PPT-12.340x Global Warming Science

WrapUp Some Key Points Climate has changed on many different time scales throughout the history of our planet Such climate change is thought to have been caused by variations in absorbed sunlight solar and orbital variability and volcanoes changing concentrations of key greenhouse gases and changing continental configuration. Many people consider that Global Warming is the greatest environmental threat of the 21. st. Century. . However, during the 80s and early 90s scientists argued about the causes and effects of global warming. . to increasing support for climate action. John Cook. Global Change Institute, University of Queensland. 19 Sep 2013. “Science . is not a democracy. . It . is a dictatorship. . It . is evidence that does the dictating. Crash Course. Dana Nuccitelli. dana1981@yahoo.com. @dana1981. Who Am I?. B.A. in Astrophysics from UC Berkeley, 2003. M.S. in Physics from UC Davis, 2005. Environmental Scientist and Risk Assessor working at McClellan Business Park since 2006. By Matthew and saeb . What is global warming. Carbon dioxide and other air pollution that is collecting in the atmosphere like a thickening blanket, trapping the sun's heat and causing the planet to warm up. Coal-burning power plants are the largest U.S. source of carbon dioxide pollution -- they produce 2.5 billion tons every year. Automobiles, the second largest source, create nearly 1.5 billion tons of CO2 annually. Created and presented by Brandi graham. What is global warming and why is it happening? . Global warming is the term used to describe a gradual increase in the average temperature of the Earth's atmosphere and its oceans, a change that is believed to be permanently changing the Earth's climate. Greenhouse Effect . ☼ . NORMAL trapping of some of the Sun’s heat . ☼ . Keeps our planet warm enough to support life. Global Warming. ☼. The thickening of the atmosphere with greenhouse gasses (CO. Some of the infrared radiation . passes through the atmosphere, . and some is absorbed and . re-emitted in all . directions by . greenhouse gas . molecules. The . effect of this . is to warm . the Earth’s . .. Dr. Gene Fry . .. March 2019 . .. . Climate Changes without Humans. .. Climate has been changing for hundreds of millions of years (MY).. Mostly, it’. s been much warmer, with much higher CO. CLIMATE FROM A GEOLOGIC PERSPECTIVE 1 GLOBAL WARMING/COOLING CYCLES FROM A GEOLOGIC PERSPECTIVE (meaning a very long time horizon) By Rocky Romero Rev 3 CLIMATE FROM A GEOLOGIC PERSPECTIVE 2 I’ve structured the explanation of Climate Change in three parts… Coover ii 2008 Leslie Charles Coover ALL RIGHTS RESERVED Coover iii EXECUTIVE SUMMARY The greenhouse effect results when certain gasses trap the energy of the sun as it radiates upward from the eart Coming ready or not!. Help!. NCAR Earth System Laboratory. NCAR is sponsored by NSF. Climate. The atmosphere is a “global commons.”. Air over one place is typically half way round the world a week later, as shown by manned balloon flights.. 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.. The Greenhouse Effect. MacGoy. 2012. Introduction. Irregular Weather Patterns. Increasing Global Temperatures. Worsening Human Health?. Changing animal populations and changing animal behavior. People and Groups who agree that Global Warming Exists. Robert G. Strom, Professor Emeritus. Department of Planetary Sciences and Lunar and Planetary Laboratory. University of . Arizona. Tucson, Arizona. List of Presentations. Part 1 --- Summary of Global Warming.