Sonia Wharton

Ph.D. Candidate, University of California Davis

Estimating landscape carbon budgets Carbon fluxes over an old-growth forest Measuring carbon exchange at the forest floor

Welcome! Sonia is a sixth-year Ph.D. student at the University of California, Davis in the Atmospheric Science Graduate Group (advisor: Dr. Kyaw Tha Paw U). Since 2002, I have conducted biospheric-atmospheric research at the Wind River Experimental Forest, Washington, USA. A large portion of my doctoral research has been dedicated to measuring the land-atmosphere exchange of carbon dioxide, water vapor and energy over a 500 year-old forest at the Wind River Canopy Crane AmeriFlux site. This site describes the on-going micrometeorlogical research at the Wind River AmeriFlux tower as well as my other Ph.D. research projects at the Wind River Experimental Forest.

The Wind River Canopy Crane is a joint venture among the University of Washington College of Forest Resources, the USFS Pacific Northwest Research Station, and the Gifford Pinchot National Forest. Mass (CO2 and H2O) and energy fluxes have been measured with the eddy covariance technique at the Wind River Canopy Crane since July 1998. We take measurements on a continuous basis -10 measurements are taken every second of every day! The Wind River Canopy Crane is part of the regional AmeriFlux network and the global FLUXNET network.

"FLUXNET is a global network of micrometeorological tower sites that use eddy covariance methods to measure the exchanges of carbon dioxide, water vapor, and energy between terrestrial ecosystem and atmosphere. At present, over 400 tower sites are operating on a long-term and continuous basis. Researchers also collect data on site vegetation, soil, hydrologic, and meteorological characteristics at the tower sites."

AmeriFlux WindRiver FluxNet