PPT-Shortwave and longwave contributions to global warming unde

2 Aaron Donohoe University of Washington CLIVAR CONCEPT HEAT Meeting Exeter September 30 2015 Energy imbalance and temperature change ASR OLR Unperturbed Atmospheric Emission Level. 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. . What are the threats?. What are the facts?. What is best to do?. Objectives. Examine in a thorough, yet understandable way, the theory of man made global warming. Analyze its plausibility. Review other factors, besides CO2, that may also impact the climate.. Methods to establish human influence. Climate observations. Climate modeling. Simulation of how climate will change. Run forward to make predictions of the future. Run backwards. Run without carbon dioxide increase. 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. By Amanda Vang and Sydney Billington. What is Global. Warming?. Global warming is a when the earth’s temperature increases and it can change the earth’s climate permanently. Released greenhouse gases, increased amount of carbon dioxide, burning fossil fuels and human activities such as driving and cutting down trees and plants can cause global . Robin Hogan. ECMWF and University of Reading. Contributions from: . Sophia . Schäfer. , Christine . Chiu (University of Reading). Carolin. . Klinger, Bernhard . Mayer (LMU Munich). Susanne . Crewell. . . Physics Department Colloquium . UNC . Chapel Hill. . September 8, 2014. . William . Happer. Princeton University. Will Happer, Climate Scientist, 1982. Define the Problem. Gather the Evidence. Identify the Causes. Evaluate an Existing Policy. Develop Solutions. Select the Best Solution (Feasibility . vs. Effectiveness. ). PPA Steps. What do you think Global Warming is?. 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 . transmitted. absorbed. reflected. 1. transmission. Radiation passes through atmosphere unimpeded.. Shortwave and longwave “windows” . 2. absorption. Energy is transferred to absorber; absorber emits energy. .. 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. 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. longwave is calculated by combining the output of two longwave sensors. Net shortwave is calculated separately by combining the output of two shortwave sensors. This model includes two shortwave and Qnet. = (. Downwelling. Shortwave + Upwelling Shortwave (albedo)) + (. Downwelling. . Longwave – Upwelling Longwave). Substituting the GEOS-5 expressions for each of these fields gives:. Sfc. .