3. Climate is defined as the average weather
patterns existing throughout several years
over a large portion of Earth's surface.
30-35 years.
Climate therefore varies from weather
because weather is concerned only with
short term events.
4. Natural causes of climate change.
El Niño
Earth axis
Sun spots
Meteorites and meteor
Plate tectonics
Greenhouse gases
6. Increase in temperature
Average global temperatures are expected
to increase by 2°F to 11.5°F by 2100,
depending on the level of future
greenhouse gas emissions, and the
outcomes from various climate models.
7.
8. Increase Earth's average temperature.
Influence the patterns and amounts
of precipitation.
Reduce ice and snow cover.
Raise sea level.
Increase the acidity of the oceans.
9. Low-lying south Florida, at the
front line of climate change in the
US, will be swallowed as sea
levels rise.
Astonishingly, the population is
growing, house prices are rising
and building goes on.
10. Warmer seas caused by global warming or
“coral bleaching”.
Oceanic acidification blamed on carbon dioxide
pollution which reduces the coral growth.
where corals lose their colorful symbiotic algae,
exposing their white skeletons.
11. In June 2050, people may see heavy
rainfall in southern Brazil and the west
Amazon.
In a few days, the rain will exceed the
amount expected for the entire month,
which increases the risk of heavy flooding
and disaster landslides.
12. Drought is a condition which faces the
shortage of water.
Mega droughts have occurred throughout
history, roughly every 400 to 600 years.
The last mega drought to plague the U.S.
occurred in the western U.S. in the mid-
12th century.
Exceptional drought, the most severe
category, afflicts over 58 percent of
California.