Climate Change - Coral Reef Lab and Field Studies - Lecture Slides, Slides for Biology. Central University of Kerala

Biology

Description: These are the lecture slides of Coral Reef Lab and Field Studies. Key important points are: Climate Change, Ice Core Exercise, History of Climate Change, Greenhouse Effect, Global Energy Balance, Greenhouse Gases, Vernier Lab, Greenhouse Gas, Mauna Loa Data, Long Term Data Sets
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Climate Change

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Fig. 1 Age of Ice Core Layers Go to: http://www.pbs.org/wgbh/nova/warnings/stories/icecore.html

Ice Core Exercise.doc

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Activity Exploring the History of Climate Change Students will analyze fabricated ice cores and record their physical and chemical characteristics.

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• Compare pH and CO2. CO2 in solution with water

becomes carbonic acid, dropping the pH, so measuring relative pH should indicate relative levels of CO2.

• Measure particulates • Discussion Questions • Answer Ice Core Research

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Greenhouse Effect.doc Purpose Measure the effect on temperature of a greenhouse gas (carbon dioxide—CO2) on a simulated atmosphere and compare this data against an atmosphere with lower levels of CO2.

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Space

Atmosphere

Land & Ocean

Origin

Percent (%)incoming

Interaction/ Component

Percent (%)

Interaction/ Component

Percent (%)

Sun

100

Absorbed by atmospheric

H2O, dust, O3

16

Absorbed by ground

51 Absorbed in

clouds

3

Backscattered by air

6

Reflected by clouds

20

Reflected by surface

4

Balance

100=

+49

+51

Table 1: Global Energy Balance

Note: The percent of energy portions vary from author to author, depending upon the literature cited. Docsity.com

Natural • H2O • CO2 • CH4 • O3

Anthropogenic • CO2 • N2O • CFCs • HFCs • PFCs • SF6

Under clear conditions, void of clouds, H2O vapor is the predominant greenhouse gas (60% to 70%). The second largest source of greenhouse gas is CO2,

Greenhouse gases

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Vernier LabQuest)

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Follow procedures in handout and answer Analysis/ Synthesis Questions

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Greenhouse gas.doc

Objectives: Students will: • Discuss the benefits of long-term data sets

and studies • Use a long-term data set to plot graphs and

examine patterns • Extrapolate what future climates may be like • Use empirical data to discuss how human

activity is affecting the planet

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Materials: • Access to the Mauna Loa data set

or printouts of the spreadsheet • Laptop with Excel • Access to the Mauna Loa data set

or printouts of the spreadsheet • BBC News article for students, Ice

Cores Unlock Climate Secrets

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