I took some time this morning to download and review the new regional Landsat 5 false-color derived mosaics, provided by GeoSage at ~120 meter spatial resolution for non-commercial use. The dataset makes for a nice intermediate resolution, between the Blue Marble Next Generation mosaic made available by NASA, and any 30 or 15 meter higher resolution mosaics for mapping and visualization purposes. The original source for the false-color mosaic was made available through the GeoTorrent data-sharing portal, and converted to natural-color using specialized algorithms created by GeoSage using HighView technology.
As seen in the above exagerated 3D view near Mt. Fuji in Japan, this converted natural-color dataset offers an ideal pallet of color information and variability — highly suited for higher-altitude visualization or mapping and representation. The data is presented by GeoSage in regional mosaics available at the following Web page in Geographic Lat/Lon WGS-84 datum projection, in compressed ECW format. Additional metadata is also included in XML format:
http://www.geosage.com/highview/download_2.html
Additional mosaics for commercial and non-commercial use are also provided at the GeoSage Web site.
The 90 meter Version 3 SRTM digital elevation data that was used for the above representation was made available through the auspices of the Consortium for Spatial Information (CGIAR-CSI) and King’s College of London International Centre for Tropical Algriculture (CIAT) Land Use Project, available by download directly using the Google Earth interface from the files provided through the following location:
http://srtm.csi.cgiar.org/
Updated on: October 28th, 2007 at 3:43 pm
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