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	Author	Thomas Frederikse, Maya K. Buchanan, Erwin Lambert, Robert E. Kopp, Michael Oppenheimer, D. J. Rasmussen, Roderik S. W. van de Wal
	Title	Antarctic Ice Sheet and emission scenario controls on 21st-century extreme sea-level changes			Type	Journal
	Year	2020	Publication	Nature Communications	Abbreviated Journal
	Volume	11	Issue	1	Pages	390
	Keywords
	Abstract	Uncertainties in Representative Concentration Pathway (RCP) scenarios and Antarctic Ice Sheet (AIS) melt propagate into uncertainties in projected mean sea-level (MSL) changes and extreme sea-level (ESL) events. Here we quantify the impact of RCP scenarios and AIS contributions on 21st-century ESL changes at tide-gauge sites across the globe using extreme-value statistics. We find that even under RCP2.6, almost half of the sites could be exposed annually to a present-day 100-year ESL event by 2050. Most tropical sites face large increases in ESL events earlier and for scenarios with smaller MSL changes than extratropical sites. Strong emission reductions lower the probability of large ESL changes but due to AIS uncertainties, cannot fully eliminate the probability that large increases in frequencies of ESL events will occur. Under RCP8.5 and rapid AIS mass loss, many tropical sites, including low-lying islands face a MSL rise by 2100 that exceeds the present-day 100-year event level.
	Programme	688
	Campaign
	Address
	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	2041-1723	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	6437
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	Author	Romero Oscar E, Van de Vijver Bart,
	Title	Cocconeis crozetensis, a new monoraphid diatom from subantarctic freshwater and moss habitats			Type	Journal Article
	Year	2011	Publication	Diatom Research	Abbreviated Journal	0269-249X
	Volume	26	Issue	1	Pages	89-98
	Keywords
	Abstract	Ultrastructural observations of one previously misidentified freshwater species of a Cocconeis (Bacillariophyceae) from the Crozet Archipelago, Indian Sector of the Southern Ocean, are presented. Cocconeis crozetensis sp. nov. possesses small valves (apical axis: 10?13 ?m; transapical axis: 6.7?8.4 ?m). The main frustule features that distinguish the proposed new species are: (1) the sternum valve (SV) areolae with an external vola and the internal vela, (2) the submarginal area of the raphe-sternum valve, and (3) the morphology of valvocopula and fimbriae of the SV. Possible morphological relationships with several other small Cocconeis, such as C. neodiminuta, C. neothumensis, C. placentula var. pseudolineata and C. pseudothumensis, as well as its morphological similarities with placentuloid Cocconeis are discussed. Reliable identification of C. crozetensis sp. nov. under light microscopy can prove difficult for less-experienced diatomologists and ecologists, and the use of electron microscopy proves to be unavoidable for its correct identification.
	Programme	136
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	Address
	Corporate Author				Thesis
	Publisher	Taylor & Francis	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0269-249X	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	3419
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	Author	K. BOCCHIALINI, M. MENVIELLE, A. CHAMBODUT, N. CORNILLEAU-WEHRLIN, D. FONTAINE, B. GRISON, C. LATHUILLERE, A. MARCHAUDON, M. PICK, F. PITOUT, S. REGNIER, B. SCHMIEDER, N. VILMER, Y. ZOUGANELIS
	Title	Statistical analysis of CMEs' geoeffectiveness over one year of solar maximum during cycle 23			Type	Conference - International - Poster
	Year	2015	Publication		Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract	UGGI International Conference 2015
	Programme	312
	Campaign
	Address
	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	6098
Permanent link to this record



	Author	Yagova, N.V.; Pilipenko, V.A.; Lanzerotti, L.J.; Engebretson, M.J.; Rodger, A.S.; Lepidi, S.; Papitashvili, V.O.
	Title	Two-dimensional structure of long-period pulsations at polar latitudes in Antarctica			Type	Journal Article
	Year	2004	Publication	Journal of geophysical research-atmospheres	Abbreviated Journal	J. Geophys. Res.
