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Over the past 10-15 years there has been growing concern over changes in the
climate and the possibility that these changes are linked to human activity.
Perhaps the peak in concern came during the summer of 1988 when the US
experienced the worst summer in terms of heat and drought in its history.
Globally, the 1980's were the warmest decade in recorded history.
Atmospheric scientists are concerned that these climactic extremes are the
result of a trend launched by CO2 emissions accompanying the industrial
revolution. The impact of CO2 on the atmosphere has been to enhance the
so-called "Greenhouse Effect." While the heavy debate that has accompanied
discussions on global warming has led to as many questions as purported
answers, one thing is not in question: The greenhouse effect is a real effect
and is one of the firmer theories in atmospheric science.
Greenhouse gases are the collective chemicals that make up the Earth’s atmosphere
that help keep the temperature of the Earth’s surface relatively constant. This is
done by maintaining a balance between the sunlight that is reflected from the
Earth’s surface and the infrared radiation that is absorbed by the greenhouse gases
and trapped in our atmosphere. The process of absorption is what we refer to as the
greenhouse effect.
                                         Many gases contribute to the greenhouse
                                         effect, some of them are naturally
                                         occurring such as water vapour, carbon
                                         dioxide, methane, nitrous oxide and ozone.
                                         Others are exclusively man-made such as
                                         chemicals          from           aerosols.
Listing some Greenhouse Gases:
 Carbon Dioxide
 Carbon Dioxide is the most prominent greenhouse gas in the Earth’s
 atmosphere. It has been made even more abundant through the human
 process of removing the naturally occurring carbon from the earth in the
 form of coal, oil and natural gas, and burning it for fuel, releasing it into
 the         atmosphere            in        incredible            quantities.

 When we talk about anthropogenic carbon emissions we are referring to
 such things as burning fossil fuels (coal, oil, natural gas) and clearing of
 forests which removes large swathes of potential sources of
 photosynthesis…and human exhalation. At a time when it is becoming
 increasingly imperative that we reduce our carbon emissions, the
 evidence points to the fact that they are still increasing.
The Carbon Cycle
Levels of carbon dioxide in the atmosphere are
controlled in nature by a process known as the
“carbon cycle”. The movement of carbon is
controlled between the air, land and water by natural
processes such as photosynthesis, respiration and
decay. While natural processes can handle some of
the anthropogenic (caused by humans) carbon
dioxide emissions produced each year, there is an
estimated 3.2 billion metric tons added to the
atmosphere annually. It’s this growing imbalance
between emissions and absorption that is attributed
to the increase in greenhouse gases in the
atmosphere.
Methan
 e
Another greenhouse gas that is contributing to the problem of global
warming is methane. High levels of methane are produced from landfills
when open dumps and waste decomposes under anaerobic conditions. It
is also released as part of the coal mining process when trapped methane
is released into the atmosphere. Significant amounts of methane are also
naturally produced by livestock as part of their digestive system. Rice
cultivation produces quite high levels of methane due to the flooding
process which promotes anaerobic decomposition or organic matter in
the                                                                 soil.

Each year around 350-500 million tons of methane from human related
activities are released into the atmosphere adding to the greenhouse
gases. The problem lies in the fact that methane is 20 times effective at
trapping in heat than carbon dioxide.
Nitrous
Oxide
Better known to most people as laughing gas, this is the stuff
that we use as an anaesthetic but it’s a naturally occurring gas
and one of our greenhouse gases. It is released naturally from
the ocean and by bacteria in the soil. Humans add up to 15
million tons into the atmosphere through nitrogen-based
fertilizers, sewerage treatment and car exhausts. Nitrous oxide
emissions need to be reduced because it stays trapped in the
Earth’s atmosphere for a long time.
Today, the increase in the Earth's temperature is increasing with
unprecedented speed. To understand just how quickly global
warming is accelerating, consider this:
                                     During the entire 20th century, the
                                     average     global     temperature
                                     increased by about 0.6 degrees
                                     Celsius (slightly more than 1
                                     degree Fahrenheit).

                                     Using computer climate models,
                                     scientists estimate that by the year
                                     2100       the     average    global
                                     temperature will increase by 1.4
                                     degrees to 5.8 degrees Celsius
                                     (approximately 2.5 degrees to 10.5
                                     degrees Fahrenheit).
A carbon footprint is a measure of the impact our activities
have on the environment, and in particular climate change. It
relates to the amount of greenhouse gases produced in our
day-to-day lives through burning fossil fuels for electricity,
heating and transportation etc.

