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USC / Environmental Studies / ENST 150gx / What is ocean acidification and why is it a problem?

What is ocean acidification and why is it a problem?

What is ocean acidification and why is it a problem?

Description

School: University of Southern California
Department: Environmental Studies
Course: Environmental Issues in Society
Professor: Ekaterina svyatets
Term: Summer 2016
Tags: Environmental Studies, climate change, and Lecture Notes
Cost: 25
Name: Environmental Studies Week 3 - Climate Change
Description: Short week this week. Discussion on the definition of climate change and how it's studied.
Uploaded: 09/10/2016
2 Pages 70 Views 2 Unlocks
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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?

9/7/16

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

Ecology                Ecosystem

Biodiversity                Carrying capacity of habitatIf you want to learn more check out How do we make decisions and solve problems?

Fossil Record                Mass extinction eventsWe also discuss several other topics like Who are charles and ray eames?
Don't forget about the age old question of Why can a monopoly earn profits in the long run?

Climate

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

   Influences.

        →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

GHG Emissions

        Warming reduces environment’s absorptive capacity; positive feedback: layer CO2

Concentration and greater climate change.

Positive Feedback Loop                                                IPCC Reports-

                                                                        best reports on

                                                                        climate change

❋Widespread warming of the oceans and significant ice loss suggest that global climate change in the past 50 years in not mostly natural-caused❋

Temperature Anomaly

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

Ocean Acidification

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 →

Acidification.

❋Models cannot prove 100% humans are involved, but changes observed are consistent with human causes❋

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