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Rechercher

OSUG - Terre Univers Environnement

Joel Savarino

ResearcherID H-9730-2012

Professional Experiences :

  • 2013-present. Senior Scientist (Directeur de Recherche), CNRS, Glaciology Laboratory, Grenoble, France
  • 2002-2013. Research Scientist (Chargé de Recherche), CNRS, Glaciology Laboratory, Grenoble, France
  • 1996-2002. Research Associate, Dept. Chemistry & Biochemistry, U. California, San Diego, USA

Education :

2009 Habilitation à Diriger des Recherches
1996 Ph.D. Glaciology, Grenoble-Alpes University
1992 M. Sc. Geophysics, Grenoble-Alpes University

Current and Recent Responsabilities :

Since 2016 Co-editor, The Cryosphere, EGU publication
since-2015 Member elected, Laboratory board
Since 2015 Co-management of Geochemistry Workshop series
Since 2014 Co-editor, ELEMENTA : Science of the Anthropocene
Since 2013 Review Panel, Marie Sklodowska Curie Fellowship, European Commission
Since 2004 Field project coordinator, Antarctica (12 campaigns)
2014-2015 Member review committee panel LabEx OSUG@2020
Since 2004 Advisor 10 PhDs, 6 undergraduates

Research Interests :

Polar Chemistry : Contrary to the common sense, the snow pack is far from being a passive and nonreactive medium. It is in fact a true reactive chemical reactor. Under the influence of sun light, snow chromophore are decomposed into very reactive species, triggering a succession of radical-molecule chain reaction that profoundly modified the chemical state of the polar atmosphere. For more than two decades, we are exploring the consequences that the photo-chemical denitrification of the snow has on :

  • the halogen-NOx interaction
  • the ozone budget
  • the archiving of the atmospheric signal in the ice cores.

Stable Isotope Chemistry : I use the stable isotope geochemistry as a probing tool to explore the state of change of the matter. Because mass is the main factor differentiating isotopes of the same element, the distribution of the stable isotopes in the matter scales with the mass. Mass-dependent fractionation processes are the dominant way of changing the isotope partition in Nature. However, a restricted set of processes are not following the mass scale and fractionate the isotopes mass-independently. Because these processes are so limited and specific, their propagation within the Earth’s chemical system can be tracked at an unprecedented level of precision. With this tool, we can track the nature of the volcanic eruptions trapped in ice cores, follow at the chemical bond level the oxidative chain propagation in the atmosphere, observe the transfer of the matter between the atmosphere, the cryosphere, the hydrosphere and the biosphere.

Analytical Chemistry : We are constantly developing new instrumentation, isotope protocols and laboratory experiments to solve our scientific questions. Vacuum technology, mass spectrometry, gas and liquid chromatography, SPE and continuous flow analysis are commonly used in our laboratory. We are specialized in measuring the stable isotopes of sulfur, nitrogen, oxygen and carbon.