                      The carbon footprint is a measurement
                      of all greenhouse gases we individually
                      produce and has units of tonnes (or kg)
                      of carbon dioxide equivalent.
The Carbon Footprint specifically counts how much
    greenhouse you expel, minus how much you take back
    in, in your daily life. Here's a few tips :
General
   Use vegetable-based and biodegradable products of all
    kinds: From plastics to bio-diesel, from soaps &
    detergents to computer parts & rail road ties, nearly
    everything can now be made from renewable resources
    at competitive/cheaper prices. Ask your merchants to
    find them for you!
At the Office
 No   more plastic disposable cups! Let everyone
  bring in a mug or a glass from their home, and
  wash it in the restroom.
 Printouts are so 1990... Nothing should ever be
  printed anymore. Provide notebooks and pens
  for those who still feel like scribbling.
 Power down when you leave, from lights to
  computers, everything should be off when you
  leave the office.
At Individual Level
 Turn   off lights, television, DVD player, computer
  etc. etc. when not in use.
 Fill your dish washer and washing machine with a
  full load - this will save you water, electricity, and
  washing powder.
 Fill the kettle with only as much water as you need.
 Do your weekly shopping in a single trip.
 Hang out the washing to dry rather than tumble
  drying it.
Transportation
   Carpool - get a lift to school or work with a friend.
   Use the bus or a train.
   rather than your car.
   For short journeys either walk or cycle.
   Try to reduce the number of flights you take.
   See if your employer will allow you to work from home one
    day a week.
   Next time you replace your car - check out diesel engines. With
    one of these you can even make your own Biodiesel fuel.
   When staying in a hotel - turn the lights and air-conditioning
    off when you leave your hotel room, and ask for your room
    towels to be washed every other day, rather than every day.
As well as your primary carbon footprint, there is also a secondary footprint that
you cause through your buying habits.
   Don't buy bottled water if your tap water is safe to drink .
   Buy local fruit and vegetables, or even try growing your own.
   Buy foods that are in season locally.
   Don't buy fresh fruit and vegetables which are out of season, they may have
    been flown in.
   Reduce your consumption of meat.
   Try to only buy products made close to home (look out and avoid items
    that are made in the distant lands).
   Buy organic produce .
   Don't buy over packaged products.
   Recycle as much as possible .
   Think carefully about the type of activities you do in your spare time. Do
    any of these cause an increase in carbon emissions? e.g. Saunas, Health
    clubs, restaurants and pubs, go-karting etc..
Around Your home
Reduce heat loss in your home
The picture below illustrates some of the main causes of heat loss in a typical house and
provides some suggestions on how this can be reduced.

                           Through the roof - install loft insulation



                                                                               Through walls - use
                                                                               cavity wall insulation
  Through windows -
   fit double glazing




                              Through gaps around doors -               Through the floor - fit
                                   fit draft excluders                   carpet with underlay
Reduce energy usage in your
 home
Within your home try to:
o Reduce the use of electrical appliances
o When replacing appliances, try to buy appliances
  which use less power and have a good energy rating
o Turn things off when not in use
o Replace standard light bulbs with their low energy
  equivalents
Recycling
Throwing things away is a waste of the energy and the resources taken
to make the product. Reducing the number of things that need to be
thrown away, reduces the amount of materials which have to be
quarried and mined.

              Reduce, Re-use, Repair and Recycle


     Reduce
      We should all avoid products with excessive packaging
      The production of the packaging uses additional energy
      The extra volume and weight will have to be transported
       (by lorries, aircraft, ships etc.)
      The packaging will be thrown out and will need to be
       collected from your home by a large waste disposal truck
      Packaging then takes more space at land fill sites
Re-use
 Everyone should try and re-use
 products for as long as feasibly
 possible. It is amazing how often
 people buy certain products and
 use them only once or twice, even
 though they can be re-used many
 times. For instance can you think
 of some items of clothing you have
 worn only once?
Recycle
  Recycling uses less energy and produces less
  pollution than making things from scratch.
  For example:-
 Making Aluminium cans from old ones uses
  one twelfth of the energy to make them from
  raw materials.
 For glass bottles, 315kg of CO2 is saved per
  tonne of glass recycled after taking into account
  the transportation and processing
 Making bags from recycled polythene takes one
  third the Sulphur Dioxide and half the Nitrous
  Oxide, than making them from scratch.
Another form of recycling is composting household
    and garden waste.

