Investigations of the Solar Influence on Middle Atmospheric Water Vapour and Ozone During the Last Solar Cycle—Analysis of the MPS Data Set

摘要: The MPS water vapour and ozone data set was gained with ground-based microwave heterodyne spectrometers operating since mid of the nineties last century at two locations: latitude in Katlenburg-Lindau (51.66°N, 10.13°E) Germany ALOMAR polar (69.29°N, 16.03°E) Northern Norway. observations show a pronounced year-to-year variability annual maxima summer minima winter related to Lyman-α radiation. In we found an anti-correlation upper mesospheric solar activity. After solstice concentration is strongly influenced by sudden stratospheric warmings (SSWs) appearing more frequently during high stratopause lower mesosphere region find positive correlation activity whole year. Ozone also shows strong (but different) pattern: late maximum middle which shifted into autumn region, distinct nighttime around 72 km season, whereas no occurs there daytime. A clear asymmetry distribution exists this domain, marked decline mean values January/February increase subsidiary few kilometres higher March/April. These asymmetric variations result from occurrence rate SSWs after variation spring equinox.