Global Warming Presentation - Seminar In Business Communication

Presentation on

By: M. Faisal Panawala

THE GREATEST TH REAT

Introduction Global warming, a recent warming of the Earth's lower atmosphere, is believed to be the result of an enhanced greenhouse effect due to increased concentrations of greenhouse gases in the atmosphere.

Effects of Global Warming Extreme Weather  Melting Ice Sheet & Glaciers  Raising Sea Levels  Effects on Agriculture  Effects on Plant & Animals  Human Health  Forest Fires 

Extreme Weather 

Storms are expected to be more frequent and more intense in a warmer world. Water will also evaporate more rapidly from soil, causing it to dry out faster between rains. Some regions might actually become drier than before

Ice Sheets & Glaciers

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Warming temperatures are already causing significant changes to mountain glaciers around the world, ice sheets in Greenland and the Antarctic, and polar

Source ACIA, 2004 Jennifer Allen Animation

Sea Levels 

As the atmosphere warms, the surface layer of the ocean warms as well, expanding in volume and thus raising sea level. The melting of glaciers and ice sheets, especially around Greenland, further swells the sea.

Effects on Agriculture 

For some time it was hoped that a positive effect of global warming would be increased agricultural yields, because of the role of carbon dioxide in photosynthesis but climate change will

Effects on Animals        

Polar bears Polar bears Walruses Walruses Ice seals seals Black guillemots Black guillemots Kittiwakes Kittiwakes Salmon Salmon Caribou Caribou Arctic grayling Arctic grayling

 Rising temperatures  Shrinking habitat  Food harder to get  Expanding disease

International Health Impacts 

Increased epidemics of malaria in Africa and new cases in Turkey and elsewhere

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Increased cerebralcardiovascular conditions in China; dengue fever in SE Asia

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In Europe, increased heat wave deaths (52,000 in 2003, (EPI 2006)), typhoid fever, Vibrio vulnificus, Ostreopsis ovata, Congo Crimea hemorrhagic fever

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More mercury release; flooding; and storms

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WHO: million double

Canadian Ministry of Forests

West Nile virus mosquito vector

150,000 deaths and 5 illnesses/year from GW; by 2030 (Nature 2005) USFS photo

Ocean Acidification Over the last 200 years, about 50% of all CO2 produced on earth has been absorbed by the ocean. (Royal Society 6/05)

Remains in the atmosphere (greenhouse gas)

Dissolves in sea water

CO2 + H20

HCO3- + H+ (ACID)

Water becomes more acidic.

CO2

CO2

Forest Fires 4.6 million acres burned in 2005

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6.6 million acres 6.0 burned in 5.0 4.0 2004 3.0 millions of acres

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Alaska Acres Burned 1956-2005

Bureau of Land Management John McColgan photo

2.0 1.0

1960

1970

1980

Source: NOAA National Climate Data Center

1990

2000

Causes of Global Warming 

Green House Effect: The name comes from an incorrect analogy with the warming of air inside a greenhouse compared to the air outside the greenhouse. The greenhouse effect was discovered by Joseph Fourier in 1824 and first investigated quantitatively by Svante Arrhenius in 1896.

Types of Green House Gases 

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Carbon dioxide: The process of burning invariably emits carbon dioxide. Burning fossil fuels like diesel, petrol, or gas is a major carbon dioxide producer. The smoke emitted by various industries and factories, coal fired electrical power plants, using fire wood as fuel all add to the total carbon dioxide levels Methane: Dumped, decaying garbage is a source of methane and cow dung also emits methane. To some extent these methane can be made use as a fuel for cooking purpose by setting up bio-gas plants which is fuelled by cow dung or by bio-degradable waste. Nitrous Oxide: Released primarily by plowing farm soils and burning fossil fuels. Nitrous oxide traps about 300 times more heat than does the same amount of carbon dioxide. Nitrous oxide is also released during various agricultural and industrial processes. Chloro Fluro Carbons: Are widely used in refrigerators, air conditioners and in aerosol sprays. The chloro fluro carbons cause global warming by damaging the ozone

Preventing Global Warming 

Drive less. Take bikes, walk or carpool whenever possible.

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Replace all the light bulbs in and around your home with energy-efficient fluorescents that use fewer watts for the same amount of light

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Choose energy-efficient appliances when it's time to buy new ones.

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Decrease your air travel.

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Cut down on your garbage—buy fewer packaged materials to prevent further global warming.

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Unplug electronics when they are not in use, because they still take up energy. At the very least, turn items

Preventing Global Warming .. Cont’ 

Plant a tree.

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Buy recycled paper products and recycle as much of your waste as possible & use paper bags when shopping

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Use nontoxic cleaning products.

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Keep your car tuned up, and check tire pressure often to save gas.

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Spread the word

Thank You for Your time For understanding the most important Global Issue