	Volume	109	Issue		Pages
	Keywords	2776 Magnetospheric Physics: Polar cap phenomena; 2752 Magnetospheric Physics: MHD waves and instabilities; 2744 Magnetospheric Physics: Magnetotail; 2724 Magnetospheric Physics: Magnetopause, cusp, and boundary layers
	Abstract	Two-dimensional (2-D) statistical distributions of spectral power and coherence of polar geomagnetic variations with quasi-periods about 10 min are analyzed using data from magnetometer arrays in Antarctica. Examination of the 2-D patterns of spectral power and coherence shows the occurrence of significant variations in geomagnetic power levels but with low spatial coherence near the cusp projection and in the auroral region. At the same time, low-amplitude pulsations, which we coin Pi cap 3 pulsations, are very coherent throughout the polar cap. The region occupied by coherent Pi cap 3 pulsations is shifted toward local MLT night from the geomagnetic pole and is decoupled from the regions of auroral and cusp ULF activity. The spectral power varies with time at polar latitudes in a manner different from that at auroral latitudes. Diurnal variations of power at different stations at the same geomagnetic latitude exhibit different behavior depending on the station's position relative to geomagnetic and geographic poles. This asymmetry is shown to be partly attributed to the variations of the ionospheric conductance. The primary source of polar pulsations is probably related to intermittent magnetosheath turbulence and tail lobe oscillations, though a particular propagation mechanism has not as yet been identified.
	Programme	905
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	Address
	Corporate Author				Thesis
	Publisher	American Geophysical Union	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0148-0227	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number	IPEV @ Thierry.Lemaire @			Serial	5539
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	Author	Tomasi, C.; Petkov, B.; Benedetti, E.; Vitale, V.; Pellegrini, A.; Dargaud, G.; De Silvestri, L.; Grigioni, P.; Fossat, E.; Roth, W.L.; Valenziano, L.
	Title	Characterization of the atmospheric temperature and moisture conditions above Dome C (Antarctica) during austral summer and fall months			Type	Journal Article
	Year	2006	Publication	Journal of geophysical research-atmospheres	Abbreviated Journal	J. Geophys. Res.
	Volume	111	Issue		Pages
	Keywords	radiosounding measurements; precipitable water; Antarctic atmosphere; 3349 Atmospheric Processes: Polar meteorology; 1655 Global Change: Water cycles; 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry; 7539 Solar Physics, Astrophysics, and Astronomy: Stellar astronomy
	Abstract	Two sets of radiosounding measurements were taken at Dome C (Antarctica) in December 2003 and January 2003 and 2004, using RS80-A, RS80-H, and RS90 Vaisala radiosondes, and from March to May 2005, employing the RS92 model. They were examined following accurate correction procedures to remove the main relative humidity dry bias and the temperature and humidity lag errors. The results showed that a strong cooling usually characterizes the thermal conditions of the whole troposphere from December/January to April/May, with an average temperature decrease from 245 to 220 K at the ground, of around 10 K at upper tropospheric levels, and of more than 15 K in the lower stratosphere. The relative humidity data were found to be affected by dry bias of 5–10%, on average, for the RS80-A and RS80-H Humicap sensors and by smaller percentages for the other sensors. The mean monthly vertical profiles of absolute humidity were found to decrease sharply throughout the troposphere, especially within the first 3 km, and to diminish considerably passing from December/January to March/April/May, with average values of precipitable water decreasing from 0.75 to 0.28 mm, median values from 0.69 to 0.25 mm, and first and third quartiles from 0.60 to 0.22 mm and from 0.87 to 0.34 mm, respectively. The results demonstrate that Dome C (where a permanent scientific station has been open for winter operations since austral winter 2005) is a site of comparable quality to the South Pole for both validation of satellite radiance measurements and astronomic observations in the infrared, submillimetric, and millimetric wavelength range, performed with large telescopes that cannot be carried on satellites.
	Programme	908
	Campaign
	Address
	Corporate Author				Thesis
	Publisher	American Geophysical Union	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0148-0227	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number	IPEV @ Thierry.Lemaire @			Serial	5528
Permanent link to this record



	Author	Juliana A. Vianna, Daly Noll, Gisele P. M. Dantas, Maria Virginia Petry, Andrés Barbosa, Daniel González-Acuña, Céline Le Bohec, Francesco Bonadonna, Elie Poulin
	Title	Marked phylogeographic structure of Gentoo penguin reveals an ongoing diversification process along the Southern Ocean			Type	Book Chapter
	Year	2017	Publication	Molecular phylogenetics and evolution	Abbreviated Journal
	Volume	107	Issue		Pages	486-498
	Keywords	Climate change Demographic history Polar region Population structure Seabirds
	Abstract	Two main hypotheses have been debated about the biogeography of the Southern Ocean: (1) the Antarctic Polar Front (APF), acting as a barrier between Antarctic and sub-Antarctic provinces, and (2) the Antarctic Circumpolar Current (ACC), promoting gene flow among sub-Antarctic areas. The Gentoo penguin is distributed throughout these two provinces, separated by the APF. We analyzed mtDNA (HVR1) and 12 microsatellite loci of 264 Gentoo penguins, Pygoscelis papua, from 12 colonies spanning from the Western Antarctic Peninsula and the South Shetland Islands (WAP) to the sub-Antarctic Islands (SAI). While low genetic structure was detected among WAP colonies (mtDNA ФST=0.037–0.133; microsatellite FST=0.009–0.063), high differentiation was found between all SAI and WAP populations (mtDNA ФST=0.678–0.930; microsatellite FST=0.110–0.290). These results suggest that contemporary dispersal around the Southern Ocean is very limited or absent. As predicted, the APF appears to be a significant biogeographical boundary for Gentoo penguin populations; however, the ACC does not promote connectivity in this species. Our data suggest demographic expansion in the WAP during the last glacial maximum (LGM, about 20kya), but stability in SAI. Phylogenetic analyses showed a deep divergence between populations from the WAP and those from the SAI. Therefore, taxonomy should be further revised. The Crozet Islands resulted as a basal clade (3.57Mya), followed by the Kerguelen Islands (2.32Mya) as well as a more recent divergence between the Falkland/Malvinas Islands and the WAP (1.27Mya). Historical isolation, local adaptation, and past climate scenarios of those Evolutionarily Significant Units may have led to different potentials to respond to climate changes.
