LBA-ECO LC-15 Aerodynamic Roughness Maps of Vegetation Canopies, Amazon Basin: 2000

This data set provides physical roughness maps of vegetation canopies in the Amazon Basin. The images are estimates of aerodynamic roughness length (Z0) and zero plane displacement height (D0) at 1-km spatial resolution. The aerodynamic roughness length (Z0) is an important parameter to determine the vertical gradients of mean wind speed and the conditions for momentum transfer over a vegetated or bare rough surface.

The maps were produced from a multivariate regression model algorithm developed from field-measured vegetation structure and remote-sensing data. The data input sources included Shuttle Radar Topography Mission (SRTM) (Saatchi, 2013), JERS-1, MODIS, and field data from vegetation biomass plots over the Amazon basin, as well as tower-based wind profile measurements, and roughness parameters from LBA tower sites.

There are two GeoTIFF (.tif) files with this data set.

本数据集提供亚马逊流域植被冠层的物理粗糙度图谱。这些影像为空间分辨率1千米的空气动力学粗糙度长度（aerodynamic roughness length, Z0）与零平面位移高度（zero plane displacement height, D0）的估算值。空气动力学粗糙度长度（Z0）是确定平均风速垂直梯度，以及植被或裸露粗糙地表动量传输条件的关键参数。
该粗糙度图谱基于多变量回归模型算法生成，该算法由野外实测植被结构数据与遥感数据构建而成。数据输入源包括航天飞机雷达地形测绘任务（Shuttle Radar Topography Mission, SRTM）（Saatchi, 2013）、JERS-1卫星、MODIS传感器数据、亚马逊流域植被生物量样地野外实测数据，以及基于塔台的风廓线测量数据与LBA塔台站点获取的粗糙度参数。
本数据集包含两份GeoTIFF（.tif）格式文件。