global warming presentation topic

Global Warming

Miss Parson – Allerton Grange School

Aims and objectives

• To be able to define and understand the process of Global Warming.
• Be able to describe the effects of Global Warming on a global and local scale.
• Be able to recognise how the effects of Global Warming can be reduced.

What is�Global Warming ?

Global warming is the increase in the world’s average temperature, believed to be the result from the release of carbon dioxide and other gases into the atmosphere by burning fossil fuels.

This increase in greenhouse gases is causing an increase in the rate of the greenhouse effect .

The Greenhouse�Effect

The earth is warming rather like the inside of a greenhouse. On a basic level the sun’s rays enter the earths atmosphere and are prevented from escaping by the greenhouse gases. This results in higher world temperatures.

In more detail………

Energy from the sun drives the earth's weather and climate, and heats the earth's surface; in turn, the earth radiates energy back into space. Atmospheric greenhouse gases (water vapor, carbon dioxide, and other gases) trap some of the outgoing energy, retaining heat somewhat like the glass panels of a greenhouse.�

Without this natural "greenhouse effect," temperatures would be much lower than they are now, and life as known today would not be possible. Instead, thanks to greenhouse gases, the earth's average temperature is a more hospitable 60°F. However, problems may arise when the atmospheric concentration of greenhouse gases increases. �

What are the�greenhouse gases?

Since the beginning of the industrial revolution, atmospheric concentrations of carbon dioxide have increased nearly 30%, methane concentrations have more than doubled, and nitrous oxide concentrations have risen by about 15%. Why are greenhouse gas concentrations increasing?

Burning of fossil fuels and other human activities are the primary reason for the increased concentration of carbon dioxide.

CFC’s from aerosols, air conditioners, foam packaging and refrigerators most damaging (approx 6%).

Methane is released from decaying organic matter, waste dumps, animal dung, swamps and peat bogs (approx 19%).

Nitrous Oxide is emitted from car exhausts, power stations and agricultural fertiliser (approx 6%).

The major contributor is Carbon Dioxide (approx 64%).

Task 1:The �Greenhouse Effect

Complete your worksheet by cutting and labeling the diagram and answering the questions

Task 2 : Effects of global warming

You are about to see a series of pictures which show some of the effects of global warming.

Draw a rough sketch then write down the effects or titles for the pictures you've drawn

I’m thinking !

What are the consequences of Global Warming?

What are the pictures showing, what are the effects of global warming?

How did�you do?

Hurricanes –extreme weather

Flooding of coastal areas

Desertification

Ice caps melt

Rise in temperatures

Loss of wildlife habitats and species

Sea level rise

Extreme storms

There are also some positive effects of global warming

• Decrease in death and disease
• Healthier, faster growing forests due to excess CO2
• Longer growing seasons
• Warmer temperatures (UK Mediterranean climate!!)
• Plants and shrubs will be able to grow further north and in present desert conditions
• Heavier rainfall in certain locations will give higher agricultural production (Rice in India, Wheat in Africa).

How can Global Warming be reduced?

• Reduce the use of fossil fuels. A major impact would be to find alternatives to coal, oil and gas power stations.
• Afforest areas, trees use up the CO2, reduce deforestation.
• Reduce the reliance on the car (promote shared public transport).
• Try to use energy efficiently (turn off lights and not use as much!).
• Reduce, Reuse, Recycle.
• Careful long term planning to reduce the impact of global warming.
• Global Warming is the increase in global temperatures due to the increased rate of the Greenhouse Effect.
• Greenhouse gases trap the incoming solar radiation, these gases include Carbon Dioxide, CFCs, Methane, Nitrous Oxides and other Halocarbons. These are released by human activity.
• We need the Greenhouse effect to maintain life on earth as we know it…however if we keep adding to the Greenhouse gases there will be many changes.
• Consequences can be negative ( ice caps melt, sea level rise, extreme weather conditions) or positive (more rain in drought areas, longer growing season).