    Why compost?
   it helps fertilize soil, making plants and vegetables grow better
   using home made compost will minimise depletion of peat
    bogs
   reduces the number of refuse collections needed
   reduces the strain on land fill sites
   you may be able to get a reduced price compost bin via the
    recycle now website

  What can you compost?
 Garden waste (fallen leaves, grass cuttings and prunings)
 Kitchen waste (such as raw vegetables, fruit, crushed egg shells,
  tea leaves and tea bags)
 In addition try, shredded paper and cardboard.
The End
Vivek Kumar Sinha

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Carbon Footprint

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  • 3. Over the past 10-15 years there has been growing concern over changes in the climate and the possibility that these changes are linked to human activity. Perhaps the peak in concern came during the summer of 1988 when the US experienced the worst summer in terms of heat and drought in its history. Globally, the 1980's were the warmest decade in recorded history. Atmospheric scientists are concerned that these climactic extremes are the result of a trend launched by CO2 emissions accompanying the industrial revolution. The impact of CO2 on the atmosphere has been to enhance the so-called "Greenhouse Effect." While the heavy debate that has accompanied discussions on global warming has led to as many questions as purported answers, one thing is not in question: The greenhouse effect is a real effect and is one of the firmer theories in atmospheric science.
  • 4. Greenhouse gases are the collective chemicals that make up the Earth’s atmosphere that help keep the temperature of the Earth’s surface relatively constant. This is done by maintaining a balance between the sunlight that is reflected from the Earth’s surface and the infrared radiation that is absorbed by the greenhouse gases and trapped in our atmosphere. The process of absorption is what we refer to as the greenhouse effect. Many gases contribute to the greenhouse effect, some of them are naturally occurring such as water vapour, carbon dioxide, methane, nitrous oxide and ozone. Others are exclusively man-made such as chemicals from aerosols.
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  • 6. Listing some Greenhouse Gases: Carbon Dioxide Carbon Dioxide is the most prominent greenhouse gas in the Earth’s atmosphere. It has been made even more abundant through the human process of removing the naturally occurring carbon from the earth in the form of coal, oil and natural gas, and burning it for fuel, releasing it into the atmosphere in incredible quantities. When we talk about anthropogenic carbon emissions we are referring to such things as burning fossil fuels (coal, oil, natural gas) and clearing of forests which removes large swathes of potential sources of photosynthesis…and human exhalation. At a time when it is becoming increasingly imperative that we reduce our carbon emissions, the evidence points to the fact that they are still increasing.
  • 7. The Carbon Cycle Levels of carbon dioxide in the atmosphere are controlled in nature by a process known as the “carbon cycle”. The movement of carbon is controlled between the air, land and water by natural processes such as photosynthesis, respiration and decay. While natural processes can handle some of the anthropogenic (caused by humans) carbon dioxide emissions produced each year, there is an estimated 3.2 billion metric tons added to the atmosphere annually. It’s this growing imbalance between emissions and absorption that is attributed to the increase in greenhouse gases in the atmosphere.
  • 8. Methan e Another greenhouse gas that is contributing to the problem of global warming is methane. High levels of methane are produced from landfills when open dumps and waste decomposes under anaerobic conditions. It is also released as part of the coal mining process when trapped methane is released into the atmosphere. Significant amounts of methane are also naturally produced by livestock as part of their digestive system. Rice cultivation produces quite high levels of methane due to the flooding process which promotes anaerobic decomposition or organic matter in the soil. Each year around 350-500 million tons of methane from human related activities are released into the atmosphere adding to the greenhouse gases. The problem lies in the fact that methane is 20 times effective at trapping in heat than carbon dioxide.
  • 9. Nitrous Oxide Better known to most people as laughing gas, this is the stuff that we use as an anaesthetic but it’s a naturally occurring gas and one of our greenhouse gases. It is released naturally from the ocean and by bacteria in the soil. Humans add up to 15 million tons into the atmosphere through nitrogen-based fertilizers, sewerage treatment and car exhausts. Nitrous oxide emissions need to be reduced because it stays trapped in the Earth’s atmosphere for a long time.
  • 10. Today, the increase in the Earth's temperature is increasing with unprecedented speed. To understand just how quickly global warming is accelerating, consider this: During the entire 20th century, the average global temperature increased by about 0.6 degrees Celsius (slightly more than 1 degree Fahrenheit). Using computer climate models, scientists estimate that by the year 2100 the average global temperature will increase by 1.4 degrees to 5.8 degrees Celsius (approximately 2.5 degrees to 10.5 degrees Fahrenheit).
