Global warming is when the earth heats up and the temperature increases more recently, the temperatures have been rising, causing more dangers for people, animals, plants and our environment. And a collective attitude change to focus on dealing with global warming as a global problem that needs a collective global solution. Greenhouse gases absorbs infrared radiation balance of energy of planet gets damage and along with this, there will be a. By the 1930s, global warming was already a reality although most scientists invoked some natural cycle. Above all, alternative energy sources solar, wind, hydro, geothermal, bio mass need to be seriously pursued. 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. However, global warming was caused by carbon dioxide pollution in the atmosphere, but global warming in itself isnt a pollution. Briefing notes on climate science and climate change what do we mean by climate and climate change. Earths climate has changed over various timescales since the dawn of geologic time, and the force of human activities since the industrial revolution has been woven into the fabric of climate change. Nasa 3 heat wave down under a temperature map of australia shows expected temperatures. Lecture 28 global warming lecture 28 global warming. The connections between the components are weak to the point of nonexistence.
Lecture notes global warming science earth, atmospheric. 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. Indicators have been selected to show global trends identified by the chapter 2 assessment. The lower layers of earths atmosphere will slowly and gradually warm up as a result of greenhouse gases and man mad. Global warming and its impact global warming is the slow increase in the average temperature of the earths atmosphere because an increased amount of the energy heat striking the earth from the sun is being trapped in the atmosphere and not radiated out into space. The greenhouse effect of earth from geometry, we can calculate the average solar flux at the top of the atmosphere. Pdf global warming is now becoming a challenge for survival of species on earth and draws attention of many modern societies, power and.
Global warming is the current increase in temperature of the earths surface both land and water as well as its atmosphere. They will answer questions on this article and fill in a graphic organizer. Global warmings increasingly visible impacts environmental. 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. Gg 140 lecture 27 global warming open yale courses. Learn resource guide for advanced learning on the scientific fundamentals of climate change 4 1. Average temperatures around the world have risen by 0. Notes many of my students require written copies of the notes i write on the board. This change has disturbed the climatic pattern of the earth. Global warming and climate change refer to an increase in average global temperatures. Some of the news you may have heard polar bears are losing. Sep, 2011 global warming is the rise in temperature of the earths atmosphere.
Todays global warming emergency is not a natural disaster. Global warming is already changing the environment, the economy, and peoples ways of living. Global warming solutions that work environment america. This article discusses amongst cause of global warming and consequences of global warming. This phenomenon has been observed over the past one or two centuries. There is a natural atmospheric greenhouse effect on earth which keeps the average surface temperature about 59. 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. Global warming in itself isnt pollution global warming is the gradual warming of the earth. 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. Global warming and the sweetness of life the mit press. Generally occur in areas with cold climates with low populations and they move slowly. Above all, alternative energy sources solar, wind, hydro, geothermal. Global warming is also linked to the stability of climate system and increase in frequency of extreme climatic events this applies to both, variability of tropical cyclones and hurricanes frequency and intensity of the caribbeans, as well as to the monsoon rains in asia climate change directly affects not only natural, but also the human. This is caused primarily by increases in greenhouse gases such as carbon dioxide co 2.
The way forward on global warming environment america. Earth is warmer than predicted based on distance from the sun and the amount of radiation reaching the earth. Seminars on science courses are asynchronous and designed around your busy schedule with 6 sessions offered every year. Melting glaciers, rising sea levels, warmer sea surface temperatures and habitat disruption are all consequences associated with global warming. The thicker absorption layer keeps the earth warmer. I have left these notes in a word document so that you may edit as needed. Mar 16, 2020 global warming, the phenomenon of rising average air temperatures near earths surface over the past 100 to 200 years. Scientists and kids explore global warming, lynne cherry fight global warming now. Leading scientist warns that computer simulations are unreliable a leading climatologist has said that the computer simulations that are used to predict global warming are failing on a key measure of the climate today, and cannot be trusted. Climate change is affecting both, overall parameters of the earth and changes in the earths biophysical systems such as nutrient cycling and flows etc.
Find materials for this course in the pages linked along the left. 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. Executive summary 1 executive summary g lobal warming is the. Co2 increase in the atmosphere thickens the infrared radiation absorption layer. It is a complex issue full of uncertainties and controversies. Seeking new definitions of ecology in the tar sands of northern alberta and searching for the sweetness of life in the face of planetary crises. The uk has had cold winters and poor summers weather is not climate and we must look at averages. In the 1970s the tundra was a carbon sink, but today, it is a carbon source, all because of global warming.
When the permafrost melts due to global warming, it releases carbon in the form of carbon dioxide and methane. Global warming, is harming and killing algae in the ocean. But expert analysts across the world found that wholesale adjustments had been made to the figures in the main surface temperature records, giving an impression that the global temperature trend had been rising much more than was justified by. However, some may dam streams or melt suddenly and cause flooding. Global temperature on both land and sea increased by 0. This article discusses amongst cause of global warming and consequences of global warming on the environment. Solar activity it is widely recognized that variations in solar radiation and activities, such as solar flares or sunspots, if large enough, could have an impact on the global temperature. Global warming occurs when carbon dioxide co2 and other air pollutants and greenhouse gases collect in the atmosphere and absorb. The paper introduces global warming, elaborates its causes and hazards and presents some solutions to solve this hot issue. Global warming refers to the gradual increase in the temperature of the earths surface, atmosphere and oceans as a result of greenhouse gases. Climate change, on the other hand, occurs because the amount of energy in the entire climate.
