GLOBAL WARMING
GLOBAL WARMING
What is global warming?
Difference
GLOBAL WARMING
is the increase of the Earth’s average surface temperature due to a build-up of greenhouse gases in the atmosphere.
CLIMATE CHANGE
is a broader term that refers to long-term changes in climate, including average temperature and precipitation.
Basic Question of Global Warming
1. What causes the earth’s climate to change?
1. Green House Effects
Example : carbon dioxide (CO2), Methane, Ozone, Nitrous oxide, Sulfur Hexafluoride, Hydrofluorocarbons and etc.
The Sun’s energy
passes through the
car’s windshield.
This energy (heat)
is trapped inside
the car and cannot
pass back through
the windshield,
causing the inside
of the car to warm
up.
Example of the
Greenhouse Effect
What are the causes of global warming ?
Man-made causes Natural causes
Melting of glaciers
Polar Bear
Extinction
Increased probability and intensity of droughts and heat waves
THESE…..
WHERE IS my
habitat…!!!
THIS….
ANTARCTICA – losing ice faster..!!!!!!
BEFORE NOW
CO2 from
airplanesCO2 from
vehicles
How Global Warming Works
Fossil fuels (coal, oil, natural gas)
Carbon Dioxide (CO2)
Greenhouse gases
At some places, it
At others……
SOMEWHERE it’s tooo…….ooo
HOT
WHEREAS At others tooo…..
COLD
THE HUMAN BEINGS
Most scientists blame industrialization:
Automotive Industry (low fuel economy)
Oil companies (fossil fuels)
BECAUSE OF HIS GREEADY
NEEDS LIKE...
Power plants (coal)
Agri-business (biofuels, deforestation, cattle producing methane)
Logging Industry (deforestation)
• From 1971 to 2005 CO2 vehicle emissions rose from 1.8 billion tons per year to 4.6 billion tons per year.
• The average global air temperature rose between 0.5 and 0.74 degrees C during the past century.
• An average 2 degrees C warming is predicted by 2100.
• Sea level has risen between 10 to 25 cm in the last 100 years.
The Earth is getting warmer.
What causes the warming is
hotly debated.
The Argument:
Human causes
(Anthropogenic): Carbon dioxide (CO2) exhaust from cars
and power plants.
Methane gas from waste
Deforestation
The Argument:
Natural causes: Some claim the sun is getting hotter. Also, the earth goes through natural cycles of climate change.
Evidence that CO2 is Cause
carbon dioxide vs. global temperature graph
Is Global Warming for Real?
By: - Rakesh S Sajjan