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Thiebot Jb, Ropert-coudert Y, Raclot T, Takahashi A |
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Title |
Distribution, behaviour and habitat of Adélie penguins across Antarctic seasonal changes |
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2017 |
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23rd international symposium on polar sciences, incheon, republic of korea, 17–18/5/2017 |
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1091 |
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8108 |
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Ropert-Coudert Y |
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Title |
Adélie penguins Antarctic Observatory |
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Communication |
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2019 |
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Seminars of the wwf, woking, UK, 6 June 2019 |
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1091 |
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8109 |
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Ropert-coudert Y |
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Title |
Life Sciences at SCAR. Presentation to the IUBS symposium. |
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2018 |
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Polar 2018, scar/iasc open science conference, Davos, Switzerland, 15-28/6/2018 |
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1091 |
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8104 |
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Bonadonna F |
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It was a Dark and Stormy Night |
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2018 |
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Symposium:sochal olfactory communication 8-9 october 2018 |
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354 |
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8379 |
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Grémillet D & Fort J |
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Recent French contributions to the Arctic Migratory Bird Initiative |
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Communication |
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2018 |
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Arctic Migratory Bird Initiative. Rovaniemi (Finland). |
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388 |
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8486 |
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Brice Temime Roussel, Meeta Cesler-Maloney, Benjamin Chazeau, Amna Ijaz, Natalie Brett, Katharine Law, Slimane Bekki, Jingqiu Mao, Damien Ketcherside, Vanessa Selimovic, Lu Hu, William R. Simpson, Barbara D'Anna |
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Concentrations and Sources of VOCs during wintertime urban pollution at Fairbanks, Alaska |
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Communication |
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2022 |
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AGU Fall Meeting 2022, 11-15 December 2023, San Francisco, USA |
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2022 |
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A51J-04 |
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Fairbanks, Alaska is an urban area that has multiple local emission sources including power plants, domestic heating, and mobile sources, leading to severe wintertime pollution events during cold stable episodes where strong temperature inversions limit pollutant dispersion. In order to evaluate the individual contribution of these sources on Volatile Organic Compounds (VOCs) concentrations, ground-based measurements were carried out at high temporal resolution (2 minutes) using on-line instrumentation (Proton Transfer Reaction Time of Flight Mass Spectrometer: PTR-ToF-MS) during the winter 2022 in downtown Fairbanks as part of the Alaskan Layered Pollution and Chemical Analysis (ALPACA) 2022 field experiment. These measurements are recorded in the urban business district, which probably enhances the traffic component compared to domestic heating. From the detailed analysis of the mass spectra acquired in the 0-500 amu range, more than 330 ions were found of interest for further investigation. Source apportionment analysis was performed using Positive Matrix Factorization (PMF) resolved with the multilinear engine (ME-2) approach. Based on their mass spectral profiles, diurnal cycles and correlation with external collocated measurements (gaseous pollutants: CO, CO2, NOx, SO2, ozone, and specific particulate matter markers), the factors identified could be related to mobile sources (gasoline-like and diesel-like traffic), to heating (residential, diesel-like heating in addition to a couple of specific biomass burning, and to non-combustion sources attributed to secondary processes. This study contributes to the Air Pollution in the Arctic: Climate, Environment and Societies – Alaskan Layered Pollution And Chemical Analysis (PACES-ALPACA) initiative. The French contribution is part of the CASPA (Climate-relevant Aerosol Sources and Processes in the Arctic)/IPEV project. |
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1215 |
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8510 |
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Sarah Albertin, Slimane Bekki, Joël Savarino |
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Nitrogen isotopes (δ15N) and oxygen isotope anomalies (Δ17O, δ18O) in atmospheric nitrogen dioxide : a new perspective for isotopic constraints on oxidation and aerosols formation processes |
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Communication |
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2021 |
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EGU General Assembly 2021, 10-30 april 2021, Vienna, Austria |
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1215 |
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EGU21-2634 |
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8511 |
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Albertin, S., Savarino, J., Bekki, S., T. Roberts, T., Barret, B., Mao, J., Simpson, W., Law, K. |
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Isotopic constraints on the sources and fate of atmospheric nitrate in Fairbanks, Alaska: preliminary results of the pre-ALPACA campaign |
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Communication |
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2021 |
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Paces meeting, may 2021 |
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1215 |
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8513 |
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Najat Bhiry, Pierre Derosiers, Dominique Todisco, Dominique Mmarguerie |
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Paleoecology and geoarchaeology of Cape Smith, Nunavik, Canada |
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2018 |
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20th EGU General Assembly, EGU2018, Proceedings from the conference held 4-13 April, 2018 in Vienna, Austria |
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10744 |
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Cape Smith is an island near Akulivik, located on the northeastern coast of Hudson Bay (Canada). The Kangiakallak site (JeGn-2) is a large and mixed Palaeoeskimo and Thule/Inuit archaeological site located in a valley in the northeastern part of Cape Smith. The Dorset occupants built shallow semi-subterranean houses here on a plateau at the top of the valley. Later, the Thule/Inuit inhabitants constructed much deeper semi-subterranean sod houses (qarmait) on the edge of the beach ridges. The evidence shows that study region was a significant site for winter camps, likely because of its proximity to the partial polynya situated between the island and the mainland. The Kangiakallak site was among the first sites excavated by southern scientists in the 1940's and 1950's (Manning 1951) Our multidisciplinary research team conducted from 2011 excavations to answer some of the questions posed by the local Akulivik residents. The success of this project is largely due to community involvement and it shows the value of community-based research. The combination of paleoecological, paleogeographical and geoarchaeology data with archaeological and historical data made it possible to document the evolution of paleoenvironments and the habitability of the northeastern of Cape Smith, as well as the interactions between humans (Dorset, Thule/Inuit) and the environment in the context of climate change. In this presentation, we will provide a summary of the data from this interdisciplinary research. |
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8523 |
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Simon Thomas, Pierre-Louis Blelly, Aurelie Marchaudon, Julian Eisenbeis, Samuel Bird |
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Simulating the Response of the Ionosphere in IPIM to Extreme Space Weather |
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2021 |
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AGU Fall Meeting 2021, 13-17 December 2021, New Orleans, USA |
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2021 |
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SM45C-2291 |
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The IRAP Plasmasphere Ionosphere Model (IPIM) is an ionospheric model which describes the transport equations of ionospheric plasma species along magnetic closed field lines. As input, the previous iteration of IPIM used basic models to provide estimations of the solar wind conditions, convection, and precipitation within the ionosphere. In this presentation, we discuss the development of a new operational version of IPIM as part of the EUHFORIA project to monitor and forecast space weather conditions and hazards. The developments of the model include using in-situ solar wind observations from the OMNI data set, ionospheric radar data of plasma motions from the Super Dual Auroral Radar Network (SuperDARN), and precipitation data from the Ovation model, as inputs to the model. A new conductivity module for low latitudes has also been developed for help in the simulation of geomagnetically induced currents. We present the first results from the latest IPIM version which explore the ionosphere's response to different solar wind conditions, before focussing on an extreme coronal mass ejection on 14th July 2012 with clear magnetic cloud and southward magnetic field. For this event, we explore simulations of important plasma properties of the ionosphere and compare with previous model iterations and all available observations and hence describe the skill of using IPIM as a space weather forecasting tool. |
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8524 |
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