Likewise, if humans have caused the global warming but it will not have a negative impact on climate and life, no action is necessary. But there is one other dimension to choosing what to do: Let us take the Kyoto Protocol as an example. President Clinton signed it on November 12, , but he is waiting to give it to the Senate. The costs of this mandatory decrease in emissions are substantial. Gas prices are expected to increase by 65 cents a gallon or more.
Residents of Michigan are expected to have to pay Industries and businesses will suffer. It is thought that some of the hardest hit sectors will include energy-intensive manufacturing such as automobiles, cement, iron, steel, chemicals, aluminum, etc. Wages and salaries would fall, while food, housing, and medical costs rose. It is expected that the jobless rate would reach 5. This would be a grim picture if these changes were known to be necessary for survival.
But a far grimmer picture is one of going through all this economic hardship for an unproven theory, and then potentially discovering that these costly changes really had a negligible effect upon climate and life as a whole. It also seems a bit funny that only a fast-growing, prosperous society would best be able to afford the extra technology to make itself cleaner, healthier, and safer, but this treaty would certainly not have that effect upon the US economy.
In not sanctioning developing countries, Kyoto almost encourages industry to move from the reasonably efficient and well-regulated developed countries to the developing countries, which have few if any regulations on pollution. There is international scientific consensus that most of the warming over the last 50 years is due to human activities, not natural causes.
Over millions of years, animals and plants lived, died and were compressed to form huge deposits of oil, gas and coal. In little more than years, however, we have burned a large amount of this storehouse of carbon to supply energy. Today, the by-products of fossil fuel use — billions of tons of carbon in the form of carbon dioxide , methane, and other greenhouse gases — form a blanket around the Earth, trapping heat from the sun, unnaturally raising temperatures on the ground, and steadily changing our climate.
The impacts associated with this deceptively small change in temperature are evident in all corners of the globe. There is heavier rainfall in some areas, and droughts in others. Glaciers are melting, Spring is arriving earlier, oceans are warming, and coral reefs are dying. The Intergovernmental Panel on Climate Change predicts an increase in the global average temperature of only 1.
This small change, less than the current daily temperature range for most major cities, is hardly cause for concern. Global average temperature is calculated from temperature readings around the Earth.
While temperature does vary considerably at a daily level in any one place, global average temperature is remarkably constant. A global average temperature change ranging from 1. From scientific analyses of past ages, we know that even small global average temperature changes can lead to large climate shifts.
Warming cannot be due to greenhouse gases, since changes in temperature and changes in greenhouse gas emissions over the past century did not occur simultaneously. The slow heating of the oceans creates a significant time lag between when carbon dioxide and other greenhouse gases are emitted into the atmosphere and when changes in temperature occur.
You can see the same process occur in miniature when you heat up a pot of water on the stove: Therefore, you would not expect the build-up of greenhouse gases to exactly match trends in global climate. Still, scientific evidence points clearly to anthropogenic or human-made greenhouse gases as the main culprit for climate change.
Carbon dioxide is removed from the atmosphere fairly quickly, so if global warming turns out to be a problem, we can wait to take action to reduce greenhouse gas emissions until after we start to see the impacts of warming.
Carbon dioxide, a gas created by the burning of fossil fuels like gasoline and coal , is the most important human-made greenhouse gas. Carbon dioxide from fossil fuel use is produced in huge quantities and can persist in our atmosphere for as long as years.
This means that if emissions of carbon dioxide were halted today, it would take centuries for the amount of carbon dioxide now in the atmosphere to come down to what it was in pre-industrial times. Thus we need to act now if we want to avoid the increasingly dangerous consequences of climate change in the future.
Human activities contribute only a small fraction of carbon dioxide emissions, an amount too small to have a significant effect on climate, particularly since the oceans absorb most of the extra carbon dioxide emissions. Before human activities began to dramatically increase carbon dioxide levels in the atmosphere, the amount of carbon dioxide emitted from natural sources closely matched the amount that was stored or absorbed through natural processes. For example, as forests grow, they absorb carbon dioxide from the atmosphere through photosynthesis; this carbon is then sequestered in wood, leaves, roots and soil.
Some carbon is later released back to the atmosphere when leaves, roots and wood die and decay. The plankton and animals that eat the plankton then die and fall to the bottom of the ocean. As they decay, carbon dioxide is released into the water and returns to the surface via ocean currents. As a result of these natural cycles, the amount of carbon dioxide in the air had changed very little for 10, years. But that balance has been upset by man. Since the Industrial Revolution, the burning of fossil fuels such as coal and oil has put about twice as much carbon dioxide into the atmosphere than is naturally removed by the oceans and forests.
This has resulted in carbon dioxide levels building up in the atmosphere. The Earth has warmed rapidly in the past without dire consequences, so society and ecosystems can adapt readily to any foreseeable warming. The Earth experienced rapid warming in some places at the end of the last glacial period, but for the last 10, years our global climate has been relatively stable. Now, many heavily populated areas, such as urban centers in low-lying coastal zones, are highly vulnerable to climate shifts.