Most Recent Publications

full list

  • Gautier, E., Savarino, J., Erbland, J., Lanciki, A., and Possenti, P. : Variability of sulfate signal in ice core records based on five replicate cores, Clim. Past, 12, 103-113, 10.5194/cp-12-103-2016, 2016.
  • Savarino, J., Vicars, W. C., Legrand, M., Preunkert, S., Jourdain, B., Frey, M. M., Kukui, A., Caillon, N., and Gil Roca, J. : Oxygen isotope mass balance of atmospheric nitrate at Dome C, East Antarctica, during the OPALE campaign, Atmos. Chem. Phys. Discuss., 15, 24041-24083, 10.5194/acpd-15-24041-2015, 2015.
  • Frey, M. M., Roscoe, H. K., Kukui, A., Savarino, J., France, J. L., King, M. D., Legrand, M., and Preunkert, S. : Atmospheric nitrogen oxides (NO and NO2) at Dome C, East Antarctica, during the OPALE campaign, Atmos. Chem. Phys., 15, 7859-7875, 10.5194/acp-15-7859-2015, 2015.
  • Erbland, J., Savarino, J., Morin, S., France, J. L., Frey, M. M., and King, M. D. : Air–snow transfer of nitrate on the East Antarctic Plateau – Part 2 : An isotopic model for the interpretation of deep ice-core records, Atmos. Chem. Phys., 15, 12079-12113, 10.5194/acp-15-12079-2015, 2015.
  • Erbland, J., Savarino, J., Morin, S., France, J. L., Frey, M. M., and King, M. D. : Air–snow transfer of nitrate on the East Antarctic plateau – Part 2 : An isotopic model for the interpretation of deep ice-core records, Atmos. Chem. Phys. Discuss., 15, 6887-6966, 10.5194/acpd-15-6887-2015, 2015.
  • Berhanu, T. A., Savarino, J., Erbland, J., Vicars, W. C., Preunkert, S., Martins, J. F., and Johnson, M. S. : Isotopic effects of nitrate photochemistry in snow : a field study at Dome C, Antarctica, Atmos. Chem. Phys., 15, 11243-11256, 10.5194/acp-15-11243-2015, 2015.
  • Vicars, W. C., and Savarino, J. : Quantitative constraints on the 17O-excess (Δ17O) signature of surface ozone : Ambient measurements from 50°N to 50°S using the nitrite-coated filter technique, Geochim Cosmochim Acta, 135, 270-287, 10.1016/j.gca.2014.03.023, 2014.
  • Shaheen, R., Abauanza, M., Jackson, T., Savarino, J., and Thiemens, H. M. : Large sulfur isotope anomaly in nonvolcanic sulfate aerosol and its implications for the Archean atmosphere, Proceeding of the National Academy of Sciences, 111, 11979-11983, 10.1073/pnas.1406315111, 2014.
  • Meusinger, C., Berhanu, T. A., Erbland, J., Savarino, J., and Johnson, M. S. : Laboratory study of nitrate photolysis in Antarctic snow. I. Observed quantum yield, domain of photolysis, and secondary chemistry, The Journal of Chemical Physics, 140, 244305, 10.1063/1.4882898, 2014.
  • Legrand, M., Preunkert, S., Frey, M., Bartels-Rausch, T., Kukui, A., King, M. D., Savarino, J., Kerbrat, M., and Jourdain, B. : Large mixing ratios of atmospheric nitrous acid (HONO) at Concordia (East Antarctic Plateau) in summer : a strong source from surface snow ?, Atmos. Chem. Phys., 14, 9963-9976, 10.5194/acp-14-9963-2014, 2014.
  • Geng, L., Cole-Dai, J., Alexander, B., Erbland, J., Savarino, J., Schauer, A. J., Steig, E. J., Lin, P., Fu, Q., and Zatko, M. C. : On the origin of the occasional spring nitrate peak in Greenland snow, Atmos Chem Phys, 14, 13361-13376, 10.5194/acp-14-13361-2014, 2014.
  • Geng, L., Alexander, B., Cole-Dai, J., Steig, E. J., Savarino, J., Sofen, E. D., and Schauer, A. J. : Nitrogen isotopes in ice core nitrate linked to anthropogenic atmospheric acidity change, Proceedings of the National Academy of Sciences, 10.1073/pnas.1319441111, 2014.
  • Gallet, J. C., Domine, F., Savarino, J., Dumont, M., and Brun, E. : The growth of sublimation crystals and surface hoar on the Antarctic plateau, The Cryosphere, 8, 1205-1215, 10.5194/tc-8-1205-2014, 2014.
