Our results suggest that, due to the presence of equatorial coronal holes, the ordered pattern of CIR tilts and their associated shocks, which was observed during Ulysses initial southward excursion in 1992, will likely disappear as Ulysses traverses toward higher latitudes. We anticipate that while Ulysses will continue to encounter fast streams, they will not persist for more than a fraction of a solar rotation. Finally, the simulations suggest that crossings of the heliospheric current sheet will persist up to approximately 70 degrees heliographic latitude. The studies of climate variability and in particular those referred to the global warming require combined data from different places geographically distributed. A very high correlation between the behavior of the mean temperature at Havana City, and the length of the solar cycle during the 1889-1991 period is presented in this work.
Similar analysis done with the pressure also show good correlation.
These results could be evidence on behalf that solar activity or another agent close linked to it has a meaningful influence on the long term fluctuations of the low atmosphere temperature and pressure in a long term period. Also was done an analysis of mean, maximum and minimum temperatures in Havana during the years 1871-1996 in relation with the solar cycle. Nevertheless during the summer season this effect is not observed. This phenomenon could be related to changes in the atmospheric circulation due the corpuscular radiation of solar origin.