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