Environmental Studies Week 3 - Climate Change
Climate ChangeIf you want to learn more check out Who was the first person that used the term rock ‘n’ roll to describe music?
Key Terms from CH.3:
Species *Climate change Explained We also discuss several other topics like Does a moving object have an impulse?
Natural Selection/Artificial Selection -Youtube
Biodiversity Carrying capacity of habitatIf you want to learn more check out How do we make decisions and solve problems?
Time and space patterns of precipitation, temperature, and wind over several decades.
↪Intergovernmental Panel on Climate Change (IPCC) - data safe to use to measure Don't forget about the age old question of How big is africa?
temp., CO2, etc. in relation to climate change.
→Probability of outcomes (likely, very likely something will happen); IPCC
Reports .90-99% probability
↪How do we study climate?
→Air bubbles in ice cones, tree rings; measured constantly; CO2 provides
Strong evidence for atmospheric change because it stays in the atmosphere
For a very long time.
Causes of Climate Change
Both natural and anthropogenic; majority of recent climate change attributed to anthropogenic
→Greenhouse Effect caused by ↑ retention of heat in the atmosphere caused by the
↑ in CO2
→Causes: energy supply, transport, deforestation, industry and development,
Agricultural development, landfills
→CO2 level right now: 404.39ppm safe level of CO2: 350ppm (parts per million)
→We are supposed to stay below 2oc of global temp. Change to avoid catastrophe.
Climate Change Cont’d
Warming reduces environment’s absorptive capacity; positive feedback: layer CO2
Concentration and greater climate change.
Positive Feedback Loop IPCC Reports-
best reports on
❋Widespread warming of the oceans and significant ice loss suggest that global climate change in the past 50 years in not mostly natural-caused❋
Departure from a reference value or long-term average
→to calculate:land surfaces and sea surfaces temperatures
→global scale climate diagnostic tool and provides a big picture overview of average
Global temps compared to a reference value
→Results of Anthropogenic Changes -heat wave risk ↑,↑ in storms and change in wind
Patterns, sea level rise, changes in precipitation
When CO2 is dissolved in oceans →forms extra carbonic acid →lowers pH of the ocean water and harming ocean life; human sanitation →increased levels of methane present in oceans →
❋Models cannot prove 100% humans are involved, but changes observed are consistent with human causes❋