Re do diagram slide 7

http://www.flickr.com/photos/wwworks/2222523486/ - slide 1

http://www.flickr.com/photos/dzwjedziak/375723120/ - slide 8 and 1

http://www.flickr.com/photos/bratan/452189020/ - slide 4

http://www.flickr.com/photos/hogbard/412932972/- slide 6

http://www.flickr.com/photos/tiger_empress/467671978/ - slide 8

http://www.flickr.com/photos/48135670@N00/97951579/ - slide 9,12

http://www.flickr.com/photos/60158441@N00/177929708/ - slide 9,12

http://www.flickr.com/photos/andzer/1480068258/ - slide 9,12

http://www.flickr.com/photos/nickrussill/146743082/ - slide 9,12

http://www.flickr.com/photos/dasha/443747644/ - slide 10,13

http://www.flickr.com/photos/11371618@N00/469788104/ - slide 10,13

http://www.flickr.com/photos/mikebaird/2087879492/ - slide 10,13

http://www.flickr.com/photos/7471118@N02/432453250/ - slide 10,13

http://www.flickr.com/photos/madron/2595909135/ - slide 11

http://www.flickr.com/photos/chi-liu/491412087/ - slide 12,13

http://www.flickr.com/photos/fabbriciuse/2073789872/ - slide 16

http://www.flickr.com/photos/algo/92463787/ - slide 16

http://www.flickr.com/photos/nickwheeleroz/2295584401/ - slide 16

http://www.flickr.com/photos/andidfl/229169559/ - slide 16

Climate Matters • November 25, 2020

New Presentation: Our Changing Climate

Key concepts:.

Climate Central unveils Our Changing Climate —an informative and customizable climate change presentation that meteorologists, journalists, and others can use for educational outreach and/or a personal Climate 101 tool.

The presentation follows a ”Simple, Serious, Solvable” framework, inspired by climate scientist Scott Denning. This allows the presenter to comfortably explain, and the viewers to easily understand, the causes (Simple), impacts (Serious), and solutions (Solvable) of climate change. 

Our Changing Climate is a revamped version of our 2016 climate presentation, and includes the following updates and features:

Up-to-date graphics and topics

Local data and graphics

Fully editable slides (add, remove, customize)

Presenter notes, background information, and references for each slide

Supplementary and bonus slides

Download Outline (PDF, 110KB)

Download Full Presentation (PPT, 148MB)

Updated: April 2021

Climate Central is presenting a new outreach and education resource for meteorologists, journalists, and others—a climate change presentation, Our Changing Climate . This 55-slide presentation is a guide through the basics of climate change, outlining its causes, impacts, and solutions. This climate change overview is unique because it includes an array of local graphics from our ever-expanding media library. By providing these local angles, the presenter can demonstrate that climate change is not only happening at a global-scale, but in our backyards.

This presentation was designed to support your climate change storytelling, but can also double as a great Climate 101 tool for journalists or educators who want to understand climate change better. Every slide contains main points along with background information, so people that are interested can learn at their own pace or utilize graphics for their own content. 

In addition to those features, it follows the “Simple, Serious, Solvable” framework inspired by Scott Denning, a climate scientist and professor of atmospheric science at Colorado State University (and a good friend of the program). These three S’s help create the presentation storyline and outline the causes (Simple), impacts (Serious), and solutions (Solvable) of climate change. 

Simple. It is simple—burning fossil fuels is heating up the Earth. This section outlines the well-understood science that goes back to the 1800s, presenting local and global evidence that our climate is warming due to human activities.

Serious. More extreme weather, rising sea levels, and increased health and economic risks—the consequences of climate change. In this section, well, we get serious. Climate change impacts are already being felt around the world, and they will continue to intensify until we cut greenhouse gas emissions. 

Solvable. With such a daunting crisis like climate change, it is easy to get wrapped up in the negative impacts. This section explains how we can curb climate change and lists the main pathways and solutions to achieving this goal. 

With the rollout of our new climate change presentation, we at Climate Central would value any feedback on this presentation. Feel free to reach out to us about how the presentation worked for you, how your audience reacted, or any ideas or topics you would like to see included. 

