Project Funding: 2008 - 2011

NRA: 2007 NASA: Carbon Cycle Science   

Funded by NASA

Abstract:
The Total Carbon Column Observing Network (TCCON - www.tccon.caltech.edu) is a group of ground-based solar spectrometers that provide measurements of the atmospheric mass of CO2. The establishment of this network has been made possible with support from the Terrestrial Ecology program at NASA. In addition to providing validation for existing and future space-based measurements of CO2 columns (from, for example SCIAMACHY, OCO, and GOSAT), these observations provide a means to evaluate the information content of the column measurements. In our previous effort, we have shown that these observations allow improved estimates of the flux of carbon between the surface and the atmosphere to be obtained. The network currently has five stations operating with several new observation sites expected to come on-line this year. We plan to propose to use follow-on support to expand the network to provide better global coverage (adding, for example, a station in the Canadian arctic) and to improve and extend our retrievals to include CH4, CO, N2O and other gases. We will use the observations and those provided by NOAA's Global Monitoring Division in situ network to provide estimates of the strengths of the CO2, CH4, and CO fluxes globally.

2015 NASA Carbon Cycle & Ecosystems Joint Science Workshop Poster(s)

• Using Atmospheric Column Measurements to Estimate the Impact of Climate Variables on CO2 Uptake by the Biosphere   --   (Debra Wunch, Paul Wennberg, William Simpson, Geoffrey C. Toon, Nick Parazoo, Arlyn Elizabeth Andrews, Dylan Jones, Coleen Marie Roehl, Kimberly Strong, Ray Nassar)   [abstract]

2010 NASA Terrestrial Ecology Science Team Meeting Poster(s)

• Net ecosystem exchange inferred from eddy covariance flux and total column measurements   --   (Gretchen Keppel-Aleks, Rebecca A Washenfelder, Geoffrey C Toon, Ankur R Desai, Kenneth J Davis, Paul O Wennberg)   [abstract]
• The Total Carbon Column Observing Network (TCCON)   --   (Coleen M. Roehl, Gretchen Keppel-Aleks, Debra Wunch, Geoffrey C. Toon, Jean-François L. Blavier, Rebecca Washenfelder, Justus Notholt, Brian Connor, Vanessa Sherlock, David Griffith, Paul O. Wennberg)   [abstract]   [poster]

2008 NASA Carbon Cycle & Ecosystems Joint Science Workshop Posters

• Total Column Carbon Observing Network: CO2 Variability and Implications for Global Modeling   --   (Gretchen Keppel-Aleks, Paul O. Wennberg, Geoffrey C. Toon)   [abstract]

More details may be found in the following project profile(s):

• NASA Terrestrial Ecology (TE) Project Profile