The files in the "inputs" subdirectory are as follows:

 readme.inp:
   This descriptive file, explaining sources and formats (including units) of
   input files.

 co2spl.dat:
   Atmospheric CO2 concentration record derived from a spline fit (50%
   attenuation at 23.4968, REG = 100.000) to the Mauna Loa and ice core
   records. Data are for the standard case: growth rate of 1.7 ppmv/yr for
   1990.5.
        Format (columns): time (years), CO2 (ppmv), d/dt of CO2 (ppmv/yr).
        Time intervals: 0.5 years, from 1765.0 to 1990.5.
        Source: 
          (1) Mauna Loa Observatory data -- C.D. Keeling and T.P. Whorf, 
              Scripps Institution of Oceanography, La Jolla, California, 
              U.S.A. 
          (2) ice core data -- H. Friedli, H. Lotscher, E. Moor, A. Neftel, 
              H. Oeschger, U. Siegenthaler, and B. Stauffer, University of
              Bern, Bern, Switzerland

 co2-sens.dat: 
   Atmospheric CO2 concentration record derived from three different spline
   fits to the Mauna Loa and ice core records. The first was for the standard
   case (same as given in the file "co2spl.dat"), where the CO2 concentration
   growth rate at the end of the record is 1.7 ppmv/yr. The other two spline
   fits, used for sensitivity studies, give CO2 end-of-record growth rates of
   1.6 ppmv/yr (case 2) and 1.8 ppmv/yr (case 3).  Details of these spline fits
   are provided in Appendix B of Enting et al. (1994), found in the
   subdirectory "report".
        Format (columns): time (years), CO2 for standard case (ppmv), d/dt of 
          CO2 for standard case (ppmv/yr), CO2 for case 2 (ppmv), d/dt of CO2
          for case 2 (ppmv/yr), CO2 for case 3 (ppmv), d/dt of CO2 for case 3
          (ppmv/yr).  
        Time intervals: 0.5 years, from 1765.0 to 1990.5.
        Source: 
          (1) Mauna Loa Observatory data -- C.D. Keeling and T.P. Whorf,
              Scripps Institution of Oceanography, La Jolla, California,
              U.S.A.
          (2) ice core data -- H. Friedli, H. Lotscher, E. Moor, A. Neftel, 
              H. Oeschger, U. Siegenthaler, and B. Stauffer, University of
              Bern, Bern, Switzerland

 deforest.dat:  
   Annual net CO2 emissions resulting from land-use changes. Data for 1765 to
   1850 were obtained by a linear extrapolation.
        Format (columns): time (years), annual carbon flux (gigatons of C).
        Time intervals: 1.0 years, from 1765.5 to 1990.5.
        Source: R.A. Houghton, Woods Hole Research Center, Woods Hole,
                Massachusetts, U.S.A.

 deforest.all:
   Annual net CO2 fluxes resulting from land-use changes, 1765-2100. Data are a
   combination of Houghton and the IPCC scenario designated "IS92a", modified
   to go to zero in 2100 and linearly matched to Houghton over 1990-2000. This
   input data set constituted the standard series for all stabilization
   scenarios and all scenarios with fixed percentage reductions in industrial
   emissions.
        Format (columns): time (years), annual carbon flux (gigatons of C).
        Time intervals: 1.0 years, from 1765.5 to 2100.5.
        Source: R.A. Houghton, Woods Hole Research Center, Woods Hole,
                Massachusetts, U.S.A.

 foss91.dat: 
   Fossil CO2 emissions, 1765-1989. Data for 1840 to 1860 were obtained by a
   linear extrapolation. Pre-1840 data values were set to zero.
        Format (columns): time (years), annual carbon flux (gigatons of C).
        Time intervals: 1.0 years, from 1765.5 to 1989.5.
        Source:
          (1) Data for 1860 to 1949 -- C.D. Keeling, Scripps Institution of
              Oceanography, La Jolla, California, U.S.A.
          (2) Data for 1950 on -- G. Marland and T.A. Boden, Oak Ridge
              National Laboratory, Oak Ridge, Tennessee, U.S.A.

 fossil.dat:
   Updated fossil CO2 emissions, 1765-1990. Data for 1765-1984 are the same as
   those given in "foss91.dat". New values for 1985-1990 are from G. Marland.
        Format (columns): time (years), annual carbon flux (gigatons of C).
        Time intervals: 1.0 years, from 1765.5 to 1990.5.
        Source:
          (1) Data for 1860 to 1949 -- C.D. Keeling, Scripps Institution of
              Oceanography, La Jolla, California, U.S.A.
          (2) Data for 1950 on -- G. Marland and T.A. Boden, Oak Ridge
              National Laboratory, Oak Ridge, Tennessee, U.S.A.

 stab.dat 
   Prescribed CO2 concentrations for the stabilization scenarios, 1990-2300.
	Format (columns): time (years), CO2 (ppmv) for S350 scenario (CO2
	  stabilization at 350 ppm), CO2 (ppmv) for S450 scenario (CO2
	  stabilization at 450 ppm), CO2 (ppmv) for S550 scenario (CO2
	  stabilization at 550 ppm), CO2 (ppmv) for S650 scenario (CO2
	  stabilization at 650 ppm), CO2 (ppmv) for S750 scenario (CO2
	  stabilization at 750 ppm), CO2 (ppmv) for DS450 scenario (CO2
	  stabilization at 450 ppm following an initial delay in emissions
	  abatement), CO2 (ppmv) for DS550 scenario (CO2 stabilization at 550
	  ppm following an initial delay in emissions abatement).
        Time intervals: 0.5 years, from 1990.5 to 2300.5.
        Source: Intergovernmental Panel on Climate Change, Working Group 1

 c14sth.dat, c14equ.dat, c14nth.dat:
   Atmospheric carbon-14 levels for the Southern Hemisphere (extra-tropical),
   equatorial, and Northern Hemisphere (extra-tropical) regions. Values are
   expressed in the internationally adopted delta C-14 scale.
        Format (columns): time (years), delta C-14 (per mil). 
        Time intervals: 1.0 years, from 1765.5 to 1995.5.
        Source: M. Heimann, Max Planck Institute for Meteorology, Hamburg,
                Germany


The standard data format for input data files is as follows:
  Line 1: integers n, m.
  Line 2 to n+1: comments and column headers.
  Line n+2 to m+n+1: data records.