slv.meteorology.vhd.load_vhd# slv.meteorology.vhd.load_vhd(time_range=None)[source]# Valley heat deficit in MJ m-2, indexed by Time_UTC at the sounding times. The stored column is in J m-2; it is converted here so the units match how the quantity is reported (Whiteman et al. 2014 uses MJ m-2). Return type: Series