VARIABLES:

Temperature of snow/firn as a function of time and depth (K):
T_Calonne 
T_Sturm
T_Obs

Coordinates:
X - time (years)
Y - depth (m) 

Model forcing:
dlw - downward longwave radiation flux (W/m^2)
dsw - downward shortwave radiation flux (W/^2)
time_forcing - timestep for model forcing (years)