Global Warming Essay: Example and Tips

Example of introduction of global warming essay. Defining global warming and its causes

What is Global Warming? Global warming is a slow and gradual increase in the average temperature on our planet, which is currently observed. Global warming is a fact, which is why it is necessary to approach it comprehensively soberly and objectively.

According to scientific data, global warming can be caused by many factors:

• eruptions of volcanoes;
• behavior of the World Ocean (typhoons, hurricanes, etc.);
• solar activity;
• magnetic field of the Earth;
• human activity. So-called anthropogenic factor. The idea is supported by most scholars, NGOs and the media.

Most likely, it turns out that each of these components contributes to global warming.

What facts prove global warming? Global warming of the climate and the effects of warming are:

• Temperature rise

The temperature is documented for about 150 years. It is commonly believed that it has risen somewhere at 0.6 ° C during the last century, although there is still no clear method for determining this parameter; there is no certainty as to the adequacy of the data one hundred years ago. It is said that the warming has been increasing sharply since 1976, when there began a violent industrial activity of man and maximal acceleration reached its peak in the second half of the 90’s. But there are also discrepancies between terrestrial and satellite observations.

• Lifting the level of the world ocean

As a result of the warming and melting of glaciers in the Arctic, Antarctica and Greenland, the water level on the planet has risen by 10-20 cm, perhaps more.

• Melting glaciers

Well, what you say, global warming really is the cause of the melting of glaciers.

First part of global warming essay example. What is greenhouse effect?

The greenhouse effect was observed by any of us. In greenhouses, the temperature is always higher than outside. The same effect is observed in a closed car on a sunny day. All over the globe. The part of the solar heat obtained by the Earth’s surface can not be exhausted back into space, since the atmosphere acts on the similarity of polyethylene in the greenhouse. Without the greenhouse effect, the average temperature of the Earth’s surface should be about -18 ° C, and in fact it is around + 14 ° C. How much heat remains on the planet depends directly on the composition of the air, which changes exactly as a result of the above-described factors. The content of greenhouse gases is changing, which includes water vapor (responsible for more than 60% of the effect), carbon dioxide, methane (which causes the most warming) and a number of others.

Coal power plants, car exhaust pipes, factory pipes and other sources of pollution created by humankind together throw into the atmosphere about 22 billion tons of carbon dioxide and other greenhouse gases per year. Livestock, fertilizer application, coal combustion and other sources give about 250 million tons of methane a year. About half of all greenhouse gases emitted by humankind remain in the atmosphere. About three-quarters of all anthropogenic emissions of greenhouse gases over the past 20 years have been caused by the use of oil, natural gas and coal. Most of the rest is caused by changes in the landscape, primarily by felling of forests.

Second part of global warming essay example. Predicting and fighting global warming

Global warming and its development are predicted mainly by computer models, based on collected data on temperature, carbon dioxide concentration and much more. Of course, the accuracy of such predictions is not hundred percent, as a rule, does not exceed 50%, and the more the scientists swoop, the less the probability of the prediction becomes.

Also, super-deep drilling of glaciers is used to obtain data, sometimes samples are taken from a depth of up to 3000 meters. This ancient ice keeps information on the temperature, solar activity, intensity of the magnetic field of the Earth of that time. The information is used for comparison with the indicators of the present time.

What measures are taken to stop global warming?

A broad consensus among climatologists about the continued growth of global temperatures has led to a number of states, corporations and individuals trying to prevent global warming. Many environmental organizations advocate for action against climate change, mainly by consumers, but also at the municipal, regional and governmental levels. Some also advocate limiting the global production of fossil fuels, citing a direct link between fuel combustion and CO2 emissions.

To date, the main global agreement on combating global warming is the Kyoto Protocol (agreed in 1997, entered into force in 2005), an addition to the United Nations Framework Convention on Climate Change. The protocol covers more than 160 countries and covers about 55% of global greenhouse gas emissions.

The European Union should reduce emissions of CO2 and other greenhouse gases by 8%, the United States – by 7%, Japan – by 6%. Thus, it is assumed that the main objective – reducing greenhouse gas emissions by the next 15 years by 5% – will be fulfilled. But this will not stop global warming, but only slightly slows its growth. And this is at best case scenario. So, we can conclude that serious measures to prevent global warming are not considered and are not accepted.

Third part of global warming essay example. Numbers and facts of global warming

One of the most visible processes associated with global warming is melting glaciers. Over the last half century, the temperature in the southwest Antarctic, on the Antarctic Peninsula, has increased by 2.5 ° C. In 2002, an iceberg with an area of ​​over 2500 km was broken off by the 3250-km-long Larsen shelf glacier and over 200 meters thick, located on the Antarctic Peninsula, which in fact means the destruction of the glacier. The entire destruction process took only 35 days. Prior to that, the glacier remained stable for 10,000 years, from the end of the last glacial period. For millennia, the glacier power was gradually decreasing, but in the second half of the twentieth century, its melting speed increased significantly. The melting of the glacier led to the release of a large number of icebergs (over a thousand) in the Waddell Sea.