Volume of atmospheric carbon dioxide increased from 280 parts per million in 1800 to 367 in 2000, a 31% increase over 200 years our changing climate global mean surface. Global warming and its impact andhra pradesh pcs exam notes. 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. Apr 23, 2017 global warming ppt and pdf free to download. Generally, a physical property of the atmosphere of earth is referred by an expression called greenhouse effect. Global warming solutions that work cuttingedge efforts to curb global warming pollution and the lessons they hold for america environment america.
Global warming, however, is the equivalent of a greenhouse with high efficiency reflective glass installed the wrong way around. 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 a multifaceted phenomenon that will have severe consequences if current trends continue. Global warming may spawn more superstorms, inter press service ips notes. Without the greenhouse effect the earths average global temperature would be much colder and life on earth as we know. 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. Climate is the average of weather over time and across large regions, even the entire planet. Whether the cause is natural or humandriven, global warming is a serious issue that everyone should be aware of. A set of data and graphs, taken from nasas global warming key indicators website is shown to give a sense of the evidence behind our understanding of climate change. In recent past, global observations have provided clear evidence of climatic changes resulting from anthropogenic activities. Climate change and global warming introduction global issues. Greenhouse effect, global warming, carbon sequestration pmf ias. However, the concept of global warming is quite controversial.
What are the major greenhouse gases and where do they come from. A small increase in average global temperature will eventually create catastrophic change in the world. Natural events and human activities are believed to be contributing to an increase in average global temperatures. Global warming itself catastrophic climate alarmism climate mitigation policy each of these components is complex and uncertain.
Students will read an article on one effect of climate change global warming in small groups. Explain historical temperature changes how many ice ages have we had. 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. Global warmingclimate change causes, effects essay mcqs.
Hh and for h 2 with only two atoms, the atoms can only be arranged in a straight line. We often call the result global warming, but it is causing a set of changes to the earths climate, or longterm weather. Atmospheric co2 concentration and global mean temperature increase with the rapid increase of co2 emission. May 04, 2019 when the permafrost melts due to global warming, it releases carbon in the form of carbon dioxide and methane.
As global warming and climate destabilization continue, our local and national weather, as well as our global climate, will become much more unpredictable. Ionically, the best evidence of this may come from a terrible cooling event that took place some 1,500 years ago. Adapted for a new generation, al gore a downtoearth guide to global warming, laurie david and cambria gordon how do we know what we know about our changing climate. The carbon cycle describes the reservoirs of carbon atmosphere, terrestrial biomass and ocean and the exchanges that occur between these reservoirs. The wri report is entirely designed to blame developing countries for sharing the responsibility for global warming. However, it is characteristic of this topic to treat them all as equivalent. The way forward on global warming reducing carbon pollution today and restoring momentum for tomorrow by promoting clean energy volume 1. One vital dimension of dealing with global warming is the change needed in our psychological attitude towards accepting the reality of global warming as a present and future danger. Lecture 1 global warming greenhouse gas global warming. An increase in the average temperature of the earths atmosphere and oceans. The greenhouse is covered with a kind of plastic walls which permits all radiations from the sun. Global warming, the phenomenon of rising average air temperatures near earths surface over the past 100 to 200 years. However, increase in atmospheric concentration of co2 causes global warming.
Interviewing a biological oceanography professor at harvard university, ips notes that the worlds oceans are approaching 27 degrees c or warmer during the summer. This section provides the schedule of lecture topics and instructors along with lecture notes for select sessions. Global warming and climate change powerpoint lecture. Global warming notes background section explain the overall process of global warming. One thing that causes global warming is electrical pollution, fossil fuels are burned to create electricity. For h 2o, even though the lewis structure has been shown as a straight line, this does not mean that the molecule is.
While global warming is sometimes what we hear about, what is usually stressed are catastrophic or emotionally affecting alleged consequences of warming. Global warming is the phenomenon of gradual increase in temperature near the earths surface. Modern technologies has begun to curb the effects of global warming. Global warming is one of the most controversial science issues of the 21st century, challenging the very structure of our global society, says mark. Chapter 1 introduction to global warming shodhganga. 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 101 definition, facts, causes and effects of. Finally, i try to cover all of the major impacts that climate change is having, or is expected to have a student notes.
According to a report from world watch institute 1992, the earths surface was warmest in 1990. Fewer algae is a problem because there is less food for us and many animals in the sea. Because of the treacherous effects of global warming, some solutions must be devised. An ipcc special report on the impacts of global warming of 1. 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. Though, there has been controversies between two schools of scientific thought, one calling it is a myth and the other considering it is a reality, there is sufficient evidence to support the. Global warming is, itself, the product of many factors, and its. An introduction to global warming for students in grades 68.
Six of seven warmest years on record have occurred since 1980. Executive summary 1 executive summary g lobal warming is the defining challenge of our time. 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. Dr mercure and his colleagues offer modelled outputs to suggest that fossil fuel demand will fall sharply on the basis of. The chemistry of global warming emphasizing essentials 1.
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