Global Human Built-up And Settlement Extent (HBASE) Dataset From Landsat, v1 (2009-2011)

The Global Human Built-up And Settlement Extent (HBASE) Dataset from Landsat is a global map of HBASE derived from the Global Land Survey (GLS) Landsat dataset for the target year 2010. The HBASE dataset consists of two layers: 1) the HBASE mask; and 2) the pixel-wise probability of HBASE. These layers are co-registered to the same spatial extent at a common 30m spatial resolution. The spatial extent covers the entire globe except Antarctica and some small islands. This dataset is one of the first global, 30m datasets of urban extent to be derived from the GLS data for 2010 and is a companion dataset to the Global Man-made Impervious Surface (GMIS) dataset. The HBASE mask was created for post-processing of the GMIS dataset, but can also be utilized by users needing a binary map. The dataset is expected to have a rather broad spectrum of users, from those wishing to examine/study the fine details of urban land cover over the globe at full 30m resolution to global modelers trying to understand the climate/environmental impacts of man-made surfaces at continental to global scales. For example, the data are applicable to local modeling studies of urban impacts on the energy, water, and carbon cycles, as well as analyses at the individual country level.基于Landsat的全球人类建成区与居民点范围（Global Human Built-up And Settlement Extent, HBASE）数据集，是以2010年为目标年份，从全球土地调查（Global Land Survey, GLS）的Landsat数据集衍生得到的全球HBASE分布图。该HBASE数据集包含两个图层：1）HBASE掩膜；2）逐像素HBASE概率值。两个图层已配准至统一空间范围，空间分辨率均为30米。其空间覆盖范围涵盖全球除南极洲与部分小型岛屿之外的全部区域。本数据集是首批基于2010年GLS数据衍生的全球30米级城市范围数据集之一，同时也是全球人造不透水面（Global Man-made Impervious Surface, GMIS）数据集的配套数据集。HBASE掩膜最初专为GMIS数据集的后处理而开发，但也可供需要二值化地图的用户使用。该数据集的适用群体十分广泛，既包括希望以完整30米分辨率研究全球城市土地覆盖细节的研究者，也包括试图在大陆乃至全球尺度上解析人造地表对气候与环境影响的全球建模人员。例如，该数据可用于城市对能源、水循环与碳循环影响的局地建模研究，以及单个国家层面的相关分析。