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Global Warming.


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Global Warming Inconvenient truth handout Physics of anthropogenic global warming Key diagrams Consequences What can you do? What causes Global Warming? Addition of greenhouse gases to atmosphere Main culprits are Carbon Dioxide, Methane, and water Trees take up CO 2 Animals Produce
Transcripts
Slide 1

An Earth-wide temperature boost Inconvenient truth present Physics of anthropogenic worldwide warming Key graphs Consequences What would you be able to do?

Slide 2

What causes Global Warming? Expansion of nursery gasses to environment Main guilty parties are Carbon Dioxide, Methane, and water

Slide 4

Trees take up CO 2 Animals Produce Methane CS Fig. 15.20 4

Slide 5

Basic Physics Greenhouse gasses trap heat in Earth’s air Greenhouse gas fixations have risen Trapped radiation has been measured Planet will warm!!!!

Slide 8

Measured Changes in Outgoing Radiation 1970-1997

Slide 9

CS Fig. 15.25 9

Slide 10

Has the blazing of fossil energizes brought about expanded CO2 fixations in the climate? Yes! Estimations of air in Hawaii Measurements of antiquated air safeguarded in ice

Slide 11

CS Fig. 15.19 11

Slide 12

Bubbles in frosty ice safeguard quality of past penny uries: Tell us what CO 2 focuses were similar to before the modern unrest

Slide 13

Last Interglacial Current Longer records Current CO 2 levels are well above reach saw amid late geologic history connected with the ice ages

Slide 14

Can’t represent late warming Can’t represent earlier warming Works! Best confirmation that late warming is anthropogenic Three years in the 1990’s are the hottest in the Northern Hemisphere, by a long shot, of the most recent 400 years! Information from Mann and others, Nature, 1998; Figure from IPCC 2001 Report

Slide 15

Consequences Planet will warm High scopes will warm more than low scopes Sea level will rise Questions: How quick will warming and ocean level ascent happen How will Earth’s climate examples be influenced

Slide 16

Global Temperatures anticipated to rise 3 to 7 °F IPCC 2007 http://www.ipcc.ch/pdf/evaluation report/ar4/syr/ar4_syr_spm.pdf

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The greatest level of a worldwide temperature alteration, as anticipated by 95,000 home PCs Stainforth, D. A. et al Nature 433 , 403−406 (2005).

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CS Fig. 15.23 18

Slide 19

Change in Minnesota “Recent exploration demonstrates a warming pattern in Minnesota. An atmosphere's investigation record at Fort Snelling demonstrates an increment of 2.9°F in normal yearly temperature between the 1860s and 1987, just about three times the overall normal. Examinations of more than a hundred temperature-profundity profiles in North America demonstrate that ground scopes similar to Minnesota’s showed ground warming of up to 3.6°F.” From “Playing with Fire, Global Warming in Minnesota” 1999; information from Baker and Skaggs, 1989

Slide 20

Change in Lake Superior

Slide 21

MN Biomes at danger

Slide 22

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