Print Email Facebook Twitter Inverse modeling of the 2021 spring super dust storms in East Asia Title Inverse modeling of the 2021 spring super dust storms in East Asia Author Jin, J. (TU Delft Mathematical Physics; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control; Nanjing University of Information Sciences and Technology) Pang, Mijie (Nanjing University of Information Sciences and Technology) Segers, Arjo (DIANA FEA) Han, Wei (China Meteorological Administration) Fang, Li (Nanjing University of Information Sciences and Technology) Li, Baojie (Nanjing University of Information Sciences and Technology) Feng, H. (TU Delft Mathematical Physics; China Institute of Water Resources and Hydropower Research) Lin, H.X. (TU Delft Mathematical Physics) Liao, Hong (Nanjing University of Information Sciences and Technology) Date 2022 Abstract Last spring, super dust storms reappeared in East Asia after being absent for one and a half decades. The event caused enormous losses in both Mongolia and China. Accurate simulation of such super sandstorms is valuable for the quantification of health damage, aviation risks, and profound impacts on the Earth system, but also to reveal the climatic driving force and the process of desertification. However, accurate simulation of dust life cycles is challenging, mainly due to imperfect knowledge of emissions. In this study, the emissions that lead to the 2021 spring dust storms are estimated through assimilation of MODIS AOD and ground-based PM10 concentration data simultaneously. With this, the dust concentrations during these super storms could be reproduced and validated with concentration observations. The multi-observation assimilation is also compared against emission inversion that assimilates AOD or PM10 concentration measurements alone, and the added values are analyzed. The emission inversion results reveal that wind-blown dust emissions originated from both China and Mongolia during spring 2021. Specifically, 19.9×106 and 37.5×106ĝ€¯t of particles were released in the Chinese and Mongolian Gobi, respectively, during these severe dust events. By source apportionment it was revealed that the Mongolian Gobi poses more severe threats to the densely populated regions of the Fenwei Plain (FWP) and the North China Plain (NCP) located in northern China than does the Chinese Gobi. It was estimated that 63ĝ€¯% of the dust deposited in FWP was due to transnational transport from Mongolia. For NCP, the long-distance transport dust from Mongolia contributes about 69ĝ€¯% to the dust deposition. To reference this document use: http://resolver.tudelft.nl/uuid:2f9f553b-319d-4042-98ac-71beeeca80ef DOI https://doi.org/10.5194/acp-22-6393-2022 ISSN 1680-7316 Source Atmospheric Chemistry and Physics (online), 22 (10), 6393-6410 Part of collection Institutional Repository Document type journal article Rights © 2022 J. Jin, Mijie Pang, Arjo Segers, Wei Han, Li Fang, Baojie Li, H. Feng, H.X. Lin, Hong Liao Files PDF acp_22_6393_2022.pdf 10.01 MB Close viewer /islandora/object/uuid:2f9f553b-319d-4042-98ac-71beeeca80ef/datastream/OBJ/view