Other glaciers are also destroyed. Thus, in the summer of 2007, an iceberg with a length of 200 km and a width of 30 km broken off from the shelf glacier of Ross; somewhat earlier, in the spring of 2007, the ice field, 270 km long and 40 km wide, broke off the Antarctic continent. The cluster of icebergs prevents the release of cold waters from the Ross Sea, which leads to a disturbance of the ecological balance (one consequence, for example, is the death of penguins who lost the opportunity to get to the usual sources of food because the ice in the sea of ​​Ross lasted longer than usual).

The acceleration of the permafrost degradation process is noted. Since the beginning of the 1970s, the temperature of perennial soils in Western Siberia increased by 1.0 ° C, in central Yakutia – by 1-1.5 ° C. In the north of Alaska, from the mid-1980s, the temperature of the upper layer of dead wood increased by 3 ° C.

Fourth part of global warming essay example. What effect will global warming have on the world?

1. Without a doubt, global warming will strongly affect the lives of some animals. For example, white bears, seals and penguins will be forced to change their habitat, as the current ones simply melt. Many species of animals and plants may simply disappear without adapting to a rapidly changing habitat.
2. It will modify the weather on a global scale:

• the number of climatic cataclysms is expected to increase;
• longer periods of extreme hot weather;
• there will be more rains, at the same time the probability of drought will increase in many regions;
• increase in the number of floods due to hurricanes and rising sea levels. But it all depends on the specific region.

The report of the working group of the intergovernmental commission on climate presents seven models of climate change in the twenty-first century. The main conclusions of the report are:

• the continuation of global warming accompanied by an increase in greenhouse gas emissions (although according to some scenarios, by the end of the century, as a result of the prohibition of industrial emissions, a reduction in greenhouse gas emissions can be expected);
• the growth of the surface air temperature (by the end of the 21st century, it is possible that the surface temperature increases by 6 ° C);
• increase in the level of the ocean (on average – by 0.5 m per century).

The most probable changes in weather factors include more intense precipitation; higher maximum temperatures, an increase in the number of hot days and a decrease in the number of frosty days in almost all regions of the earth; in the majority of continental regions, the waves of heat will become more frequent; reduction of temperature dispersion.

As a consequence of the above changes, one can expect increased winds and an increase in the intensity of tropical cyclones (the general tendency to increase was noted in the XX century), an increase in the frequency of strong precipitation, a noticeable expansion of drought areas.

The Intergovernmental Commission has identified a number of areas most vulnerable to the expected climate change. These are the area of ​​the Sahara, the Arctic, the mega-delta of Asia, small islands.

Negative changes in Europe include increased temperatures and increased drought in the south (as a result – reduced water resources and reduced hydroelectricity production, reduced production of agriculture, deterioration of tourism conditions), reduced snow cover and retreat of mountain glaciers, increased risk of severe floods and catastrophic floods on the rivers; the increase of summer rainfall in Central and Eastern Europe, the increase in the frequency of forest fires, fires in peatlands, the reduction of forest productivity; increasing instability of soils in northern Europe. In the Arctic, a catastrophic decrease in the area of ​​ glaciation cover, a decrease in the area of ​​sea ice, and an increase in coastal erosion.

Some researchers (for example, P. Schwarz and D. Randell) offer a pessimistic prognosis, according to which already in the first quarter of the XXI century a sudden climb of the climate can occur in an unplanned direction, and the consequence may be the onset of a new glacial period of hundreds of years.

Example of conclusion of global warming essay. How will global warming affect people?

Scientists predict the shortage of drinking water, the growing number of infectious diseases, problems in agriculture due to drought. But in the long run, nothing else but human evolution awaits. Our ancestors faced a more serious problem, when after the end of the glacial period the temperature rose sharply at 10 ° С, but this led to the creation of our civilization. Or it would still be possible to hunt mammoths with spears.

Of course, this is not the reason to contaminate the atmosphere than it hurts, because in the short term we will have to worry. Global warming is a matter in which you must follow the call of common sense, logic, not to fall into cheap bikes and not to go to the majority. History knows a lot of examples, when the majority is very deeply mistaken and causes a lot of troubles, up to the burning of great conditions, which eventually turn out to be right.

Global warming is a modern theory of relativity, the law of universal gravitation, the fact of the Earth’s rotation around the Sun, the sphericality of our planet during their passing to the public court, when opinions were also divided. Someone is exactly right. But who is that?