Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 17, issue 20
Articles | Volume 17, issue 20
https://doi.org/10.5194/amt-17-6085-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-17-6085-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 20
Research article
 | 
18 Oct 2024
Research article |  | 18 Oct 2024

Intercomparison of aerosol optical depth retrievals from GAW-PFR and SKYNET sun photometer networks and the effect of calibration

Angelos Karanikolas, Natalia Kouremeti, Monica Campanelli, Victor Estellés, Masahiro Momoi, Gaurav Kumar, Stephan Nyeki, and Stelios Kazadzis

Supplement

https://doi.org/10.5194/amt-17-6085-2024-supplement

Data sets

Rome Aerosol Optical Depth (AOD) with Precipitable Water and Angstrom Parameter level 2.0 Version 3 Direct Sun Algorithm P. Goloub et al. https://aeronet.gsfc.nasa.gov/cgi-bin/webtool_aod_v3?stage=3&region=Europe&state=Italy&site=Rome_La_Sapienza&place_code=10&if_polarized=0

Davos Aerosol Optical Depth (AOD) with Precipitable Water and Angstrom Parameter level 2.0 Version 3 Direct Sun Algorithm C. Wehrli et al. https://aeronet.gsfc.nasa.gov/cgi-bin/webtool_aod_v3?stage=3&region=Europe&state=Switzerland&site=Davos&place_code=10&if_polarized=0

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Short summary
Different sun photometer networks use different instruments, post-processing algorithms and calibration protocols for aerosol optical depth (AOD) retrieval. Such differences can affect the homogeneity and comparability of their measurements. In this study, we assess the homogeneity between the sun photometer networks GAW-PFR and SKYNET, analysing common measurements during three campaigns between 2017–2021, and investigate the main cause of the differences.
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