D'Urville, Antarctica – albedo calculations and comparison to remote sensing products | Type | Book Chapter | ||
Year | 2011 | Publication | The Cryosphere | Abbreviated Journal | |
Volume | 5 | Issue | 3 | Pages | 631 -649 |
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Abstract | The specific surface area (SSA) of snow determines in part the albedo of snow surfaces and the capacity of the snow to adsorb chemical species and catalyze reactions. Despite these crucial roles, almost no value of snow SSA are available for the largest permanent snow expanse on Earth, the Antarctic. We report the first extensive study of vertical profiles of snow SSA near Dome C (DC: 75°06' S, 123°20' E, 3233 m a.s.l.) on the Antarctic plateau, and at seven sites during the logistical traverse between Dome C and the French coastal base Dumont D'Urville (DDU: 66°40' S, 140°01' E) during the Austral summer 2008–2009. We used the DUFISSS system, which measures the IR reflectance of snow at 1310 nm with an integrating sphere. At DC, the mean SSA of the snow in the top 1 cm is 38 m2 kg−1, decreasing monotonically to 14 m2 kg−1 at a depth of 50 cm. Along the traverse, the snow SSA profile is similar to that at DC in the first 600 km from DC. Closer to DDU, the SSA of the top 5 cm is 23 m2 kg−1, decreasing to 19 m2 kg−1 at 50 cm depth. This difference is attributed to wind, which causes a rapid decrease of surface snow SSA, but forms hard windpacks whose SSA decrease more slowly with time. Since light-absorbing impurities are not concentrated enough to affect albedo, the vertical profiles of SSA and density were used to calculate the spectral albedo of the snow for several realistic illumination conditions, using the DISORT radiative transfer model. A preliminary comparison with MODIS data is presented and our calculations and MODIS data show similar trends. | ||||
Programme | 1011 | ||||
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Publisher | Copernicus Publications | Place of Publication | Editor | ||
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ISSN | 1994-0424 | ISBN | Medium | ||
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Notes | Approved | yes | |||
Call Number | Serial | 663 | |||
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Author | Morin, S. Preunkert and B. Jourdain | ||||
Title | Aerosols (Sea Salt and Biogenic Sulfur) and Ozone in the Boundary Layer at the Coastal (Dumont d’Urville, DDU) and Inland (Concordia) Sites in East Antarctica | Type | Conference - International - Communication | ||
Year | 2010 | Publication | Abbreviated Journal | ||
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Abstract | SCAR 2010 Open Science Conference, 3-6 Août 2010, Buenos Aires, Argentine (conférence invitée) | ||||
Programme | 414;903 | ||||
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Notes | Approved | yes | |||
Call Number | Serial | 1052 | |||
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Author | D. Di Mauro, L. Cafarella, A. Chambodut, S. Lepidi | ||||
Title | EARTH'S MAGNETISM AT THE SOUTH POLE: A VIEW FROM INLAND AND COASTAL STATIONS AND TEMPORARY INSTALLATIONS | Type | Conference - International - Communication | ||
Year | 2010 | Publication | Abbreviated Journal | ||
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Abstract | Contributions to the knowledge of the Earth’s magnetism from polar regions is extremely important to understand the planetary phenomena which occur both below and above the Earth’s surface. At those areas the Earth’s magnetic field is stronger and the spatial and temporal changes are enhanced. At the same time polar regions are areas scarcely covered by observations for the adverse environmental conditions. We report the experience gained in years of management and maintenance of permanent stations (Mario Zucchelli, Dumont d’Urville (Victoria Land) and Concordia stations, Dome C) as well as temporary installations (Talos Dome) in Antarctica, showing how different acquisition systems, analysis and interpretation of data allow the scientific communities to contribute to originating important theories, models and results. | ||||
Programme | 905 | ||||
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Notes | Approved | yes | |||
Call Number | Serial | 1166 | |||
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Author | DETTAI A., LAUTREDOU A.C. ,BONILLO C., HAUTECOEUR M., GOIMBAULT E. , TERCERIE S. , CRUAUD C., COULOUX A., DUHAMEL G., REY O. , CAUSSE R., PRUVOST P., BUSSON F., KOUBBI P., MOTEKI M. , IGLESIAS S., LECOINTRE G.& C. OZOUF-COSTAZ | ||||
Title | The CEAMARC Survey: Barcodes as a multi level tool for new findings. | Type | Conference - International - Communication | ||
Year | 2009 | Publication | Abbreviated Journal | ||
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Abstract | Third International Barcode of Life Conference, 7-13 nov. 2009, Mexico City, Mexico | ||||
Programme | 1124 | ||||
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Notes | Approved | yes | |||
Call Number | Serial | 1309 | |||
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Author | Joliet F., Coutanceau A. | ||||
Title | “Une imagerie des paysages pour l'aménagement du parc Tursujuq (Nunavik) ?” Conférence internationale Mondes Polaires, 26-28 février, Paris | Type | Conference - International - Article with Reading Comitee | ||
Year | 2010 | Publication | Abbreviated Journal | ||
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Abstract | Le projet de Parc National Tursujuq (ou Guillaume Delisle-Lac-à-L’Eau Claire) est en cours et annonce donc une mutation territoriale. Au-delà des études réglementaires préalables menées conjointement par le gouvernement Québécois et les institutions Inuites pour développer un réseau de parc naturels depuis 2002, cette recherche porte sur comment l’analyse des perceptions des paysages du parc Tursujuq permettrait d’en compléter, d’en ajuster la conception. Cette analyse des perceptions est focalisée sur les représentations iconographiques paysagères et les pratiques qui lui sont associées.
