Orbital parameters for 30Ma

[010022009074@ouc_edu_cn]

Dear all:I am using CESM1.0.4 to model the climate in 30Ma, but I can't find the place to modify the orbital parameters, such as orb_eccen, orb_obliq and orb_mvlep. Is there anywhere to modify those varaities? Or which other options should I modify to change the orbital parameter to 30Ma since it is > 1Ma? Waiting for your reply sincerelyThanks!  Taily Zhang

 

[nanr]

In cesm1.0.x these parameters will be set in Buildconf/cpl.buildnml.csh. orb_iyear (int)year of orbit, used when orb_mode is fixed_year or variable_year. set by ORBITAL_YEAR in env_run.xml. default=unsetorb_eccen (r8)eccentricity of orbit, used when orb_mode is fixed_parameters. default=unsetorb_obliq (r8)obliquity of orbit in degrees, used when orb_mode is fixed_parameters. default=unsetFor further reference, the cesm1.1 model settings are here:-- http://www.cesm.ucar.edu/models/cesm1.1/cesm/doc/modelnl/nl_drv.html  

 

[010022009074@ouc_edu_cn]

     Thanks for your replying.      I still can't find vars orb_eccen, orb_mvelp and orb_obliq. On the website you gave me above, it is said "Not currently used in build-namelist". What does it mean?     Thanks!
   Taily Zhang