Carl is a Research Soil Scientist with the USGS Colorado Water Science Center.
My research examines the geochemical interactions between water, rock, and soil in both natural and human-managed systems. I specialize in using isotopes and geochemical tracers to answer questions of both basic and applied research. Areas of focus in my recent work include:
- Using tritium to trace the ages of surface waters and water availability in the Upper Colorado River Basin as part of the USGS Next Generation Water Observing System (NGWOS)
- Salinity in surface waters and soils of the semiarid western U.S.
- Contaminants of concern like PFAS and selenium
- Water and soil effects from uranium mining
2016-present Research Soil Scientist, USGS Colorado Water Science Center
2010-2016 Research Soil Scientist, USGS Crustal Geophysics and Geochemistry Science Center
2008-2010 Mendenhall Fellow, USGS Crustal Geophysics and Geochemistry Science Center
2006-2008 Post-doctoral researcher, University of California, Santa Barbara
Education and Certifications
Ph.D. University of Colorado, Boulder, Colorado, Ecology and Biogeochemistry
B.S. Virginia Tech, Blacksburg, Virginia, Biology