The Halogen Occultation Experiment (HALOE) was launched on the Upper Atmosphere Research Satellite (UARS) spacecraft September 12, 1991. The experiment used solar occultation to measure vertical profiles of ozone, hydrogen chloride, hydrogen fluoride, methane, water, nitric oxide, nitrogen dioxide, Aerosol Extinction, Aerosol Surface and Temperature versus pressure with an instantaneous field of view of 1.6 km at the earth limb.

      The scientific goal of the SABER project is to explore the mesosphere and lower thermosphere globally and achieve a major improvement in our understanding of the fundamental processes governing the energetics, chemistry, dynamics and transport of the atmospheric region extending from 60 km to 180 km. SABER is one of four instruments on NASA's TIMED Mission.

      The SAGE II mission provided the scientific community with a long-term, global depiction of the distribution of aerosol, ozone, water vapor, and nitrogen dioxide. The data provided unique and crucial input to the understanding of global, seasonal to inter-annual variability in climate and, in particular, trends in stratospheric ozone.

      The SAGE III mission provided accurate, long-term measurements of ozone, aerosols, water vapor and other key parameters of the Earth's atmosphere. These observations are crucial for providing a better understanding of how natural processes and human activities may influence our climate.