Historical building footprint area (BUFA) - gridded surfaces for the conterminous U.S. from 1900 to 2010

These files are part of the dataset \"Historical building footprint areas (BUFA) - gridded surfaces for the conterminous U.S. from 1900 to 2010\", contained in the dataverse “HISDAC-US: Historical Settlement Data Compilation for the United States” (https://dataverse.harvard.edu/dataverse/hisdacus). Each GeoTIFF file contains a geospatial raster layer with pixel values representing the total building footprint area (i.e., the built-up surface in m²) within each 250 m x 250 m grid cell, at 10 years temporal resolution. The .readme file provides additional information on the underlying methodology. Data sources: Microsoft USBuildingFootprints v2019 + Zillow Transaction and Assessment Dataset (ZTRAX, Zillow Inc., v2017).这些文件隶属于数据集「历史建筑占地面积（Building Footprint Areas，缩写BUFA）——1900年至2010年美国本土网格化地表数据」，该数据集收录于“HISDAC-US：美国历史定居点数据汇编”数据库（https://dataverse.harvard.edu/dataverse/hisdacus）。每个GeoTIFF文件均包含一个地理空间栅格图层，其像素值代表每个250米×250米网格单元内的总建筑占地面积（即以平方米计量的建成地表面积），时间分辨率为10年。该自述文件（.readme）提供了本数据集所采用的核心研究方法的补充说明。数据来源：微软美国建筑足迹数据集2019版 + 齐洛交易与评估数据集（Zillow Transaction and Assessment Dataset，缩写ZTRAX，齐洛公司2017版）。