- add parameters to extrapolate temp from level 1 & 2 up to surface ; - comment out derivation of downward flux from net flux (was not used).
- add parameters to extrapolate temp from level 1 & 2 up to surface ;
- comment out derivation of downward flux from net flux (was not used).

altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h