Transcript presentation on climate change

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
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.
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.
Key Research Findings
• The city’s 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.
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.
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.
•
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.
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 rainfed 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.
Strategies to combat Climate Change
• Walk or bike instead of driving a car
• Use compact fluorescent light bulbs as these energyefficient
• 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
YOU HAVE A CHOICE
You can choose to
SAVE THE EARTH
Take a pledge today to adopt the
strategies to reduce climate change
and let’s all join in the effort to
make the
earth smile again