Fig. 1. Schematic diagrams of basic observation equipments for hyperspectral radiation observation system. (a) Sky radiometer; (b) direct solar radiometer; (c) ground-reflected radiometer

Fig. 2. Solar ultraviolet spectral irradiance curves

Fig. 3. Integrated area of single solar ultraviolet spectral irradiance curve

Fig. 4. Comparison between the integrated ultraviolet calculation values from the spectral radiometer and the data from UVA+UVB waveband ultraviolet radiation sensor on different dates

Fig. 5. UVR statistical comparison between spectrally integrated radiation and conventional sensors. (a) Scatter diagram; (b) histogram

Fig. 6. Comparison between the integrated PAR calculation values from the spectral radiometer and the data from PAR sensor on different dates

Fig. 7. PAR statistical comparison between spectrally integrated radiation and conventional sensors. (a) Scatter diagram; (b) histogram

Fig. 8. Comparison of data from total radiation sensor with the integral total radiation values from the spectral radiometer on different dates

Fig. 9. GHI statistical comparison between spectrally integrated radiation and conventional sensors. (a) Scatter diagram; (b) histogram

Fig. 10. Comparison of data from the direct radiation sensor with the integral direct radiation values from the spectral radiometer on different dates

Fig. 11. DNI statistical comparison between spectrally integrated radiation and conventional sensors. (a) Scatter diagram; (b) histogram

Fig. 12. Comparison of daily variation curves between radiation meter and integration of spectrum under clear-sky conditions on October 31, 2019. (a) Total radiation; (b) direct radiation; (c) photosynthetically active radiation; (d) ultraviolet radiation

Fig. 13. Comparison of continuous spectral irradiance at 12:00 on August 7, 2019

Fig. 14. GHI statistical comparison between self-developed spectral radiometer and EKO spectral radiometer. (a) Scatter diagram; (b) histogram