Global Warming

                                                     

 

                                                                                 

Code : PEL 113

C.A-4

Presented By                                                                          Presented To

Tirtho Tanzeer Rubayat                                                                         Dr. Sandeep Kumar Sharma     

Reg: 12300275                                                                                         Assistant Professor                                                                                                   

BAJMC: 1^st Year                                                                                  Lovely Professional University 

Lovely Professional University                                                               

                                                                             Global warming and India

Global warming is a phenomenon where the earth’s average temperature rises due to increased amounts of greenhouse gases. Greenhouse gases such as carbon dioxide, methane and ozone trap the incoming radiation from the sun. This effect creates a natural blanket, which prevents the heat from escaping back into the atmosphere. This effect is called the greenhouse effect.

 

If this occurs on the earth, the runaway greenhouse effect will lead to many unpleasant scenarios – temperatures will rise hot enough for oceans to evaporate. Once the oceans evaporate, the rocks will start to sublimate under heat. In order to prevent such a scenario, proper measures have to be taken to stop climate change.

 

Since the industrial and scientific revolutions, Earth’s resources have been gradually depleted. Furthermore, the start of the world’s population’s exponential expansion is particularly hard on the environment. Simply put, as the population’s need for consumption grows, so does the use of natural resources, as well as the waste generated by that consumption.

 

Climate change has been one of the most significant long-term consequences of this. Climate change is more than just the rise or fall of global temperatures; it also affects rain cycles, wind patterns, cyclone frequencies, sea levels, and other factors. It has an impact on all major life groupings on the planet.

 

India has been facing dangerous and worst consequences from global warming. Scientist researches reveald that:

 

Extreme Heat

What we know: India is already experiencing a warming climate.

What could happen:

Unusual and unprecedented spells of hot weather are expected to occur far more frequently and cover much larger areas.

Under 4°C warming, the west coast and southern India are projected to shift to new, high-temperature climatic regimes with significant impacts on agriculture.

What can be done:        

With built-up urban areas rapidly becoming “heat-islands”, urban planners will need to adopt measures toper  counteract this effect.

 

Changing Rainfall Patterns

What we know: A decline in monsoon rainfall since the 1950s has already been observed. The frequency of heavy rainfall events has also increased.

What could happen:

A 2°C rise in the world’s average temperatures will make India’s summer monsoon highly unpredictable.

At 4°C warming, an extremely wet monsoon that currently has a chance of occurring only once in 100 years is projected to occur every 10 years by the end of the century.

An abrupt change in the monsoon could precipitate a major crisis, triggering more frequent droughts as well as greater flooding in large parts of India.

India’s northwest coast to the south eastern coastal region could see higher than average rainfall.

Dry years are expected to be drier and wet years wetter. 

What can be done:

Improvements in hydro-meteorological systems for weather forecasting and the installation of flood warning systems can help people move out of harm’s way before a weather-related disaster strikes.

Building codes will need to be enforced to ensure that homes and infrastructure are not at risk.