N: 73 S: 10 E: -50 W: -170
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.
Product Summary
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.
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Variables
The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
| Name Sort descending | 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 |