Global warming

As earth warmed up, this solar energy is radiated by thermal radiation or infrared heat travelling directly out to space, thus cooling the earth.

The concentration of green house gases in the atmosphere were artificially raised by humans since past 250 years.,[object Object]

Since the late 1800’s, the global average temperature has increased about 0.7 to 1.4 degrees.

Global warming would cause much harm, so countries throughout the world drafted an agreement called Kyoto Protocol to help limit it. ,[object Object]

The average surface temperature is 15 degree Celsius.

It is about 33 degree Celsius higher than it would be in the absence of the green house effect. ,[object Object]

GREENHOUSE GASES ,[object Object]

Nitrous oxide (N2O),[object Object]

NITROUS OXIDE It is generated due to burning biomass, agriculture, livestock waste, nitrogen rich fuels. It accounts for 6% of the gases responsible for global warming.

METHANE Methane accounts for 16% of all gases responsible for global warming . It is estimated that nearly 30 to 200 million tones of methane is released every year. The main source of methane is rice field.

Chlorofluorocarbon [CFCS] It accounts for nearly 20% of the gases responsible for global warming. These are non-toxic, nonflammable & highly stable compounds. They are also used as coolants in compressors of air conditioners & refrigerators. They are also use in insulators, fire extinguishers, aerosol etc.

EFFECT OF GLOBAL WARMING On human Society: ,[object Object]

The rainfall have increased by 2 to 3% per decade over tropical regions due to high rate of evaporation.

There is 2% increase in the cloud cover in middle to higher latitude land area during the 20th century.,[object Object]

Soil moisture may decrease, water requirement of the crop will increase & will affect the crop yield.

Due to Green house effect, several plants cripple down their size, fruits & leaves.,[object Object]

On Plants & Animals: ,[object Object]

Slowly disappearing & eventually die if the current trend in global warming countries.

There are rapid rise in global temperature in next 100 years.

The wetland & coral reef may also undergo decline due to climatic changes,[object Object]

In low rainfall there will be waterborne disease.

Heat waves are harmful to health.,[object Object]

Due to increase in the temperature, the water expands & require more space.

Global warming

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Global warming