TIMED GUVI: Ultraviolet Airglow Flux Movies in North Polar Projection

TIMED satellite's Global Ultraviolet Imager (GUVI) measures far ultraviolet airglow in five spectral bands, including the LBH2 band from 1650-1800 Å. This Level 1C Disk dataset provides calibrated, geolocated, and rectified intensities for LBH2, presented as movies of log intensities using a north polar projection. The instrument's cross-track scanning spectrograph images a ground swath of 3000 km width, providing nearly contiguous global coverage with 15 orbits per day.

Use Cases

• Visualizing global ultraviolet airglow patterns based on mapped images of log intensities.
• Analyzing atmospheric composition based on calibrated intensities in the LBH2 wavelength band.
• Studying orbital variations in airglow based on images presented by orbit.
• Mapping polar region phenomena based on the north polar projection.
• Correlating airglow intensity with other atmospheric data based on geolocated and rectified measurements.

Strengths

• Provides calibrated, geolocated, and rectified intensities for a specific ultraviolet wavelength band.
• Cross-track scanning provides a ground swath of 3000 km width.
• Nearly contiguous global coverage is achieved with 15 orbits per day.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the north polar projection.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Data gathered by the TIMED satellite's Global Ultraviolet Imager (GUVI) instrument.

Geography

Global coverage with a north polar projection.