Global Man-made Impervious Surface (GMIS) Dataset From Landsat

The Global Man-made Impervious Surface (GMIS) Dataset From Landsat consists of global estimates of fractional impervious cover derived from the Global Land Survey (GLS) Landsat dataset for the target year 2010. The GMIS dataset consists of two components: 1) global percent of impervious cover; and 2) per-pixel associated uncertainty for the global impervious cover. 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 man-made impervious cover to be derived from the GLS data for 2010 and is a companion dataset to the Global Human Built-up And Settlement Extent (HBASE) dataset. 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.

《全球人造不透水地表（GMIS）数据集》源自Landsat卫星数据，包含针对目标年份2010的全球不透水地表覆盖度分数估算。该数据集由两个部分组成：1）全球不透水地表覆盖百分比；2）每个像素对应的全局不透水地表覆盖的不确定性。这些图层在同一空间范围内，以共同的30米空间分辨率进行配准。空间范围覆盖全球，除南极洲和一些小岛屿外。本数据集是全球首个基于GLS数据，以30米分辨率生成的全球人造不透水地表覆盖数据集之一，并作为《全球人类建成区和居住地范围（HBASE）数据集》的配套数据集。预计本数据集将拥有广泛的用户群体，从希望以30米全分辨率考察/研究全球城市地表覆盖细微细节的用户，到试图理解人造地表在大陆到全球尺度上对气候/环境影响的全局模型师。例如，这些数据适用于城市对能源、水和碳循环的影响的本地建模研究，以及国家层面的分析。