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CLIMATE CHANGE PPT
Post: #1

CLIMATE CHANGE


Defining Climate Change………

Climate change refers to a change of climate which is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and which is in addition to natural climate variability observed over comparable time periods.
-United Nations Framework Convention on Climate Change
Climate change on the other hand, is a more general term that refers to changes in many climatic factors (such as temperature and precipitation) around the world. These changes are happening at different rates and in different ways.

Why should we care about Climate Change?

The most dramatic change has been in the temperature, that warming by 0.6 °C has already taken place since the 1860s. The last two decades of the 20th century were the warmest in this period.
Over the next hundred years, the earth's surface temperature is projected to increase by 1.4 to 5.8 °C which will be greater than that experienced over the last 10 000 years.
The large quantities of water locked in the polar ice caps and glaciers will be released as a consequence of warming. This, together with an increase in the thermal expansion of the oceans, will make the global mean sea level rise by 9 cm to 88 cm.

Impacts of Climate Change in INDIAN context

Because of 2.5 to 5°C rise in mean surface temperature, northern India will be warmer
20% rise in Unpredicted rainfall
All states have increased rainfall except Punjab, Rajasthan, Tamil Nadu, where it has decrease
Increase in Drought and flood intensity
Frequent tropical cyclones in Bay of Bengal will increase particularly in the post-monsoon period and flooding will increase in low-lying coastal areas. The recent IPCC report has projected a global mean sea level rise of 0.59 m by the end of the 21st century.

Transportation Choices—Honolulu, HI

The expansion of Honolulu’s Bus Rapid Transit (BRT) program has led to steady growth in passengers choosing the bus for their commute. Monthly ridership has increased from about 100,000 riders in 1999 to more than 630,000 in 2005. Assuming that half of BRT ridership represents a shift from trips made in passenger vehicles to trips taken on BRT, this equals an annual carbon dioxide reduction of approximately 7,000 tons.


Attached File(s)
.pptx  CLIMATE CHANGE.pptx (Size: 1.87 MB / Downloads: 29)
 

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