Global Global WarmingWarming

an average increase in the an average increase in the temperature of the atmosphere temperature of the atmosphere near the Earth’s surface which near the Earth’s surface which

can contribute to can contribute to changes in changes in global climate patternsglobal climate patterns

GLOBAL WARMING = CLIMATE CHANGE

Ways of determining PAST GLOBAL TEMPERATURES

•Tree rings: their width and density depend on temperature during the growing season and on the length of the growing season – which in turn depends on temperature.

•Corals: give vital clues about sea temperature.

Ways of determining PAST GLOBAL TEMPERATURES

Borehole data: tell us how heat from earth’s surface has diffused into the ground and can be used to reconstruct past temperatures.

Fossils: tell us which organisms populated at which parts of earth in the past – if the local species changes from polar bears to crocodiles, the temperature has gotten hotter.

Ways of determining PAST GLOBAL TEMPERATURES

Ice cores: when ice accumulates in polar regions or glaciers, it traps bubbles of air, giving us a sample of the atmosphere from times past. We can extract the samples from ice cores; their chemical composition gives yet more clues to temperature.

TEMPERATURE ANOMALY DURING LAST 1000 YEARS

What is CAUSING Global Warming?

water vapor (H2O)carbon dioxide (CO2)

methane (CH4)nitrous oxide (N2O),

chlorofluorocarbons (CFC’s)

When greenhouse gases block energy radiating away from

earth, they trap heat near the earth’s surface, just like a

blanket traps heat near your body, keeping you warm. Earth’s

surface temperature rises as a result: this is the

greenhouse effect.

What are the CONSEQUENCES?

A. Environmental Impact Ice Sheet and Glacier melting

Analysis Greenland Ice Sheet Melt Area

Sea levels may 'potentially' rise up to 80 meters

A. Environmental Impact

A. Environmental Impact

Intensified storms and hurricanes

NASA climatologist, Dr James Hansen, recently concluded from

his climate model simulations, "which," he wrote, "do a good job of

matching observed global climate change,” that the intensification of

hurricanes in the Atlantic basin were due to human-caused fossil

fuel emissions

B. Ecological Impact

•Impacts on terrestrial and marine animals

•Impact on Coral Reef ecosystems

C. Socioeconomic Impact

•Droughts/Flooding

Related socioeconomic impacts can include the following: • Increased loss of property and coastal habitats• Increased flood risk and potential loss of life• Damage to coastal protection works and other infrastructure• Increased disease risk• Loss of renewable and subsistence resources• Loss of tourism, recreation, and transportation functions• Loss of nonmonetary cultural resources and values• Impacts on agriculture and aquaculture through decline in soil and water quality.

D. Impact on Human Health

“Climate change can affect human health directly (ie. Impacts of thermal stress, death/injury in

floods and storms) and directly through changes in the ranges of disease vectors (ie. Mosquitoes) , weather borne pathogens, water

quality air quality,, and food availability and quality. ...”

What can we DO to prevent Global

Warming?

Step1Drive less. Take bikes, walk or carpool whenever possible.

Step2Consider investing in a hybrid or electric vehicle to help

prevent against further global warming.

Step3Replace all the lightbulbs in and around your home with energy-efficient fluorescents that use fewer watts for the

same amount of light.

Step4Clean or replace your filters monthly.

Step5Choose energy-efficient appliances when it's time to buy

new ones.

POSSIBLE WAYS TO PREVENT GLOBAL WARMING

POSSIBLE WAYS TO PREVENT GLOBAL WARMING

Step6Decrease your air travel.

Step7

Wash clothes in cold water and line-dry whenever possible.

Step8Use a low-flow showerhead, which will lessen the hot water

used but not drop your water pressure in the shower.

Step9Cut down on your garbage—buy fewer packaged materials

to prevent further global warming.

Step10Unplug electronics when they are not in use, because they

still take up energy. At the very least, turn items off when they’re not being used.

POSSIBLE WAYS TO PREVENT GLOBAL WARMING

Step11Run the dishwasher and clothes washer only when you have a

full load, and if available, use the energy-saving setting.

Step12Insulate your home better, and don’t forget to repair or replace worn caulking or weather-stripping. Insulate your water heater.

Step13

Buy recycled paper products and recycle as much of your waste as possible.

Step14

Bring your own reusable canvas grocery bags when grocery shopping.

Step15

Plant a tree.

POSSIBLE WAYS TO PREVENT GLOBAL WARMING

Step16Have an energy audit done on your home so you can find

the trouble areas and fix them.

Step17Use nontoxic cleaning products.

Step18

Shop locally for food. A farmer’s market is an excellent place to visit. And choose fresh food over frozen foods.

Fresh takes less energy to produce.

Step19Keep your car tuned up, and check tire pressure often to

save gas.

Step20Eat less meat and more organic foods in your diet to do

your part in preventing global warming.

Can we help this polar bear?

Act now and do your share…

ZALDY M. TONDOSST-1Oton National High School