global warming

72
GLOBAL WARMING

Upload: uday-kakkar

Post on 11-Apr-2017

117 views

Category:

Education


0 download

TRANSCRIPT

Page 1: Global warming

GLOBAL WARMING

Page 2: Global warming

Global Warming is the increase of Earth's average surface temperature due to effect of greenhouse gases, such as carbon dioxide emissions from burning fossil fuels or from deforestation, which trap heat that would otherwise escape from Earth. This is a type of greenhouse effect.

Page 3: Global warming

FACTS ABOUT GLOBAL WARMING

• Emissions like carbon dioxide, nitrous oxide and other greenhouses gases will remain in the atmosphere for many years making impossible to eliminate global warming for several decades.

• Since 1880, the average temperature has risen by 1.4-Fahrenheit degrees• The Arctic is one of the worst places to be effected by global warming.• Humans are emitting more carbon dioxide in the atmosphere, faster  than

the absorbing rates of plants and the oceans.• 200o-2009 has been the hottest decade periods of the earth.•  Between 2000-2100, the heat related deaths will rise by 150,000.• Droughts, hurricanes, wildfires, extinction on endangered species, melting

of polar ice caps, storms are few of the effects of global warming.

Page 4: Global warming

 How does Global Warming work?

(a) Earth absorbs most of the sunlight it receives(b) Earth then emits the absorbed light's energy as infrared light (c) greenhouse gases absorb a lot of the infrared light before it can leave our atmosphere(d) being absorbed slows the rate at which energy escapes to space; and (e) the slower passage of energy heats up the atmosphere, water, and ground.

Page 5: Global warming

Discovery of global warming

Page 6: Global warming

1800-1870Level of co2 measured in ancient ice is 290ppm (parts per million )18 24Fourier calculates that earth would b more colder if it lacked atmosphere 1859Tunstall discovered some gas block infrared radiation 1896Arrhenius publishes first calculation of gw from human emission of co21930Milankovitch propose orbital change as the cause of ice age 1956Ewing and donn  offer feedback of quick ice age onset1970First earth day Creation of US national oceanic and atmospheric administration 

Page 7: Global warming

1981 IBM personal computer introduced1982Strong gw since 1970s reported 1981 was the warmest yr on record 1995Reports detect serious warming likely to be in the coming century2002

Global dimming due to pollution 2003Concern about collapsing ice sheets Rise in the sea level 

Page 8: Global warming

2004Major books,movie and artwork featuring gw appear2009Experts warn abt gw arriving faster 2012Heat waves,droughts,extremes of precipitation made worse by gw2013Atmosphere is warning and oceans have continued to get rapidly warmer

Page 9: Global warming

Causes

• The Co2 concentration increased in atmosphere about 30% due to human activities.

• It is predicted that we’ll soon reach carbon dioxide concentrations that haven’t been seen on Earth in the last 50 million years.

Page 10: Global warming

1. Deforestation

• The use of forests for fuel is one cause of deforestation.

• We are chopping forests which is not a good sign and has also leads to de-crease in rainfalls

• deforestation releases large amounts of carbon

Page 11: Global warming

2. Methane and Nitrous oxide emissions

• From agriculture, Arctic sea beds and factoriesmethane gas.

• As methane escapes from the Arctic seabed, the rate of global warming increases, accordingly.

• With the increase in the amount of concentrated livestock production, the levels of methane released into the atmos-phere is increasing.

Page 12: Global warming

3. Aerosols

They scatter and absorb solar and infra-red radiation.

They may change the micro-physical and chemical properties of clouds and possibly their lifetime and extent

Page 13: Global warming

4. Sea level

Increase in sea levels is the result of melting of two massive ice sheets in Antarctica and Greenland as researched by scientists.

Many nations around the world will experience the effects of rising sea levels, which could displace millions of people,

Page 14: Global warming

5. Water Vapor

• Water vapor is increasing in the atmosphere due to carbon dioxide-induced warming.

• Two-thirds of the heat trapped by greenhouse gases is contained in water vapor, and as the average temperature on the planet to raises.

Page 15: Global warming

6. Fossil Fuels

Each time a fossil fuel burn, carbon dioxide levels in the atmosphere increase.

CO2 absorbs infra-red energy emitted from the earth’s surface, preventing it from returning to space.

Page 16: Global warming

7. Population Increase

• As the population on Earth increases, food and housing demands along with other basic necessities also increase.

