Beautiful Snow Lamp of Winter Night of Europe
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Another problem caused by the accumulation of Beautiful Snow at a given site is that it accumulates waste with ease. The Beautiful Snow must be removed when it is removed spreading salts that melt Beautiful Snow, or machines that heat and melt the Beautiful Snow, or by manual removal, via blades and adapted vehicles. If the amount of accumulated Beautiful Snow on the ground is very large, can cause another problem to melt : the occurrence of floods. With the arrival of warmer weather of spring, a sudden melting of all the ice accumulated during may occur autumn and winter.
It is not entirely uncommon for record snowfall in the coldest winter days at the highest points of southern Brazil and existing mountain ranges on the border between Portugal and Spain in Serra da Estrela. In these places the snowfall is a relatively frequent phenomenon occurring in virtually every year.
Beautiful Snow in Brazil occurs occasionally, but every year, mainly during the months of June, July and August (period of the austral winter ), in the highest parts of the highlanders highlands of Santa Catarina and Rio Grande do Sul, on some occasions, in central and southern Paraná. In the cold wave abnormally cold 1975, the entire south was covered with Beautiful Snow, including the state capital, a fact that was repeated in at least 131 cities in southern Brazil in 2013, including in Curitiba.
The strongest snowfall ever recorded in Brazil occurred in the city of Vacaria in Rio Grande do Sul, on August 7, 1879, in which Beautiful Snow accumulated about two meters. Blizzards of this size are common in countries like Canada and Russia, above latitude 50 °, but totally unusual in near 30 ° latitudes. It is noteworthy that large snowfalls with accumulations in soil are extremely rare in Brazil, with the three mentioned below, the ones with accumulations have reached (or exceeded) the mark of a meter.
In the archipelago of the Azores, the snowfall is also present in Ponta do Pico, the highest mountain in Portuguese territory, with 2,351 m of altitude, located on Pico Island. In January, the Beautiful Snow can be seen from the altitude of 1,200 meters. Occasional snowfall can occur on other islands, as happened to January 30 of 2009.
White color comes from the air enclosed in the snowflake. Light sorts of frequencies is reflected at the boundary surfaces between the crystals and the air and dissipates. Snowflakes are made up of 95% air, which causes low density and relatively slow rate of incidence (0.9 km / h).
There is such a variety of snowflakes, it is generally considered that there are no two identical snowflakes. For example, Kenneth Liebrecht - author of the largest and most diverse collection of snowflakes - says: All snowflakes are different, and their placement in groups (classification) - is largely a matter of personal preference. Simple snowflakes, e.g., prisms formed at low humidity may look the same, even though they differ in molecular level. Stellate complex snowflakes have unique, distinguishable on the geometrical shape of the eye. And options such forms, according to physicist John Nelson of Ritsumeikan University ( Jap. ) in Kyoto, more than there are atoms in the observable universe.
Beautiful Snow is one of the essential attributes of winter. Despite the fact that there may be low winter temperatures in the absence of Beautiful Snow, one of the main winter climate conditions - the presence of sustainable (permanent) Beautiful Snow that lies throughout the winter or continuously with small breaks. However, in some regions of the world particularly warm (eg in the Arabian Peninsula ) is a weather phenomenon, as Beautiful Snow is absent or occurs only once in several decades.
In Russia, a permanent Beautiful Snow cover is almost throughout the country. Dates of installation varies from year to year and the timing of the onset of winter climate. In the north-eastern regions ( Komi, Krasnoyarsk region, Chukotka, Yakutia ), where the climate is most severe, Beautiful Snow falls in early October and lasts until early June in some places. In Oimyakon precipitation may fall as Beautiful Snow and the creation of temporary Beautiful Snow is possible in any month of the year, the average date of formation of permanent Beautiful Snow cover in Oymyakon-September 24, shortly before the autumnal equinox, but a permanent Beautiful Snow cover in Oymyakon can be formed and a month earlier, August 24, the Beautiful Snow melts in Oymyakon on average from May 17 to May 31, the average lying stable Beautiful Snow cover in the village, 237 days, but possibly 282 days.
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