####### README ####### The Open-source Data Inventory for Anthropogenic CO2 (ODIAC), version 2019 (ODIAC2019) !!! PLEASE READ OUR DATA POLICY (http://db.cger.nies.go.jp/dataset/ODIAC/data_policy.html) !!! 1) ODIAC2019 The Open-source Data Inventory for Anthropogenic CO2 (ODIAC) is a global high-resolution fossil fuel CO2 emission (ffco2) data product (Oda and Maksyutov, 2011; Oda et al., 2018). The year 2019 version of ODIAC (ODIAC2019, 2000-2018) is based on the latest country ffco2 estimates (2000-2016) made by the new Carbon Dioxide Information Analysis Center (CDIAC) team at Appalachian State University (AppState, Gilfillan et al. 2019). The emission spatial disaggregation was done using multiple spatial proxy data, such as geographical location of point sources, satellite observations of nightlights, and aircraft and ship fleet tracks. Based on our recent study, we corrected the power plant information for Poland and Ukraine (see Oda et al. 2019). The emissions seasonality was taken from the CDIAC monthly gridded data product (Andres et al. 2011). The year 2016 CDIAC country-level estimates were projected for the recent years (2017 and 2018) using fuel consumption data reported by the latest BP statistical review of the world (BP, 2019). The ODIAC approach, methodology, and etc. are described in Oda et al. (2018) ESSD. 2) Data format and unit The ODIAC emission data product is provided in two spatial resolutions: 1x1 km and 1x1 degree. The 1x1 km ODIAC emission data files are provided in GeoTIFF format (https://trac.osgeo.org/geotiff/). Values are provided in the unit of tonne carbon/cell (monthly total). Note the 1x1 km ODIAC emission files only include emissions over land regions. Emissions from international aviation and marine bunker are NOT included. The 1x1 degree ODIAC emission data files are provided in netCDF format (https://www.unidata.ucar.edu/software/netcdf/). Values are provided in the unit of gram carbon/m2/day (monthly mean). 3) Global scaling factor We applied a global scaling factor to match the sum of country total emissions to the CDIAC global total emissions. Below is the list of the global scaling factors used in the production of ODIAC2019. See more in the section 3.1 and the table A2 in Oda et al. (2018) ESSD. Global total Year ffco2 in PgC Scaling factor ---- ------------ -------------- 2000 6.800 1.0092 2001 6.841 1.0089 2002 7.007 1.0101 2003 7.394 1.0150 2004 7.733 1.0127 2005 8.047 1.0187 2006 8.321 1.0169 2007 8.463 1.0155 2008 8.759 1.0120 2009 8.528 1.0112 2010 9.120 1.0136 2011 9.419 1.0103 2012 9.628 1.0162 2013 9.748 1.0237 2014 9.774 1.0193 2015 9.811 1.0227 2016 9.817 1.0282 2017 9.883 - 2018 10.008 - ---- ------------ -------------- 3) References Andres, R.J., Gregg, J.S., Losey, L., Marland, G. and Boden, T. 2011. Monthly, global emissions of carbon dioxide from fossil fuel consumption, Tellus, 63 (3), 309-327, https://doi.org/10.1111/j.1600-0889.2011.00530.x BP. 2018. Statistical Review of World Energy - all data, 1965-2018 (year 2019 edition), https://www.bp.com/en/global/corporate/energy-economics/statistical-review-of-world-energy/downloads.html (the last assess date: 11/29/19) Gilfillan, D., Marland, G., Boden, T. and Andres, R.J. 2019. Global, Regional, and National Fossil-Fuel CO2 Emissions: 1751-2016, Carbon Dioxide Information Analysis Center at Appalachian State University, Boone North Carolina, https://energy.appstate.edu/CDIAC. Oda, T. and Maksyutov, S. 2011. A very high-resolution (1 km x 1 km) global fossil fuel CO2 emission inventory derived using a point source database and satellite observations of nighttime lights, Atmos. Chem. Phys., 11, 543-556, https://doi.org/10.5194/acp-11-543-2011. Oda, T., Maksyutov, S., and Andres, R. J. 2018. The Open-source Data Inventory for Anthropogenic CO2, version 2016 (ODIAC2016): a global monthly fossil fuel CO2 gridded emissions data product for tracer transport simulations and surface flux inversions, Earth Syst. Sci. Data, 10, 87-107, https://doi.org/10.5194/essd-10-87-2018. Oda, T., Bun, R., Kinakh, V., Topylko, P., Halushchak, M., Marland, G., Lauvaux, T., Jonas, M., Maksyutov, S., Nahorski, Z., Lesiv, M., Danylo, O. and Horabik-Pyzel, J.: Errors and uncertainties in a gridded carbon dioxide emission inventory, Mitigation and Adaptation Strategies for Global Change, https://doi.org/10.1007/ s11027-019-09877-2 , 2019 4) Contact The ODIAC team (help at odiac.org) Dr. Shamil Maksyutov (NIES contact point) Center for Global Environmental Research, National Institute for Environmental Studies, Tsukuba, Japan. Dr. Tomohiro Oda (Project lead) Goddard Earth Science Technology and Research, Universities Space Research Association Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, MD, USA. NOTE: Data users are encouraged to report possible errors in the data product. However, we will NOT respond to requests solely for technical assistance on the data use. UPDATED ON DEC13, 2019