Index of /ftp/ndp058a

Icon  Name                    Last modified      Size  Description
[DIR] Parent Directory                             -   
[   ] ff95.dat                25-Feb-1998 11:48  1.4M  
[   ] ff95.sas                25-Feb-1998 11:48  703   
[IMG] lat95.gif               25-Feb-1998 11:48   12K  
[TXT] ndp058a.doc             23-Jun-2003 14:24   32K  
[   ] ndp058a.met             07-Aug-2001 12:27  1.0K  
[TXT] ndp058a.txt             23-Jun-2003 14:24   32K  
[TXT] ndp058a.xml             02-Sep-2003 16:06  2.5K  
[TXT] readff95.f              25-Feb-1998 11:49  808   

The documentation file for NDP-058a: Carbon Dioxide Emission Estimates from 
Fossil-Fuel Burning, Hydraulic Cement Production, and Gas Flaring for 1995 on 
a One Degree Grid Cell Basis, is ndp058a.txt.


NDP-058A (2-1998)

Carbon Dioxide Emission Estimates from Fossil-Fuel Burning,
Hydraulic Cement Production, and Gas Flaring for 1995 on a 
One Degree Grid Cell Basis.

PREPARED BY:	Antoinette L. Brenkert
                Carbon Dioxide Information Analysis Center

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 
NDP-058 (which includes estimates for 1950, 1960, 1970, 1980, and 1990), 
national emission estimates from the 1995 United Nations Energy 
Statistics Database (U.N., 1997), hydraulic cement production estimates
from the U.S. Department of Interior's Bureau of Mines (USDO, 
1995), and supplemental data on gas flaring from the U.S. 
Department of Energy's Energy Information Administration were processed
by Marland et al. (1997) following the methods of Marland and Rotty 
(1984). 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 NDP058 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 data base 
developed by Li (1996a) and documented by CDIAC (DB1016: Li, 1996) was used 
as proxy.  Previously, Andres et al. (1996) had used a 1984 human population 
data set (Goddard Institute of Space Studies, Lerner et al., 1988) as proxy 
for gridding the 1950 through 1990 emission estimates within countries.
The structure of the gridded 1995 emission data file differs, 
consequently, from the 1950-1990 gridded emission files (CDIAC: 
NDP-058) in that individual grid cells may have been partitioned 
into more than one country analogous to Li's population data base.  
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 United Nations identification code.  The percentages 
and United Nations identification codes were used to allocate the 
national CO2 emissions estimates to the grid cells.  Only those grid 
cells with a United Nations identification code, population estimate 
and carbon emission estimate are listed in the data file.  Grid cells 
representing more than one country are repeated for each country 
represented.  Note that to calculate national estimates from the data 
file, one has to sum by United Nations identification code.  To 
calculate emissions for each grid cell or by latitude one has to sum 
by grid cell (latitude and longitude), or by latitude, respectively.
A number of manipulations of Li's population data base were necessary 
(and documented) to properly distribute the national 1995 CO2 emission 
estimates over each country's grid cells.