Terms of Reference

The middle atmosphere (the stratosphere and mesosphere) is a region of complex dynamical–photochemical interactions. In order to help the middle-atmospheric scientists of differing specialties (such as atmospheric chemists, meteorologists, radio scientists, and aeronomers) find a common ground for interaction, it is imperative that middle-atmosphere research and observations be expanded so that we may better understand the effects of anthropogenic pollutants on the middle atmosphere. These efforts should include observations of the concentration and distribution of trace constituents (e.g., ozone), including monitoring to establish long-term trends; the advancement of our understanding of the transport of constituents into the middle atmosphere from above and below; the development of improved radiative transfer, photochemical, and dynamical models of the stratosphere and mesosphere; and the determination of the impact of changes in the middle atmosphere on long-range forecasting and climate.

It is the aim of this committee to encourage progress in the understanding of the middle atmosphere by all appropriate means, including the following:

  1. sponsoring the gathering of middle-atmospheric scientists of differing backgrounds at a regular biennial meeting;
  2. sponsoring special sessions and workshops on topical problems of interest to the Society;
  3. studying the status of observational and modeling programs of the middle atmosphere, summarizing their significant results, and reporting on those results periodically to the Society;
  4. studying aspects of man’s alteration of the middle atmosphere and the possible deleterious effects of anthropogenic and naturally released pollutants and reporting on those effects to the Society; and
  5. interacting with the Council, commissions, boards, and other committees especially the Committee on Climate Variations, the Committee on Atmospheric and Oceanic Waves and Stability, the Committee on Satellite Meteorology and Oceanography, and the Committee on Atmospheric Chemistry, in a manner that encourages progress in the understanding of the middle atmosphere.