	Programme	137,354
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	Address
	Corporate Author				Thesis	Bachelor's thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1055-7903	ISBN	1055-7903	Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	6578
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	Author	Ghigliotti Laura, Cheng C-H Christina, Bonillo Cé, line, Coutanceau Jean-Pierre, Pisano Eva,
	Title	In Situ Gene Mapping of Two Genes Supports Independent Evolution of Sex Chromosomes in Cold-Adapted Antarctic Fish			Type	Journal Article
	Year	2013	Publication	BioMed Research International	Abbreviated Journal
	Volume	2013	Issue		Pages
	Keywords
	Abstract	Two genes, that is, 5S ribosomal sequences and antifreeze glycoprotein (AFGP) genes, were mapped onto chromosomes of eight Antarctic notothenioid fish possessing a X1X1X2X2/X1X2Y sex chromosome system, namely, Chionodraco hamatus and Pagetopsis macropterus (family Channichthyidae), Trematomus hansoni, T. newnesi, T. nicolai, T. lepidorhinus, and Pagothenia borchgrevinki (family Nototheniidae), and Artedidraco skottsbergi (family Artedidraconidae). Through fluorescence in situ hybridization (FISH), we uncovered distinct differences in the gene content of the Y chromosomes in the eight species, with C. hamatus and P. macropterus standing out among others in bearing 5S rDNA and AFGP sequences on their Y chromosomes, respectively. Both genes were absent from the Y chromosomes of any analyzed species. The distinct patterns of Y and non-Y chromosome association of the 5S rDNA and AFGP genes in species representing different Antarctic fish families support an independent origin of the sex heterochromosomes in notothenioids with interesting implications for the evolutionary/adaptational history of these fishes living in a cold-stable environment.
	Programme	1124
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	Address
	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	2314-6133	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	4524
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	Author	Leduc-Leballeur Marion, Picard Ghislain, Mialon Arnaud, Arnaud Laurent, Lefebvre Eric, Possenti Philippe, Kerr Yann,
	Title	Modeling L-Band Brightness Temperature at Dome C in Antarctica and Comparison With SMOS Observations			Type	Book Chapter
	Year	2015	Publication	IEEE Transactions on Geoscience and Remote Sensing	Abbreviated Journal
	Volume	53	Issue	7	Pages	4022-4032
	Keywords	Antarctica, Brightness temperature, Dome C, Ice, L-band, L-band brightness temperature, L-band characteristics, Microwave, SMOS observations, Scattering, Snow, Temperature measurement, brightness suggest snowpack, emission e-folding depth, hydrological techniques, incidence angles, ocean waves, radiative transfer, radiative transfer (RT) theory, radiative transfer theory, remote sensing, seasonal variations, snow, snow emission stability, snow properties, snowpack variability density, soil, soil moisture ocean salinity satellite observation, wave approach, wave theory,
	Abstract	Two electromagnetic models were used to simulate snow emission at L-band from in situ measurements of snow properties collected at Dome C in Antarctica. Two different approaches were used: one based on the radiative transfer theory and the other on the wave approach. The soil moisture ocean salinity (SMOS) satellite observations performed at 1.4 GHz (21 cm) were used to check the validity of these models. Model results based on the wave approach were in good agreement with SMOS observations, particularly for incidence angles lower than 55°. Comparisons suggest that the wave approach is more suitable to simulate brightness temperature at L-band than the transfer radiative theory, because interference between the layers of the snowpack is better taken into account. The model based on the wave approach was then used to investigate several L-band characteristics at Dome C. The emission e-folding depth, i.e., 67% of the signal, was estimated at 250 m, and 99% of the signal emanated from the top 900 m. L-band brightness temperature is only slightly affected by seasonal variations in surface temperature, confirming the high temporal stability of snow emission at low frequency. Sensitivity tests showed that good knowledge of density variability in the snowpack is essential for accurate simulations in L-band.
