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| Author | Picard G, Domine F, Krinner G, Arnaud L, Lefebvre E, | ||||
| Title | Inhibition of the positive snow-albedo feedback by precipitation in interior Antarctica | Type | Journal | ||
| Year | 2012 | Publication | Nature Climate Change | Abbreviated Journal | |
| Volume | Issue | 11 | Pages | 795-798 | |
| Keywords | limate change Cryospheric science | ||||
| Abstract | This study uses satellite data to study snow grain size–albedo relationships over the whole Antarctic Plateau. The findings suggest that increased precipitation resulting from climate change will effectively compensate for the decreased albedo that should have resulted from warming, thereby inhibiting the expected ice–albedo feedback. | ||||
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1013 | ||||
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| Corporate Author | Thesis | Bachelor's thesis | |||
| Publisher | Nature Publishing Group | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1758-6798 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 456 | |||
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| Author | G. Picard, L. Brucker, N. Champollion, L. Arnaud, E. Lefebvre, and M. Fily. | ||||
| Title | Microwave spectral signature and snow grain size profile in Antarctica. | Type | Conference - International - Communication | ||
| Year | 2010 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
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| Abstract | MicroRAD, Washington USA, 2010. | ||||
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1013 | ||||
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| Notes | Approved | yes | |||
| Call Number | Serial | 3226 | |||
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| Author | Champollion N., Arnaud L., Picard G., Gallet J-C., Domine F. and Fily M. | ||||
| Title | A new device to acquire high-resolution vertical profiles of snow Specific Surface Area (SSA) | Type | Conference - International - Communication | ||
| Year | 2010 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
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| Abstract | , EGU Vienna | ||||
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1013 | ||||
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| Notes | Approved | yes | |||
| Call Number | Serial | 3233 | |||
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| Author | M. Fily, L. Arnaud, C. Carmagnola, N. Champollion, P. Cliche, F. Domine, F. Dupont, J.C. Gallet, A. Langlois , B. Montpetit, S. Morin, G. Picard, A. Roy, A. Royer, | ||||
| Title | A set of devices to acquire vertical profiles of snow specific surface area | Type | Conference - International - Communication | ||
| Year | 2010 | Publication | Abbreviated Journal | ||
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| Programme |
1013 | ||||
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| Notes | Approved | yes | |||
| Call Number | Serial | 3234 | |||
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| Author | G. Picard, L. Arnaud, N. Champollion, F. Domine, and M. Fily | ||||
| Title | Deep profiles of snow specific surface area at Dome C, Antarctica, and application to passive microwave remote sensing | Type | Conference - International - Communication | ||
| Year | 2010 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
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| Abstract | , AGU Fall Meeting 2010, Invited – session C22A “Characterization of Grain Size and Other Snowpack Properties”. | ||||
| Programme |
1013 | ||||
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| Notes | Approved | yes | |||
| Call Number | Serial | 3238 | |||
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| Author | BellotHerve, TrouvilliezAlexandre, Naaim-BouvetFlorence, GenthonChristophe, GalleeHubert, | ||||
| Title | Present weather-sensor tests for measuring drifting snow | Type | Journal Article | ||
| Year | 2011 | Publication | ANNALS OF GLACIOLOGY | Abbreviated Journal | |
| Volume | 52 | Issue | 58 | Pages | 176-184 |
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| Abstract | In Antarctica, blowing snow accounts for a major component of the surface mass balance near the coast. Measurements of precipitation and blowing snow are scarce, and therefore collected data would allow testing of numerical models of mass flux over this region. A present weather station (PWS), Biral VPF730, was set up on the coast at Cap Prud'homme station, 5 km from Dumont d'Urville (DDU), principally to quantify precipitation. Since we expected to be able to determine blowing-snow fluxes from the PWS data, we tested this device first on our experimental site, the Lac Blanc pass. An empirical calibration was made with a snow particle counter. Although the physics of the phenomenon was not well captured, the flux outputs were better than those from FlowCapts. The first data from Antarctica were reanalyzed. The new calibration seems to be accurate for estimating the high blowing-snow flux with an interrogation of the precipitation effects.
