Transcript Envir100Lect108 - UW Courses Web Server

Background
• Hiked/Climbed since 1957
• Taught since 1971: UMC & UW
• Teaching and research in air
pollution and climate change since
1972.
Critical Thinker/Problem Solver
• Nature of Evidence
– Conversation
– News
– Reading
– Web
– Lecture/Lab/Quiz Section
– Field Trips
• Ways of Knowing
– Scientific method
– Many other ways
Mountain Pine Beetle, BC
• Impact between 1996 and today: An
area the size of North Dakota
• Today and 2020: Twice that area
Fires in Washington and British
Columbia
2006 Tripod Fire: 175,000 plus acres, $82,000,000 - “…offers an
unsettling glimpse of the future.”
Fire size
Fire intensity
Tripod Fire
Glacier Retreat and Decreases in Snowpack
Which image has the most impact on you
(you want to know more or why)?
1. Pictures of glaciers
1928 - 2003
2. Article in Science
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Answer Now!
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This time sequence is used to show that the South Cascade
Glacier has retreated between 1928 and 2003, what
additional evidence or information would you want to have
before you thought that this was really important?
• Visit the glacier yourself - 1
• Picture from 2007 - 2
• Pictures of other glaciers in the Cascades - 3
• Pictures of other glaciers in North America - 4
• Pictures of other glaciers in the world - 5
• Other - 6
What additional evidence or information
would you want to have before you thought
that this was really important?
1. Visit glacier yourself
2. Picture from 2007
3. Pictures of Cascade
glaciers
4. Pictures N American
glaciers
5. Pictures of world
glaciers
6. Other
Answer Now!
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The retreat of the South Cascade Glacier is evidence of climate
change -- what additional information would you want before
you would accept this statement?
• Information about more glaciers - 1
• Statement from Al Gore or Ron Sims - 2
• Knowledge that there is really is a link between glacier size & climate - 3
• Other non-glacial activity that also illustrates climate change - 4
• Never will be convinced - 5
• Other - 6
2006
What additional information would you want
before you would accept this statement?
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6.
Information about more
glaciers?
Statement from Al Gore
or Ron Sims
Scientific link between
glaciers and climate
Non-glacial changes
associated with climate
None
Other
Answer Now!
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Evidence from Europe
• Reading the
landscape
• Reading the
literature
Summary
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Introductions
Course syllabus and requirements
Quiz Sections
Example with fires, glaciers and beetles
(climate change related phenomena)
• Role of evidence (information,
observation, stories)
– Role of visual or written or oral evidence
– Ways of knowing
http://www.ecy.wa.gov/climatechange/index.htm