| Records |
| Author |
Legrand, M.; Sciare, J.; Jourdain, B.; Genthon, C. |
| Title |
Subdaily variations of atmospheric dimethylsulfide, dimethylsulfoxide, methanesulfonate, and non-sea-salt sulfate aerosols in the atmospheric boundary layer at Dumont d'Urville (coastal Antarctica) during summer |
Type |
Journal Article |
| Year |
2001 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
Volume  |
106 |
Issue |
|
Pages |
|
| Keywords |
|
| Abstract |
A study of atmospheric dimethylsulfide (DMS) and dimethylsulfoxide (DMSO) was conducted on a subdaily basis during austral summer months (450 samples from mid-December 1998 to late-February 1999) at Dumont d'Urville, a coastal Antarctic site (66° 40'S, 140° 01'E). In addition, subdaily aerosol samplings were analyzed for particulate methanesulfonate (MSA) and non-sea-salt sulfate (nssSO4 2?). During these summer months, DMS and DMSO levels fluctuated from 34 to 2923 pptv (mean of 290 ± 305 pptv) and from 0.4 to 57 pptv (mean of 3.4 ± 4.4 pptv), respectively. Mean MSA and non-sea-salt sulfate (nssSO4 2?) mixing ratios were close to 12.5 ± 8.2 pptv and 68.1 ± 35.0 pptv, respectively. In two occasions characterized by stable wind conditions and intense insolation, it was possible to examine the local photochemistry of DMS. During these events, DMSO levels tracked quite closely the solar flux and particulate MSA levels were enhanced during the afternoons. Photochemical calculations reproduce quite well observed diurnal variations of DMSO when we assume an 0.8 yield of DMSO from the DMS/OH addition channel and an heterogeneous loss rate of DMSO proportional to the OH radical concentration: 0.5×10?10 [OH] + 5.5x10?5 (in s?1). If correct, on a 24 hour average the heterogeneous loss of DMSO is estimated to be 2 times faster than the DMSO/OH gas phase oxidation in these regions. Very low levels of DMSO were found in the aerosol phase (less than 0.01 pptv), suggesting that an efficient oxidation of DMSO subsequently takes place onto the aerosol surface. The observed increase of MSA levels which takes place quasi-immediately after the noon DMSO maximum suggests that an heterogeneous oxidation of DMSO onto aerosols represents a more efficient pathway producing MSA compared to the gas phase DMSO/OH pathway. Since only a third of the total amount of DMSO lost can be explained by the observed enhancement of MSA levels, further studies investigating other species including methanesulfinic acid and dimethylsulfone (DMSO2) formed during the oxidation of DMS are here needed. When katabatic winds took place, bringing continental Antarctic air at the site, enrichments of DMSO relative to DMS and MSA relative to non-sea-salt sulfate levels were observed. That is in agreement with the hypothesis of an accumulation of DMSO and probably of gaseous MSA in the free Antarctic troposphere in relation to a less efficient heterogeneous loss rate of DMSO. |
| Programme |
241;415 |
| 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 |
5636 |
| Permanent link to this record |
| |
|
| |
| Author |
Jenouvrier S., Caswell H., Barbraud C., Holland M., Str Oelig VE J., Weimerskirch H. |
| Title |
Demographic models and IPCC climate projections predict the decline of an emperor penguin population |
Type |
Journal Article |
| Year |
2009 |
Publication |
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
| Volume |
106 |
Issue |
|
Pages |
1844-1847 |
| Keywords |
|
| Abstract |
|
| Programme |
109 |
| 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 |
0027-8424 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
5721 |
| Permanent link to this record |
| |
|
| |
| Author |
Fraser C.I., Nikula R., Spencer H.G. & Waters J.M. |
| Title |
Kelp genes reveal effects of subantarctic sea ice during the Last Glacial Maximum |
Type |
Journal Article |
| Year |
2009 |
Publication |
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
| Volume |
106 |
Issue |
|
Pages |
3249-3253 |
| Keywords |
|
| Abstract |
Ce travail, qui n'est pas issu du programme 136, utilise des prélèvements d'algues et de crustacés marins collectés par des membres du 136 à Crozet et Kerguelen |
| Programme |
136 |
| 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 |
0027-8424 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
5935 |
| Permanent link to this record |
| |
|
| |
| Author |
Sandholt P.E., Farrugia C.J., Cowley S.W.H., Lester M., Denig W.F., Cerisier J.C., Milan S.E., Moen J., Trondsen E. & Lybekk B. |
| Title |
Dynamic cusp aurora and associated pulsed reverse convection during northward interplanetary magnetic. |
Type |
Journal Article |
| Year |
2000 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
| Volume |
105 |
Issue |
a6 |
Pages |
12869-12894 |
| Keywords |
|
| Abstract |
|
| Programme |
312 |
| Campaign |
|
| 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 |
0148-0227 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
664 |
| Permanent link to this record |
| |
|
| |
| Author |
Sciare J., Kanakidou M. & Mihalopoulos N. |