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1013 | ||||
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| Publisher | Place of Publication | Editor | |||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0260-3055 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 3424 | |||
| Permanent link to this record | |||||
| Author | France J L, King M D, Frey M M, Erbland J, Picard G, MacArthur A, Savarino J, | ||||
| Title | Snow optical properties at Dome C, Antarctica implications for snow emissions and snow chemistry of reactive nitrogen | Type | Journal Article | ||
| Year | 2011 | Publication | Atmos. Chem. Phys. Discuss. | Abbreviated Journal | |
| Volume | 11 | Issue | 4 | Pages | 11959-11993 |
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| Programme |
1013 | ||||
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| Publisher | Copernicus Publications | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1680-7375 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 3590 | |||
| Permanent link to this record | |||||
| Author | Genthon Christophe, Six Delphine, Favier Vincent, Lazzara Matthew, Keller Linda, | ||||
| Title | Atmospheric Temperature Measurement Biases on the Antarctic Plateau | Type | Journal Article | ||
| Year | 2011 | Publication | J. Atmos. Oceanic Technol. | Abbreviated Journal | |
| Volume | 28 | Issue | 12 | Pages | 1598-1605 |
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| Abstract | Observations of atmospheric temperature made on the Antarctic plateau with thermistors housed in naturally (wind) ventilated radiation shields are shown to be significantly warm biased by solar radiation. High incoming solar flux and high surface albedo result in radiation biases in Gill (multiplate) styled shields that can occasionally exceed 10°C in summer in case of low wind speed. Although stronger and more frequent when incoming solar radiation is high, biases exceeding 8°C are found even when solar is less than 200 Wm-2. Comparing with sonic thermometers, which are not affected by radiation but which are too complex to be routinely used for mean temperature monitoring, commercially available aspirated shields are shown to efficiently protect thermistor measurements from solar radiation biases. Most of the available in situ reports of atmospheric temperature on the Antarctic plateau are from automatic weather stations that use passive shields and are thus likely warm biased in the summer. In spite of low power consumption, deploying aspirated shields at remote locations in such a difficult environment may be a challenge. Bias correction formulae are not easily derived and are obviously shield dependent. On the other hand, because of a strong dependence of bias to wind speed, filtering out temperature reports for wind speed less than a given threshold (about 4-6 ms-1 for the shields tested here) may be an efficient way to quality control the data, albeit at the cost of significant data loss and records biased towards high wind speed cases. | ||||
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1013 | ||||
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| Publisher | American Meteorological Society | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0739-0572 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 3681 | |||
| Permanent link to this record | |||||
| Author | Cyril Palerme | ||||
| Title | Étude des précipitations en Antarctique par télédétection micro-onde passive | Type | Report | ||
| Year | 2011 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
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| Abstract | Le bilan de masse de l'Antarctique est un facteur clé concernant l'élévation du niveau des
mers. Les différents modèles ayant contribué à la réalisation du dernier rapport IPCC prédisent une augmentation des précipitations entre 0 et 50% en Antarctique d'ici 2100. L'acquisition de données de terrain sur ce continent étant difficile, nous ne savons pas mesurer les événements de précipitation, et par conséquent comment évaluer la fiabilité des différents modèles. Néanmoins, les données micro-ondes passives pourraient permettre de détecter les chutes de neige. Lorsque de la neige fraîche se dépose, l'émissivité du manteau neigeux augmente généralement, ce qui devrait être repérable dans les données de température de brillance. Cependant d'autres processus peuvent affecter l'émissivité de la neige : les variations de la température de surface, la fonte, le vent, la formation de givre de surface... Il est donc nécessaire de déterminer quel processus est responsable d'une augmentation de la température de brillance. En comparant les signaux satellites aux réanalyses ERA interim et à des mesures de terrain, ce stage a consisté à la mise au point d'une méthode permettant de détecter les chutes de neige. Cet algorithme devrait permettre de réaliser des statistiques sur ce sujet. Les modèles climatiques divergeant fortement sur le nombre d'évènements de précipitation par an, nous pourrions alors évaluer la capacité des différents modèles à reproduire ce paramètre. |
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| Programme |
1013 | ||||
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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 | 3682 | |||
| Permanent link to this record | |||||
| Author | C. Amory | ||||
| Title | ANALYSE PRELIMINAIRE DE DONNEES METEOROLOGIQUES EN CONTEXTE GLACIAIRE. CAS DE DOME C (ANTARCTIQUE, ANNEE 2010) ET DU GLACIER D’ARGENTIERE (ALPES, FRANCE, ETE 2010) | Type | Report | ||
| Year | 2011 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
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| Abstract | Ce stage traite de deux cas d’étude météorologique en contexte glaciaire de haute altitude, à
Dôme C (Antarctique, 3250 m d’altitude ) et sur la glacier d’Argentière (Alpes françaises, de 2400 à 2800 m d’altitude). L’analyse des données issues de deux stations météorologiques automatiques implantées à 25 km au Nord et au Sud du site de Dôme C pendant l’année 2010 a confirmé l’existence de hausses ponctuelles et de grande ampleur des températures autour du site. Ces évènements chauds ont déjà été enregistrés à Dôme C même, et leur origine est encore mal connue. L’estimation de bilans de masse estivaux pour l’année 2010 en zone d’ablation par la méthode degré-jour, pour deux profils transversaux du réseau de balises implantées sur le glacier d’Argentière dans le massif du Mont-Blanc donne des résultats encourageants. Les valeurs obtenues sont satisfaisantes comparées aux bilans de masse évalués par lecture de balises. |
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| Programme |
1013 | ||||
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| Address | |||||
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| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
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| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 3683 | |||
| Permanent link to this record | |||||