"Thaw" is a concept that causes conflicting feelings. On the one hand, this is a commemoration of spring, because everything is melting, it is getting warmer on the street. For others, this word may be associated with mud, slush and puddles. However, if we consider this process from the side of the scientific approach, then there are both positive and negative sides.
The thaw is a natural process that is characteristic of the temperate and northern latitudes of our Earth. Where there is no winter with snowy notes, this cannot happen. In addition, it should be noted that the association of this term with spring is not entirely true - it implies a sharp change in temperature just in the winter, when the temperature rises for several days. On the street at the same time it can be cloudy or vice versa sunny - it all depends on the reason for the manifestation of such a natural process.
It would seem that the bad thing is that in the middle of winter you can enjoy spring for several days. But, at the end of the thaw, ice almost always occurs. In addition, if the plus temperature lasted long enough, then the plants may mistakenly perceive this, so their awakening begins. Suddenly re-emerging frosts lead to the destruction of plantations.
In general, two types of such a process are considered:
- advective - such types of thaws, as a rule, occur at the beginning of winter, and can last even until the New Year holidays. This natural process is caused by the arrival of warm air masses, mainly from the territory of the Atlantic. The weather at this time is usually cloudy;
- radiation - similar types of thaws occur in late winter and early March. At this time, the weather, on the contrary, is sunny, so it often seems to people that spring has already arrived. In fact, this is deceptive - after a few days, frosts come again.
Sometimes the two forms described above are mixed. These days, there may be a sharp fluctuation in the daily temperature - during the day it can be very warm, and at night there are frosts and even large frosts. It goes without saying that such vagaries of weather have no positive effect on vegetation.
What is the danger?
At first glance, there is nothing critical here - what's wrong with spring coming for a few days? Meanwhile, there is much more negative than positive. Moreover, this applies not only to plantations, as mentioned above.
The greatest damage, of course, is caused by human agricultural activity - due to abrupt warming, the snow cover is disturbed, and therefore, the plants are defenseless against the new frosts.
Such temperature jumps are dangerous for the person himself. First of all, it should be noted that after any thaw there is ice, and this leads to accidents on the roads, a breakdown in communications, and injuries to pedestrians. Doctors also note that sudden changes in temperature pose a threat to people who suffer from cardiovascular diseases. This also has no positive effect on psychological health.