Seasons and Weather
Awaking all biological process in the nature in a view of pouring shower rains on the ground, making ready the flora, the forest, plants for growth in summer, the spring plays the key role.
Hydrologic cycle in the nature means modification of the aqua conditions from the original when the water evaporates on the earth to converting into steam. The final stage of this processes is a change of cloud that forming under influence of risen steam that during going up is getting cold because of the low air temperature and after reversely modified into water drops or frozen ice granules. So called clouds are exactly these surfused steam particles. Floating under the earth, cumulus and rainy clouds are typical for the summer. On the contrary, in winter when cirrus clouds are soaring high in the sky.
The most common spring meteorological phenomena are exemplified by snow melting, flooding, and budding on the trees and the bushes, as well as not surprising to observe the first thunderstorm.
The nature phenomenon of wind has a place owing to the motion of the air flows under the influence of different kind of pressures. As usually, they are monodirectional, coursed to the horizontal direction. Cyclones and anticyclones are formed by influence of movement of air; the first represent the atmospheric masses.
Supercooled water steam staying in the air plays a cloud-forming role. These cloud consist of millions tiny ice crystals. The temperature conditions below zero degrees, results to accelerate of growing crystals and to weighting frozen drops. The last are melting on the cloud bottom and than fall as rain drops on the earth. Alto-, stratus and nimbus generate rain falling.
Summer gifts us bright sunshine, warmth and for the most part the good weather conditions. In summer meteorological factors are favorable, the sparkling sun, light clouds, tender breeze, however, the weather presents lowering and even menacing mood. Heavy rains, showers, storms could be happily ended with a fabulous natural phenomenon as a rainbow.
The storm is a powerful natural phenomenon which deliberates the strong electrical discharges in cloud bodies. It happens near the earth surface. Thunder storming occurs when displacement and ascent of the warm air is realized by the cold fronts. Storm cloud is made of darkening water masses. The decomposition stage brings modification clouds in heavy rains view. Squall winds, peals of thunder and lightning accompany it.
Summer storms could be hailed. What is the hail itself? It is very little particles of icy which are formed in over cold cloud. Freezing of the water drops do not have time to be melt but rush on to the ground immediately.
The magic of nature has it physical explanation. The rainbow, for example, caused by the high level of atmospheric humidity after the rains and storms, as usually. This optical phenomenon is observed by people as a colourful rainbow on the assumption of the sun is behind the observers, so, to see both of them is utopia. Deflecting the sun rays makes the optical distortion and aberration from the gamma by different colours in the water drops. The white colour for instance breaks up into a vivid rainbow spectrum of colors.
Dew is falling in summer, spring and autumn. When the early morning comes up the tiny water drops are left on the grass after night. It makes believe it was rainy despite of the clear sky. The explanation of it is simple. The nocturnal air cold becomes cold and makes free the steam which was inside of it. The vapour contacts with everything on the surface. Grass, leaves and ground are covered by the tiniest drops. By the way, in autumn after cold nights the drops of dew are frozen and make effect of white colored grass.
Autumn sunny days are gradually substituted by long dull days with rains and stepwise decreasing of temperature. In autumn nature bestows us with phenomena such as rain, fog, defoliation and when the winter is on the threshold frost and the first snow appear too.
The mist or fog as usually occurs when low temperatures come during the nights, evenings and mornings. At high humidity which could be caused by rain, for instance, cooling air is converted into small water drops. These drops are microscopic and have light weight; they do not use to fall on the ground and are entrapped by the air. The result of it is a formation of an opaque watery mist, so called fog which could be often seen in late autumn in November.
In autumn, when daily temperature is above zero degrees, and at night is below zero, the earth is getting colder. The frost may form and the puddles are covered with a thin ice pellicle. Later in winter the nigh frost temperature serves for cooling the earth, grass and trees. The steam in the air that is consisted of watery drops correlates with cold surfaces and subsided on it turning into a thin pellicle of ice. The natural rule is if the temperature of the earth decreases below zero there is frost on the ground. On contrary, you can expect to see dew.
Autumn Leaf Fall
During passing a year-round cycle the plants and trees casting their leaves in autumn, the bark and branches are exposed that significant preparation for hibernation. Even when defoliation has not started yet, the leaves becoming yellow or red and the wind makes them to fall on the ground. It looks like a dance of leaves… Fallen leaves serve for nature to utilize for future growth. So, in spring the old leaves form humus that is so important for the young vegetation period.
In winter the vegetable kingdom falls to sleep and majority of animals are in hibernation. The most common phenomena of winter nature are freezing snowing, snowstorm, blizzard, etc. The frost draws its motives on the windows in particularly cold days.
In winter precipitation occurs in the view of snow falling and snowstorms. The snow plays important role for nature. Covering the ground and plants it keeps the warm where similar to a hotbed the little winter animals and insects are saved from to be frozen. When the thaw and the temperature is about zero the snow becomes wet and sticky. The snowy rain, ice-slick on the roads could happen. At low temperatures the snow is getting dry and friable; during the snowstorm the snowflakes go round and you can shakes off them from the clothes without difficulties.
The calm weather brings with it big sized snowflakes that turn to the snowstorm or blizzard with the intensity of falling them. Drifting snow is the most menacing winter phenomenon in winter. It appears when the first rush of wind occurs. It picks up the snow and takes with itself. The snowstorm is distinguished into upper and lower that depends on the air masses redistribution. As usually, the strong snowstorms take place in the middle of winter when the peak of seasonal temperatures is. This factor of nature influences on forming the character of a snow landscape. The wind scatters the snow takes fanciful forms.