Orthonormal Wavelet Analysis of Space-Scale Relationships in the Atmospheric Boundary Layer Over Complex Terrain

研究旨在提高我们对大气层的认识- 局部和区域尺度的地表关系。 的 该项目将涉及大气边界层的分析， 研究湍流的空间尺度关系。 的参数化 大气边界层（ABL）输送对于 自大气边界层以来非均匀区域地表通量的定量 整合区域尺度通量。 必要的实验数据 进行分析已经收集：1）字段（1 2）盆地（15 km长） 规模）实验在Ojai谷南部加州，3）区域 (100公里长规模）的实验在兰德斯地区， 法国西南部HAPEX-MOBILHY的一部分。 收集的数据 在不同的地区，将使用companion进行分析， 支持正交小波展开研究空间 不同波数下地表热通量的不透明度 在惯性子范围内。 此外，双光谱，使 湍流能量的空间尺度表示， 应用于不同的感热和潜热通量 大气稳定性条件。 空间概率 在不同尺度的热通量分布也将是 分析了 最终，该项目将提供基本信息， 用于将ABL模型发展为参数曲面 大气环流模式中的通量。

Research is proposed to improve our understanding of atmosphere- land surface relationships at local and regional scales. The project will involve analysis of the atmospheric boundary layer to study turbulent space-scale relationships. Parameterizations of the Atmospheric Boundary Layer (ABL) transport are critical for quantifying surface fluxes over heterogeneous regions since the ABL integrates regional scale fluxes. The experimental data necessary to carry out the analysis have already been collected: 1) Field (1 km length scale) experiments near UC Davis, 2) Basin (15 km length scale) experiments in Ojai Valley southern California, 3) Regional (100 km length scale) experiments in the Landes Regional in southwestern France as part of HAPEX-MOBILHY. The data collected over the different regions will be analyzed using compactly supported orthonormal wavelet expansions to study spatial intermittency of the surface heat fluxes for various wave numbers in the inertial subrange. In addition dual spectra, which enable a space-scale representation of the turbulent energy, shall be applied to sensible and latent heat fluxes for different atmospheric stability conditions. The spatial probability distribution of the heat fluxes at various scales will be also analyzed. Ultimately this project will provide basic information for the development of models of the ABL to parameterize surface fluxes in general circulation models.