Structural redundancy as robustness assurance of complex geoengineering systems Alina Dychko, Igor Yeremeyev, Natalya Remez, Serhii Kraychuk and Natalia Ostapchuk E3S Web Conf., 166 (2020) 11003 Published online: 22 April 2020 DOI: 10.1051/e3sconf/202016611003