Release Version These are the CarbonTracker 2008 estimates, released on 31 October, 2008. All flux estimates and CO2 mole fractions have been revised since the CT2007B release. Any use of these data should make clear note of the release version in addition to the requested acknowledgement (below). Usage Policy CarbonTracker is an open product of the NOAA Earth System Research Laboratory using data from the Global Monitoring Division greenhouse gas observational network and collaborating institutions. Model results including figures and tabular material found on the CarbonTracker website may be used for non-commercial purposes without restriction, but we request that the following acknowledgement text be included in documents or publications made using CarbonTracker results: CarbonTracker results provided by NOAA/ESRL, Boulder, Colorado, USA, http://carbontracker.noaa.gov Since we expect to continuously update the CarbonTracker product, it is important to identify which version you are using. To provide accurate citation, please include the version of the CarbonTracker release in any use of these results. The CarbonTracker team welcomes special requests for data products not offered by default on this website, and encourages proposals for collaborative activities. Contact us at carbontracker.team@noaa.gov. Suggested Acknowledgment "CarbonTracker 2008 results provided by NOAA ESRL, Boulder, Colorado, USA from the website at http://carbontracker.noaa.gov." Suggested Website Citation "CarbonTracker 2008, http://carbontracker.noaa.gov" Suggested Journal Citation Peters et al, 2007, "An atmospheric perspective on North American carbon dioxide exchange: CarbonTracker", PNAS, November 27, 2007 , vol. 104, no. 48, 18925-18930