ASoRA: Attenuation of the Solar Radiation by Aerosols

The aim of the ASoRA project was to improve the estimate of the solar ressource for the Concentrated Solar Plants (CSP) with tower technology. Observation data sets were exploited to derive the attenuation of the solar radiation between the heliostat and the optical receiver.

HYGEOS provided all necessary aerosol and radiative parameters to make the best estimate of the plant productivity, considering the atmospheric attenuation.

Satellite remote sensig observation data was used to estimate the solar resource for tower CSPs located anywhere in the world. The representativity of satellite products was evaluated by ground-based instrumentation. The diffusometer was an operational instrument providing estimates of the aerosol extinction at surface level. The diffusometer measurements needed to be corrected according to the aerosol nature, with an impact of up to +/-4% on slant path transmittance estimates.

Computations can be provided for any specific location or extended area in the world. Time series can cover several tens of years, at a frequency higher than one hour. Some demonstration products are presented.

Estimation of atmospheric attenuation in both the atmospheric column and in the slant path,
exploiting satellite remote sensing observation data.
Acurate estimation of atmospheric attenuation in the slant path,
by ground-based instrumentation.

Presentations during 4 years at the Solar PACES 2015-2018 conferences:

4 posters in 2015, 2016, 2017 and 2018.

1 oral presentation in 2018.

4 proceeding papers in 2016, 2017, 2018, 2019 (Moulana et al.; Elias et al.).

R&D studies on solar resource in CSPs continue at HYGEOS by hosting a Ph.D. thesis.

Funder: co-funding by EDF and HYGEOS
Duration: 2015-2018
Contact at Hygeos: Thierry Elias