Articles | Volume 14, issue 3
https://doi.org/10.5194/amt-14-2441-2021
https://doi.org/10.5194/amt-14-2441-2021
Research article
 | 
29 Mar 2021
Research article |  | 29 Mar 2021

Ångström exponent errors prevent accurate visibility measurement

Hengnan Guo, Zefeng Zhang, Lin Jiang, Junlin An, Bin Zhu, Hanqing Kang, and Jing Wang

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Cited articles

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Ångström, A.: On the atmospheric transmission of Sun radiation and on dust in the air, Geogr. Ann., 11, 156–166, 1929. 
Biral: RWS 30-Manual, UK, available at: https://www.biral.com/wp-content/uploads/2018/05/RWS-30-User-Manual-107384.00B.pdf (last access: 27 January 2021), 2018. 
Bohren, C. F. and Huffman, D. R.: Absorption and Scattering of Light by Small Particles, Wiley, New York, USA, 1983. 
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Short summary
Visibility is an indicator of atmospheric transparency and is widely used in many research fields. Although efforts have been made to improve the performance of visibility meters, a significant error exists in measured visibility data. This is because current methods of visibility measurement include a false assumption, which leads to the long-term neglect of an important source of visibility errors. Without major adjustments to current methods, it is not possible to obtain reliable data.
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