Page 17: Global warming
Page 18: Global warming

GLOBAL WARMING A CAUSE FOR HUMAN EXTINCTION???

Page 19: Global warming

• No population of a large vertebrate animal in the history of the planet has grown that much, that fast, or with such devastatig consequences to its fellow earthling.

• No population of a large vertebrate animal in the history of the planet has grown that much, that fast, or with such devastating consequences to its fellow earthling.

• No population of a large vertebrate animal in the history of the planet has grown that much, that fast, or with such devastating consequences to its fellow earthling.

• Forty percent of the planet’s land is devoted to human food production, up from 7 percent in 1700.

Page 20: Global warming
Page 21: Global warming
Page 22: Global warming

IMPACT OF GLOBAL

WARMING

Page 23: Global warming
Page 24: Global warming

POTENTIALWHAT IT IS DOING; AND WHAT IT CAN DO AND AT WHAT SCALE.

Page 25: Global warming
Page 26: Global warming

SCARY ENOUGH?LETS JUST BE HUMANS(SELFISH)

- AND TALK ABOUT WHAT IT WILL DO TO US FIRST.

Page 27: Global warming

• Temperatures will continue to riseACTUAL SUMMERTIME SADNESS

• Changes in precipitation patternsALL YEAR ROUND RAINS?

• More droughts and heat wavesNOT COOL. CANT SEE MORE FARMERS DIE.

• Hurricanes will become stronger and more intenseFLYING HOUSES, MORE FLOODS, AND DESTRUCTION ALL OVER.

• Sea level will rise 1-4 feet by 2100HIGH TIDE ALL TIME? NO MARINE DRIVE? SCUBA DIVING HAJI ALI?

• Arctic likely to become ice-freeNO POLAR BEARS, NO PENGUINS?

Page 28: Global warming
Page 29: Global warming

One area of particular concern is the Himalayans. 1/3 of the worlds fresh drinking water comes from the run off from this glacier system.

A direct consequence from our polluting actions will be the disappearance of these vital glaciers.

What will happen to those couple billion who depend on this previously reliable water source?

REST OF THE WORLD, 3.2 billion people

will experience water scarcity

400 to 600 will be threatened by hunger generated by global warming

Each year an additional 2 to 7 million people will be victims of coastal flooding

LETS TALK ABOUT INDIAN SUBCONTINENT

Page 30: Global warming

It’s impacting every notch of our delicately balanced ecological system, such as Animals( we have no right to melt

down their homes, or cut down their forests)

Viruses( Diseases will spread faster than ever)

Migration habits

279 species of plants and animals have responded to global warming, migrating closer to the poles.

Page 31: Global warming

LETS JUST SEE AROUND THE

WORLD

Page 32: Global warming
Page 33: Global warming
Page 34: Global warming

Diseases?They can kill us faster than ever if this doesn’t

stop.

Page 35: Global warming
Page 36: Global warming

Threat to flora and fauna

Global warming rampage wont spare these innocent beings also. Lets not forget, its

their home equally.

Page 37: Global warming
Page 38: Global warming

The WWF recently released their expectations, according to their research, a raise of 2-3C will transform 60% of the Amazon forest (home to 2/3 of the worlds plant species) into a arid savanna. The number of problems that will erupt from such an event are endless.

Page 39: Global warming
Page 40: Global warming
Page 41: Global warming
Page 42: Global warming

