G-LiHT Aerial Orthomosaic

PI: Bruce Cook


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.

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Collection and Granule


Characteristic Description
File Size~250 MB
Temporal ResolutionVaries
Temporal Extent2017-02-21 to Present
Spatial ExtentNorth America
Coordinate SystemUniversal Transverse Mercator (UTM)
DatumWorld Geodetic System (WGS84)
File FormatGeoTIFF
Geographic DimensionsVariable


Characteristic Description
Number of Science Dataset (SDS) Layers1
Pixel Size0.02 m

Layers / Variables

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

Product Quality

Once available, detailed information on quality for the GLORTHO product can be found on the G-LiHT website.

Known Issues

Orthomosaics are automatically generated, and results may not be optimal.

About the image

G-LiHT Aerial Orthomosaic image, acquired over Klamath Lake, Oregon on June 30, 2018.

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User Guide

G-LiHT Metadata

Using the Data

Access Data


DOI: 10.5067/Community/GLIHT/GLORTHO.001