||The data analysis of this recently fully operational unique Carbon Flux site, in one of the most productive regions of the US and located on the premises of a national laboratory with an excellent existing infrastructure, is presenting a genuine opportunity to refine our understanding, measurement methods, and protocols of data analysis associated with the magnitude of carbon uptake by terrestrial ecosystems. In spite of recent efforts, uncertainty in estimating carbon fluxes in terrestrial ecosystems remains high, and a refinement in our methods of determining fluxes is urgent.
The project combines experiments and modeling to provide new, near-term results ---many of them site cross-cutting--- to markedly improve our predictive capability describing the processes affecting atmospheric CO2 changes. In concert with another DOE Lab (SRNL) providing at no cost additional support for the project, the study (i) provides a more robust determination of the mechanisms regulating the exchange of CO2 with the atmosphere using a combination of powerful techniques, e.g., lidars, sodars, RASS, airborne perfluorocarbon releases, and airborne spatial/temporal flux measurements (ii) quantifies the uncertainty associated with measurements of CO2 exchange between the atmosphere and ecosystems; and (iii) models terrestrial carbon processes at scales ranging from the flux tower footprint to the regional scale using revised carbon exchange information.
Now in its second year, this flux site is in full swing and modest funds on a one-time basis ---bridge funding--- are requested 1. to continue the core flux and flux-related measurements at the new Savannah River AmeriFlux tower flux site 2. to analyze the first year of flux data and to continue the publication of scientific articles of both previous intensive field campaigns that arose from the present project and 3. to lead to completion two PhD dissertations of minority students and a double-minority post doc. Since the infrastructure was completed a year ago and that two minority graduate students and a double-minority post doc are involved in analyzing that data, support to enable one year as a bridge funding is requested for UGA and a small amount is requested for the supporting national lab (SRNL) to help with aspects of the routine measurements.