Impact of East-Asian monsoon on sandstorm activities over the past half century: Insights from a genetic algorithm

For nearly half a century, the East Asian sand–dust system (SDS) has undergone complex changes in intensity and has become a new focus of attention. To date, there are many uncertainties in understanding the complex observational facts of SDS using commonly used single-climate models. This study suggests that the SDS is an organized weather system that grows under the support of an atmospheric westerly belt environment (including water, soil, aerosol composition, and climate change). The novelty of this study lies in the development of a new genetic algorithm that can decipher the generation, motion, decay, and regeneration of SDS. It focuses on analysing the historical evolution of SDS over the past half century and establishing a digital coding system based on the Genetic algorithm Chromosome-sequencing Chronology of SDS (GCC-SDS). This approach can decipher the inter- and quasi-annual fluctuations of SDS, as well as the impact of changes in climate conditions. It also reveals the influence of the Earth's rotation on the distribution and changes in winter air currents in East Asia and their influence on SDS activity the region. This further deepens our understanding of historical changes in SDS and the mechanisms behind their impact. [Display omitted] •Revealing impact of East Asian monsoon on SDS activity over the past half century•GA captured key climate-states and given to diagnose the historical evolution of SDS•Neither a “monotonous up” nor a “monotonous down” of SDS-intensity insights from GA•Updating SDS GA digital-decoding is beneficial for targeted managed to SDS-pollution.