Antoinette Brenkert, CDIAC
NDP-058A (1998)
This data package presents the gridded (one-degree latitude by one-degree longitude) summed emissions from fossil-fuel burning, hydraulic cement production, and gas flaring for 1995. Analogous to the data presented in the numeric data package NDP-058 (which includes estimates for 1950, 1960, 1970, 1980, and 1990), national emission estimates from the 1995 United Nations (UN) Energy Statistics Database, hydraulic cement production estimates from the U.S. Department of the Interior's Bureau of Mines, and supplemental data on gas flaring from the U.S. Department of Energy's Energy Information Administration were processed by Marland et al. following the methods of Marland and Rotty. The only change in the methodology used to calculate the national CO2 emission estimates for 1995 was the implementation of separate carbon coefficients for soft and hard coal; the emissions estimates in NDP-058 were calculated using a single carbon coefficient to characterize the carbon content of all coals. To distribute the national emission estimates from 1995 within each country, the population database developed by Li (documented in CDIAC database DB1016) was used as proxy. The structure of the gridded 1995 emissions data file differs, consequently, from the 1950-1990 gridded emission files in that individual grid cells may have been partitioned into more than one country analogous to Li's population database. A country's representation in a grid cell is quantified by the percentage of that country's land area in a particular grid cell and identified by its UN identification code. The percentages and UN identification codes were used to allocate the national CO2 emission estimates to the grid cells. Only those grid cells with a UN identification code, population estimate, and carbon emission estimate are listed. Grid cells representing more than one country are repeated for each country represented. A number of manipulations of Li's population database were necessary (and documented) to properly distribute the national 1995 CO2 emission estimates over each country's grid cells. WDC-A database
kng 01/99