NAME
          getco2 - get atmospheric CO2 concentration

     SYNOPSIS
          #include "lpj.h"

          Real getco2(const Climate *climate,int  year);


     DESCRIPTION
          Function gets atmospheric CO2 concentration  for specified
          year.  The arguments of getco2 are:

          climate
               Pointer to climate data. Must be initialized by
               initclimate().

          year year CO2 data is read.

     RETURN VALUE
          Atmospheric CO2 concentration (ppmv) is returned.


     AUTHORS
          For authors and contributors see AUTHORS file


     COPYRIGHT
          (C) Potsdam Institute for Climate Impact Research (PIK), see
          COPYRIGHT file


     SEE ALSO
          initclimate(3), freeclimate(3), getclimate(3)