August 19, 2022
Do you know icicles, a natural phenomenon that is often confused with snow?

Do you know icicles, a natural phenomenon that is often confused with snow?

A tree covered with amazing ice in Jilin Province, China.

the winter It is a season of the year characterized by the effect of the apparent movement of the sun in the sky and as a function of latitude. for shorter days, because the sun stays less time above the horizon. With less time in the sun, the temperatures are lower!

When the meteorological panorama of mainland Portugal is conditioned by the anti-peak / anti-cyclone effect – everything indicates that it will happen in the last days of 2021 according to the latest forecasts projected by a model ECMWF – It can carry into your circulation p polar. Being cool and dry, this air causes remarkable cooling at night and huge daily heat capacity..

The combination of these weather conditions allows for an amazing occurrence and Enchanting landscapes carved by nature, like those we sometimes find in Inland North and Central (real villageAnd visioAnd Bragança e a look, for example), in regions such as the valleys of the Toa (northeast of Transmontano) and the Douro.

How is it formed or authenticated?

sometimes, This meteorological phenomenon is often confused with frost or snow for the resemblance to its appearance. However, this natural process is not caused by snowfall, but rather by a Watery meteorite deposits! This deposit It occurs when the cooling of solid surfaces is sufficient to condense or solidify the moisture in the air., with conditions for the appearance of a “family” of meteorological phenomena, which include dew, frost and sincerely.

You are Snowflakes are small columns of suspended ice, reminiscent of “stalactites”, formed by freezing dew water., which drips from the edges of ceilings or tree branches when Temperatures record values ​​below 0°Cbelow the freezing point. The part that freezes first, which is closest to the bottom of the drop, creates a hollow tube that grows vertically downward, and when it grows faster at the tip than on the sides, they have a conical shape.

Thus, with reference to the geographical region in which this phenomenon is likely to form – valley – Topographically favorable area for Be very dense fogPrecipitation may occur ice crystalsHence the confusion that many people make frost or snow.

In fact, it is undeniable that this kind of meteorological phenomenon carves a wonderful landscape, and decorates the winter scene of different European regions, such as black forest in Germany, or the Arad District, in the western part of Romania.

However, despite the inherent beauty of ice, Very cold Which is necessarily related to the occurrence of this phenomenon It is also synonymous with danger, for example, because of Snow that appears on the roads This requires the utmost caution on the part of drivers.