AVIRIS-5 L2B Greenhouse Gas Enhancements, Facility Instrument Collection

Overview

Description

This dataset contains Level 2B (L2B) enhancements of greenhouse gases (GHG) derived from imagery collected by the Airborne Visible / Infrared Imaging Spectrometer-5 (AVIRIS-5) instrument. Products include methane and carbon dioxide enhancements, each with per-pixel uncertainties and sensitivities to the background. Concentrations are estimated from radiance measurements enhanced using a column-wise adaptive matched filter approach, which searches each pixel's radiance spectrum for deviations that are characteristic of a GHG's absorption spectrum. This is the NASA Earth Observing System Data and Information System (EOSDIS) facility instrument archive of these data. The NASA AVIRIS-5 is a spectral mapping system that measures reflected radiance at 5-nm intervals in the Visible to Shortwave Infrared (VSWIR) spectral range from 380-2500 nm. The AVIRIS-5 sensor has a 40-degree instantaneous field of view with 1239 pixels, providing altitude dependent ground sampling distances from 12 m to sub meter range. This spectrometer measures radiance from surface and atmosphere and is extremely similar in design to the orbital Earth Surface Mineral Dust Source Investigation (EMIT) spectrometer. GHG data are provided in cloud optimized GeoTIFF (COG) format. In addition, ancillary files for each flight line are provided, including a quicklook image in GeoTIFF format and text files in YAML format that document processing algorithms and parameters used during production. AVIRIS-5 supports NASA Science and applications in many areas including plant composition and function, geology and soils, greenhouse gas mapping, and calibration of orbital platforms.

Science Keywords

Data Use and Citation

Data Files

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