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  • 17. A carbon footprint is a measure of the impact our activities have on the environment, and in particular climate change. It relates to the amount of greenhouse gases produced in our day-to-day lives through burning fossil fuels for electricity, heating and transportation etc. The carbon footprint is a measurement of all greenhouse gases we individually produce and has units of tonnes (or kg) of carbon dioxide equivalent.
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  • 19. The Carbon Footprint specifically counts how much greenhouse you expel, minus how much you take back in, in your daily life. Here's a few tips : General  Use vegetable-based and biodegradable products of all kinds: From plastics to bio-diesel, from soaps & detergents to computer parts & rail road ties, nearly everything can now be made from renewable resources at competitive/cheaper prices. Ask your merchants to find them for you!
  • 20. At the Office  No more plastic disposable cups! Let everyone bring in a mug or a glass from their home, and wash it in the restroom.  Printouts are so 1990... Nothing should ever be printed anymore. Provide notebooks and pens for those who still feel like scribbling.  Power down when you leave, from lights to computers, everything should be off when you leave the office.
  • 21. At Individual Level  Turn off lights, television, DVD player, computer etc. etc. when not in use.  Fill your dish washer and washing machine with a full load - this will save you water, electricity, and washing powder.  Fill the kettle with only as much water as you need.  Do your weekly shopping in a single trip.  Hang out the washing to dry rather than tumble drying it.
  • 22. Transportation  Carpool - get a lift to school or work with a friend.  Use the bus or a train.  rather than your car.  For short journeys either walk or cycle.  Try to reduce the number of flights you take.  See if your employer will allow you to work from home one day a week.  Next time you replace your car - check out diesel engines. With one of these you can even make your own Biodiesel fuel.  When staying in a hotel - turn the lights and air-conditioning off when you leave your hotel room, and ask for your room towels to be washed every other day, rather than every day.
  • 23. As well as your primary carbon footprint, there is also a secondary footprint that you cause through your buying habits.  Don't buy bottled water if your tap water is safe to drink .  Buy local fruit and vegetables, or even try growing your own.  Buy foods that are in season locally.  Don't buy fresh fruit and vegetables which are out of season, they may have been flown in.  Reduce your consumption of meat.  Try to only buy products made close to home (look out and avoid items that are made in the distant lands).  Buy organic produce .  Don't buy over packaged products.  Recycle as much as possible .  Think carefully about the type of activities you do in your spare time. Do any of these cause an increase in carbon emissions? e.g. Saunas, Health clubs, restaurants and pubs, go-karting etc..
  • 24. Around Your home Reduce heat loss in your home The picture below illustrates some of the main causes of heat loss in a typical house and provides some suggestions on how this can be reduced. Through the roof - install loft insulation Through walls - use cavity wall insulation Through windows - fit double glazing Through gaps around doors - Through the floor - fit fit draft excluders carpet with underlay
  • 25. Reduce energy usage in your home Within your home try to: o Reduce the use of electrical appliances o When replacing appliances, try to buy appliances which use less power and have a good energy rating o Turn things off when not in use o Replace standard light bulbs with their low energy equivalents
  • 26. Recycling Throwing things away is a waste of the energy and the resources taken to make the product. Reducing the number of things that need to be thrown away, reduces the amount of materials which have to be quarried and mined. Reduce, Re-use, Repair and Recycle Reduce  We should all avoid products with excessive packaging  The production of the packaging uses additional energy  The extra volume and weight will have to be transported (by lorries, aircraft, ships etc.)  The packaging will be thrown out and will need to be collected from your home by a large waste disposal truck  Packaging then takes more space at land fill sites
  • 27. Re-use Everyone should try and re-use products for as long as feasibly possible. It is amazing how often people buy certain products and use them only once or twice, even though they can be re-used many times. For instance can you think of some items of clothing you have worn only once?
  • 28. Recycle Recycling uses less energy and produces less pollution than making things from scratch. For example:-  Making Aluminium cans from old ones uses one twelfth of the energy to make them from raw materials.  For glass bottles, 315kg of CO2 is saved per tonne of glass recycled after taking into account the transportation and processing  Making bags from recycled polythene takes one third the Sulphur Dioxide and half the Nitrous Oxide, than making them from scratch.
  • 29. Another form of recycling is composting household and garden waste. Why compost?  it helps fertilize soil, making plants and vegetables grow better  using home made compost will minimise depletion of peat bogs  reduces the number of refuse collections needed  reduces the strain on land fill sites  you may be able to get a reduced price compost bin via the recycle now website What can you compost?  Garden waste (fallen leaves, grass cuttings and prunings)  Kitchen waste (such as raw vegetables, fruit, crushed egg shells, tea leaves and tea bags)  In addition try, shredded paper and cardboard.
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