Global Warming

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Global Warming

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GLOBAL WARMING

Greenhouse Effect:

Greenhouse Effect 240 Watt per m 3 343 Watt per m 3 103 Watt per m 3

Impacts on Climate Change:

Impacts on Climate Change Forests Biodiversity Agriculture Coastlines Impact of rise in temperature of 1.8 o C to 4 o C

Greenhouse gases :

Greenhouse gases Carbon dioxide (CO 2 ) Methane (CH 4 ) Nitrous oxide (N 2 O) Hydrofluorocarbons (HFCs) Perfluorocarbons (PFCs) Sulphur hexafluoride (SF6) Natural Manma - de

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Explanation of the causes of G lobal W arming

Mt. Kilimanjaro’ Glaciers are Melting Because of Global Warming:

Mt. Kilimanjaro’ Glaciers are Melting Because of Global Warming

Climate Change Impact in India:

Climate Change Impact in India Rajasthan- Drought Rann of Kutch – sea level rise Mumbai-Salt water increase Kerala –Productivity of Forest Tamil Nadu-Coral bleaching Ganges – Sedimentation problem Sunderbans -Sea level raise Northwest India-reduction In rice yield

Effect on apple cultivation:

Effect on apple cultivation Kullu Valley, Himachal Pradesh Experienced a number of crop failures in the last 15 years Apple belt has moved 30 kilometers [northwards] over the last 50 years Apple growers, says attributed poor production to reduced snowfall and its changed timing. Impact on Agriculture

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The Common Murre has advanced breeding by 24 days per decade over the past 50 years in response to higher temperatures.

Effect on Humans:

Effect on Humans Fewer deaths from cold, more from heat Decreased thermohaline circulation Cooler temperatures in North Atlantic CO 2 fertilization effect Precipitation changes Droughts and famine (some areas) Expanded arable land in Canada, Soviet Union

Future Carbon Dioxide Levels:

Future Carbon Dioxide Levels Increasing CO 2 emissions, especially in China and developing countries Likely to double within 150 years: Increased coal usage Increased natural gas usage Decreased petroleum usage (increased cost and decreasing supply)

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The Baltimore oriole is shifting northward and may soon disappear entirely from the Baltimore area.

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Polar bear populations are coming under threat as food becomes harder to hunt.

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Signed UNFCC on 10 th June 1992 India ratified the Kyoto protocol India has a National Action Plan on Climate Change National Solar Mission National Mission for Enhanced Energy Efficiency National Mission on Sustainable Habitat National Water Mission National Mission for Sustaining the Himalayan Ecosystem National Mission for a “ Green India” National Mission for Sustainable Agriculture India’s Initiatives

India’s Initiatives:

India’s Initiatives India has a well developed policy, legislative regulatory & programmatic regime For promotion of Energy efficiency, renewable energy, nuclear power, fuel switching, energy pricing reform addressing GHG emission National Mission on Strategic Mission on Climate Change

Temperature History of the Earth:

Temperature History of the Earth Little ice age (1400-1840) – 1°C cooler Medieval warm period (800-1300) – 1°C warmer than today Cool/warm cycles occur ~1,500 years

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Affecting mostly Northeastern U.S. and North Atlantic Mostly due to changes in thermohaline circulation  Dramatic shutdown of thermohaline circulation occurred 8,200 years ago as a large lake in Canada flooded the North Atlantic For the past 3 million years, the earth has been experiencing ~100,000 year long cycles of glaciation followed by ~10,000 year long interglacial periods These climate periods are largely the result of cycles in the earth’s orbit – precession, obliquity, and eccentricity

Per-capita Carbon –dioxide emission (Metric Tons) :

Per-capita Carbon –dioxide emission (Metric Tons) Country In Metric Tons USA 20.01 Europe 9.40 Japan 9.87 China 3.60 Russia 11.71 India 1.02 World average 4.25

Conclusions:

Conclusions Global warming is happening all around the world. Global warming is probably the result of human activities There will be positive and negative (mostly) effects from global warming The costs to mitigate global warming will be high.!!

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The impacts of climate change are not evenly distributed – the poorest countries and people will suffer earliest and most. And if and when the damages appear it will be too late to reverse the process. Thus we are forced to look a long way ahead.

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THANK YOU

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