Abstract
In our previous reports, stochastical studies were tried for the fluctuations of monthly mean temperature and pressure for August at the various stations in the neighbourhood of Japan. Significant periodic fluctuations of about 7-years were detected then. Such periodicity was distinct in the middle latitudes and was presented in the zonal oscillation of North Pacific High. In this paper, we have tried the statistical investigation for the periodicity in monthly mean situation in the Northern Hemisphere. The results obtained are as follows.
1) The periodicity of about 7-years for the monthly mean pressure and temperature for August are stochastically significant in Central and Southern Europe, and for August mean pressure in Southern India, Java and Sumatra.2) The periodic fluctuations of 7-years for August mean pressure in Europe are everywhere in phase, but for the temperature, they are inverse between Greenwich and Alexandria.3) The periodic fluctuations of 7-years for August mean pressure in Europe and India are also in phase.4) The periodic fluctuations of 7-years for August. mean pressure in Europe are ahead of Japan for several years.
