Thermosphere Ionosphere Mesosphere Energetics and Dynamics TIMED

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Thermosphere Ionosphere Mesosphere Energetics
and Dynamics (TIMED)

• Evan Briggs
• ASCI 511

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Overview

• History
• Mission
• Onboard Instruments
• Contributions
• Conclusion

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History

• Launched 7 December 2001 from Vandenberg AFB, CA
• 74.1 inclination and 625 km circular orbit
• NASA sponsored remote sensing project
• Initially planned as two year operation

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Mission

• Primary objective of TIMED focused on improving
  understanding of energy transfer into and out of
  Mesosphere and Lower Thermosphere/Ionosphere
  (MLTI) region of earths atmosphere
• Provide understanding of basic structure that
  results from energy transfer into the region

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Mission Continued
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Mission Continued

• MLTI region located 40 110 miles above earths
  surface
• Extremely sensitive to external influences from
  the sun above and changes to the region from
  below
• TIMED uses remote sensing technology to gather
  measurements concerning wind, temperature, and
  density

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Onboard Instruments

• Global Ultraviolet Imager (GUVI)
• Spatial-scanning, far-uv spectrograph designed to
  globally measure the composition and temperature
  profiles of the MLTI region, as well as its
  auroral energy inputs
• Solar Extreme Ultraviolet Experiment (SEE)
• Spectrometer/photometers designed to measure the
  solar soft X-rays, extreme-ultraviolet and
  far-ultraviolet radiation that is deposited into
  the MLT region.

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Onboard Instruments Continued

• TIMED Doppler Interferometer (TIDI)
• Measures the wind and temperature profiles of the
  MLTI region
• Sounding of the Atmosphere using Broadband
  Emission Radiometry (SABER)
• Radiometer used to measure heat emitted by the
  atmosphere over a broad altitude and spectral
  range, as well as global temperature profiles and
  sources of atmospheric cooling

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Contributions

• Measurements taken by TIMED will provide critical
  empirical data to help scientists better
  understand the region's energy balance
• TIMED will establish a baseline for future
  investigations of the MLTI region, providing a
  basis for early warning of global change

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Conclusion

• Overview
• History
• Mission
• Onboard Instruments
• Contributions

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Questions?
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References

• http//en.wikipedia.org/wiki/TIMED
• http//www.timed.jhuapl.edu
• http//www.timed.jhuapl.edu/WWW/science/meetings/2
  005_S3C_Senior_Review_11_15/TIMED_2005_Senior_Revi
  ew_Presentation.pdf