6 Seasons in Nepal of a Year – All About Seasons (Ritu)

Name list of 6 Seasons in a year with some facts and information

This post is about name list of 6 Seasons in a year with detail information. We are going to discuss the name list of seasons in Nepali, Hindi and English script and font. You can know the all the information about seasons in a year including the Himalayan kingdom of Nepal and India.

Seasons in the Aisa in a Year

Seasons in a year

Our weather changes all year long this is called seasons. The seasons cycle around from fall to winter to spring to summer every year. The seasons change because of two things. Firstly, how much direct sunlight a place gets during the year and how long the sun shines on that place during the day. They are very important elements in our lives. The change can have profound effects on daylight, temperature, animals, and vegetations. It will have an influence on what we wear, what we eat and what we do in our free time. They also affect our mood, behavior, and whether we are in.

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In ancient civilizations, people observed that the sun was at different places during different times of the year. But they didn’t understand how this led to the changes in seasons. Towards the end of the Middle Ages, the astronomer Nicolai Copernicus changed our view of the solar system. He said that the sun, not the Earth, was at its center and all objects moved around it. Today, we know that the Earth moves in an elliptical path around the sun. It takes 365 days for the earth to complete around the sun. The Earth also spins on it’s our axis. It takes 24 hours to do it.

Causes for Change of Seasons

The sun is tilted towards or away from the sun. This means that the northern and southern parts of the Earth get different amounts of sunlight throughout the year. The sun gives us heat too and temperatures change, depending on how steep the sun’s rays come in. A season is a division of the year, marked by changes in weather, ecology, and hours of daylight. Seasons result from the yearly orbit of the Earth around the Sun and the tilt of the Earth’s rotational axis relative to the plane of the orbit.

Earth’s multiple motions — spinning on its axis and orbiting the sun — are behind everything from day and night to the changing seasons. The temperature and wind make the world move around the sun. Through the changes between earth rotation and sun, the temperature increases or decreases, producing the four main seasons of. spring, summer, autumn, and winter.

The Earth’s axis is tilted at 23.5 degrees, which makes the Northern Hemispheres point more directly at the sun half the year, and the Southern Hemisphere does the same the other half. In the Northern Hemisphere, days reach their maximum and minimum.

The seasons start with solstices and equinoxes. Solstices occur every year in June and December. They mark the beginning of summer and winter. At this time, the Earth is found to be tilted farthest towards or away from the sun.  The equinoxes occur in March and  September. On March 20th or 21st, the sun seems to be right above the equator and moving towards the north.

At the end of September, the sun passes the equator on its way to the south. Day and night have the same length almost all over the planet. The exact day and time of a season’s beginning always change a bit.

The change of seasons also has an effect on our weather. In June, the northern hemisphere is tilted towards the sun. The sun’s rays are more direct, and they do not have to travel so far to reach the surface. More radiation reaches the Earth. The days are longer and more light gets to the surface.T here it is changed to heat. At the same time, the southern hemisphere is tilted away from the sun. Rays have to travel longer to get to the surface and there are fewer hours of daylight.

Although June and December mark the official beginning of summer and winter, these months are not always the hottest and coldest of the year. Temperatures also depend on the heat that is absorbed and reflected by land and the oceans. In most cases, the hottest months in the northern hemisphere are July and August and coldest times of the year occur in January and February.

Seasons in Nepal and Other South Asian Countries

Broadly speaking, there are four main seasons in the Himalayan kingdom of Nepal -winter from December to February; pre-monsoon or summer season approximately from March to mid-June; monsoon season generally from mid-June to mid-September; and post-monsoon season generally from mid-September to November and post-monsoon season generally from mid-September to November.

During winter the belt of high pressure over Asia extends from Siberia to the outer fringes of the Himalayan massif, because of its height and extent, the Himalaya prevents from the spread of extremely cold air from the Central Asiatic region into north India. There are exceptions, however, and these associated with the passage of low-pressure systems from the year along the southern periphery of the Himalaya. On an over six to seven ‘western disturbances’ move across the Himalayan region every month in winter.   The onset of a   western disturbance is heralded by dense thunderclouds comparison by heavy rain or snow. In the wake of the disturbance, cold air often accompanied by strong winds. Sometimes clouds or thick fog envelops the valleys when a disturbance passes by, as the colder air in the rear undercuts the warm stagnant air in the valleys.

An interesting feature in the winter is narrow below strong winds or ‘jet streams’ which becomes evident in the upper atmosphere, with the wind blowing at speeds as great as km per hour or more. The winds in the upper levels generally westerly as stated earlier, increasing in force their height above the surface till about 10 km, and decreased in force aloft. When winds of this force strike the Himalayas (here is severe turbulence which is generally at its greatest the afternoon.

During the summer season, the belt of subtropical region pressure over Central Asia begins to weaken and the temperature begins to rise rapidly. In March and April western disturbance still occur but their frequency falls to three or four per month and they are less severe. With clearer skies and the apparent northward movement of the sun, the mountain slopes recent greater amounts of solar radiation and avalanches because frequent. From the second half of April to the end of mid-afternoon thunderstorms with occasional hail are a comfort feature. The upper winds are diffused and generally weather towards the end of May or early June.

The monsoon bursts over the eastern part of the Himalaya in the first week of June and, deflected by the mountains move westward, extending over the region by the end of July; it persists over the whole region until the end of September. The monsoon is not usually a period of continuous rain. There are spells of intense rainfall separated by periods of comparatively dry weather. Generally, one can discern a line of transition Zone, which separates the fresh south-westerly monsoon air from the colder air which is deflected by the Himalaya into an easterly branch. The line of demarcation called the ‘axis of the monsoon trough’ is not stationary but fluctuates, exhibiting marked movements to the north and south. Whenever it moves north and aligns itself close to the southern periphery of the Himalaya, there is a spell of heavy rain over the eastern mountain ranges, although the rest of India is comparatively free from rain at the time. The duration of such spells is generally three days and on rare occasions longer.

Another feature which causes much of the monsoon rain over the Himalaya is the low-pressure system in the North Bay of Bengal. They are called depressions or cyclones depending on their intensity. During the monsoon season they usually move inland, initially in a north-westerly direction from the Bay of Bengal, but later re-curve towards the north or north-east. The passage of a depression is invariably associated with a spell of heavy rainfall at lower altitudes and snow at high altitudes, for periods of three to five days.

The post-monsoon period is usually one of fair weather, except for depressions or cyclones which sometimes affect the eastern Himalaya in October. The upper winds which were easterly during the monsoon now change to westerly, increasing in strength as the season advances, and western disturbance begins to affect the western Himalaya again.

The inner ranges of the Himalaya and probably all the highest parts of the chain derive the greatest part of their annual snowfall from western disturbances. In October and May the western Himalaya and Karakoram’s, but from December to November it shifts further south. In November and December there many more clouds without much rain. In March and April with increasing heat of the sun, a local convection effect is added more thunderstorms, hail storms and occasionally tornadoes of their passage.

to be continued…

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