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MLS Research
The overall objective of MLS research is to improve understanding of how our atmosphere works and provide information needed for policy decisions. The unique MLS measurements of many stratospheric chemicals are essential for understanding ozone layer stability and possible threats to it. Its measurements of upper tropospheric water vapor and cloud ice, which have historically been difficult, provide key data on feedback processes affecting climate change. Its measurements of pollution in the upper troposphere, including in the presence of ice clouds that prevent measurement by other techniques, provide unique data on the long-range transport of pollution and its possible effects on climate.

MLS research areas are conveniently separated into the following categories:
  • Stratosphere and Mesosphere
  • Stratosphere / Troposphere Interactions
  • Troposphere, Air Quality, and Climate
  • Measurement Science and Validation
Information on areas within each category is accessible via the links at left under "Research". Additionally, more information about significant discoveries from Aura can be viewed here.



Research highlights to date include results relative to:
  • Stratospheric polar winter processes and ozone loss
  • Upper tropospheric water vapor and cloud ice processes affecting climate
  • Stratospheric chlorine and bromine, and their chemistry affecting ozone
  • Stratospheric and mesospheric hydrogen chemistry
  • Processes in the tropical tropopause layer
  • Stratospheric dynamics and transport
  • Pollution in the upper troposphere


MLS featured in Nature    MLS on the cover of the Bulletin of the American Meteorological Society

MLS Research Publication Statistics

(click here for full list of publications)

MLS Publication Statistcs


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