bsrn.qc.diff_ratio.k_low_sza_test

bsrn.qc.diff_ratio.k_low_sza_test(ghi, dhi, zenith)

Check diffuse fraction ($k$) for low solar zenith angles ($Z < 75^circ$) [1] [2].

Parameters:

• ghi (numeric or Series) – Global horizontal irradiance ($G_h$). [W/m^2]

• dhi (numeric or Series) – Diffuse horizontal irradiance ($D_h$). [W/m^2]

• zenith (numeric or Series) – Solar zenith angle ($Z$). [degrees]

Returns:

flags – Boolean flags (True = Pass). [bool]

Return type:

Series or ndarray

References

[1]

Forstinger, A., et al. (2021). Expert quality control of solar radiation ground data sets. In SWC 2021: ISES Solar World Congress. International Solar Energy Society.

[2]

Long, C. N., & Shi, Y. (2008). An automated quality assessment and control algorithm for surface radiation measurements. The Open Atmospheric Science Journal, 2(1), 23-37.