En effet, il s’agit ici de rassembler et d’analyser les images « paysage » existantes (archives, sites Web) produites à proximité ou dans le périmètre du parc par les occidentaux d’une part, et de créer un corpus iconographique paysage pour les Inuits d’autre part, de tradition orale. La volonté de choisir un vecteur de représentations paysagères commun pour cette étude a en effet initié la création d’une imagerie paysagère inuite par le biais d’un concours photographique « paysage » et d’un atelier « paysage » de dessins d’enfants. Les choix de cadrage et de composition de l’ensemble des clichés et dessins montreront quelles préférences paysagères sélectionnent certains lieux plus que d’autres, et sélectionnent la présence d’éléments « de composition » plus que d’autres dans les scènes. Corrélativement, quelles pratiques dans le paysage sont convoquées par ces représentations ? Les résultats attendus sont la traduction possible de ces expressions paysagères comme outil de décision dans le périmètre, le zonage, les circuits du futur Parc National Tursujuq. |
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Programme | 1043 | ||||
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Notes | Approved | yes | |||
Call Number | Serial | 1458 | |||
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Author | A. Chambodut and J.-J. Schott | ||||
Title | Current status of permanent magnetic observatories in French Austral and Antartic Territories | Type | Conference - International - Article with Reading Comitee | ||
Year | 2010 | Publication | Abbreviated Journal | ||
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Abstract | The 5 permanent magnetic observatories of French Austral and Antarctic territories (Amsterdam, Concordia, Crozet, Dumont d'Urville and Kerguelen) are integrated as active participants in the worldwide network of magnetic observatories (INTERMAGNET), which monitor variations of the Earth's magnetic field at all time scales.Proceedings of i-DUST (INTER DISCIPLINARY UNDERGROUND SCIENCE AND TECHNOLOGY CONFERENCE), June 9-11 2010, Apt, France. | ||||
Programme | 139;905 | ||||
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Notes | Approved | yes | |||
Call Number | Serial | 1465 | |||
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Author | P. Lognonné, T Spohn, D Breuer, U Christensen, H Igel, V Dehant, T van Hoolst, D Giardini, F Primdahl, J Merayo. S. Vennerstroem, R Garcia, M Wieczorek, C Sotin, A. Mocquet, B Langlais, J.J. Berthelier, M Menvielle, A Pais, W.T Pike, L Szarka, A van den Berg and MAGE and SPICE networks members | ||||
Title | LONG LIVED MARTIAN GEOSCIENCE OBSERVATORY | Type | Conference - International - Article with Reading Comitee | ||
Year | 2007 | Publication | Abbreviated Journal | ||
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Programme | 905 | ||||
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Notes | Approved | yes | |||
Call Number | Serial | 1620 | |||
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Author | Bernard E., Tolle F., Griselin M., Friedt J. And Marlin C. | ||||
Title | Using ground based high resolution photography for seasonal snow and ice dynamics (Austre Lovénbreen, Svalbard, 79°N) | Type | Conference - International - Communication | ||
Year | 2011 | Publication | Abbreviated Journal | ||
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Abstract | 15th Alpine Glaciology Meeting, Munich, Germany, 24-25 fev. 2011 | ||||
Programme | 304 | ||||
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Notes | Approved | yes | |||
Call Number | Serial | 1626 | |||
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Author | Jourdain Bruno, Preunkert Susanne, Cerri Omar, Castebrunet Hlne, Udisti Roberto, Legrand Michel, | ||||
Title | Year-round record of size-segregated aerosol composition in central Antarctica (Concordia station): Implications for the degree of fractionation of sea-salt particles | Type | Journal Article | ||
Year | 2008 | Publication | J. Geophys. Res. | Abbreviated Journal | J. Geophys. Res. |
Volume | 113 | Issue | D14 | Pages | D14308 - |
