Improved Modeling of Particle Dry Deposition

研究人员将开发和测试颗粒干沉积的过程级模型，直径为100到2000纳米，到一系列表面类型，重点是复杂的冠层。有助于沉积的相关过程（例如，布朗运动、撞击、表面阻力、沉积）将作为粒度的函数来研究，这是非常重要的，因为主要过程作为粒度的函数而变化。该模型将结合颗粒动力学（例如，凝固和生长）以及沉积，并且将检查方法，以便在类似的时间尺度上发生过程时最好地代表处理。将进行灵敏度分析，以确定控制颗粒沉积的主要参数。该模型将与由赫尔辛基大学的研究人员提供的涡流相关技术测定的颗粒沉积观测结果进行比较。本项目开发的改进模型将与其他现有的颗粒沉积模型进行比较。该项目的更广泛影响包括研究生和本科生的培训和教育，以及加强国际合作。

The researchers will develop and test process-level models of the dry deposition of particles, with diameters of 100 to 2000 nanometers, to a range of surface types with focus on complex canopies. The relevant processes contributing to deposition (for example, Brownian motion, impaction, surface resistance, sedimentation) will be studied as a function of particle size, which is very important since dominant processes change as a function of particle size. The model will incorporate particle dynamics (for example, coagulation and growth) along with deposition, and methods will be examined to best represent treatment when the processes occur on similar time scales. A sensitivity analysis will be conducted to determine the predominant parameters that control particle deposition. The model will be compared to observations of particle deposition determined using eddy covariance techniques provided by researchers from the University of Helsinki. The improved model developed in this project will be compared with other existing models of particle deposition. Broader impacts of this project include the training and educating of graduate and undergraduate students, and the enhancement of international collaborations.