The burning of these fuels produces gases like carbon dioxide, methane and nitrous oxides which lead to global warming. Epidemiologists have noted that more lives will be saved from reduced cold than will be lost to increased warmth. Notes many of my students require written copies of the notes i write on the board. Introduction teacher will introduce the concept of field notes, whereby students will record observations of phenomena assigned by. Many sources suggest that cities are responsible for 7580 per cent of all such emissions. As global warming progresses, natural resources will be further depleted, and there will be risks of wildlife extinctions, melting of the polar ice caps, coral bleaching and disintegration, floods and droughts, disease, economic disaster, sea level rise, population risks, unsustainable land, and more. Nations must raise the price of co2 and other greenhousegas emissions. The carbon cycle describes the reservoirs of carbon atmosphere, terrestrial biomass and ocean and the exchanges that occur between these reservoirs.
A greenhouse or a farm house is a very big enclosure for the plants in a farm to save them from an extremely cold temperature in winter. By the 1930s, global warming was already a reality although most scientists invoked some natural cycle. In fact, an in crease in average global temperature will also cause the circulation of the atmosphere to change, resulting in some areas of. This involves intensive research and resisting false and tendentious reasoning. The only quantitative and internally consistent explanation for the recent global warming includes the intensified greenhouse effect caused by. People must understand the gravity of global warming. This paper suggests that the contribution of cities to global anthropogenic greenhouse gas emissions is often overstated. Fossil fuels are being continuously used to produce electricity. The effects of global warming or climate damage include farreaching and longlasting changes to the natural environment, to ecosystems and human societies caused directly or indirectly by human emissions of greenhouse gases. In 2001 an international panel of distinguished climate scientists announced that the world was warming at a rate without precedent during at least the last two millennia, and that warming was caused by the. Carbon monoxide emissions created by deforestation and burning fossil fuels create a barrier that traps the suns heat on the earth causing the planet to warm up. Global warming questions and answers discover the community of teachers, mentors and students just like you that can answer any question you might have on global warming. Fewer algae is a problem because there is less food for us and many animals in the sea.
The atmospheric concentrations of several greenhouse gases are increasing due to human activities. Global temperature over the past 65 million years present 1,000 ya 65 mya mya 18,000 years 230,000 years 1 million years 3. The effects of global warming include rising sea levels, regional changes in precipitation, more frequent extreme weather events such as heat waves, and expansion of deserts. An introduction to global warming for students in grades 68. The study report on the greenhouse gases and their impact on global warming. It is directly linked to the increase of greenhouse gases in our atmosphere, worsening the greenhouse effect. Note that alaska and hawaii are not included in the 19012016 maps owing to a lack of observations in the earlier part of the 20th century. Dr mercure and his colleagues offer modelled outputs to suggest that fossil fuel demand will fall sharply on the basis of. Since 1880, the earths temperature has increased by 1.
Powerpoint global warming pemanasan global fisika kelas xi. The best hope for effective coordination is a climate club. Global warming is already changing the environment, the economy, and peoples ways of living. The wri report is entirely designed to blame developing countries for sharing the responsibility for global warming.
Global warming this term refers to the general increase in the earths average temperature caused by the presence of greenhouse gases in the atmosphere, which causes changes in climate patterns across the globe. Global warming, is harming and killing algae in the ocean. Climate change deniers have argued that there has been a pause or a slowdown in rising global temperatures, but several recent studies. Global warming 101 definition, facts, causes and effects of. Atmospheric co2 concentration and global mean temperature increase with the rapid increase of co2 emission. Global warming is, itself, the product of many factors, and its. The accumulation in the earths atmosphere of these gases is mainly the result of the gargantuan consumption of the developed countries, particularly the united states. Global warming and the sweetness of life the mit press. What well pay if global warming continues unchecked ii about nrdc nrdc natural resources defense council is a national nonprofit environmental organization with. Global warming is real ben bova global warming is a myth edmund contoski global warming is a getrich scam michael reagan the media are silencing the views of global warming deniers brendan oneill science disproves the claims of global warming deniers joseph romm the earths climate is cooling, not warming deroy. Earths natural greenhouse effect is critical to supporting life, and initially was a precursor to life moving out of the ocean onto land. Insect borne disease specialists note that diseases like malaria were once endemic to siberia. Global warming 8additional resources additional resources include.
Proxy measurements tree rings, sediments etc for the past years weather balloons radiosondes for the past 44 years satellites msu units for the past 21 years. This article discusses amongst cause of global warming and consequences of global warming. Global warming refers to the gradual increase in the temperature of the earths surface, atmosphere and oceans as a result of greenhouse gases. In 2014 the ipcc reported that concentrations of carbon dioxide, methane. Global warming has led to an incredible increase in earths temperature. Presentasi global warming pemanasan global ipa fisika kelas xi dibuat oleh. Global warming notes background section explain the overall process of global warming. Explain historical temperature changes how many ice ages have we had. The report argues that the average rate of global warming should be limited, as closely as possible, to 0.
