Articles | Volume 18, issue 19
Atmos. Chem. Phys., 18, 14555–14567, 2018
https://doi.org/10.5194/acp-18-14555-2018
Atmos. Chem. Phys., 18, 14555–14567, 2018
https://doi.org/10.5194/acp-18-14555-2018

Research article 11 Oct 2018

Research article | 11 Oct 2018

Assessment of Sun photometer Langley calibration at the high-elevation sites Mauna Loa and Izaña

Carlos Toledano et al.

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Latest update: 30 Nov 2021
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Short summary
Most of the ground-based radiometric networks have their reference instruments and/or calibrate them at Mauna Loa or Izaña. The suitability of these high-mountain stations for absolute radiometric calibrations is investigated with the support of 20 years of first-class Sun photometer data from the AERONET and GAW-PFR networks. We analyze the number of calibration days at each site in a climatological sense and investigate the uncertainty of the calibrations based on long-term statistics.
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