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The COST 271 Action («Effects of the Upper Atmosphere on Terrestrial and Earth-space Communications ») within the European ionospheric community has the objectives, embodied in the Memoran...
The first part of the paper is directed to the investigation of the practical importance of possible longterm trends in the F2-layer for ionospheric prediction models. Using observations of about 50 d...
In the frame of the European COST 296 project (Mitigation of Ionospheric Effects on Radio Systems, MIERS) investigations of the climate of the upper atmosphere have been carried out during the last fo...
Using the nadir-viewing Global Ozone Measuring Experiment (GOME) UV/VIS spectrometer on the ERS-2 satellite, we investigate short term variations in the vertical magnesium column densities in the atmo...
We describe the development of a new sodium temperature lidar for probing the upper atmosphere over Antarctica. The laser transmitter consists of two injection-seeded Nd:YAG lasers with wavelengths of...
The Mars Reconnaissance Orbiter (MRO) spacecraft will undergo aerobraking from April through September 2006 in order to achieve the desired mapping orbit. This aerobraking process requires knowledge o...
This paper analyzes the effects of the solar rotational (27-day) irradiance variations on the chemical composition and temperature of the stratosphere, mesosphere and lower thermosphere as simulated b...
26 January 2007,UK researchers from University College London (UCL), along with colleagues from Boston University, have found that the hotter than expected temperature of Saturn’s upper atmosphere a...

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