In addition, many ecosystems and species that are already threatened by existing pressures such as pollution, habitat conversion and degradation may be further pressured to the point of extinction by a changing climate. Carbon dioxide has been shown to act as a fertilizer for some plant species under some conditions. In addition, a longer growing season due to warmer temperatures could increase productivity in some regions.
However, there is also evidence that plants can acclimatize to higher carbon dioxide levels — that means plants may grow faster for only a short time before returning to previous levels of growth.
Another problem is that many of the studies in which plant growth increased due to carbon dioxide fertilization were done in greenhouses where other nutrients, which plants need to survive, were adequately supplied. In nature, plant nutrients like nitrogen as well as water are often in short supply. Thus, even if plants have extra carbon dioxide available, their growth might be limited by a lack of water and nutrients.
Finally, climate change itself could lead to decreased plant growth in many areas because of increased drought, flooding and heat waves. Whatever benefit carbon dioxide fertilization may bring, it is unlikely to be anywhere near enough to counteract the adverse impacts of a rapidly changing climate. If Earth has warmed since pre-industrial times, it is because the intensity of the sun has increased.
It is hard enough to predict the weather a few days in advance. How can we have any confidence in projections of climate a hundred years from now? Climate and weather are different. Weather refers to temperatures, precipitation and storms on a given day at a particular place.
Climate reflects a long-term average, sometimes over a very large area, such as a continent or even the entire Earth. Averages over large areas and periods of time are easier to estimate than the specific characteristics of weather.
For example, although it is notoriously difficult to predict if it will rain or the exact temperature of any particular day at a specific location, we can predict with relative certainty that on average, in the Northeastern United States, it will be colder in December than in July.
In addition, climate models are now sophisticated enough to be able to recreate past climates, including climate change over the last hundred years. This adds to our confidence that projections of future climates are accurate. The science of global climate change cannot tell us the amount by which man-made emissions of greenhouse gases should be reduced in order to slow global warming. This study projects that if C02 concentrations are capped at parts per million ppm , major disruptions to climate systems may be avoided, although some damage such as that to coral reefs may be unavoidable.
Current estimates of atmospheric CO2 concentrations likely to be reached without aggressive action to limit greenhouse gas emissions are far higher — from ppm to as much as ppm in the next hundred years.
Because of the uncertainty of climate models, it is extremely difficult to predict exactly what regional impacts will result from global climate change. According to the IPCC, certain climate trends are highly likely to occur if greenhouse gas emissions continue at their current rate or increase: Regional impacts are very likely to occur, but exactly when and what they will be is harder to predict.
For example, the risk of mosquito-borne illnesses like Dengue fever and malaria may rise due to increased temperatures, but the actual likelihood of infection will depend greatly on the effectiveness of public health measures in place. A Better World Climate: As has been stated previously, there are a great many unanswered questions about global warming. Therefore, the research that should be first and foremost in our minds is that to better understand the rich interrelationships between these bodies as well as the various features of each that may not be well understood.
The effect of clouds, for example, on warming and vice versa are not understood very well. Our planet is made up of many different climate zones that are located in different parts of the world and climate is the main reason why we have different areas such as rainforests and desserts.
Australia and Northern Brazil are good examples of The Hadley Cell as shown below demonstrates how the three different climate types around the tropics are created from the high and low pressure in the area. On either side of the equator the pressure is low and the air is rising due to the heat. This causes humid conditions with a lot of rain Clouds can always be seen from the satellite map and Write in your own words a short answer that describes the differences between weather and climate.
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It is interesting that we still think global warming is manmade even when scholars like Dennis T. Avery, director for the Global Center Issues, have made their point very clear about how Global Warming is a natural cycle that has been present on Earth since the beginning of its existence where temperatures rise and then fall over a course of years.
Jun 26, · Essay on GLOBAL WARMING – Fact or Fiction Introduction to Global Warming: Greenhouse warming has existed for quite some time, arguably since Earth was first formed.
Global Warming Essay: Facts about Global Warming Spread Environmental Awareness and Encourage Fight against Global Warming Through Your Global Warming Essay The definition of Global warming is, “The observed and projected increase in the average temperature of Earth’s atmosphere and oceans”. Human actions, primarily the release of green. What is global warming? Global warming is the common scientific belief which states that man is producing greater and greater amounts of "Green House Gasses" such as carbon dioxide and methane, which trap the suns heat inside our atmosphere, heating up the planet to dangerous levels/5(5).
Global Warming: Fact Vs. Fiction Essay Words | 7 Pages. Global Warming: Fact Vs. Fiction Global Warming -- the gradual increase in planet-wide temperatures -- seems to be accepted by many scientists and people now as fact. Global warming developed through the increased emissions of the noxious greenhouse gases resulting in an increase on the temperature of the earth’s surface (SciDev. Net). Global warming renders a variety of changes that affects the environment and the quality of life.