Observational evidence for a link between currents in the geotail and in the auroral ionosphere

Observational evidence for saturation of gravity waves and the production of turbulence in the mesosphere

Observational evidence for solar wind acceleration at the base of coronal holes

Observational evidence of a saturated gravity wave spectrum in the mesosphere

Observational evidence of ionospheric migrating tide modification during the 2009 stratospheric sudden warming

Observational evidence of the semiannual oscillation in the tropical middle atmosphere - A review

Observational results of the nighttime ion temperatures in the topside ionosphere by ISS-b

Observational studies of planetary waves in PMCs and mesospheric temperature measured by SNOE and SABER

Observational technique and parameter estimation in plasma line spectrum observations of the ionosphere by chirped incoherent scatter radar

Observational tests of coronal heating models

Observations and modeling of stratospheric warmings and mesospheric coolings by the TIMED/SABER instrument and the NOGAPS forecast system

Observations and modeling of wave-induced microburst electron precipitation

Observations and photochemistry of O/++/ in the daytime thermosphere

Observations by the CUTLASS radar, HF Doppler, oblique ionospheric sounding, and TEC from GPS during a magnetic storm

Observations in the upper atmosphere of infrasonic waves from natural or artificial sources - A summary

Observations of 3-m auroral irregularities during the ERRRIS campaigns

Observations of a day-time mid-latitude ionospheric trough

Observations of a distinctive infra-red spectral feature in the atmospheric spectra of polar stratospheric clouds measured by the CRISTA instrument

Observations of a Greenstein effect in the O I 1302A emission of Comet Halley

Observations of a Low Altitude Aurora and Simultaneous Phenomena.