Climate Change: What Is It, Proof It's Happening, And What You Can Do

Category: Education

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Climate Change - What is it, Proof that it's Happening, and What You Can Do About it. PowerPoint created by Public Domain PowerPoint - can be copied and updated for lectures on climate change (non-commercial and commercial).There are notes and links to sources in the notes section for each slide that will download into PowerPoint (it's not the same as the "Presentation Transcription" below). Updated January 2017. Sources: U.S. Government Agencies: NASA (National Aeronautics and Space Administration), NOAA (National Oceanic and Atmospheric Administration), NCDC (National Climatic Data Center), and (U.S. Global Change Research Program).


Presentation Transcript

Climate Change – :

Climate Change – What is it, Where is the Proof that it’s Happening and What You Can Do About It Updated January 2017. This PowerPoint Presentation is in the Public Domain

Table of Contents:

What is Climate Change? Proof that it’s Happening: Increasing Greenhouse Gases Signs in the Environment Scientific Consensus What You Can Do Table of Contents


What is Climate Change?




Proof that it’s Happening : Increasing Greenhouse Gases IPCC


Global Average Abundances of Major Greenhouse Gases NOAA


Carbon Dioxide Concentrations Over 400 Thousand Years Using Ice Cores NASA


CO2 Levels Linked to Global Temperatures


Proof that it’s Happening : Signs in the Environment IPCC


Indicators of a Warming World NOAA/NCDC


Decrease in Arctic Sea Ice Sea Ice Minimum - Average September Extent NASA


Arctic Sea Ice Minimum (September) 1979 vs. 2015 NASA


Rise in Air Temperatures Difference in Global Surface Temperature 1884 to 2015 NASA


Rise in Ocean Heat Content NOAA


Rise in Sea Level NASA


Decrease in Land Ice Levels (Antarctica) NASA


Decrease in Land Ice Levels (Greenland) NASA


Muir Glacier 1941 and 2004 NOAA


Proof that it’s Happening : Scientific Consensus IPCC


Scientific Consensus: Earth's Climate is Warming NASA “Multiple studies published in peer-reviewed scientific journals show that 97% or more of actively publishing climate scientists agree: Climate-warming trends over the past century are extremely likely due to human activities. In addition, most of the leading scientific organizations worldwide have issued public statements endorsing this position.”


Scientific Consensus: Earth's Climate is Warming Statements on Climate Change from Scientific Associations NASA "The scientific evidence is clear: global climate change caused by human activities is occurring now, and it is a growing threat to society." ( American Association for the Advancement of Science , 2006) "Comprehensive scientific assessments of our current and potential future climates clearly indicate that climate change is real, largely attributable to emissions from human activities, and potentially a very serious problem." ( American Chemical Society , 2004)


"Human‐induced climate change requires urgent action. Humanity is the major influence on the global climate change observed over the past 50 years. Rapid societal responses can significantly lessen negative outcomes." ( American Geophysical Union , 2013) "Our AMA ... supports the findings of the Intergovernmental Panel on Climate Change’s fourth assessment report and concurs with the scientific consensus that the Earth is undergoing adverse global climate change and that anthropogenic contributions are significant." ( American Medical Association , 2013) Scientific Consensus: Earth's Climate is Warming Statements on Climate Change from Scientific Associations NASA


"It is clear from extensive scientific evidence that the dominant cause of the rapid change in climate of the past half century is human-induced increases in the amount of atmospheric greenhouse gases, including carbon dioxide (CO2), chlorofluorocarbons, methane, and nitrous oxide." ( American Meteorological Society , 2012) "The evidence is incontrovertible: Global warming is occurring. If no mitigating actions are taken, significant disruptions in the Earth’s physical and ecological systems, social systems, security and human health are likely to occur. We must reduce emissions of greenhouse gases beginning now." ( American Physical Society , 2007) Scientific Consensus: Earth's Climate is Warming Statements on Climate Change from Scientific Associations NASA


"The Geological Society of America (GSA) concurs with assessments by the National Academies of Science (2005), the National Research Council (2006), and the Intergovernmental Panel on Climate Change (IPCC, 2007) that global climate has warmed and that human activities (mainly greenhouse‐gas emissions) account for most of the warming since the middle 1900s." ( The Geological Society of America , 2010)" Scientific Consensus: Earth's Climate is Warming Statements on Climate Change from Scientific Associations NASA


"Climate change is real. There will always be uncertainty in understanding a system as complex as the world’s climate. However there is now strong evidence that significant global warming is occurring. The evidence comes from direct measurements of rising surface air temperatures and subsurface ocean temperatures and from phenomena such as increases in average global sea levels, retreating glaciers, and changes to many physical and biological systems. It is likely that most of the warming in recent decades can be attributed to human activities (IPCC 2001)." ( 11 international science academies , 2005) "The scientific understanding of climate change is now sufficiently clear to justify taking steps to reduce the amount of greenhouse gases in the atmosphere." ( U.S. National Academy of Sciences , 2005) Scientific Consensus: Earth's Climate is Warming Statements on Climate Change from Scientific Academies NASA


"The global warming of the past 50 years is due primarily to human-induced increases in heat-trapping gases. Human 'fingerprints' also have been identified in many other aspects of the climate system, including changes in ocean heat content, precipitation, atmospheric moisture, and Arctic sea ice." ( 13 U.S. government departments and agencies , 2009) Scientific Consensus: Earth's Climate is Warming Statements on Climate Change from U.S. Government Agencies NASA


Only 0.17 Percent of Peer-Reviewed Papers Reject Global Warming


“Imagine a giant asteroid on a direct collision course with Earth. That is the equivalent of what we face now [with climate change], yet we dither.” James Hansen, NASA Climate Scientist


What You Can Do


Switch to a 100% renewable energy option through your local utility or a nationally certified utility Choose Renewable Energy!


Change your lightbulbs to LED Unplug unused electronics Wash clothes in cold water and hang them to dry Install a programmable thermostat Buy certified energy efficient appliances Check lights, appliances, curtains and your thermostat at night and anytime you leave home Insulate your home Get an energy audit Avoid Wasting Unneeded Energy


Walk, bike, carpool, and use public transit as much as possible When you replace your car, buy the most energy efficient and low emission car you can afford (ideally, buy used) Minimize air travel and buy carbon offsets when you do fly Minimize Fuel Consumption


Buy local and organic produce from local farmers, farmer markets and health food stores Eat unprocessed food Minimize dairy and meat consumption (the livestock sector is responsible for 18% of global GHG emissions) Eat at restaurants that serve local and organic produce Eat a Low GHG Diet


Analyze your garbage and look for ways to minimize it by choosing products with, ideally, no packaging or, at least, recycled/recycleable packaging Recycle as much as possible, even when travelling Seek out ways to recycle challenging items, like Styrofoam, in your community Compost your food (reduces GHG emissions) Declutter your home and donate unneeded items to charity Embrace a minimalist lifestyle Strive for a Zero Waste Lifestyle


Calculate your remaining carbon emissions and buy carbon offsets through a certified offset company Buy Carbon Offsets to Offset the Rest


Research the companies you buy products and services from (especially ongoing purchases). If they aren’t reducing greenhouse gases themselves and supporting action on climate change, switch to a company that is Switch to a credit union or local, community-oriented bank Support Companies that Share Your Concerns


Share both your concerns and effective solutions you learn about with your elected representatives, friends and family and social media Speak Out


Support and volunteer for organizations that are effectively addressing climate change such as Cool Earth, Sierra Club, SolarAid and organizations promoting vegetarianism Get Involved

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