| Title |
Diurnal and seasonal variation of atmospheric dimethylsulfoxide (DMSO) at Amsterdam Island Indian Ocean. |
Type |
Journal Article |
| Year |
2000 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
| Volume |
105 |
Issue |
17 |
Pages |
257-265 |
| Keywords |
|
| Abstract |
|
| Programme |
344 |
| 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 |
0148-0227 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
1273 |
| Permanent link to this record |
| |
|
| |
| Author |
Andre R., Villain J.P., Krassnosel'skikh V. & Hanuise C. |
| Title |
Super dual aurora radar network observations of velocity-divergent structures in the F region ionosphere. |
Type |
Journal Article |
| Year |
2000 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
| Volume |
105 |
Issue |
a9 |
Pages |
20899-20908 |
| Keywords |
|
| Abstract |
|
| Programme |
312 |
| Campaign |
|
| 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 |
0148-0227 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
1603 |
| Permanent link to this record |
| |
|
| |
| Author |
Andre R., Pinnock M. & Rodger A.S. |
| Title |
Identification of the low-altitude cusp by Super Dual Auroral Radar Network radars: a physical explanation for the empirically derived signature. |
Type |
Journal Article |
| Year |
2000 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
| Volume |
105 |
Issue |
a12 |
Pages |
27081-27093 |
| Keywords |
|
| Abstract |
|
| Programme |
312 |
| Campaign |
|
| 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 |
0148-0227 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
1645 |
| Permanent link to this record |
| |
|
| |
| Author |
Krinner G., Raynaud D., Outriaux C. & Dang H. |
| Title |
Simulations of the Last Glacial Maximum ice sheet surface climate : Implications for the interpretation of ice core air content. |
Type |
Journal Article |
| Year |
2000 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
| Volume |
105 |
Issue |
d2 |
Pages |
2059-2070 |
| Keywords |
|
| Abstract |
|
| Programme |
902 |
| 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 |
0148-0227 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
2279 |
| Permanent link to this record |
| |
|
| |
| Author |
Patris N., Delmas R.J. & Jouzel J. |
| Title |
Isotopic signatures of sulfur in shallow Antarctic ice cores. |
Type |
Journal Article |
| Year |
2000 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
| Volume |
105 |
Issue |
d6 |
Pages |
7071-7078 |
| Keywords |
|
| Abstract |
|
| Programme |
902 |
| 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 |
0148-0227 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
2280 |
| Permanent link to this record |
| |
|
| |
| Author |
Le Bohec, C.; Durant, J.M.; Gauthier-Clerc, M.; Stenseth, N.C.; Park, Y.-H.; Pradel, R.; Grémillet, D.; Gendner, J.-P.; Le Maho, Y. |
| Title |
King penguin population threatened by Southern Ocean warming |
Type |
Journal Article |
| Year |
2008 |
Publication |
Proceedings of the National Academy of Sciences |
Abbreviated Journal |
|
| Volume |
105 |
Issue |
7 |
Pages |
2493-2497 |
| Keywords |
|
| Abstract |
Seabirds are sensitive indicators of changes in marine ecosystems and might integrate and/or amplify the effects of climate forcing on lower levels in food chains. Current knowledge on the impact of climate changes on penguins is primarily based on Antarctic birds identified by using flipper bands. Although flipper bands have helped to answer many questions about penguin biology, they were shown in some penguin species to have a detrimental effect. Here, we present for a Subantarctic species, king penguin (), reliable results on the effect of climate on survival and breeding based on unbanded birds but instead marked by subcutaneous electronic tags. We show that warm events negatively affect both breeding success and adult survival of this seabird. However, the observed effect is complex because it affects penguins at several spatio/temporal levels. Breeding reveals an immediate response to forcing during warm phases of El Niño Southern Oscillation affecting food availability close to the colony. Conversely, adult survival decreases with a remote sea-surface temperature forcing (i.e., a 2-year lag warming taking place at the northern boundary of pack ice, their winter foraging place). We suggest that this time lag may be explained by the delay between the recruitment and abundance of their prey, adjusted to the particular 1-year breeding cycle of the king penguin. The derived population dynamic model suggests a 9% decline in adult survival for a 0.26°C warming. Our findings suggest that king penguin populations are at heavy extinction risk under the current global warming predictions. |
| Programme |
109;137 |
| Campaign |
|
| 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 |
0027-8424 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
10.1073/pnas.0712031105 |
Approved |
yes |
| Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5573 |
| Permanent link to this record |
