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Space Science Reviews

, 214:4 | Cite as

Retrieval of Lower Thermospheric Temperatures from O2 A Band Emission: The MIGHTI Experiment on ICON

  • Michael H. Stevens
  • Christoph R. Englert
  • John M. Harlander
  • Scott L. England
  • Kenneth D. Marr
  • Charles M. Brown
  • Thomas J. Immel
Article
Part of the following topical collections:
  1. The Ionospheric Connection Explorer (ICON) mission

Abstract

The Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) is a satellite experiment scheduled to launch on NASA’s Ionospheric Connection Explorer (ICON) in 2018. MIGHTI is designed to measure horizontal neutral winds and neutral temperatures in the terrestrial thermosphere. Temperatures will be inferred by imaging the molecular oxygen Atmospheric band (A band) on the limb in the lower thermosphere. MIGHTI will measure the spectral shape of the A band using discrete wavelength channels to infer the ambient temperature from the rotational envelope of the band. Here we present simulated temperature retrievals based on the as-built characteristics of the instrument and the expected emission rate profile of the A band for typical daytime and nighttime conditions. We find that for a spherically symmetric atmosphere, the measurement precision is 1 K between 90–105 km during the daytime whereas during the nighttime it increases from 1 K at 90 km to 3 K at 105 km. We also find that the accuracy is 2 K to 11 K for the same altitudes. The expected MIGHTI temperature precision is within the measurement requirements for the ICON mission.

Notes

Acknowledgements

ICON is supported by NASA’s Explorers Program through contracts NNG12FA45C and NNG12FA421.

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2017

Authors and Affiliations

  • Michael H. Stevens
    • 1
  • Christoph R. Englert
    • 1
  • John M. Harlander
    • 2
  • Scott L. England
    • 3
  • Kenneth D. Marr
    • 1
  • Charles M. Brown
    • 1
  • Thomas J. Immel
    • 4
  1. 1.U.S. Naval Research LaboratoryWashingtonUSA
  2. 2.Space Systems Research CorporationAlexandriaUSA
  3. 3.Department of Aerospace and Ocean EngineeringVirginia Polytechnic Institute and State UniversityBlacksburgUSA
  4. 4.Space Sciences LaboratoryUniversity of California—BerkeleyBerkeleyUSA

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