PPT-Global Climate Change Chapter 13-3

Some of the infrared radiation passes through the atmosphere and some is absorbed and reemitted in all directions by greenhouse gas molecules The effect of this is to warm the Earths . Some lessons from . climategate. Kevin E Trenberth. NCAR. In Honor of Stephen Schneider. Climategate. Refers to emails illegally hacked from Univ. East Anglia.. Many unfounded charges made, statements taken out of context, misused.. @ 21. : Africa’s expectations to and from Paris 2015. Prof Godwell Nhamo (PhD) - Unisa. Ms . Uyo. . Salifu. . - Institute for Security Studies. Problem statement. The 21st birthday brings along significant landmarks. . 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. Learning Objectives. :. To understand the evidence for and against global climate change- World and UK temperatures for the last 100 and 1000 years. To know the causes of global warming. To know the consequences of global climate change- social, economic, environmental and political consequences of global climate change and how they change the way we live. . Effects on Biodiversity. Warren G. Abrahamson. Biology Department. Bucknell . University. Threat: Impacts of .  . CO. 2. CO. 2. has . increased . ≈. 25. % in . 100 yrs.. Atmospheric . CO. 2. Ice Core CO. Climate change. Climate change can be discussed in short, medium and long timescales. . Short-term (recent) climate change is on a timescale of decades, an example would be global warming. . The medium-term (historical) timescale covers changes over the last few thousand years.. Key Message #1. 2. Ch. 2 | Our Changing Climate. Global climate is changing rapidly compared to the pace of natural variations in climate that have occurred throughout Earth’s history. Global average temperature has increased by about 1.8°F from 1901 to 2017, and observational evidence does not support any credible natural explanations for this amount of warming; instead, the evidence consistently points to human activities, especially emissions of greenhouse or heat-trapping gases, as the dominant cause.. :. To understand the evidence for and against global climate change- World and UK temperatures for the last 100 and 1000 years. To know the causes of global warming. To know the consequences of global climate change- social, economic, environmental and political consequences of global climate change and how they change the way we live. . Kerry Emanuel. Department of Earth, Atmospheric, and Planetary Sciences, MIT. Common Misperceptions about Climate and Climate Science. Earth’s climate is inherently . s. table. Climate science is very young . An Enormous Cloud of Air Pollutants and Ash from Mt. Pinatubo. June 1991: Mount Pinatubo (Philippines) exploded. Airborne pollutants, deaths, and damage. Affected climate temperature. James Hansen(NASA) cooled the temp of the earth by )0.5* over a 19. Scientific Basis for Human Induced Climate Change. Jagadish Shukla. Department of Atmospheric, Oceanic and Earth Sciences (AOES),. George Mason University (GMU). Center for Ocean-Land-Atmosphere Studies (COLA). Kerry Emanuel. Lorenz Center. Department of Earth, Atmospheric, and Planetary Sciences, MIT. Web: emanuel.mit.edu. Summary of Main Points:. Earth’s climate is . stable within certain limits, but sensitive to change in forcing within those limits.. CONCERN. M. r. . . J. ogdand. O. K.. Department . of . Environment Sci.. Deogiri College, Aurangabad. CLIMATE CHANGE : A GLOBAL CONCERN. Presented By. Jogdand Onkar Kishanrao. Dept of . Env.Sci,DCA. W. i. lfr. a. n. . Moufouma. -. O. kia,. IPCC Working Group 1 . Technical Support Unit (TSU), Head of sciences. CCI CMUG Integration 7 meeting, IPSL, Paris,13. . February. . 2017. IPCC role and key principles.