The script, wbw.csh, is used to run the model and name the output files. 

      Version 2.2 of LINKAGES has additional input parameters not included
      in the original LINKAGES model.

      In subroutine input the new parameters are nclimat, bareplt, lai_dynm,
      nphenol, ntparab, and egs2.  In addition, there are 7 soil parameters for each
      soil layer. 

      nclimat  - Selects the climate scenario for increasing temperature 
                 and decreasing or increasing precipitation.
      bareplt  - Option for starting from a bare plot or initializing the  
                 model with WBW plot data.
      lai_dynm - Allows for using leaf area calculated in LINKAGES in the
                 evapotranspiration equations instead of a constant.
      nphenol  - Option for using a phenonolgy routine to determine the
                 beginning of the growing season (budbreak) based on annual
                 temperatures instead of a constant input value.
      ntparab  - Controls how the temperature-response function is used to 
                 reduce tree growth.
      egs2     - Allows for the calculation of fractional dry days toward the 
                 end of the growing season since drought does not have as much 
                 effect on annual tree growth as earlier in the growing season.

      The soil parameters are:

      thick    - thickness of the soil layer
      theta_fc - soil layer field capacity
      theta_wp - soil layer wilting point
      rock     - % rock in the layer
      frac_use - fraction of usable soil
      a_ch     - coefficient in psi function 
      b_ch     - coefficient in psi function 

     In subroutine plotin, there is code to read and initialize the model
     with 1973 WBW plot data.

     In subroutine met, the climate variables, solar radiation, maximum
     temperature, minimum temperature, wind speed, and precipitation are read
     for the years 1973 - 2000. Every 28 years, the files rewind and 
     the climate repeats.  Twenty eight years before the end of a simulation,
     the model uses the data for 1973; so the climate for 2000 is always 
     used the last year of the simulation.