J
Jean-Marc Barnola
Researcher at University of Grenoble
Publications - 11
Citations - 1347
Jean-Marc Barnola is an academic researcher from University of Grenoble. The author has contributed to research in topics: Dome (geology) & Ice core. The author has an hindex of 6, co-authored 11 publications receiving 1287 citations. Previous affiliations of Jean-Marc Barnola include Natural Environment Research Council.
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Journal ArticleDOI
Natural and anthropogenic changes in atmospheric CO2 over the last 1000 years from air in Antarctic ice and firn
David Etheridge,L. P. Steele,Ray L. Langenfelds,Roger J. Francey,Jean-Marc Barnola,Vin Morgan +5 more
TL;DR: In this paper, the effects of diffusion in the firn on the CO2 mixing ratio and age of the ice core air were determined by analyzing air sampled from the surface down to the bubble close-off depth.
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Age scale of the air in the summit ice: Implication for glacial-interglacial temperature change
TL;DR: In this article, the authors used a dynamic firn densification model to calculate the firn-ice transition depth and the age of the ice at this depth and an air diffusion model to determine the air at the transition.
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Atmospheric trends and radiative forcings of CF4 and C2F6 inferred from firn air.
David R. Worton,William T. Sturges,L. K. Gohar,Keith P. Shine,Patricia Martinerie,David E. Oram,Stephen Humphrey,Paul Begley,Laura Gunn,Jean-Marc Barnola,Jakob Schwander,Robert Mulvaney +11 more
TL;DR: The reconstructed atmospheric trends show that the mixing ratios of both CF4 and C2F6 have increased during the 20th century by factors of approximately 2 and approximately 10, respectively, and, if the current trends continue, they will continue to increase since both gases have essentially infinite lifetimes.
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Comment on ¿Greenland-Antarctic phase relations and millennial time-scale climate fluctuations in the Greenland ice-cores¿ by C. Wunsch
Jeffrey P. Severinghaus,Jean Jouzel,Nicolas Caillon,Thomas F. Stocker,Christof Huber,Markus Leuenberger,Richard B. Alley,Jérôme Chappellaz,Jean-Marc Barnola,Edward J. Brook +9 more