We provide evidence of the influence of planetary waves on the intensity variations of the 557.7‐nm airglow emission. The comparison relies on simultaneous measurements at four different stations located between 37°N and 56°N in latitude, 36°E and 3°W in longitude: meteor wind observations in France and USSR and optical measurements at 557.7 nm in France and Spain, in July 1971. An oscillation of period near 2 days had been identified in the wind data; it is also apparent on the nightglow intensity variations. Its characteristics are well accounted for by the first symmetric mode of the 52‐ hour period planetary oscillation of horizontal wave number 3, described previously (Glass et al., 1975). A 4±1 hour period gravity wave apparently present in the data of the French stations is discussed.
The WINDII instrument (Wind Imaging Interferometer) is dedicated to the measurement of the temperature and wind in the upper Earth's atmosphere. It was launched with the NASA-UpperAtmosphere Research Satellite on September 12, 1991. It analyzes the natural emission lines of the atmosphere by an inteiferometric method to extract the temperature and wind information.Such a mission requires building the instrument, preparing its modes of operation, its scientific data processing, and evaluating its performance.To achieve these last tasks simulated data are needed. Which is why we have developed a quite extensive code of simulation which consists of several models: instrument, atmosphere to be observed (temperature, wind and intensity), orbit and attitude, and instrumental noises.The simulated data have permitted the evaluation of certain instrument effects and suggested some improvements of design. The effects of the various sources of noise have been studied. Scenarios of observations have been derived allowing the study of the scientific data processing algorithms and evaluation of their performances.Simulation of such a space instrument has been seen as an essential step in the design of the mission.
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