Exchange processes in mountainous regions; Turbulence and stand-scale modelling

山区的交换过程；

• 批准号: 135270131
• 负责人: Professor Dr. Thomas Foken
• 金额: --
• 依托单位: Abteilung Mikrometeorologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/135270131?language=en
• 关键词: Exchange; processes; mountainous; regions; Turbulence

Within this sub-project the physical, and also in part chemical, processes on the stand scale will be studied by experimental and modelling activities. The following processes will be investigated at the forest site and at the forest edge with eddy-covariance and profile techniques and several statistical tools: turbulent fluxes, coherent structures, footprints, coupling of the atmosphere and the canopy, advection, exchange coefficients, scalar similarity to chemical fluxes, and quality control of all data and uncertainties. Within the project the higher order closure model ACASA will also be applied as well a gas flux model for the soil and several footprint models and approaches. The project supports all of the other projects of the bundle application with meteorological input data and interpretation tools for the complicated turbulent exchange or advection processes in and above the forest and at the forest edge. Furthermore, forcing parameters for all model studies (measured and modelled data) will be made available. Together with the LES simulation carried out in another subproject, a complete description of the turbulent exchange processes and of secondary circulation on the stand to catchment scale will be made available. The main aim is to investigate how the fluxes change in a disturbed forest ecosystem.

在这一分项目内，将通过实验和模拟活动研究林分规模的物理过程和部分化学过程。将在森林地点和森林边缘利用涡动协方差和剖面技术以及若干统计工具调查下列过程：湍流通量、相干结构、足迹、大气和树冠层的耦合、平流、交换系数、化学通量的标量相似性以及所有数据和不确定性的质量控制。在该项目中，还将应用高阶闭合模型ACASA以及土壤气体通量模型和几种足迹模型和方法。该项目为捆绑应用的所有其他项目提供气象输入数据和解释工具，用于森林内外和森林边缘复杂的湍流交换或平流过程。此外，还将提供所有模式研究的强迫参数（测量数据和模拟数据）。与在另一个子项目中进行的LES模拟一起，将提供对湍流交换过程和站到流域尺度的二次环流的完整描述。主要目的是调查如何在干扰森林生态系统的通量变化。