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An atmospheric perspective on North American carbon dioxide exchange: CarbonTracker.
Peters W, Jacobson AR, Sweeney C, Andrews AE, Conway TJ, Masarie K, Miller JB, Bruhwiler LM, Pétron G, Hirsch AI, Worthy DE, van der Werf GR, Randerson JT, Wennberg PO, Krol MC, Tans PP. Peters W, et al. Among authors: worthy de. Proc Natl Acad Sci U S A. 2007 Nov 27;104(48):18925-30. doi: 10.1073/pnas.0708986104. Proc Natl Acad Sci U S A. 2007. PMID: 18045791 Free PMC article.