pyet.rad_utils.calc_rad_short

pyet.rad_utils.calc_rad_short(rs=None, lat=None, albedo=0.23, n=None, nn=None, as1=0.25, bs1=0.5)

Net shortwave radiation [MJ m-2 d-1].

Parameters:

• rs (float or pandas.Series or xarray.DataArray, optional) – incoming solar radiation [MJ m-2 d-1].

• lat (float, optional) – the site latitude [rad].

• albedo (float or pandas.Series or xarray.DataArray, optional) – surface albedo [-].

• n (pandas.Series/xarray.DataArray, optional) – actual duration of sunshine [hour].

• as1 (float, optional) – regression constant, expressing the fraction of extraterrestrial reaching the earth on overcast days (n = 0) [-].

• bs1 (float, optional) – empirical coefficient for extraterrestrial radiation [-].

• nn (float or pandas.Series or xarray.DataArray, optional) – maximum possible duration of sunshine or daylight hours [hour].

Returns:

• float or pandas.Series or xarray.DataArray, optional containing the calculated

• net shortwave radiation.

Notes

Based on equation 38 in Allen et al. (1998).