Dear all, Andres et al. have submitted a similar paper as ours to Biogeochemical Discussions. Please keep this in mind when you work on our manuscript. Try to reduce overlap. Andres, R. J., Boden, T. A., Bréon, F.-M., Ciais, P., Davis, S., Erickson, D., Gregg, J. S., Jacobson, A., Marland, G., Miller, J., Oda, T., Olivier, J. G. J., Raupach, M. R., Rayner, P., and Treanton, K.: A synthesis of carbon dioxide emissions from fossil-fuel combustion, Biogeosciences Discuss., 9, 1299-1376, doi:10.5194/bgd-9-1299-2012, 2012. http://www.biogeosciences-discuss.net/9/1299/2012/bgd-9-1299-2012.html This synthesis discusses the emissions of carbon dioxide from fossil-fuel combustion and cement production. While much is known about these emissions, there is still much that is unknown about the details surrounding these emissions. This synthesis explores our knowledge of these emissions in terms of why there is concern about them; how they are calculated; the major global efforts on inventorying them; their global, regional, and national totals at different spatial and temporal scales; how they are distributed on global grids (i.e. maps); how they are transported in models; and the uncertainties associated with these different aspects of the emissions. The magnitude of emissions from the combustion of fossil fuels has been almost continuously increasing with time since fossil fuels were first used by humans. Despite events in some nations specifically designed to reduce emissions, or which have had emissions reduction as a byproduct of other events, global total emissions continue their general increase with time. Global total fossil-fuel carbon dioxide emissions are known to within 10% uncertainty (95% confidence interval). Uncertainty on individual national total fossil-fuel carbon dioxide emissions range from a few percent to more than 50%. The information discussed in this manuscript synthesizes global, regional and national fossil-fuel carbon dioxide emissions, their distributions, their transport, and the associated uncertainties. Regards, Martin ------------------| http://sci.martinkoechy.de |-------------------- Dr. Martin Köchy (Koechy) Johann Heinrich von Thünen-Institut -Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei- Institut für Agrarrelevante Klimaforschung Johann Heinrich von Thuenen Institute -Federal Research Institute for Rural Areas, Forestry and Fisheries- Institute of Agricultural Climate Research vTI-AK * Bundesallee 50 * 38116 Braunschweig * GERMANY Telefon: +49-531-596-2640 * Telefax: +49-531-596-2699 http://www.vti.bund.de/de/startseite/institute/ak.html skype: martinkoechy --------------------------- & ------------------------------- AG Vegetationsökologie & Naturschutz|RG Veg. Ecology & Nature Conserv. Universität Potsdam | University of Potsdam Am Neuen Palais 10 * 14469 Potsdam * GERMANY www.bio.uni-potsdam.de/professuren/vegetationsoekologie-naturschutz