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Global Climate Change: Detection and Attribution. Finish Idealized Global Circulation Model and Global Climates Is the Current Climate Changing? If so, on what evidence? Why? Exam I on Feb 5 ! Review Sheet is Posted. Where the Hell is Matt?. http://www.youtube.com/watch?v=zlfKdbWwruY. - PowerPoint PPT Presentation
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Global Climate Change: Detection and Attribution
Finish Idealized Global Circulation Model and Global ClimatesIs the Current Climate Changing? If so, on what evidence?Why?
For Next Class: Read Chapter 2 (pp. 66-81) and watch King CornExam I on Feb 10! Review Sheet is Posted.
2017 Peru Summer Study Abroad: Climate Change, Glaciers, and Water Resources
June 29 to July 13, 2017GHY 3140: Andean Mountain Geography (3 hrs) GHY 3530: Climate and Tropical Glaciers (3 hrs)
This 15-day intensive program introduces students to climate change impacts in the Andes through direct field experience and research activities, readings, discussions, and meetings with guest speakers. Field excursions to Machu Picchu and other locations in the Sacred Valley and a 6-day trek in the Cordillera Vilcanota (with strenuous ascents to over 17,000 ft) will provide an outstanding setting for the study of Andean human-environment interactions and the impacts of climate variability and change on tropical glaciers, ecosystems, water resources, and human populations.
Program Leader: Dr. Baker PerryInterested? Contact Dr. Perry ([email protected]) to apply or for more information.
Climate Change Detection
Is the Earth’s Current Climate Changing?
If so, what evidence can you provide?
(We will discuss the question of attribution in a few minutes.)
NASA GISS Surface Temperature Anomalies
Figure SPM.1bObserved change in surface temperature 1901-2012
All Figures © IPCC 2013
© AMS 24
Trends in Mean Annual Temperature
Observed Variations in the Cryosphere
Credit: Baker Perry, Appalachian State University
Laguna Glaciar, Cordillera Real, Bolivia1999 2016
Chacaltaya Glacier Disappeared in 2009
2003
2016
Source: http://news.bbc.co.uk/2/hi/americas/6496429.stm
IPCC AR5
Indicators of Climate Change
IPCC 2013
Overview of Observed Change Indicators
IPCC 2013
Climate Change AttributionWhy is the climate changing?
What are the Anthropogenic Influences on Climate?
Greenhouse gases
Aerosols – suspended particulates
Land use/land cover change
Global Mean Energy Balance
IPCC AR4 FAQ 1.1 Figure 1
+3.0 w m-2
Relevant Natural Forcings?
Solar Irradiance
Volcanoes
Changes in Oceanic and Atmospheric Circulation
No denying that anthropogenic
warming is playing a role:
Question is how much?