Air Pollution

Health Issues

Plants

Animals

Page 43: Global warming

Acid RainEutrophication

Marine Life

Food Supply

Page 44: Global warming

Impact on Food Supply

Reduced yields

Increased irrigation

Planting and harvesting changes

Decreased arability

More pests

Risks to fisheries

Page 45: Global warming

Economic Impacts

Ecotourism

Lost Productivity

Mass Migration and Security threats

Coping Cost

Damage to property and Infrastructure

Page 46: Global warming

Solutions to Global Warming

Page 47: Global warming

Environmental Value Systems

Ecocentrism Anthropocentrism Technocentrism

Page 48: Global warming

Air PollutionEcocentric Anthropocentrism Technocentrism

• Odd-Even Ban• Green Tax

• Electric Cars• Renewable Energy

Page 49: Global warming

Increasing Evaporation

Ecocentric Anthropocentrism Technocentrism

• Water Cuts• Shade Balls• Cloud Seeding

Page 50: Global warming
Page 51: Global warming

Shade Balls

Page 52: Global warming

Burning of Plastic Bottles

Ecocentric Anthropocentrism Technocentrism• Reduce• Reuse• Recycle

• Edible Bottles• Paper Water Bottles

Page 53: Global warming
Page 54: Global warming

Solutions Implemented by Countries

•Implementing policies

•Green Taxes

•Carbon Credits

Raj Mehta
The top five countries share in common smart policies and commitments to get their energy from renewable sources. In fact, Finland, with a goal to reach carbon-neutrality by 2050, already derives almost two-thirds of its electricity from renewable or nuclear energy.Read more at: http://phys.org/news/2016-02-world-ecosystems-human-health.html#jCpeep pollution tax on trucks has resulted in a 19-20% reduction in the number of commercial vehicles entering the city and a 35% drop in particulate matter load from trucks, the Environment Pollution Control Authority said in its status report filed in the court on Thursday.The move, imposed in October 2015, has also led to a 31% reduction in oxides of nitrogen ( NOx) pollution from trucks and other commercial vehicles, EPCA said in its report based on a survey commissioned by the Centre for Science and Environment (CSE).
Page 55: Global warming

The Difference between global warming and

climate change

Page 56: Global warming

What Do you picture when I say Global warming

And What do you picture when I saw climate change

Page 57: Global warming

According to a research done at Yale university , when people were asked the same question here is what they

replied

Page 58: Global warming
Page 59: Global warming
Page 60: Global warming

So Global warming is a more known phenomenon as 79 % of people know about it

Global warming is perceived as more dangerous and serious

While scientists go with climate change

But causes of both are nearly same

Page 61: Global warming

Scientist go with climate change because

It is more accurate concept

It is long term

and a constant thing

while media and politicians prefer global warming due to its emotional appeal

Page 62: Global warming

Global warming is increase in earth’s temperature since industrial revolution because of green house emission ,change of land use ,burning of fossil fuels

Climate change is the long term change to whole planets ‘s climate including wind pattern ,snowfall ,rainfall ,humidity etc

climate change is a broader concept

it is much more older concept

Page 63: Global warming
Page 64: Global warming

Is global warming real ?

Page 65: Global warming

According to a new Antarctica has gained so much ice it is over balanced for the ice that the continent has lost .

From 1992 to 2010 continent gained more ice than it lost in melting

112 billion every year

There is more ice now than from 1981 to 2010

Page 66: Global warming

The truth behind all these facts

This new research is consistent with global warming data

Increase in ice is infact a outcome of global warming

Ice has only increased in east and part of west Antarctica

But rest of the continent is losing ice

And gaining ice very bad

Page 67: Global warming

Why there is increase in the ice

So increase in ice is outcome of global warming and its very bad for earth

Melting glaciers are depositing fresh water into the ocean

Fresh water freezes faster

Salt water has a much lower freezing point

Fresh water has dilutes the salt water around the continent therefore it freezes more

But water underneath the diluted layer is still warming All these are very dangerous for earth Oceans have warmed around 0.18 f in the top 700 meters alone but such a

small change is very dangerous for a big planet like earth

Earth is heating faster then predicted

Page 68: Global warming

Freezing winters

Page 69: Global warming

Why was America freezing when the glob is warming

Page 70: Global warming

Polar vortex was responsible for the freezing temperature in the us and Canada

It is a large pocket of very cold air that sits over polar region

Study claims the recent polar vortex may have been caused by melting polar ice

Warm water melts the ice and this causes warm air to be released

Warm air destabilises polar air sending cold blasts into atmosphere

As global warming continues to heats ocean freezing winters will increase

Page 71: Global warming

Bangladesh

1. Bangladesh is situated on river delta 2. This makes it very vulnerable to rising sea level 3. Scientists have predicted 13 mt rise in sea level bordering this poor country 4. But impact of global warming can be seen clearly today too 5. Thousands of people have lost their homes ,agricultural land .they are forced to

migrate 6. Floods have been a constant thing in the area but it has increased and has taken

a dangerous avatar causing massive poverty ,diseases 7. Poverty has led to human trafficking

Page 72: Global warming

THANK YOU Aryan Maniyar 51Muzammil Haider 62 Neerali Dodiya 17 Srivardhan 48Uday Jai Kakkar 38Zeel Mehta 57

Lets save this planet together