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Details of Prof Martin WAHLEN   


Gender male
Job title Professor (GRD/CAS)
University of San Diego, Scripps Institution of Oceanography ( UCSD SIO)
9500 Gilman Drive Mail Code 0214 La Jolla 92093
Regions Sea of Azov
Tel [8] (858) 534-2230
Fax [8] (858) 534-2230
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Degree Ph.D. U. of Bern, Switzerland
Research Activities 1. Reconstruction of paleoatmospheres from ice core records in Greenland and Antarctica back to > 500,000 years covering at least 5 glacial/interglacial cycles; main emphasis is to reconstruct atmospheric CO2 and d13CO2, 2. Global biogeochemical cycles of radiatively important atmospheric trace gases; biosphere-atmosphere interactions, 3. Stable isotopes in atmospheric CO2 (d13C and d18O) to arrive at improved global carbon cycle budgets (in collaboration with C. D. Keeling). Process-oriented studies to determine the significance of 18O in atmospheric CO2, 4. Stable isotopes of Cl and Br in aerosols to determine if Cl and Br radicals are produced in the troposphere, 5. Investigations on CO2, CH4, 85Kr and N2O in the stratosphere (and their isotopic species 13C and 18O in CO2, 13C, D and 14C and CH4, 15N and 18O in N2O) to determine the troposphere/stratosphere air exchange rate. Recent experimental results on 15N and 18O in stratospheric N2O are not compatible with current assumptions on stratospheric N2O destruction.
Research Region 36, 72

Created: 2000-03-18 Last Updated: 2010-05-10 by Annelies GROEN