| Summary: | Based on massive ortho-rectified Landsat images, the 30m Global Mosaic Map (One-Map) of 2018 with consistent color is made by several key techniques like semi-automatic data selection, automatic mosaic, color balancing, etc. The data is projected as WGS84 latitude/longitude projection and saved in GeoTiff format. For the convenience of users, the data is also re-tiled and has inner pyramids pre-built. The valid area of One-Map covers all land from 60°S to 80°N except Greenland, and the candidate scene of each Path/Row is the one with lowest cloud cover in growing period or the composed of all scenes in 2018 using the median value. This dataset can serve as a base map since its high geometry precision and great color consistency for applications in Remote Sensing, Virtual Reality, etc.
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