Summer half-year those are called about 50% of the yearly, which lies between astronomical spring and beginning of autumn.

In the Northern Hemisphere of the earth this is the time between 20. March and 22 September, and/or between 21. March and 23 September, and in the Southern Hemisphere in reverse.

The date deviations from 1 day are mainly a consequence of the of intercalary days. They shift also slightly in the course of the decades, which decreases/goes back to the century rule of the Gregorian calendar and the variable inclined one of the ecliptic. In the Julian calendar however the equinoxes drifted since the turn of an era around already 13 days after forwards.

The Northern Hemisphere is in relation to the south something in the advantage, because our summer half-year is longer because of the easily ellipischen Earth's orbit some days than the winter term. Because the sun-next point, the so-called Perihel, occurs at present at the beginning of January. By this easy asymmetry in the global distribution of the solar radiation the north summers are theoretically warmer around some per cent, and additionally the winter is shorter around some days than southern the Therefore the climate is substantially rougher e.g. at the 45.Breitengrad in Argentina than for instance in Europe. Additionally there are regional influences like the distribution of the continents and the

In the economic use of the solar power the o.e makes. Influences nevertheless some per cent out. For example well laid out thermal solar plants cover in the summer half-year for the whole require, against what they supply only about 20% of the summer warm water between Octobers and March. As far one increases therefore the size of the solar collectors, requires an exact computation - the profit at summer energy cannot be used as a rule.

Articles in category "Summer half-year"

We found here 4 articles.