Physics
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jastp..71.1514l&link_type=abstract
Journal of Atmospheric and Solar-Terrestrial Physics, Volume 71, Issue 14-15, p. 1514-1528.
Physics
10
Long-Term Trends, Ionosphere, Mesosphere, Thermosphere
Scientific paper
The global pattern of long-term trends and changes in the upper atmosphere and ionosphere has been presented by Lastovicka et al. [2006a. Global change in the upper atmosphere. Science 314 (5803), 1253-1254]. Trends in the mesospheric temperature, electron concentration in the lower ionosphere, electron concentration and height of its maximum in the E-region, electron concentration in the F1-region maximum, thermospheric neutral density and F-region ion temperature qualitatively agree with consequences of the enhanced greenhouse effect and form a consistent pattern of global change in the upper atmosphere. Three groups of parameters were identified as not-fitting this global pattern, the F2-region ionosphere, mesospheric water vapour, and the mesosphere/upper thermosphere dynamics. The paper reports progress in development of the global pattern of trends with emphasis to these three open problems. There are several other factors contributing to long-term trends, namely the stratospheric ozone depletion, mesospheric water vapour concentration changes, long-term changes of geomagnetic activity and of the Earth's magnetic field.
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