Juan Liu, Wangmu Tsoja, Gelsor Norsang, Dengdun Lagua, Guijun Hu, Qian Wang, Yi Zhou, Xi Ze. Observation of Solar Erythemal Ultraviolet Radiation on Clear Days in Tibet[J]. Acta Optica Sinica, 2020, 40(19): 1904002
- Acta Optica Sinica
- Vol. 40, Issue 19, 1904002 (2020)
Fig. 1. Extinction characteristics of sunlight in atmosphere
Fig. 2. Action spectrum of solar erythemal UV radiation
Fig. 3. Solar UV spectra observed in Lhasa at local noon for two equinoxes and two solstices
Fig. 4. Monochromatic solar erythemal ultraviolet intensity versus wavelength in Lhasa at local noon for two equinoxes and two solstices
Fig. 5. Observation devices. (a) NILU-UV solar UV detector; (b) RAMSES-ACC-UV UV spectrometer
Fig. 6. Number of clear days per month at three regions of Tibet
Fig. 7. Diurnal variation characteristics of solar erythemal UV radiation on clear days in 2017 at Tingri. (a) January—June; (b) July—December
Fig. 8. Diurnal variation characteristics of solar erythemal UV radiation on clear days in 2014 in Lhasa. (a) January—June; (b) July—December
Fig. 9. Diurnal variation characteristics of solar erythemal UV radiation on clear days in 2018 at Nyingchi. (a) January—June; (b) July—December
Fig. 10. Deviation of solar erythemal UV peak intensity. (a) Dose rate of solar erythemal UV radiation on February 8, 2014 in Lhasa; (b) dose rate of solar erythemal UV radiation versus solar zenith angle on February 8, 2014 in Lhasa
Fig. 11. Daily maximum dose rates of solar erythemal UV radiation on clear days at three regions of Tibet
Fig. 12. Daily total dose rates of solar erythemal UV radiation on clear days at three regions of Tibet
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Table 1. Observation site information of solar erythemal UV radiation
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