Articles | Volume 13, issue 6
Research article
11 Jun 2020
Research article |  | 11 Jun 2020

A hybrid method for reconstructing the historical evolution of aerosol optical depth from sunshine duration measurements

William Wandji Nyamsi, Antti Lipponen, Arturo Sanchez-Lorenzo, Martin Wild, and Antti Arola

Related authors

Further validation of the estimates of the downwelling solar radiation at ground level in cloud-free conditions provided by the McClear service: the case of Sub-Saharan Africa and the Maldives Archipelago
William Wandji Nyamsi, Yves-Marie Saint-Drenan, Antti Arola, and Lucien Wald
Atmos. Meas. Tech., 16, 2001–2036,,, 2023
Short summary
Rethinking the correction for absorbing aerosols in the OMI- and TROPOMI-like surface UV algorithms
Antti Arola, William Wandji Nyamsi, Antti Lipponen, Stelios Kazadzis, Nickolay A. Krotkov, and Johanna Tamminen
Atmos. Meas. Tech., 14, 4947–4957,,, 2021
Short summary
Assessment of five different methods for the estimation of surface photosynthetically active radiation from satellite imagery at three sites – application to the monitoring of indoor soft fruit crops in southern UK
Claire Thomas, Stephen Dorling, William Wandji Nyamsi, Lucien Wald, Stéphane Rubino, Laurent Saboret, Mélodie Trolliet, and Etienne Wey
Adv. Sci. Res., 16, 229–240,,, 2019
Short summary
Deriving Photosynthetically Active Radiation at ground level in cloud-free conditions from Copernicus Atmospheric Monitoring Service (CAMS) products
William Wandji Nyamsi, Phillipe Blanc, John A. Augustine, Antti Arola, and Lucien Wald
Biogeosciences Discuss.,,, 2018
Manuscript not accepted for further review
Short summary
A new method for estimating UV fluxes at ground level in cloud-free conditions
William Wandji Nyamsi, Mikko R. A. Pitkänen, Youva Aoun, Philippe Blanc, Anu Heikkilä, Kaisa Lakkala, Germar Bernhard, Tapani Koskela, Anders V. Lindfors, Antti Arola, and Lucien Wald
Atmos. Meas. Tech., 10, 4965–4978,,, 2017
Short summary

Related subject area

Subject: Aerosols | Technique: In Situ Measurement | Topic: Data Processing and Information Retrieval
Towards a hygroscopic growth calibration for low-cost PM2.5 sensors
Milan Y. Patel, Pietro F. Vannucci, Jinsol Kim, William M. Berelson, and Ronald C. Cohen
Atmos. Meas. Tech., 17, 1051–1060,,, 2024
Short summary
Enhancing characterization of organic nitrogen components in aerosols and droplets using high-resolution aerosol mass spectrometry
Xinlei Ge, Yele Sun, Justin Trousdell, Mindong Chen, and Qi Zhang
Atmos. Meas. Tech., 17, 423–439,,, 2024
Short summary
Machine learning approaches for automatic classification of single-particle mass spectrometry data
Guanzhong Wang, Heinrich Ruser, Julian Schade, Johannes Passig, Thomas Adam, Günther Dollinger, and Ralf Zimmermann
Atmos. Meas. Tech., 17, 299–313,,, 2024
Short summary
A searchable database and mass spectral comparison tool for the Aerosol Mass Spectrometer (AMS) and the Aerosol Chemical Speciation Monitor (ACSM)
Sohyeon Jeon, Michael J. Walker, Donna T. Sueper, Douglas A. Day, Anne V. Handschy, Jose L. Jimenez, and Brent J. Williams
Atmos. Meas. Tech., 16, 6075–6095,,, 2023
Short summary
Numerical investigation on retrieval errors of mixing states of fractal black carbon aerosols using single-particle soot photometer based on Mie scattering and the effects on radiative forcing estimation
Jia Liu, Guangya Wang, Cancan Zhu, Donghui Zhou, and Lin Wang
Atmos. Meas. Tech., 16, 4961–4974,,, 2023
Short summary

Cited articles

AERONET: V3 Data Product, available at:, last access: 1 June 2020. 
Alexandersson, H.: A homogeneity test applied to precipitation data, Int. J. Climatol., 6, 661–675,, 1986. 
Aoki, K., Hayasaka, T., Takemura, T., Nakajima, T., Kim, S. W., and Sohn, B. J.: Aerosol Optical Characteristics Measured by Sky Radiometers during the ABC/EAREX2005 Observation, Korea-Japan-China Joint Conference on Meteorology, Kintex Conference Center, 1–13 October, Goyang, Korea, 2006. 
Baumgartner, T.: Die Schwellenintensität des Sonnenscheinautographen Campbell-Stokes an wolkenlosen Tagen, Arbeitsberichte der Schweizerischen Meteorologischen Zentralanstalt, No. 84, Zürich, 1979. 
Bider, M.: Über die Genauigkeit der Registrierungen des Sonnenscheinautographen Campbell-Stokes, Archiv für Meteorologie, Geophysik und Bioklimatologie, Serie B, 9, 199–230,, 1958. 
Short summary
This paper proposes a novel and accurate method for estimating and reconstructing aerosol optical depth from sunshine duration measurements under cloud-free conditions at any place and time since the late 19th century. The method performs very well when compared to AErosol RObotic NETwork measurements and operates an efficient detection of signals from massive volcanic eruptions. Reconstructed long-term aerosol optical depths are in agreement with the dimming/brightening phenomenon.