| Title | Tempo-Spatial Distributions and Transport Characteristics of Two Dust Events over Northern China in March 2021 |
| Authors | Sun, Xiaoguang Fan, Xuehua Zhang, Tianle Wang, Yinan Wang, Yuntao Lyu, Daren Zheng, Mei |
| Affiliation | Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Observ, Beijing 100029, Peoples R China Chengdu Univ Informat Technol, Coll Elect Engn, Chengdu 610225, Peoples R China Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Cont, Beijing 100871, Peoples R China Minist Nat Resources, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Peoples R China |
| Keywords | AEROSOL OPTICAL-PROPERTIES RADIATIVE PROPERTIES VERTICAL STRUCTURE DESERT DUST ASIAN DUST AERONET RETRIEVALS HIMAWARI-8 TAKLIMAKAN FREQUENCY |
| Issue Date | Dec-2022 |
| Publisher | REMOTE SENSING |
| Abstract | The Taklamakan Desert and the Gobi Desert in East Asia constitute the second-largest sources of dust in the world. In particular, dust originating from the Gobi Desert is more susceptible to long-range transport, with consequent impacts in downwind Asian countries and the Northwest Pacific region. Two intensive dust events (the 3 center dot 15 dust event and the 3 center dot 28 dust event) were experienced in North China in March 2021. The 3 center dot 15 dust process was rated as the most intensive dust process in China in the past 10 years. In this study, by using a combination of spaceborne remote sensing datasets from geostationary and polar-orbiting satellites, ground-based columnar observations of aerosol optical parameters, meteorological reanalysis data, and backward trajectory simulations of air masses, the transport pathways and the three-dimensional structure characteristics of dust aerosols during the transport of the two dust events in March 2021 were cross-validated. The results of the study indicated that the two dust events were induced by the Mongolian cyclone. Due to the different configurations of the ground meteorological system conditions, a backflow process occurred during the 3 center dot 15 dust event transmission process. After passing over North China and the Bohai Sea, the direction of transport of the dust plume was reversed. The wind deflected from northwest to northeast, and the dust reached the eastern coastal areas of China and was finally deposited on land. The 3 center dot 28 dust event exhibited aerosol stratification in the transport path, the higher pure dust layer reached up to 9 km height, and the lower layer underwent aerosol mixing and became a polluted dust aerosol. This study implies that the investigation of dust aerosol transport and the deposition processes, the impact on the ocean, and the impact of marine aerosols on land also needs to be taken into consideration; the integration of advanced satellites and ground-based remote sensing data, the meteorological reanalysis data and the backward trajectories simulation, which complemented and verified each other, can enhance the ability to delineate the transport pathways and the three-dimensional structural characteristics of dust events. |
| URI | http://hdl.handle.net/20.500.11897/661958 |
| DOI | 10.3390/rs14235967 |
| Indexed | SCI(E) |
| Appears in Collections: | 环境科学与工程学院 环境模拟与污染控制国家重点联合实验室 |
