This ppt says about how human induced climate

1. HUMAN -INDUCED CLIMATE CHANGE

2. Content
 Defination of Climate ,Climate Change
Causes of Climate Change -
 Natural Causes & Human Causes
Effects of Climate Change
How do Scientists projects future climate change
Case Studies
Conclusion
References

3. Definations
• Climate:- Climate is the average weather in agiven area
over alonger period of time.
• Climate Change:-
• climate change refers to changes long period of time.
• world wide, people are paying serious attention to
climate change.
• Because so many system are tied to climate, such people
,plant animals,availability and use of water and health
risk.

4. Causes of Climate Change -
Natural Causes;-
a. Volcanic Erruption
b. Ocean Currents
c. Earth Orbital Changes
d. Solar variation
Human Causes
a. Green House gases
b. Deforestration
c. Coal mining
d. Burning of fossil fuels
e. Industrial processes

5. Volcanoes
• The gases and dust particles
thrown into the atmosphere
during volcanic eruptions have
influences on climate. Most of
the particles spewed from
volcanoes cool the planet by
shading incoming solar
radiation. The cooling effect
can last for months to years
depending on the
characteristics of the eruption

8. Human induces
• Deforestration:-Deforestation is an important factor in global
climate change. It is well known that deforestation is a big problem in
the world today, with hundreds and even thousands of vulnerable
forest being cut down both for tinder and to make way for arable
farmland for cows and other livestock.
Main Causes of Deforestation
I. Wood and Timber
II. Farmland
III. Paper
IV. Minning
V. Urbanization

9. Effects of Deforestation on Climate
• With so many hundreds of thousands of square miles of forest
being cut down each and every year (approximately 46 – 58
thousand), many of the biggest carbon sinks in the world are
being shrunk drastically.
• GLOBAL WARMING:-more and more carbon dioxide in the
atmosphere more heat is being trapped, raising temperature.
• Weather pattern:-Weather deforestation also affects the
amount of this in the air.
• Water cycle:-Trees contribute a great deal to the water cycle,
and forests are particularly useful for regulating the way that
rain is recycled back into the atmosphere.
• Ocean acidification :-increase in the average pH of the
oceans.

10. GREEN HOUSE GASES
• Carbon dioxide is a greenhouse gas,
which means that it traps infrared rays
from the sun and keeps heat in the
Earth’s atmosphere.Greenhouse gases
cause the greenhouse effect.
• Earth's atmosphere are water vapor,
carbon dioxide56%, methane18%,
nitrous oxide7% and ozone7%.
• Clouds are water droplets or ice
crystals suspended in the
atmosphere.

11. COAL MINING
Coal is the single biggest contributor to anthropogenic climate change. The
burning of coal is responsible for 46% of carbon dioxide emissions
worldwide and accounts for 72% of total greenhouse gas (GHG) emissions
from the electricity sector.
Effects on climate:-
 Impacts on air quality:-Coal mine methane, less prevalent in the
atmosphere than co2 but times powerfulasa green housegas.
 carbon monoocide (co),carbondioxide(co2),methane(CH4)etc.
Acid mine Drainage:-Acid water from metal mines or coal mines.
water leakes ground water contamination.
 Loss of flora and fauna.
 degradation of soilquality and fertility.

12. Burning of fossil fuels
• Burning any carbon based fuel
converts carbon to carbon dioxide.
Unless it is captured and stored, this
carbon dioxide is usually released to
the atmosphere. Burning fossil fuels
releases carbon that was removed
from the amosphere millions of
years ago by animal and plant life.
This leads to increased
concentrations of carbon dioxide in
the atmosphere.

13. Industrial Process
• Since the Industrial Revolution began around 1750, human
activities have contributed substantially to climate change
by adding CO2 and other heat-trapping gases to the
atmosphere. These greenhouse gas emissions have
increased the greenhouse effect and caused Earth's
surface temperature to rise
• EFFECTS
• Amongst other things industrial process can cause climate
change, pollution to air, water and soil, health issues,
extinction of species, and more.

14. EFFECTS Of Climate Change And How
Rise in the sea level
Heavy Rain fall -Across
the globe
Extreme drought
Decline in the crop
productivity
Ecosystem Rechainging
Hurricans

15. How do scientists project future climate change?
• Scientist try to account for these uncertainities by
developing different scenarios of future emmisions and
climate forcing- based on
• socio economic
• technological
• policy
• including population growth
• Scientist use different models to project how climate system
will respond to different scenerio.

16. CASE STUDIES
Nallamalla Forest
• Amrabad Tiger Reserve, one of the two reserves in Telangana, a proposal
from Department of Atomic Energy being given an ‘in-principle’ approval
for exploratory drilling for uranium ore in 76 sqkm inside the reserve.
Amarabad Tiger Reserve is home to about 24 tigers and boasts of a rich
array of wildlife including leopard, sloth bear, wild dog, different kinds of
deer among other animals. The hilly tiger reserve, part of the Nallamala
hills, also serves a as a catchment area for River Krishna which flows
through the hill range. the area being sought for mining are rich in RARE
wildlife and RARE plant species. Environmental damage, contamination
resulting from leakage of chemicals” that will affect the health of native
wildlife.

17. CONClUSION
• Responding to climate Change is about making
choices in the face of risk.Any course of action carries
potential risk and costs.
• But doing Nothing may pose the greatest risk from
climate change and its impact.
• Lets save our future.

18. Reference
• Evidences,impact, and choices National
research council of the national acadamics
• https://www.eartheclipse.com/climate-
change/how-does-deforestation-affect-climate-
change.html