TIMED Instruments

Jeng Hwa Yee, Elsayed R. Talaat, Andrew B. Christensen, Timothy L. Killeen, James M. Russell, Thomas N. Woods

Research output: Contribution to journalReview articlepeer-review


The Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED) mission is providing a core set of measurements defining the basic states of the mesosphere and lower thermosphere/ionosphere (MLTI) region (approximately 60-180 km above the Earth's surface) and its global energy balance. This article discusses the TIMED spacecraft's suite of four remote sensing instruments designed to observe the parameters that define the atmospheric basic state and energy inputs and outputs in the MLTI. The Global Ultra-Violet Imager (GUVI) is a spatial scanning far-ultraviolet spectrograph that measures composition and temperature in the lower thermosphere, as well as auroral energy inputs. The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument is an infrared radiometer that measures pressure, temperature, and infrared cooling rates in the stratosphere, mesosphere, and lower thermosphere. The Solar Extreme Ultraviolet Experiment (SEE) is a spectrometer and a suite of photometers measuring incoming solar irradiance. The TIMED Doppler Interferometer (TIDI), a Fabry-Perot interferometer, measures horizontal vector winds and composition in the mesosphere and lower thermosphere.

Original languageEnglish (US)
Pages (from-to)156-164
Number of pages9
JournalJohns Hopkins APL Technical Digest (Applied Physics Laboratory)
Issue number2
StatePublished - Apr 2003
Externally publishedYes

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy


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