22 August 2017 Critical discussion on the UV absorption properties of Earth's atmosphere
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Proceedings Volume 10453, Third International Conference on Applications of Optics and Photonics; 104530I (2017) https://doi.org/10.1117/12.2271645
Event: Third International Conference on Applications of Optics and Photonics, 2017, Faro, Portugal
Abstract
Sun´s ultraviolet radiation is classified into UV-A, UV-B, and UV-C bands. Thereby UV-A passes through Earth´s atmosphere, while UV-B is partially absorbed by ozone. The limitations of the commonly accepted statement, that UV-C is always completely absorbed by Earth´s atmosphere, are discussed critically. Below 200 nm the solar spectrum is strongly absorbed by molecular oxygen. The stratospheric ozone layer has strong absorption between 200 nm and 300 nm. However, the “ozone hole” increases UV-B radiation just below 300 nm and may also open a transmitting atmospheric window for harmful UV-C at the overlap region between oxygen absorption and ozone absorption.
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Thorsten Döhring, Thorsten Döhring, } "Critical discussion on the UV absorption properties of Earth's atmosphere", Proc. SPIE 10453, Third International Conference on Applications of Optics and Photonics, 104530I (22 August 2017); doi: 10.1117/12.2271645; https://doi.org/10.1117/12.2271645
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