  • Dietzel, M., Leis, A., Abdalla, R., Savarino, J., Morin, S., Böttcher, M. E., and Köhler, S. : 17O excess traces atmospheric nitrate in paleo-groundwater of the Saharan desert, Biogeosciences, 11, 3149-3161, 10.5194/bg-11-3149-2014, 2014.
  • Cole-Dai, J., Savarino, J., Thiemens, M. H., and Lanciki, A. : Comment on "Climatic impact of the long-lasting Laki eruption : Inapplicability of mass-independent sulfur isotope composition measurements" by Schmidt et al, J Geophys Res, 119, 6629-6635, 10.1002/2013jd019869, 2014.
  • Bhattacharya, S. K., Savarino, J., Michalski, G., and Liang, M.-C. : A new feature in the internal heavy isotope distribution in ozone, The Journal of Chemical Physics, 141, 10.1063/1.4895614, 2014.
  • Berhanu, T. A., Meusinger, C., Erbland, J., Jost, R., Bhattacharya, S. K., Johnson, M. S., and Savarino, J. : Laboratory study of nitrate photolysis in Antarctic snow. II. Isotopic effects and wavelength dependence, The Journal of Chemical Physics, 140, 244305, 10.1063/1.4882899, 2014.
  • Vicars, W. C., Morin, S., Savarino, J., Wagner, N. L., Erbland, J., Vince, E., Martins, J. M. F., Lerner, B. M., Quinn, P. K., Coffman, D. J., Williams, E. J., and Brown, S. S. : Spatial and diurnal variability in reactive nitrogen oxide chemistry as reflected in the isotopic composition of atmospheric nitrate : Results from the CalNex 2010 field study, Journal of Geophysical Research : Atmospheres, 118, 10567-10588, 10.1002/jgrd.50680, 2013.
  • Shaheen, R., Abauanza, M., Jackson, T. L., McCabe, J., Savarino, J., and Thiemens, M. H. : Tales of volcanoes and El-Niño southern oscillations with the oxygen isotope anomaly of sulfate aerosol, Proceedings of the National Academy of Sciences, 10.1073/pnas.1213149110, 2013.
  • Savarino, J., Morin, S., Erbland, J., Grannec, F., Patey, M. D., Vicars, W., Alexander, B., and Achterberg, E. P. : Isotopic composition of atmospheric nitrate in a tropical marine boundary layer, Proceedings of the National Academy of Sciences, 110, 17668-17673, 10.1073/pnas.1216639110, 2013.
  • Saccon, P., Leis, A., Marca, A., Kaiser, J., Campisi, L., Böttcher, M. E., Savarino, J., Escher, P., Eisenhauer, A., and Erbland, J. : Determination of Nitrate Pollution Sources in the Marano Lagoon (Italy) by using a Combined Approach of Hydrochemical and Isotopic Techniques, Procedia Earth and Planetary Science, 7, 758-761, 10.1016/j.proeps.2013.03.019, 2013.
  • Saccon, P., Leis, A., Marca, A., Kaiser, J., Campisi, L., Böttcher, M. E., Savarino, J., Escher, P., Eisenhauer, A., and Erbland, J. : Multi-isotope approach for the identification and characterisation of nitrate pollution sources in the Marano lagoon (Italy) and parts of its catchment area, Applied Geochemistry, 34, 75-89, 10.1016/j.apgeochem.2013.02.007, 2013.
  • Hill-Falkenthal, J., Priyadarshi, A., Savarino, J., and Thiemens, M. : Seasonal variations in 35S and Δ17O of sulfate aerosols on the Antarctic plateau, Journal of Geophysical Research : Atmospheres, 118, 1-12, 10.1002/jgrd.50716, 2013.
  • Geng, L., Schauer, A. J., Kunasek, S. A., Sofen, E. D., Erbland, J., Savarino, J., Allman, D. J., Sletten, R. S., and Alexander, B. : Analysis of oxygen-17 excess of nitrate and sulfate at sub-micromole levels using the pyrolysis method, Rapid Communications in Mass Spectrometry, 27, 2411-2419, 10.1002/rcm.6703, 2013.
  • Frey, M. M., Brough, N., France, J. L., Anderson, P. S., Traulle, O., King, M. D., Jones, A. E., Wolff, E. W., and Savarino, J. : The diurnal variability of atmospheric nitrogen oxides (NO and NO2) above the Antarctic Plateau driven by atmospheric stability and snow emissions, Atmos. Chem. Phys., 13, 3045-3062, 10.5194/acp-13-3045-2013, 2013.
