1. summary: Annual average greenhouse gas (CO2, N2O, CH4, CFC-11, CFC-12) emissions from 1870 to 2100. 2. created by: Gary Strand, strandwg@ucar.edu 3. date and time: ghg_ipcc_A1B_1870-2000_c040521.nc : 21 May 2004 4. platform: mineral.cgd.ucar.edu 5. dataset format: netCDF 6. endian: N/A 7. archival copy location(s): NCAR MSS: /STRANDWG/CCSM2/DATASETS/GGAS/ghg_ipcc_A1B_1870-2000_c040521.nc 8. creation details: ASCII values used in PCM IPCC A1B scenario runs converted to netCDF 9. derived from: IPCC SRES scenarios located at