Sector definitions are based on the IPCC Common Reporting Framework used by the UNFCCC (IPCC 1996b[1]), with large segments grouped together as follows:

 

 

1)     Electricity & Heat, including:

 

a.      Public Plants (electricity, heat, CHP) (IPCC category 1A1a)

 

b.     Autoproducers (electricity, heat, CHP) (IPCC category 1A)

 

c.      Other Energy Industries (fossil fuels (IPCC category 1A1b,c)

 

2)     Manufacturing & Construction (IPCC category 1A2)

 

3)     Transportation, including:

 

a.      Domestic Transportation (IPCC category 1A3)

 

b.      International Bunkers (IPCC category 1A3ai, 1A3di)

 

4)     Other Combustion (IPCC category 1A4)

 

5)     Land Use Change & Forestry (IPCC category 5)

 

6)     Other, including:

 

a.      Fugitive Emissions from natural gas flaring/venting (IPCC category 1B2c)

 

b.      Industrial Processes: cement (IPCC category 2A1)

 

 

The IPCC categories not listed above apply to the non-CO2 gases, and hence are not included in the Gas-CAP data.

 

 

For more detailed definitions of the above categories, see pp.15-20 of WRI CAIT: Greenhouse Gas Sources & Methods, Feb. 2008.

 


[1] IPCC. 1996.  Revised 1996 IPCC Guidelines for National Greenhouse Gas Inventories.  Understanding the Common Reporting Framework.  Available at: http://www.ipcc-nggip.iges.or.jp/public/gl/guidelin/ch1ri.pdf.