Todd Sowers 
EESI Associate
Todd Sowers
Ph.D., Oceanography, University of Rhode Island, 1991
Contact Information:
Department of Geosciences
237 Deike Building
University Park, PA 16802
Phone: (814) 863-8093
email: sowers@geosc.psu.edu
Dept. website: http://www.geosc.psu.edu/~sowers/
Current Research Interests:
Global biogeochemical cycles involving trace gas species.
Specifically interested in the relation between climate and greenhouse gas emissions over the last millennia as well as glacial/interglacial timescales.
Microbiology of biota living in ice sheets
Selected Publications:
Sowers, T. A., R. Alley, and J. Jubenville, Elemental and isotopic records of atmospheric nitrous oxide covering the last 106,000 years from the GISP II and Taylor Dome ice cores, Science,Vol 301, pg 945-948, 2003.
Campen, R.K., T. Sowers, and R.B. Alley, Evidence of Microbial Consortia Metabolizing Within a Low-Latitude Mountain Glacier, Geology, 31 (No. 3), 231-234, 2003.
Sowers, T., A. Rodebaugh, N. Yoshida and S. Toyoda, Extending records of the isotopic composition of atmospheric N 2O back to 1800 A. D. from air trapped in snow at South Pole and the GISP II ice core, Global Biogeochemical Cycles, Vol. 16, NO.4, 1129, doi:10.1029/2002GB001911, 2002.
Sowers, T. A., The N 2O record spanning the penultimate deglaciation from the Vostok ice core, Journal of Geophysical Research , Vol 106, D23, pg 31,903-31,914, 2001
Sowers, T.A., and J. Jubenville, A modified extraction technique for liberating occluded gases in ice cores, Journal of Geophysical Research, Vol 105, D23, pg 29,155-29,164, 2000.
Severinghaus, J. P., T. A. Sowers, E. J. Brook, R. B. Alley and M. L. Bender, Timing of abrupt climate change at the end of the Younger Dryas interval from thermally fractionated gases in polar ice, Nature, 391, 141-146, 1998.
Brook, E., T. Sowers and J. Orchardo, Rapid variations in atmospheric methane concentration during the past 110,000 years, Science, 273, 1087-1091, 1996
Sowers, T. and M. Bender, Climate records covering the last deglaciation, Science269, 210-214, 1995.
Sowers, T., M. Bender, L. Labeyrie, D. Martinson, J. Jouzel, D. Raynaud, and Y. S. Korotkevich, 135,000 Year Vostok-SPECMAP Common Temporal Framework, Paleoceanography , 6. 867-875, 1993.
Sowers, T., M. Bender, D. Raynaud, Y. S. Korotkevich, and J. Orchardo, The d 18O of atmospheric O 2 from air inclusions in the Vostok ice core: Timing of CO 2 and ice volume changes during the penultimate deglaciation, Paleoceanography, 6, 679-696, 1991.