Particle Shape Impact on the Radiative Forcing Efficiency Estimated from Single Levitated (NH4)2SO4 Particles Valenzuela Gutiérrez, Antonio Single levitated particle Non-sphericity Radiative forcing efficiency This research was funded by the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 754446 and UGR Research and Knowledge Transfer Fund-Athenea3i. Levitation of single trapped particles enables the exploration of fundamental physicochemical aerosol properties never previously achieved. Experimental measurements showed that (NH4)(2)SO4's particle shape deviated from sphericity during the crystallization process. Despite that, salt aerosols are assumed to be spheres even in low relative humidity (RH) in most climate models. In the analysis performed here, Mie and T-Matrix codes were operated to simulate crucial parameters needed to estimate the radiative forcing efficiency: extinction efficiency, asymmetry parameter and backscattering fraction. The incorporation of non-spherical effects in (NH4)(2)SO4 particles can cause a difference of up to 46% radiative forcing efficiency compared to the assumption of sphericity in the 0.3-0.6 mu m particle radius range. 2021-10-25T06:48:01Z 2021-10-25T06:48:01Z 2021-09-21 journal article Gutierrez, A.V. Particle Shape Impact on the Radiative Forcing Efficiency Estimated from Single Levitated (NH4)2SO4 Particles. Atmosphere 2021, 12, 1231. [https://doi.org/10.3390/atmos12091231] http://hdl.handle.net/10481/71062 10.3390/atmos12091231 eng info:eu-repo/grantAgreement/EC/H2020/754446 http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España MDPI