沙尘天气起沙过程是构成沙尘气溶胶循环的首要环节，定量和完整描述起沙过程是实现 沙尘气溶胶准确模拟和预测的基础。起沙过程具有较强的非平稳性、非均匀性，存在间歇性特征， 也称间歇性起沙，如何准确刻画间歇性起沙过程是当前沙尘研究中一项前沿科学难题。基于国内 外近20 年起沙过程的外场观测、风洞试验和数值模拟研究成果，回顾了间歇性起沙观测技术的发 展及其发生条件和识别方法，总结了间歇性起沙的通量变化特征及边界层湍流结构和动力热力过 程的作用机理，梳理了不同起沙机制条件下起沙参数化方案的发展及间歇性起沙过程的表征，并 针对目前研究中存在的问题和今后可能的发展方向提出建议。

Abstract：Dust emission process is the primary component in the dust cycle. Quantitative and complete description of the dust emission process is the basis for accurate simulation and prediction of dust aerosols. Dust emission process is highly non-steady and non-uniform and has intermittent feature, also known as intermittent dust emission. How to accurately describe the intermittent dust emission process is an important scientific issue in current dust research. Based on the research results of dust emission processes from field experiment, wind tunnel experiment and numerical simulation during the past two decades, the development of observation techniques for intermittent dust emission process based on high-frequency measurements and its occurrence conditions and identification methods using relevant turbulence thresholds and intermittent factors are reviewed. The impact mechanism of boundary-layer turbulence structure and their thermal and dynamic-thermal effects during intermittent dust emission process are summarized. The development of dust emission parameterization schemes under different dust-emission mechanisms, particularly the methods to establish intermittent dust emission schemes via introducing gust variations, intermittent factors, or probability density distributions of turbulence parameters are discussed. Finally, some suggestions are put forward for the problems existing in current dust emission research and future potential research directions.