Review of the Field Measurements and Parameterization for Dust Emission During Sand-Dust Events

• Published in: Acta meteorologica Sinica Vol. 28; no. 5; pp. 903 - 922
• Main Author: 张宏升 李晓岚
• Format: Journal Article
• Language: English
• Published: Heidelberg The Chinese Meteorological Society 01.10.2014; Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences,School of Physics, Peking University, Beijing 100871
• Subjects: Atmospheric Protection/Air Quality Control/Air Pollution; Atmospheric Sciences; Earth and Environmental Science; Earth Sciences; Geophysics and Environmental Physics; Meteorology; 临界摩擦速度; 审查; 尘埃粒子; 排放通量; 数值模拟; 沙尘天气; 现场测量; 粉尘排放; parameterization; experimental observation; dust storm; dust emission by wind erosion
• ISSN: 0894-0525; 2095-6037; 2198-0934; 2191-4788
• DOI: 10.1007/s13351-014-3296-z

Dust emission generated by wind erosion is a basic process before the transport and deposition of dust particles. Parameterization of dust emission flux is important for accurate simulation and prediction of dust events. Field observation and numerical simulation are two approaches to understand the complex process of dust emission. Great progress has been made on the characteristics and mechanism of dust emission during dust storm events. This review introduces the major factors influencing dust emission and summarizes the calculation methods of several key parameters of dust emission, including the threshold friction velocity u.t, threshold wind speed Ut, streamwise saltation flux Q, and （vertical） dust emission flux F, from perspectives of both observation and parameterization. The paper also discusses the improvement, application, and validation of different dust emission schemes in dust models. Existing problems and future research directions are elaborated as well.