The Measurements of Pollution in the Troposphere (MOPITT) Instrument

  • James R. Drummond
  • G. V. Bailak
  • G. Mand

Abstract

The earth’s environment is changing through natural and artificial mechanisms. Monitoring these changes on a global basis is becoming an international priority. The troposphere, being the area of the atmosphere which we inhabit, is of great importance although it is extremely difficult to make measurements of this region from space due to the interfering effects of clouds and the nearby surface. However the state of the troposphere, and particularly its chemistry is of considerable and immediate importance. The MOPITT instrument will use the principle of correlation spectroscopy to measure carbon monoxide (CO) amounts at three levels in the troposphere utilising thermal radiation at 4.7/μm, and the total column amount of CO and methane (CH4) using reflected sunlight around 2.3lLim. The required accuracy is 10% for the CO measurements and 1% for the CH4 channels. These figures pose a considerable challenge to the instrument engineering.

Keywords

Artificial Mechanism Stirling Cycle Canadian Space Agency Total Column Amount Radiance Calibration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. J.R. Drummond, 1988, A novel correlation radiometer — the length-modulated radiometer, Applied Optics, 28, 2451–2452.CrossRefGoogle Scholar
  2. Taylor, F.W., 1983, Pressure Modulator Radiometry, Spectrometric Techniques, Vol. HI, Academic Press, 137–197.Google Scholar
  3. J.R. Drummond and G.S. Mand, 1994, The measurements of pollution in the troposphere, MOPITT instrument: overall performance and calibration requirements, submitted to Journal of Atmosphericand Oceanic Technology, February, 1994.Google Scholar

Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • James R. Drummond
    • 1
  • G. V. Bailak
    • 1
  • G. Mand
    • 1
  1. 1.Department of PhysicsUniversity of TorontoCanada

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