PPT-Global Warming How Serious Is It?

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. This table is adapted from table 214 of the IPCC Fourth Assessment Report 2007 The 4 th assessment report values are the most recent 2007 but the second assessment report values 1995 are al so listed For more information please see the IPCC website 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. . 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 . – . its extent, and impact on the monsoon and marine productivity. Roxy M. K.. , K. Ritika, A. Modi, P. Terray, R. . Murtugudde. , . K. . . Ashok, B. . N. . Goswami, . S. Masson, . V. Valsala, . P. Swapna, . . . 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 . .. 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… Global warming is a key threat to biodiversity but few researchers have assessed the magnitude2climates calculated changes in habitatnumerous uncertainties in this approach we undertook a sensitivity Global surface temperature increased 0.74 ± 0.18 °C during the 100 years ending in 2005.The Intergovernmental Panel on Climate Change (IPCC) concludes "most of the observed increase in globally averaged temperatures since the mid-twentieth century is very likely due to the observed increase in greenhouse gas concentrations"via an enhanced greenhouse effect. . 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. Love . Råman Vinnå. 1. *. , . Iselin . Medhaug. 2. , . Martin . Schmid. 1. , . Damien Bouffard. 1. . . . 1. Eawag, Swiss Federal Institute of Aquatic Science and Technology, Surface Waters – Research and Management, Kastanienbaum, Switzerland; .