Response to the comment by G. Favreau, A. Guero, and J. Seidel on “Improving noble gasbased paleoclimate reconstruction and groundwater dating using 20Ne/22Ne ratios” (2003) Geochim. Cosmochim. Acta, 67, 587–600

FRANK PEETERS,* URS BEYERLE, WERNER AESCHBACH-HERTIG, MATTHIAS S. BRENNWALD, and ROLF KIPFER Environmental Physics, Limnological Institute, University of Konstanz, Mainaustrasse 252, D-78464 Konstanz, Germany Climate and Environmental Physics, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland Institute of Environmental Physics, University of Heidelberg, D-69120 Heidelberg, Germany Environmental Isotopes Group, Department of Water Resources and Drinking Water, Swiss Federal Institute of Environmental Science and Technology (EAWAG), P.O. 611, Überlandstrasse 133, CH-8600 Dübendorf, Switzerland Isotope Geology, Department of Earth Sciences, Swiss Federal Institute of Science and Technology (ETH), NO C61, CH-8092 Zurich, Switzerland