presented by Carbon Dude

presented by Carbon Dude

Carbon DioxideCarbon Dioxide

basis of carbon cyclebasis of carbon cyclebasis of carbon cyclebasis of carbon cycle

comprises comprises 0.03%0.03% of earth’s of earth’s atmosphereatmosphere

comprises comprises 0.03%0.03% of earth’s of earth’s atmosphereatmosphere

usually more COusually more CO22 in city air than in city air than country aircountry air

usually more COusually more CO22 in city air than in city air than country aircountry air

product of combustion (oil, product of combustion (oil, gasoline, coal, natural gas, wood) gasoline, coal, natural gas, wood)

and respirationand respiration

product of combustion (oil, product of combustion (oil, gasoline, coal, natural gas, wood) gasoline, coal, natural gas, wood)

and respirationand respiration

climate changeclimate changeclimate changeclimate change

Why should Why should I care about I care about

carbon dioxide?carbon dioxide?

Carbon dioxide is directly related toCarbon dioxide is directly related to

greenhouse gasesgreenhouse gasesgreenhouse gasesgreenhouse gases

global warmingglobal warmingglobal warmingglobal warming

pollutionpollutionpollutionpollution

What are What are greenhouse greenhouse

gases?gases?

transparent gases in the transparent gases in the atmosphere which contribute to atmosphere which contribute to

the greenhouse effect the greenhouse effect

transparent gases in the transparent gases in the atmosphere which contribute to atmosphere which contribute to

the greenhouse effect the greenhouse effect

trap heat near the Earth’s trap heat near the Earth’s surface surface

trap heat near the Earth’s trap heat near the Earth’s surface surface

include COinclude CO22, CH, CH4 4 (methane), (methane), nitrous oxide, nitrous oxide,

chlorofluorocarbons (CFCs), and chlorofluorocarbons (CFCs), and water vapor water vapor

include COinclude CO22, CH, CH4 4 (methane), (methane), nitrous oxide, nitrous oxide,

chlorofluorocarbons (CFCs), and chlorofluorocarbons (CFCs), and water vapor water vapor

can raise the mean global can raise the mean global temperature of the Earth temperature of the Earth

can raise the mean global can raise the mean global temperature of the Earth temperature of the Earth

What are What are chlorofluorocarbons?chlorofluorocarbons?

chemicals that contain the chemicals that contain the elements chlorine, fluorine, and elements chlorine, fluorine, and

carboncarbon

chemicals that contain the chemicals that contain the elements chlorine, fluorine, and elements chlorine, fluorine, and

carboncarbonwere used in refrigerator were used in refrigerator

coolant, manufacture of aerosol coolant, manufacture of aerosol sprays, blowing agents for sprays, blowing agents for

foams and packing materials, foams and packing materials, and as solvents and as solvents

were used in refrigerator were used in refrigerator coolant, manufacture of aerosol coolant, manufacture of aerosol

sprays, blowing agents for sprays, blowing agents for foams and packing materials, foams and packing materials,

and as solvents and as solvents when released, deplete the when released, deplete the

ozone layer of the atmosphere ozone layer of the atmosphere

when released, deplete the when released, deplete the ozone layer of the atmosphere ozone layer of the atmosphere

use should be obsolete in the use should be obsolete in the

next decade next decade use should be obsolete in the use should be obsolete in the

next decade next decade

What is What is ozone?ozone?

Ozone is a substanceOzone is a substancederived from the derived from the element, oxygen.element, oxygen.

O

Ozone (OOzone (O33)-a highly active )-a highly active compound in the atmosphere compound in the atmosphere

which is widely dispersed in a 15 which is widely dispersed in a 15 to 50 km thick layer that to 50 km thick layer that

prevents harmful UV rays from prevents harmful UV rays from reaching the earth.reaching the earth.

Ozone (OOzone (O33)-a highly active )-a highly active compound in the atmosphere compound in the atmosphere

which is widely dispersed in a 15 which is widely dispersed in a 15 to 50 km thick layer that to 50 km thick layer that

prevents harmful UV rays from prevents harmful UV rays from reaching the earth.reaching the earth.

+

+

-

OG

oxygen

88

15.999715.9997

How many electrons?

How many protons?How many neutrons?

8

88

88

atomic numberatomic number

= atomic massatomic mass

-

+ +++

++

-

-

- -

-

-

How many energy levels?

22

# of protons = atomic number+

+++++++

1 2

3 4 5 6 7 8

# of energy levels

Which properties Which properties are used to positionare used to position

oxygen on the oxygen on the periodic table?periodic table?

1

28

O

18 km18 km

ozoneozone

50 km50 km

90 km90 km

TroposphereTroposphere

StratosphereStratosphere

MesosphereMesosphere

Exosphere

Thermosphere / Ionosphere

Exosphere

Thermosphere / Ionosphere

500+ km500+ km

Upper Atmosphere

Upper Atmosphere

What is the What is the greenhouse greenhouse

effect?effect?

CO2CO2

changes in the Earth’s atmosphere changes in the Earth’s atmosphere that may enhance the natural that may enhance the natural

warming process and elevate global warming process and elevate global temperaturetemperature

changes in the Earth’s atmosphere changes in the Earth’s atmosphere that may enhance the natural that may enhance the natural

warming process and elevate global warming process and elevate global temperaturetemperature

CO2CO2 CO2CO2

CO2CO2

CO2CO2

CO2CO2

CO2CO2

CO2CO2

CO2CO2

CO2CO2

CO2CO2

CO2CO2

CO2CO2

CO2CO2

CO2CO2

CO2CO2CO2CO2

CO2CO2

CO2CO2

CO2CO2

CO2CO2CO

2CO

2

CO2CO2

Most outgoing heat energy:

trapped

Most outgoing heat energy:

trapped

CO2CO2CO

2CO

2

Looking at earth from space. (1994). NASA

Bibliography

“Global Carbon Cycles.” (12 April 1999). Available. [Online] http://www.uoregon.edu/~dogsci/dorsey/geo103/lect3.html

Schimel, et al. (1995). Climate Change 1994. CO2 and the carbon cycle. Cambridge University Press: Cambridge, UK.

Kasting, James F. (1995). Consequences. The carbon cycle, climate, and the long-term effects of fossil fuel burning. Available. [Online] http://www.gcrio.org/CONSEQUENCES/vol4no1/carbcycle.html

Elkins, James W.(1999). Chlorofluorocarbons (CFCs). Available [Online http://www.cmdl.noaa.gov/noah/publictn/elkins/efcs.html] National Oceanic and Atmospheric Administration, Climate Monitoring and Diagnostics Laboratory

Modified from 2004 Plano ISD