greenhouse gases and causes and impact of global warming

In the name of Allah the Most Beneficent the Most Merciful

Greenhouse Gases

Introduction

If there had been no Greenhouse Gases

(GHG) there would have been no life on earth

GHGs trap the Suns’ heat in the atmosphere

and thus make life possible.

Introduction

But due to an unnatural inc in these gases

the atmosphere and resultantly the earth are

becoming unprecedentedly hot leading to

Global warming

Aim

• to apprise about the GHGs

• to apprise about the mech by which they trap

Suns’ heat energy in the atmosphere

• to apprise about their role in global warming &

what it can lead to

Sequence

• Green House

• Greenhouse Effect

• Greenhouse Gases (GHG)

• Harmful Effects

• Conclusion

A Green House

Greenhouse Effect

If there had been no atmosphere around the Earth

its’ temp would have fallen by 30 degrees to a

frosty -15 C, making life impossible on the planet

Greenhouse Effect

GHGs are gases which though constituting even

less than1% of the total atmospheric gases are

responsible for retaining more than 90 % of the

Suns’ energy in the Earths’ atmosphere .

Greenhouse Effect

GHGs

NaturalCarbon Dioxide (CO2)Methane (CH4)Nitrous oxide (N2O)Water Vapours (H2O)Ozone (O3)

ManmadeCFCsHFCsCO

GHGs

Maj causes of inc GHGs Burning of fossil fuels Deforestation Excessive farming Industrial emissions

Harmful Effects

Harmful Effects

The Kyoto ProtocolCommits countries to reduce GHG emissions by 5% of 1990 lvls by 2012

Developing countries – including China, India, Brazil and South Africa – would face no restriction on their emissions

CONCLUSION

Global warming is a fact and is on the inc; hence

unless urgent measures are taken by all

countries the world be passing thru very catalytic

times

Greenhouse Effect

Greenhouse Gases

Lt Col Naeem Ahmed RasheedMSc 36

Greenhouse Effect

Harmful Effects

greenhouse gases and causes and impact of global warming

Environment