Articles | Volume 15, issue 19
https://doi.org/10.5194/amt-15-5667-2022
https://doi.org/10.5194/amt-15-5667-2022
Research article
 | 
11 Oct 2022
Research article |  | 11 Oct 2022

Sensitivity of aerosol optical depth trends using long-term measurements of different sun photometers

Angelos Karanikolas, Natalia Kouremeti, Julian Gröbner, Luca Egli, and Stelios Kazadzis

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Latest update: 22 Feb 2024
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Short summary
The aim of this work is to investigate the limitations of calculating long-term trends of a parameter that quantifies the overall effect of atmospheric aerosols on the solar radiation. A main finding is that even instruments with good agreement between their observations can show significantly different linear trends. By calculating time-varying trends, the trend agreement is shown to improve. We also show that different methods of trend estimation can result in significant trend differences.