  • Erbland, J., Vicars, W. C., Savarino, J., Morin, S., Frey, M. M., Frosini, D., Vince, E., and Martins, J. M. F. : Air-snow transfer of nitrate on the East Antarctic Plateau - Part 1 : Isotopic evidence for a photolytically driven dynamic equilibrium in summer, Atmos. Chem. Phys., 13, 6403-6419, 10.5194/acp-13-6403-2013, 2013.
  • Cole-Dai, J., Ferris, D. G., Lanciki, A., Savarino, J., Thiemens, H. M., and McConnell, J. R. : Two likely stratospheric volcanic eruptions in the 1450s C.E. found in a bipolar, subannually dated 800 year ice core record, Journal of Geophysical Research : Atmospheres, 118, 1-8, 10.1002/jgrd.50587, 2013.
  • Vicars, W. C., Bhattacharya, S. K., Erbland, J., and Savarino, J. : Measurement of the 17O-excess (Δ17O) of tropospheric ozone using a nitrite-coated filter, Rapid Communications in Mass Spectrometry, 26, 1219-1231, 10.1002/rcm.6218, 2012.
  • Schauer, A. J., Kunasek, S. A., Sofen, E. D., Erbland, J., Savarino, J., Johnson, B. W., Amos, H. M., Shaheen, R., Abaunza, M., Jackson, T. L., Thiemens, M. H., and Alexander, B. : Oxygen isotope exchange with quartz during pyrolysis of silver sulfate and silver nitrate, Rapid Communications in Mass Spectrometry, 26, 2151-2157, 10.1002/rcm.6332, 2012.
  • Morin, S., Erbland, J., Savarino, J., Domine, F., Bock, J., Friess, U., Jacobi, H. W., Sihler, H., and Martins, J. M. F. : An isotopic view on the connection between photolytic emissions of NOx from the Arctic snowpack and its oxidation by reactive halogens, J Geophys Res, 117, D00R08, 10.1029/2011jd016618, 2012.
  • Lanciki, A., Cole-Dai, J., Thiemens, M. H., and Savarino, J. : Sulfur isotope evidence of little or no stratospheric impact by the 1783 Laki volcanic eruption, Geophys Res Lett, 39, L01806, 10.1029/2011GL050075, 2012.
  • Darrouzet-Nardi, A., Erbland, J., Bowman, W., Savarino, J., and Williams, M. : Landscape-level nitrogen import and export in an ecosystem with complex terrain, Colorado Front Range, Biogeochemistry, 109, 271-285, 10.1007/s10533-011-9625-8, 2012.
  • Priyadarshi, A., Dominguez, G., Savarino, J., and Thiemens, M. : Cosmogenic 35S : A unique tracer to Antarctic atmospheric chemistry and the polar vortex, Geophys. Res. Lett., 38, L13808, 10.1029/2011gl047469, 2011.
  • Morin, S., Sander, R., and Savarino, J. : Simulation of the diurnal variations of the oxygen isotope anomaly (∆17O) of reactive atmospheric species, Atmos. Chem. Phys., 11, 3653-3671, 10.5194/acp-11-3653-2011, 2011.
  • Gallet, J. C., Domine, F., Arnaud, L., Picard, G., and Savarino, J. : Vertical profile of the specific surface area and density of the snow at Dome C and on a transect to Dumont D’Urville, Antarctica - albedo calculations and comparison to remote sensing products, The Cryosphere, 5, 631-649, 10.5194/tc-5-631-2011, 2011.
  • France, J. L., King, M. D., Frey, M. M., Erbland, J., Picard, G., Preunkert, S., MacArthur, A., and Savarino, J. : Snow optical properties at Dome C (Concordia), Antarctica ; implications for snow emissions and snow chemistry of reactive nitrogen, Atmos. Chem. Phys., 11, 9787-9801, 10.5194/acp-11-9787-2011, 2011.

Joel Savarino

ResearcherID H-9730-2012 Professional Experiences : 2013-present. Senior Scientist (Directeur de Recherche), CNRS, Glaciology Laboratory, Grenoble, France 2002-2013. Research Scientist (Chargé de Recherche), CNRS, Glaciology Laboratory, Grenoble, France 1996-2002. Research Associate, Dept. Chemistry & Biochemistry, U. California, San Diego, USA Education : 2009 (...)

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