Презентация на тему Global Warming

temperature
Results from changes in the natural environment
Caused by

too much carbon dioxide

the Earth’s atmosphere
The surface of the Earth absorbs most

of the short-rayed insolation and later releases this heat in the form of infrared radiation into the atmosphere.
Some of the heat is absorbed by particles known as “greenhouse gases.”
The heat retained by the gases acts as a “heat blanket.”

With

releases Carbon dioxide in the atmosphere.

In the past 150 years, burning fossil fuels has caused a 25 % increase in Carbon dioxide emissions.

oxide has increased 17%.

Methane has increased 150%!!

N20

of sardines has caused higher levels of phytoplankton in

the ocean.
While living, phytoplankton release oxygen into the atmosphere and use Carbon for photosynthesis
When they die, their decay releases large amounts of methane and the poisonous gas, hydrogen sulfide. It also uses large amounts of oxygen.

more effective than carbon dioxide in maintaining heat in

the atmosphere.
This results in the deaths of numerous marine animals.

increase in plant growth.
The increase in temperature -> rise

in sea level from melting glaciers and polar ice caps (adds 0.2 mm annually)
Rising temperatures will also cause drier conditions in many important agricultural regions.

LIFE—
Coral Reef Bleaching—
Change in temperature and elevated sea

level cause loss of algae in the coral.
Coral appears white, or “bleached.”
Result is mass death of sea animals, which are dependent on the coral reef.
The penguin population near Antarctica has been declining as the distance between them and their food has increased.

a few degrees, could lead to the melting of

ice shelves that hold back glaciers. This results in rising sea levels
The Larsen area of North Antarctic, South of Chili and Argentina have lost more than 5,200 sq miles of area.

warming can disrupt the migration, hibernation and reproductive cycles

of certain types of animals.
Plants and animals will find it hard to escape or adjust to the effects of warming because humans occupy so much land.
Farmland or cities interrupt the movement of species between habitats.

the loss of life (ex: 35,000 people died during

heat wave in Europe, Aug‘03.)
Warmer weather provides an ideal breeding environment for mosquitoes. Diseases such as West Nile will be more common.

.

pollution of water and air, which harms the human

body.

.

supply of clean drinking water.
Cholera

It increases temperature providing

an ideal breeding environment for mosquitoes.
Dengue fever
Malaria
Yellow fever

More evaporation ? increase in cloud cover

How High Will

the Clouds Be? It makes a difference!
Clouds close to the earth reflect sunlight ? cooling effect.
Clouds high in the atmosphere trap heat ? warmingeffect.

Generally:
Cloud cover increases
Levels of the greenhouse gas methane may increase
Hurricanes range farther north, south on warmer water

oceanic/atmospheric disturbance,
every 7-14 yrs (“the

child”)
Warm surface waters suppress cold, nutrient-rich upwelling of the Humboldt Current
? Fall in the number of plankton
Wreaks havoc upon the entire ocean food chain
Devastates the fishing industry

reversal of the trade winds: torrential rain, flooding, and

mudslides to the usually dry coastal areas of Peru and Ecuador.

of the monsoons in Asia ? severe drought to

Indonesia and northern Australia.
Severe weather disturbances in other parts of the world, such as droughts in areas of Africa and central North America.

the United Nations Framework Convention on Climate Change (UNFCCC)

UNFCCC, an international treaty on global warming
Countries which ratify this protocol commit to reduce their emissions of carbon dioxide and five other greenhouse gases
A total of 141 countries have ratified the agreement. Notable exceptions include the United States and Australia

1997, opened for signature on March 16, 1998, and

closed on March 15, 1999
Current estimates are that even if successfully and completely implemented, the Kyoto Protocol is predicted to reduce the average global temperature by somewhere between 0.02°C and 0.28°C by the year 2050

It was negotiated in Kyoto, Japan in December 1997, opened for signature on March 16, 1998, and closed on March 15, 1999
Current estimates are that even if successfully and completely implemented, the Kyoto Protocol is predicted to reduce the average global temperature by somewhere between 0.02°C and 0.28°C by the year 2050

Continued..

On Climate Change
Article 2 (iv)

Research on, and promotion, development and increased use of, new and renewable forms of energy, of carbon dioxide sequestration technologies and of advanced and innovative environmentally sound technologies
(vi) Encouragement of appropriate reforms in relevant sectors aimed at promoting policies and measures which limit or reduce emissions of greenhouse gases not controlled by the Montreal Protocol;
(viii) Limitation and/or reduction of methane emissions through recovery and use in waste management, as well as in the production, transport and distribution of energy

in 2003 and reintroduced in February 2005
It would reduce

carbon dioxide, methane, nitrous oxide, hydroflurocarbon and perfuorocarbons which are released by power plants to 2000 levels by 2010.
The bill reduces the risk of global warming without hurting the economy.

use low-energy, low-water-use washing machines, 2. use a solar

heated system for hot water, 3. use an electric or push mower for gasoline powered mower)
Buy energy efficient products
Buy products that have reusable or recyclable packaging
Reduce use of car (walk instead)