Scientific Objectives and early Results from the Global Ultraviolet Imager (GUVI) on the TIMED Spacecraft

Details Scientific Objectives and early Results from the Global Ultraviolet Imager (GUVI) on the TIMED Spacecraft Scientific Objectives and early Results from the Global Ultraviolet Imager (GUVI) on the TIMED Spacecraft

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsa51a..08c&link_type=abstract

American Geophysical Union, Spring Meeting 2002, abstract #SA51A-08

Computer Science

Performance

0310 Airglow And Aurora, 0358 Thermosphere: Energy Deposition

Scientific paper

The Global Ultraviolet Imager (GUVI) is a scientific instrument aboard the TIMED spacecraft launched 7 December 2001 into a 625 km circular polar orbit with an inclination of 74.1 degrees. The GUVI science goals are to determine the spatial and temporal variations of temperature and constituent densities in the lower thermosphere and determine the importance of auroral energy sources and solar EUV to the energy balance of the region. The GUVI investigation provides multiple wavelength simultaneous "monochromatic" images of the Earth's ultraviolet airglow and auroral emission in the far ultraviolet (FUV) at wavelengths from 115 nm to 180 nm. A microprocessor controlled cross-track scan mirror mechanism is used to produce FUV images of the disk and limb of the Earth. The sensor has been designed to meet performance goals for the science objectives and to obtain images of the atmospheric emissions in sunlight and darkness. A summary of early orbit observations and analysis will be presented.

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