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1. The Impacts of Greenhouse
Gases on Global Warming

2. Global Warming
Global warming is the rise in the average
temperature of Earth's atmosphere and
oceans since the late 19th century.
Since the early 18th century, Earth's
mean surface temperature has increased
by about 1.4 °C
http://www.youtube.com/watch?v=pG41xDxrzI8&feature=related

3. What Causes Global Warming
Particulates
and soot
Greenhouse Solar
gases activity
Global
Warming

4. What is greenhouse gases
Gases that trap heat in the
atmosphere are called greenhouse
gases.
Water vapor (H2O)
Carbon dioxide (CO2)
Methane (CH4)
Nitrous oxide (N2O)
Ozone (O3)
Fluorinated gases (CFCs)
U.S. Greenhouse Gas Emissions in 2010

5. Greenhouse Effect
The Greenhouse Effect is the
effect of greenhouse gases in
the Earth’s atmosphere
trapping heat that is released
from the Earth.

6. Greenhouse Gases Sources
Most greenhouse gases have both natural and
human-caused sources
Carbon dioxide
Burning fossil fuels (coal, natural gas and oil)
Solid waste, trees and wood products, and also as a
result of certain chemical reactions

7. Greenhouse Gases Sources
Nitrous oxide
Agricultural and industrial activities
Combustion of fossil fuels and solid waste.
Methane
Production and transport of coal, natural gas, and oil.
Livestock and other agricultural practices.

8. Impacts
Physical impacts
Social systems
Biological systems

9. Physical impacts
Extreme weather
Heat waves
Tornadoes
Thunderstorms
Cold waves

10. Physical impacts
Glacier retreat and disappearance
Future changes in glaciers:
Mountainous areas in Europe will
face glacier retreat
In Polar regions, there will be
reductions in glacier extent and
the thickness of glaciers.

11. Physical impacts
Ocean acidification
The ongoing decrease in the pH
of the Earth 's oceans , caused by
the uptake of carbon dioxide
from the atmosphere .
This ongoing acidification of the
oceans poses a threat to the
food chains connected with the
oceans.

12. Social systems
Food supply
Increasing the frequency of extreme events, and
modified weed, pest, and pathogen pressure.
Low-latitude areas are at most risk of having decreased
crop yields.
Health
Change the range of some infectious disease vectors.
e.g Mosquito can infect malaria.

13. Biological systems
Extreme weather
Global warming had strongly
affected natural biological
systems, such as plants and
animals
In the Northern Hemisphere,
species are almost uniformly
moving their ranges northward
and up in elevation in search of
cooler temperatures.

14. What We Can Do?
Government
Reduce emissions of greenhouse gases
Improve the energy efficiency and vehicle fuel economy.
Increases the renewable sources, such as wind, solar
power, hydrogen sources, biofuels resource
Set up laws to reduce emissions from factories

15. What We Can Do?

16. Low-carbon Life
Low-carbon life means lifestyle to
minimize the energy
consumed, thereby reducing carbon
dioxide emissions.
less meat
more bicycles
less light

17. Reference
Climate changes. (2007). BBC Weather Centre. Accessed at
http://www.bbc.co.uk/climate/evidence/carbon_dioxide.shtml
Etheridge, D. M., Steele, L. P., Langenfelds, R. L., Francey, R. J.,Barnola, J.-M., &
Morgan, V. I. (1996). Natural and anthropogenic changes in atmospheric CO2 over the
last 1000 years from air in Antarctic ice and firn. Journal of Geophysical Research, 101,
4115–4128. doi:10.1029/ 95JD03410.
Keeling, C. D. (2007). Atmospheric CO2 calculations derived from in situ air samples
collected at Mauna Loa observatory, Hawaii. Accessed at
http://cdiac.ornl.gov/ftp/trends/co2/maunaloa.co2
Bogan, R., Ohde, S., Arakaki, T., Mori, I., & McLeod, C. (2009). Changes in Rainwater pH
associated with Increasing Atmospheric Carbon Dioxide after the Industrial Revolution.
Water, Air & Soil Pollution, 196(1-4), 263-271. doi:10.1007/s11270-008-9774-0
Sea level: Climate Change. (2010): US EPA. Publisher: US EPA. Accessed at:
www.epa.gov/climatechange/science/indicators
Lobell DB, Burke MB, Tebaldi C, Mastrandrea MD, Falcon WP, Naylor RL (2008).
"Prioritizing climate change adaptation needs for food security in 2030". Science 319
(5863): 607–10. doi:10.1126/science.1152339. PMID 18239122.

18. Thank You!