G-LiHT Aerial Orthomosaic image, acquired over Klamath Lake, Oregon on June 30, 2018.View full-size image
Goddard’s LiDAR, Hyperspectral, and Thermal Imager (G-LiHT) mission is a portable, airborne imaging system that aims to simultaneously map the composition, structure, and function of terrestrial ecosystems. G-LiHT primarily focuses on a broad diversity of forest communities and ecoregions in North America, mapping aerial swaths over the conterminous United States (CONUS), Alaska, Puerto Rico, and Mexico.
The purpose of G-LiHT’s Aerial Orthomosaic data product (GLORTHO) is to provide orthorectified high-resolution aerial photography. This data is provided as a supplement to other G-LiHT data products.
GLORTHO data are processed as a raster data product (GeoTIFF) at 0.02 m (1 inch) spatial resolution over locally defined areas. A low resolution browse is also provided with a color map applied in PNG format.
Metadata for individual flights is available as a pdf file and can be accessed through the Documentation button on this landing page. It contains information related to flight plans, acquisition details, field observations, and instrument specifications.
|File Size||~250 MB|
|Temporal Extent||2017-02-21 to Present|
|Spatial Extent||North America|
|Coordinate System||Universal Transverse Mercator (UTM)|
|Datum||World Geodetic System (WGS84)|
|Number of Science Dataset (SDS) Layers||1|
|Pixel Size||0.02 m|
|SDS Name||Description||Units||Data Type||Fill Value||No Data Value||Valid Range||Scale Factor|
|Aerial Orthomosaic||Aerial Orthomosaic||Meters||32-bit floating point||N/A||NaN||N/A||N/A|
Once available, detailed information on quality for the GLORTHO product can be found on the G-LiHT website.
Orthomosaics are automatically generated, and results may not be optimal.