The global weather system with its phenomenal rotational changes in each and every inhabited as well as uninhabited place is the most precious gift of the nature to mankind
During past few years the weather around the world has been witnessing major changes, which has adversely affected the nature and character of various seasons. Thus the natural weather system has got sort of disorganized and is not following its natural characteristicconformation of the seasons, be it summer or autumn, spring or winter or rains or snow fall or the pattern of other natural activates related to climate of respective seasons. We have been witnessing the changes in the weather patterns in our own valley as well. The seasons are now usually delayed or advanced, harsh or very soft, prolonged or short, much contrary to their normal natural course. Although the nature follows its own manual of maintaining the weather system, the changes taking place are more than visible and are affecting our routine lives. For example this year we had a prolonged severe winter followed by a very brief spring and now we are witnessing a stretched harsh summer with the scorching sun refusing to soften up. There have been no rains for the past more than two months, which the experts say, is not normal with the valley weather and the phenomenon has occurred after several decades.
The global weather system with its phenomenal rotational changes in each and every inhabited as well as uninhabited place is the most precious gift of the nature to mankind. Such is the formation of this weather system that the terrestrial ecosystem cannot function without it. The life on the earth and the peripheral activities are directly linked with every particular season of this weather system.
Most of the countries all over the worldincluding India follow the international standard of four seasons with some local adjustments owing to the respective geographical character like altitude, latitude, and distance from the sea level. Each season has its pattern with varying hours and intensity of sunlight during the days.In India we have winterin Jan Feb, springin MarchApril,summerfollowed by Monsoon from May to September, and autumnfrom mid Oct to Dec. Here also we have regional variations which are reflected by varied intensity of heat, cold, rainfall and snowfall and durations of each season.
The seasonality across the places we live in offer us varied aspects of beauties of nature, like the fragrances of flowers, the prominence of snow-clad mountains, never ending enormity of glaciers and the graceful flow of brooks and streams. However with the natural patternsof eco systembeing routinely disturbed, we may not be able to experience such bounties of nature in future as we now face severe situations of extreme heat, heavy rainfalls or little rainfall, drought, excessive or very little snowfall and abnormal intensity of various seasons which are killing the characteristic beauty of every season.
Variations in extreme weather and climate events, such as heat waves and droughts, are the primary way that we experience climate change. These climate changes have already increased the number and strength of some of these extreme events. Over the last couple of decades, world has seen rise in prolonged periods of excessively high temperatures, heavy rainfalls, as also severe floods and droughts. This trend has continued in recent years, with the instances of intense weather being almost seen all over. In the opinion of the experts, the world has progressively warmed up and the warming has resulted in many other changes to the earth’s climate.
The changes in global seasonality is attributed to a phenomenon called globalwarming whichhas caused the increase in global temperature at a steady rate in recent history.Experts opine that the trend is accelerating and that unless the mankindputs efforts to check the phenomenon, average global temperatures could increase by up to 10 degrees Fahrenheit over the next century.
Global warming is the result of carbon dioxide (CO2) and other air pollutants and greenhouse gases getting collected in the atmosphere, which in turn absorb sunlight and solar radiation that is reflected off the earth’s surface. Normally, these radiations as well as other human caused industrial emissions would escape into space and disappear into the vastness of nature. But these pollutants, which can last for years to centuries in the atmosphere, trap the heat and cause the planet to get hotter. That's what's known as the greenhouse effect.Around the world the burning of fossil fuels to make electricity in order run the industrialized and modernized lifesystem is the largest source of heat trapping pollution and pollutants, producing billions of tons of Carbon Dioxide every year.
Coal-burning power plants and the transportation industry are other big pollution makers of the world, choking the atmosphere with heavy loads of pollutants, mainly carbon dioxide. In addition to Carbon Dioxide, Methane and water vapor are other important greenhouse gases, which have the property of absorbing infrared radiation or net heat energy emitted from earth's surface and reradiating it back. Carbon dioxide (CO2) and other greenhouse gases act like a blanket, absorbing lethal infrared radiation and preventing it from escaping into outer space. The net effect is the gradual heating of earth's atmosphere and surface, a process known as global warming. Though the earth’s temperature fluctuates over long periods of time (hundreds to thousands of years), the term global warming most commonly refers to the rising temperatures brought on by human activities owing to intense industry progress and mechanized life.
There are three major ways in which global warming has a potential of making changes to world climate: melting or forming ice, affecting the balance of hydrological cycle of evaporation and precipitation, changing currents in the oceans and air flow in the atmosphere.The net result is an anomalous effect on the weather conditions and the seasonality thus disturbing normal cycle of life.
As the earth warms, the melt line moves upwards so that the glacier melts faster and faster at the bottom, shortening the glacier and reducing its mass. Ultimately, the melted water flows into streams and rivers and ends up in the oceans, contributing to accelerating sea level rise. Consequently, as the experts predicted, glaciers are vanishing due to rapidly warming temperatures
The excessive and unnatural melting of glaciers affects downstream water levels, river flow rates, and the water available for human use. It is important to ponder over what will happen to the human race with glaciers melting away in the future leaving mankind high and dry.
As per a study, in Alaska, “the amount of water melt currently is 60 times greater than it was prior to 1850.The reason it warms so fast in these locations is that as the warming starts, snow begins to melt, exposing dark soil, which absorbs more sunlight, leading to more warming. This could become the fate of all the glaciers around the world as well”.
However, Global warming is only one aspect of the broader phenomenon of climate change, referring to a steady and consistent rise in global temperatures. While climate change includes rising global temperatures, it also comprises of many other adverse those greenhouse gases are having on the planet, which even includes some regions getting colder.
There is no doubt that that the world has acknowledged and taken up the problem seriously.However action plans need to go beyond mere discussions in the conference halls. The worst enemy, Carbon Dioxide is identified. Its relentless release into the atmosphere has to be stopped. Burning of oil, coal and other fossil fuels to generate energy may be justified for development, but we have to put an end to our intense greed for luxury and comforts, which consume huge quantum of this energy.By using less of it, we can curb our own contribution to climate degradation.We must prioritize our resolve to reduce our dependence on fossil fuels and switching to renewable sources of energy like solar or wind power. We must also put an end to wide-scale deforestation, a major global contributor to CO2 emissions. Then only we may be able to leave this earth a better place to live for future generations.