This document discusses greenhouse gases and global warming. It begins by defining a greenhouse as a structure made of glass used to grow plants in cold climates. Greenhouse gases like CO2, methane, and CFCs trap heat in the atmosphere similar to how glass traps heat in a greenhouse. The four main greenhouse gases and their contributions to global warming are identified. The document then discusses the impacts of global warming, such as rising global temperatures and sea levels. Global warming is projected to increase temperatures by 1.4-5.8°C by 2100 and raise sea levels by 0.2-1.5 meters over the next 50-100 years. This will negatively impact food production, human health, and climate patterns.

1. GREEN HOUSE & GLOBAL WARMING
Name :- Darshan Rajput [16BEITV124]
Dhrumil Patel [16BEUTV123]
Ankur Sangani [16BEITV122]

2.  DEFINATION
 Green house is house of glass used for raising delicate plants in cold
countries
 It give idol situation for them
 A green house has higher temperature inside than outside because
of following facts
1. Glass walls
2. High carbon dioxide
3. Higher water vapour content of air in green house

3.  GREEN HOUSE

4.  They let short wave radiation(0.15-0.4) to pass through them
but prevent the escape of infrared radiation emitted by the
earth surface, this make inside house warmer than outside
 Some of the atmospheric gases and air pollutions have the
property similar to glass.
 These type of gases called greenhouse gases
1) CO2
2) N2O
3) CH4
4) CFC

5.  GREEN HOUSE SMILAR TO EARTH

6.  Among these CO2 is mainly responsible for green house
effect.
 Warming of earth by green house occurring since many
centuries .
 It is due to this effect that good temperature for living is
maintained on surface
 The natural green house effect is called as enhanced green
house effect.
 And due to pollutant gas cause to green house is called
enhanced green house effect

7.  INHANCED AND ENHANCED GREEN HOUSE
EFFECT

8.  GREEN HOUSE GASES
1) CO2 : It contribute 55-60%to global warming from green
house effect.
It is main source to fossil fuel burning deforestation.
2) CFC : It contribute 14-20%.
It main source because of air conditioner and
refrigerator s air leakage.
3) CH4 : It contribute18-20%.
4) N2O : It contribute 6% .Main source of agriculture,
biomass burning.

9.  GREEN HOUSE EFFECT CAUSE GLOBAL WARMING
 Global warming potential (GWP) is the ratio of the warming
caused by a substance compared to the warming caused by a
similar mass of CO2.
 The GWP of CO2 is 1.0.
 Global warming means increase in any temperature of the
earth due to green house gases.

10. Global Warming

11.  IMPACTS OF GLOBAL WARMING
I. Global temperature increase
 It is estimated that average temperature of earth may increase
by 1.4 C to 5.8 C by the year 2100 from year 1990.
 In the 20th century, the global mean temperature has
increased by about 0.6 C.
II. Rise in sea level
 With increasing global temperature polar ice caps and glaciers
will melt.
 It will also cause thermal expansion of sea water resulting in
further rice in sea level.

12. Global Average Temperature V/S Year

13.  Average global sea level will rise by 0.2 to 1.5 meters over next 50
to 100 years.
 The countries most at risk are the river delta areas of Bangladesh,
India, Egypt, Thailand and China but many small islands will also
suffer.
 The immediate effect of inundation will be crop destruction but
more importantly, the surrounding ground waters will become
increasingly saline and large areas of productive land rendered
permanently useless.
III. Effect on human health
 The global warming will lead to changes in the rainfall pattern in
many areas, thereby affecting the distribution of vector- borne
diseases like malaria, filariasis, elephantiasis etc.

14. Sea level change V/S Year

15. IV. Effect on food Production
 Global warming will reduce crop production due to increased
incidence of plant diseases and pests, explosive growths of
weeds.
 It is estimated that the yield of rice along in South East Asia
will decrease by 5% for each 1C rise in temperature.
V. Other climatic effects include unequal distribution of rain
which may results in flooding in some areas and drought in
some areas.
 In temperate regions, the summers will be longer and hotter
whereas the winters will be shorter and warmer.
 The already dry sub-tropical regions may become drier and
tropical regions may become wetter.

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