Keywords | Central Antarctica, size segregated aerosol, sea-salt fractionation, 0305 Atmospheric Composition and Structure: Aerosols and particles, 0345 Atmospheric Composition and Structure: Pollution: urban and regional, 4801 Oceanography: Biological and Chemical: Aerosols, 4906 Paleoceanography: Aerosols, 0368 Atmospheric Composition and Structure: Troposphere: constituent transport and chemistry, 9310 Geographic Location: Antarctica, 4207 Oceanography: General: Arctic and Antarctic oceanography, 3300 Atmospheric Processes, | ||||
Abstract | The origin of sea-salt aerosol that reaches the high Antarctic plateau and is trapped in snow and ice cores remains still unclear. In particular, the respective role of emissions from the open ocean versus those from the sea-ice surface is not yet quantified. To progress on this question, the composition of bulk and size-segregated aerosol was studied in 2006 at the Concordia station (75S, 123E) located on the high Antarctic plateau. A depletion of sulfate relative to sodium with respect to the seawater composition is observed on sea-salt aerosol reaching Concordia from April to September. That suggests that in winter, when the sea-salt atmospheric load reaches a maximum, emissions from the sea-ice surface significantly contribute to the sea-salt budget of inland Antarctica.
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Programme | 414;903;1181 | ||||
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Publisher | AGU | Place of Publication | Editor | ||
Language | Summary Language | Original Title | |||
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Series Volume | Series Issue | Edition | |||
ISSN | 0148-0227 | ISBN | Medium | ||
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Notes | Approved | yes | |||
Call Number | Serial | 1693 | |||
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Author | Sciare J, Favez O, Sarda-Estve R, Oikonomou K, Cachier H, Kazan V, | ||||
Title | Long-term observations of carbonaceous aerosols in the Austral Ocean atmosphere: Evidence of a biogenic marine organic source | Type | Journal Article | ||
Year | 2009 | Publication | J. Geophys. Res. | Abbreviated Journal | J. Geophys. Res. |
Volume | 114 | Issue | D15 | Pages | D15302 - |
Keywords | organic aerosols, black carbon, biogenic aerosols, Austral Ocean, chlorophyll a, 0305 Atmospheric Composition and Structure: Aerosols and particles, 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry, 3339 Atmospheric Processes: Ocean/atmosphere interactions, | ||||
Abstract | Long-term observations of carbonaceous aerosols in the Austral Ocean are reported here for the first time from almost 5 years of continuous filter sampling performed at Amsterdam Island (3748S, 7734E). Black carbon concentrations determined by optical method were among the lowest reported for marine atmosphere, with monthly mean levels ranging from 2–5 ng C/m3 during summer to 7–13 ng C/m3 during winter. A clear seasonal pattern was also observed for organic aerosols, but in opposite phase, with maximum values during the austral summer period (>250 ng C/m3) and minimum concentrations (100 ng C/m3) during winter. This seasonal variation of organic concentration was found to be almost entirely related to the water-insoluble organic carbon fraction, suggesting a primary origin for these organics, most probably through bubble bursting processes. Moreover, this summer maximum observed for organic aerosols was found to be correlated with satellite-derived chlorophyll a concentrations averaged over an oceanic region upwind of the sampling site and characterized by relatively high biogenic activity. This oceanic region being located at 1000–2000 km far away from the monitoring station, atmospheric ageing may have played a significant role on the levels and size-resolved properties of marine organics collected at Amsterdam Island. This biogenic marine organic source of primary origin in the Austral Ocean is fully consistent with similar observations previously reported for the Northern Atlantic Ocean and brings further evidences of the major role of marine organic emissions over remote oceanic regions.
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Programme | 414;415;416 | ||||
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Publisher | AGU | Place of Publication | Editor | ||
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ISSN | 0148-0227 | ISBN | Medium | ||
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Notes | Approved | yes | |||
Call Number | Serial | 1819 | |||
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