OUR CHANGING CLIMATE

1
OUR CHANGING CLIMATE

• Presented by
• the students of Class VII B
• Aparna S, Aarti Rao, Megha Maini, Richa Sharma, S
  Rohan, Sajan B, Amita S, Wajid S, V.Bernard,
  Jeevanth K

2
What is Climate Change?

• Climate change is the change in our weather
  patterns that are occurring because of an
  increase in the earth's average temperature.
• It is also known as global warming.
• Climate change may result from both natural
  and human causes though the human causes appear
  to be increasingly responsible for climate change
  over the past few decades.

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Research Project on Climate Change undertaken by
students of VII B

• Students of Class VIIB undertook a research
  project to study the climate change in Bangalore,
  the specific areas of change, the reasons for
  this change, its implications as well as
  strategies to deal with Climate change.
• Data was gathered via interviews with senior
  citizens arranged by the local residents
  association as well as with officials from the
  Meteorological Department.

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Key Research Findings

• The citys monthly mean maximum temperature has
  been steadily on the rise. It has increased by
  two to three degree Celsius since 1960. The
  highest maximum temperature in any given month
  has similarly risen by 1 to 2 degrees Celsius
  over the few decades.
• March and April, Bangalore's hottest months, are
  only getting hotter.

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Key Research Findings

• Over the last 20 years, the temperatures went
  beyond 36.5 degrees Celsius on over nine
  occasions, as opposed to only four such years in
  the two preceding decades starting 1967.
• Rains in Bangalore have also turned
  unpredictable. The months of September October
  are when the city receives the highest rainfall
  in the year, about 195 mm and 180 mm respectively
  on an average. However in recent years Bangalore
  received only approximately 45.3 mm rain in
  September.

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Key Research Findings

• Bangalore-The Urban Heat Island
• The Centre's recording stations are placed
  in two different locations in the city, one in
  the centre and the other near the airport. The
  readings of these two thermometers are always 1
  or 2 degrees different, with the one in the city
  centre recording higher temperatures
  consistently.
• This is a classic example of the "urban heat
  island" effect, caused because Bangalore's green
  cover is being replaced by concrete structures
  that absorb solar radiation very rapidly.
• Vehicular pollution, with carbon dioxide and
  other green house gases that it generates, also
  has a big role to play. Approximately 1.5 lakh to
  two lakh vehicles are added to the city roads
  every year. Carbon dioxide emissions trap heat,
  and this impacts climate.
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•  

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Global Facts on Climate Change

• 1990s was the warmest decade in the last
  millennium.
• 1998 was the warmest year.
• Snow cover is down 10 in the last 40 years.
• Arctic summer sea ice is likely to disappear in
  second half of century.
• Carbon Dioxide levels in the Earth's atmosphere
  have increased by 30 in the last 200 years
  alone.
• Global temperature changes by the end of the
  century could be as high as 6.4C.
• Sea levels around the world are likely to rise by
  28-43cm by the end of the century.

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Some negative effects of Climate Change

• In Asia alone more than a billion people will be
  affected by water shortage by 2050.
• Changes to India's annual monsoon are expected to
  result in severe droughts and intense flooding in
  parts of India.
• With more than 60 of agriculture dependent on
  rain-fed crops, even modest alteration in the
  intensity, frequency and timing of rainfall
  should cause a large negative impact on food
  production.
• Increase in water borne diseases such as cholera
  and hepatitis, as well as diseases carried by
  insects such as malaria.
• Climate change is expected to contribute to air
  quality problems and respiratory disorders will
  increase due to warming-induced increases in the
  frequency of smog.

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Strategies to combat Climate Change

• Walk or bike instead of driving a car
• Use compact fluorescent light bulbs as these
  energy-efficient
• Reduce heating and air-conditioning in your homes
• Use car pools whenever possible
• Buy local and seasonal produce
• Put a lid on vessels when cooking
• Turn off all electrical appliances instead of
  putting them on standby when not in use
• Unplug electrical appliances when fully charged
• Keep the opening of fridge and freezer doors to
  the minimum
• Use pressure cooker s as much as possible
• RENEW, RECYCLE, REUSE
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• YOU HAVE A CHOICE
• You can choose to
• SAVE THE EARTH
• Take a pledge today to adopt the
• strategies to reduce climate change
• and lets all join in the effort to
• make the
• earth smile again