ENSC 002 Lecture Notes - Lecture 10: Thermal Expansion, Climate Change Mitigation, Climate Change Adaptation
11 Apr 2016
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Global climate change - lecture #12 2/16/16 pollutants that cool the atmosphere. Both human and natural sources (wildfires, volcano) Tiny particles (/sulfur) remain in troposphere for weeks/months. Sulfur-laden layer reduces amount of sunlight reaching earth. Complicates models of climate change solar flares/sunspots. Changes in climate change correlate w climate change potential climate change impacts. Melting ice, rising sea will flood coastal areas, extreme weathers! Fragile tundra will thaw release +co2 and frozen methane (positive feedback) Rainfall patterns change some get wetter, some get drier. water resources are afected. Ipcc projects sea levels rise 18-59 cm by 2100. Will rise in 2 ways: (positive feedback: increased melting decreases ice, which decreases albedo leading to further warming) Zooplankton in california coast have decreased by 80% :( since 1951. affects entire food chain. Migrating birds are returning to summer homes earlier. Ecosystems at greatest risk of species loss: coral reefs, mountain ecosystem, coastal wetlands, tundra, polar spa.
