A global view on the effect of water uptake on aerosol particle light scattering Burgos, María A. Titos Vela, Gloria Alados Arboledas, Lucas A reference dataset of multi-wavelength particle light scattering and hemispheric backscattering coefficients for different relative humidities (RH) between RH = 30 and 95% and wavelengths between λ = 450 nm and 700 nm is described in this work. Tandem-humidified nephelometer measurements from 26 ground-based sites around the globe, covering multiple aerosol types, have been re-analysed and harmonized into a single dataset. The dataset includes multi-annual measurements from longterm monitoring sites as well as short-term field campaign data. The result is a unique collection of RH-dependent aerosol light scattering properties, presented as a function of size cut. This dataset is important for climate and atmospheric model-measurement inter-comparisons, as a means to improve model performance, and may be useful for satellite and remote sensing evaluation using surface-based, in-situ measurements. 2020-05-06T07:46:57Z 2020-05-06T07:46:57Z 2019 journal article Burgos, M. A., Andrews, E., Titos, G., Alados-Arboledas, L., Baltensperger, U., Day, D., ... & Sun, J. (2019). A global view on the effect of water uptake on aerosol particle light scattering. Scientific data, 6(1), 1-19. http://hdl.handle.net/10481/61821 10.1038/s41597-019-0158-7 eng info:eu-repo/grantAgreement/EC/FP7/654109 http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España Springer Nature