Skip to main content

Description

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 Hyperspectral Ancillary data product (GLHYANC) is to provide information related to aircraft attitude and altitude, view and solar angles, and other ancillary reflectance and radiance data.

GLHYANC data are processed as a zipped raster data product (GeoTIFF) with associated header file (.hdr) at 1 meter spatial resolution over locally defined areas.

Version Description

This is version one of the G-LiHT dataset.

Product Summary

Platforms
G-LiHT
Instruments
Headwall ,
Riegl Airborne Lidar
Spatial Extent

N: 73 S: 10 E: -50 W: -170

Spatial Resolution
1 Meters x 1 Meters
Geographic Region
PUERTO RICO ,
MEXICO ,
UNITED STATES OF AMERICA
Coordinate System
GEODETIC
Granule Spatial Representation
GEODETIC
Temporal Extent
2011-06-30 to Present
Temporal Resolution
Varies
Data Partner
Land Processes Distributed Active Archive Center (LP DAAC) ,
Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD)
Concept ID
C2763264728-LPCLOUD
Data State
ACTIVE
Number of Files/Granules
4244
Processing Level
0
Published
Updated
Science Keywords
Reflectance

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Cook, B., & Halota, A. (2022). G-LiHT Hyperspectral Ancillary V001 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/COMMUNITY/GLIHT/GLHYANC.001 Date Accessed: 2025-12-16

Documents

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
aircraft altitude AGL aircraft altitude Above Ground Level (AGL) Meters float32 N/A 0 to 1000 N/A
aircraft elevation aircraft elevation Meters float32 N/A 0 to 1500 N/A
clearness index clearness index N/A float32 N/A 0 to 1 N/A
day of year day of year Julian day float32 N/A 0 to 366 N/A
GLT flag Geographic Lookup Table (GLT) flag Number float32 N/A 0 to 1 N/A
modeled clear-sky irradiance modeled clear-sky irradiance W/m² float32 N/A 0 to 2000 N/A
observed incoming PAR observed incoming photosynthetically active radiation (PAR) W/m² float32 N/A 0 to 1500 N/A
solar azimuth solar azimuth Degree float32 N/A 0 to 360 N/A
solar zenith angle solar zenith angle Degree float32 N/A -180 to 180 N/A
swath number swath number Number float32 N/A N/A N/A
view angle view angle Degree float32 N/A 0 to 360 N/A
view azimuth view azimuth Degree float32 N/A 0 to 360 N/A
You're viewing 12 of 12