ACKNOWLEDGMENTS & SPECIAL THANKS

Climate Central would like to acknowledge Paul Gross at WDIV-TV in Detroit and the AMS Station Science Committee for the original version of the climate presentation, Climate Change Outreach Presentation , that was created in 2016. We would also like to give special thanks to Scott Denning, professor of atmospheric science at Colorado State University and a member of our NSF advisory board, for allowing us to use this “Simple, Serious, Solvable” framework in this presentation resource.

SUPPORTING MULTIMEDIA

ENCYCLOPEDIC ENTRY

Global warming.

The causes, effects, and complexities of global warming are important to understand so that we can fight for the health of our planet.

Earth Science, Climatology

Tennessee Power Plant

Ash spews from a coal-fueled power plant in New Johnsonville, Tennessee, United States.

Photograph by Emory Kristof/ National Geographic

Learning materials

Upcoming event.

• Explorer Classroom: Photographing the Frozen Frontier with Esther Horvath | December 5

Global warming refers to the increase in the planet’s overall average temperature in recent decades. Natural processes have always affected Earth’s temperature and climate, but more recently, the planet’s temperature and climate have changed at a higher pace than nature alone can explain. These rapid changes are due to human activities and the widespread use of fossil fuels for energy.

Fossil fuels include coal, oil and natural gas. Burning fossil fuels causes what is known as the “ greenhouse effect ” in Earth’s atmosphere. The greenhouse effect happens when the sun’s rays penetrate the atmosphere , and the Earth’s surface reflects that heat. Some of the gasses in the atmosphere then trap heat over Earth. Gasses emitted by the burning of fossil fuels are very good at trapping heat and preventing it from leaving the atmosphere. These greenhouse gasses are carbon dioxide , methane , nitrous oxide , chlorofluorocarbons and water vapor . The excess heat in the atmosphere has caused the planet’s average global temperature to rise over time, otherwise known as global warming.

The Industrial Revolution , beginning in the mid-18th century, led to the start of an anthropogenic (human-caused) rise in greenhouse gas emissions from Europe and the United States. The invention of the coal-fired steam engine introduced coal as a major source of energy. Soon it was heating homes and fueling machines in factories.

Since that time, the burning of fossil fuels has steadily increased. Today, many countries around the world use fossil fuels to generate energy for electricity, heat and transportation. Emissions of greenhouse gasses have skyrocketed in the last 100 years, and especially since the 1980s. This has accelerated the rise in Earth’s temperature.

Global warming has presented humans with another issue: climate change. People often use the terms “global warming” and “climate change” interchangeably, but they are different. Global warming refers to Earth’s rising average temperature, while climate change refers to changes in weather patterns and growing seasons around the world. Global warming causes climate change, which poses a serious threat to life on Earth.

Humans are feeling the impact of global warming around the world as climate change brings intense droughts, wildfires and extreme storms with heavier rainfall. Higher temperatures are altering ecosystems , forcing animals to migrate to cooler places to survive. Scientists predict that, if nothing is done to lower global temperatures, many species will go extinct.

The ocean is also warming, and glaciers , ice caps and ice sheets are melting. This is causing sea levels to rise, creating flooding problems for many people who live on islands and in coastal communities.

Corals have been a symbol of the consequences of a warmer ocean. Many coral reefs—home to thousands of species of fish and other organisms—are dying. National Geographic Explorer Shireen Rahimi is an underwater storyteller who focuses her lens on the impact of global warming on tropical coral reefs. Her images capture humans’ relationships to the changing seas in the South Pacific, the Coral Triangle, and the Caribbean. Rahimi is dedicated to telling personal stories that encourage environmental action.

Countries around the world are trying to lower greenhouse gas emissions to slow global warming. In 2015, nearly 200 countries signed the Paris Agreement at a United Nations Climate Change conference. The international treaty tasks each country with lowering greenhouse gas emissions. The goal is to slow the pace of global warming and prevent Earth’s temperature from rising 2°C (3.6°F) above pre-industrial temperatures.

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October 21, 2024

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