ORNL DAAC Data Release - HyTES Level 1 Radiance, Facility Instrument Collection

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The Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC) released a new facility instrument collection for the HyTES instrument.

The Hyperspectral Thermal Emissions Spectrometer (HyTES) is an airborne pushbroom imaging spectrometer developed by the Jet Propulsion Laboratory (JPL). HyTES was designed to provide high spectral and spatial resolution thermal infrared (TIR) data as a precursor for NASA's planned Hyperspectral Infrared Imager (HyspIRI) orbital mission and has been used in several research missions since 2012.

HyTES offers high spatial and spectral resolution measurements of brightness temperature, emissivity, and land surface temperature. It operates across 256 spectral channels between 7.5 and 12 µm wavelengths in the thermal infrared part of the electromagnetic spectrum. HyTES has been deployed on DHC-6 Twin Otter, NASA's Earth Resources ER-2, and GulfStream V aircraft. It is useful for several applications, including high-resolution surface temperature and emissivity measurements, detection of trace gases such as methane, and volcano observations. HyTES was funded through NASA’s Earth Science Technology Office (ESTO) Instrument Incubator Program (IIP).

HyTES Level 1 Radiance, Facility Instrument Collection

This dataset contains Level 1 (L1) radiance imagery as well as per-pixel geolocation information from the HyTES instrument. This is the NASA Earth Observing System Data and Information System (EOSDIS) facility instrument archive of these data. Radiance units are W m-2 micron-1 sr-1. Geolocation information includes latitude, longitude, height, and number of steps taken during ray-casting. The data are provided in HDF-5 format. These HDF-5 files hold calibrated radiance data, raw radiance measurements, per-pixel geolocation information, and the wave matrix. The radiance data, while georeferenced, are not georectified.

More information on this dataset and others like it can be found on the HyTES Instrument page..

Citations: Hook, S. J., Hulley, G. C., La, T. T., Rivera, G., Johnson, W. R., & Eng, B. T. (2026). HyTES Level 1 Radiance, Facility Instrument Collection (Version 1). ORNL Distributed Active Archive Center. https://doi.org/10.3334/ORNLDAAC/2462