Download AKissTalk2

yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

IPCC Fourth Assessment Report wikipedia, lookup

Climate change, industry and society wikipedia, lookup

Surveys of scientists' views on climate change wikipedia, lookup

Public opinion on global warming wikipedia, lookup

Scientific opinion on climate change wikipedia, lookup

Climate change feedback wikipedia, lookup

Solar radiation management wikipedia, lookup

Climate change and poverty wikipedia, lookup

Attribution of recent climate change wikipedia, lookup

Climate change in the United States wikipedia, lookup

Climate change and agriculture wikipedia, lookup

Global warming wikipedia, lookup

General circulation model wikipedia, lookup

Citizens' Climate Lobby wikipedia, lookup

Global warming hiatus wikipedia, lookup

Climate change in Tuvalu wikipedia, lookup

Carbon Pollution Reduction Scheme wikipedia, lookup

Instrumental temperature record wikipedia, lookup

Politics of global warming wikipedia, lookup

Climate engineering wikipedia, lookup

Global warming controversy wikipedia, lookup

Fred Singer wikipedia, lookup

Climate change in the Arctic wikipedia, lookup

2009 United Nations Climate Change Conference wikipedia, lookup

Effects of global warming on Australia wikipedia, lookup

Mitigation of global warming in Australia wikipedia, lookup

Business action on climate change wikipedia, lookup

Low-carbon economy wikipedia, lookup

Years of Living Dangerously wikipedia, lookup

United Nations Framework Convention on Climate Change wikipedia, lookup

Climate change mitigation wikipedia, lookup

Climate change in New Zealand wikipedia, lookup

Climate change in Canada wikipedia, lookup

Effects of global warming on oceans wikipedia, lookup

Future sea level wikipedia, lookup

Climate-friendly gardening wikipedia, lookup

Greenhouse gas wikipedia, lookup

Global Warming
by Alex Kiss
Natural Warmth
The Earth’s surface is heated primarily by
 It radiates long wavelength photons of
Infrared (IR)
 Certain “greenhouse” gases trap some
escaping radiation, exciting them to
vibrate and rotate, effectively heating the
air. Examples: CO2, CH4, N2O, O3, H2O
Without this natural “greenhouse effect”
acting as a blanket, temperatures near the
surface would be around -18°C (0°F)
 Instead the average is 15°C (59°F), which
is warm enough to assure a liquid ocean
and conditions suitable for life
Since the Industrial Revolution, atmospheric
concentrations of naturally occurring greenhouse
– Carbon dioxide has increased by 30%
– Methane has more than doubled
– Nitrous oxide has risen by more than 15%
Hydrofluorocarbons (HFCs), perfluorocarbons
(PFCs), and sulfur hexafluoride (SF6), are
unnatural and highly effective greenhouse gases
generated in a variety of industrial processes.
Where Do They Come From?
Combustion of fossil fuels to run cars and trucks, heat
homes and businesses, and power factories
contributes to:
– 98% of U.S. carbon dioxide emissions
– 24% of methane emissions
– 18% of nitrous oxide emissions
 Methane is emitted during the production and
transport of coal, natural gas, and oil, from the
decomposition of organic wastes in landfills, and from
the raising of livestock.
 Nitrous oxide is emitted during industrial and
agricultural activities as well as the combustion of
solid wastes and fossil fuels.
Climate Change
Average global surface temperature has
increased 0.5-1.0% since the end of the 19th
 The 20th century’s 10 warmest years occurred in
the last 15 years of the century, 1998 being the
 Snow cover in the northern hemisphere and
floating ice in the Arctic Ocean have decreased.
 Globally, sea level has risen 4-8 inches over the
last century
Future Predictions
Increasing concentrations of greenhouse gases
are likely to accelerate the rate of climate
 Scientists believe average global surface
temperatures could rise by 2.2-10°F in the next
 Evaporation will increase in the next century,
increasing average global precipitation. Also,
Intense rainstorms are likely to become more
 Sea level is likely to rise two feet along most of
the U.S coast.