ice refreeze_fraction snow

snow double pism::surface::LocalMassBalance::DegreeDayFactors::snow m day^-1 K^-1; ice-equivalent amount of snow melted, per PDD Definition at line 63 of file localMassBalance.hh. Referenced by pism::surface::FaustoGrevePDDObject::degree_day_factors(), pism::surface::PDDMassBalance::step(), and pism::surface::TemperatureIndex::TemperatureIndex().