Find materials for this course in the pages linked along the left. Global climate change scientific research publishing. Modern global warming is the result of an increase in magnitude of the socalled greenhouse effect, a warming of earths surface and lower atmosphere caused by the presence of water vapour, carbon dioxide, methane, nitrous oxides, and other greenhouse gases. Atmospheric co2 concentration and global mean temperature. The changes arent over, either, and the more that changes around the world, the more critical it is to understand this complex and important issue. I also note that other eminent experts, including dr malte meinshausen. Without the greenhouse effect the earths average global temperature would be much colder and life on earth as we know it would be impossible. The cause of global warming executive summary three of the four methods of measuring global temperature show no signs of global warming. In the long list of potential problems from global warming, the risks to world agriculture stand out as among the most important.
The greenhouse is covered with a kind of plastic walls which permits all radiations from the sun. Some of the news you may have heard polar bears are losing. Global warming is melting glaciers in every region of the world, putting millions of people at risk from floods, droughts and lack of drinking water. It also includes the economic and social changes which stem from living in a warmer world. Global warming is the temperature of earths surface, oceans and atmosphere going up over tens of years. I have left these notes in a word document so that you may edit as needed.
Global warming is often misunderstood to imply that the world will warm uniformly. Global warming solutions that work environment america. Lecture 28 global warming 1 lecture 28 global warming 2010 tied for the warmest year on record nasa. Fossil fuel consumption is increasing rapidly to satisfy growing energy demand after the industrial revolution, which started at the end of the 18th century. Cause of global warming fossil fuel consumption is increasing rapidly to satisfy growing energy demand after the industrial revolution, which started at the end of the 18th century. We often call the result global warming, but it is causing a set of changes to the earths climate, or longterm weather. Yet there has been a tendency in the climate economics literature in recent years to downplay this risk, and even to argue that a couple of degrees celsius warming might benefit.
But in some parts of the world it is less than this and some more. At the end of the executive summary and in chapter 1. Human activities, however, mainly the burning of fossil fuels and clearcutting of forests, have accelerated the greenhouse effect and caused global warming. Gg 140 lecture 27 global warming open yale courses. Naomi oreskes in december 2004, discover magazine ran an article on the top science stories of the year. There is a natural atmospheric greenhouse effect on earth which keeps the average surface temperature about 59. Jy tsao some simple physics of global warming 2008 april sandia is a multiprogram laboratory operated by sandia corporation, a lockheed martin company, for the united states department of energys national security administration under contract deac0494al85000. Nasa 3 heat wave down under a temperature map of australia shows expected temperatures.
One thing that causes global warming is electrical pollution, fossil fuels are burned to create electricity. Confounded by global warming and in search of an affirmative politics that links ecology with social change, matt hern and am johal set off on a series of road trips to the tar sands of northern albertaperhaps the worlds largest industrial site, dedicated to the dirty work of extracting oil from albertas vast reserves. Global warming is the rise in temperature of the earths. Global warming as well as global cooling refers specifically to any change in the global average surface tem perature. Policies must be global and not just national or local. The global climate has always varied for many reasons, such as interactions between components in the climate system oceans, atmosphere, ice sheets, etc. The lower layers of earths atmosphere will slowly and. This could have devastating effects on coastal regions. Pdf global warming is now becoming a challenge for survival of species on earth and draws attention of many modern societies, power and. This has resulted in an increase in melting of glaciers which have led to an increase in the sea levels.
Tatinia arda rizqi amalia xi mia 5 32 wisnu murti suradilaya xi mia 5 35 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. This article discusses amongst cause of global warming and consequences of global warming on the environment. Since preindustrial times, global average temperatures have increased by about 0. Recent climate change over the last half of the 20 th century is thought to be driven largely by greenhouse gas emissions, with carbon dioxide playing a large role. Deforestation, fossil fuels, greenhouse effect, melting glaciers, and salinity of ocean water. Global warming is a phenomenon of climate change characterized by a general increase in average temperatures of the earth, which modifies the weather balances and ecosystems for a long time. One of these was climate change, and the story was the emergence of a scienti.
It is a complex issue full of uncertainties and controversies. Many researchers, engineers and environmentalists are expressing deep concerns about changes in the overall climate of the planet. Lecture 28 global warming lecture 28 global warming. Ocean acidification is also caused by greenhouse gas emissions and is commonly grouped with these effects even though it is not driven by temperature. What are the major greenhouse gases and where do they come from. Most scientists working on hurricanes agree that katrina cannot be attributed to global warming. Global warming policy foundation models of stranded fossil fuel assets cannot be trusted the gwpf is today publishing a brief comment on the recent and much publicised paper in nature climate change by j.
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