	Programme	1073,1110
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	Address
	Corporate Author				Thesis	Bachelor's thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0196-2892	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	6127
Permanent link to this record



	Author	Andersen K. K., N. Azuma, J.-M. Barnola, M. Bigler, P. Biscaye, N. Caillon, J. Chappellaz, H. B. Clausen, D. Dahl-Jensen, H. Fischer, J. Flückiger, D. Fritzsche, Y. Fujii, K. Goto-Azuma, K. Grønvold, N. S. Gundestrup, M. Hansson, C. Huber, C. S. Hvidberg, S. J. Johnsen, U. Jonsell, J. Jouzel, S. Kipfstuhl, A. Landais, M. Leuenberger, R. Lorrain, V. Masson-Delmotte, H. Miller, H. Motoyama, H. Narita, T. Popp, S. O. Rasmussen, D. Raynaud, R. Rothlisberger, U. Ruth, D. Samyn, J. Schwander, H. Shoji, M.-L. Siggard-Andersen, J. P. Steffensen, T. Stocker, A. E. Sveinbjörnsdóttir, A. Svensson, M. Takata, J.-L. Tison, Th. Thorsteinsson, O. Watanabe, F. Wilhelms & J. W. C. White
	Title	High resolution climate record of the northern hemisphere reaching into last interglacial period.			Type	Journal Article
	Year	2005	Publication	Nature	Abbreviated Journal	Nature
	Volume	431	Issue		Pages	147-151
	Keywords
	Abstract	Two deep ice cores from central Greenland, drilled in the 1990s, have played a key role in climate reconstructions of the Northern Hemisphere, but the oldest sections of the cores were disturbed in chronology owing to ice folding near the bedrock. Here we present an undisturbed climate record from a North Greenland ice core, which extends back to 123,000 years before the present, within the last interglacial period. The oxygen isotopes in the ice imply that climate was stable during the last interglacial period, with temperatures 5 °C warmer than today. We find unexpectedly large temperature differences between our new record from northern Greenland and the undisturbed sections of the cores from central Greenland, suggesting that the extent of ice in the Northern Hemisphere modulated the latitudinal temperature gradients in Greenland. This record shows a slow decline in temperatures that marked the initiation of the last glacial period. Our record reveals a hitherto unrecognized warm period initiated by an abrupt climate warming about 115,000 years ago, before glacial conditions were fully developed. This event does not appear to have an immediate Antarctic counterpart, suggesting that the climate see-saw between the hemispheres (which dominated the last glacial period) was not operating at this time.
	Programme	458
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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	0028-0836	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	3102
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	Author	Park, Y.-H.; Roquet, F.; Vivier, F.
	Title	Quasi-stationary ENSO wave signals versus the Antarctic Circumpolar Wave scenario			Type	Journal Article
	Year	2004	Publication	Geophysical research letters	Abbreviated Journal
	Volume	31	Issue		Pages
	Keywords	4215 Oceanography: General: Climate and interannual variability; 4207 Oceanography: General: Arctic and Antarctic oceanography; 4522 Oceanography: Physical: El Nino
	Abstract	Two conflicting views on the causal mechanism of the Antarctic interannual variability often appear in the literature, i.e., whether it is remotely teleconnected to tropical ENSO events or is a self-sustained eastward propagating circumpolar wave generated locally by an ocean-atmosphere coupling mechanism. Using a Fourier decomposition into stationary and propagating components of several oceanic and atmospheric variables, we show that most of the Antarctic interannual variability can be explained by a geographically phase-locked standing wave train linked to tropical ENSO episodes. This ENSO-modulated quasi-stationary variability is not zonally uniform, rather, the strongest ENSO impact is consistently concentrated in the Pacific sector of the Southern Ocean. The eastward propagating wave component is found to be not only minor (25% of variability) but also intermittent in phase, yielding little support for the so-called Antarctic Circumpolar Wave scenario.
	Programme	335
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	Address
	Corporate Author				Thesis
	Publisher	American Geophysical Union	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0094-8276	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number	IPEV @ Thierry.Lemaire @			Serial	5624
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