Jérôme Chappellaz, Recipient of the 2013 Science Innovation Award, named after Nicholas Shackleton
Jérôme Chappellaz is Directeur de Recherche (senior scientist) at the French National Center for Scientific Research (CNRS). He got trained at the University Joseph Fourier of Grenoble for a Master and then a PhD in Geophysics and Geochemistry. When recruited by CNRS in 1990, he became a specialist of past atmospheric composition changes over the industrial era and back to the late Quaternary, using diffusing firn air as well as air bubbles trapped in ice cores drilled in polar ice caps. Using these air archives, he and his team notably reconstructed the temporal evolution of atmospheric methane, one of the trace gases affecting the Earth radiative balance. He also used this tracer as a tool to evaluate the bipolar phasing of rapid climate changes (known as the Dansgaard/Oeschger events) characterizing the last glacial period, thus helping to constrain the dynamical processes at work in the climate system.
Pioneering isotope geochemistry on trace gases at his host laboratory (LGGE) in the mid-90s, he contributed to better understand the causes of past and recent changes of several key trace gases in the atmosphere, by reconstructing the temporal evolution of their stable isotopic ratios : methane of course, but also the other greenhouse gases carbon dioxide and nitrous oxide, as well as carbon monoxide which is a key player in atmospheric chemistry. In addition to innovating in the laboratory for pioneering some ice core analyses, Jérôme Chappellaz participated to several field expeditions in Antarctica and in the Arctic, for collecting the precious ice core and firn air samples.
His work was recently recognized at the European level with the awarding of an European Research Council advanced grant, with the aim to notably develop new geochemical tools for probing polar ice sheets.
You can find more information about Jérôme Chappellaz here.
Award Acknowledgement of Jérôme Chappellaz, when receiving the EAG Science Innovation Award at Goldschmidt2013.