Climate Change : Climate Change Are we to blame? Slide 2: Pederson Glacier (Alaska) Glaciers are retreating Larsen B ice shelf, Antarctica, 3250 km2 of ice, 220 m thick collapsed in 2002 : Larsen B ice shelf, Antarctica, 3250 km2 of ice, 220 m thick collapsed in 2002 Source: NASA Parts of some Antarctic ice shelves are collapsing Sea levels are rising : Sea levels are rising Source: http://www.flickr.com/photos/go_greener_oz/3047060508/ Slide 5: All is not well All is not well Slide 6: Source: Vital Climate Graphics, Grid Arendal / UNEP Gases like carbon dioxide are essential for life on Earth. Slide 7: They trap some of the heat leaving the Earth. Without them, Earth’s average temperature would be -200 C Slide 8: They are called
Green House Gases
(GHGs) Slide 9: Some are natural
some man-made Slide 10: Not only are we creating new greenhouse gases, we are adding to natural ones as well Slide 11: Atmospheric CO2 has increased from a pre-industrial concentration of about 280 ppmv to about 367 ppmv at present Slide 12: Methane and nitrous oxide fare no better Slide 13: To learn more about the concentration of GHGs in the atmosphere before the era of instruments and measurements, scientists are analyzing gases trapped in ice And we find that……. Slide 14: The concentrations of greenhouse gases that we are seeing now, has not been witnessed in the past
600000 years Source: IPCC (2007) Slide 15: We’re blanketing the Earth with more and more of these gases and the ‘ball is going warm’ Source: http://www.flickr.com/photos/perryham/3577638548/ Slide 16: Eleven of the last twelve years were the warmest since thermometer records began in 1850 Slide 17: A hot future awaits us Global mean surface temperature could rise between 1-4.5 0C by 2100 Slide 18: Will it affect us? Slide 19: Net cereal production in South Asian countries is projected to decline at least between 4 to 10% by the end of this century Slide 20: The risk of hunger is likely to remain very high in India Slide 21: Melting of glaciers could seriously affect 500,000,000 people served by the Himalaya-Hindu-Kush region Source: http://www.flickr.com/photos/ilker/2493908853/ Precipitation patterns will change : Precipitation patterns will change There may be more intense rainfall on rainy days, resulting in floods and more dry days in a year, causing drought Slide 23: Damages due to floods has cost India over Rs 800 crore every year Slide 24: 350 million Indians have been affected badly due to drought in past ten years Slide 25: Groundwater – it’s finite! 78% of assessed groundwater units in Delhi are over-exploited (extraction > recharge) Slide 26: India will reach a state of water stress before 2025 Slide 27: water conflicts This will impact food security, human health and economic activity Slide 28: Sea level will be a minimum of 40 cm higher than today by the end of 21st century Source: TERI 1996 11 % of Bangladesh's coastal land is likely go underwater, creating 7 to 10 million climate refugees Slide 29: Deaths due to heat waves, water borne diseases and vector borne diseases like dengue are expected to increase Slide 30: Food Water
Each one of us will be affected Slide 31: But, are we to blame?
Aren’t the culprits industry and the government? Slide 32: 1940 – 2.3 billion 2050 – 9.2 billion Slide 33: Population is increasing but natural resources are NOT!! Slide 34: Forests are becoming croplands to feed our growing millions.
Fewer trees, more carbon dioxide in the atmosphere Intensification of agriculture to feed the growing millions : Intensification of agriculture to feed the growing millions Source: IGBP Global fertilizer consumption More nitrous oxide released Changing lifestyles : Source: http://maps.grida.no/go/graphic/the-richer-we-get-the-more-we-discard-human-consumption-waste-and-living-standards Philippe Rekacewicz, UNEP/GRID-Arendal Changing lifestyles More methane generated by anaerobic decomposition of wastes in landfills Changing lifestyles : Changing lifestyles http://www.flickr.com/photos/lingaraj/2415084235/ Increasing industrialization to meet our growing demands : Increasing industrialization to meet our growing demands Increased demand for electricity : Increased demand for electricity From domestic consumersFrom industriesFrom the agriculture sector Electricity generation : Electricity generation Source: International Energy Agency 0.82 kg of CO2 produced for every unit of electricity generated from coal.
That’s approx. 1 kg of CO2 produced for every unit of electricity we use. Energy use : Energy use Source: CDIAC Slide 42: It’s time to adopt a low carbon lifestyle…. Will it help? : The worst can still be avoided if we immediately and aggressively work towards being part of the solution Will it help? But can I make a difference? I am just one person. : But can I make a difference? I am just one person. The impact of millions of people who choose to make changes in personal lifestyles cannot be undermined “Whatever you may do may seem insignificant to you, but it’s most important that you do it”. - Mahatma Gandhi : “Whatever you may do may seem insignificant to you, but it’s most important that you do it”. - Mahatma Gandhi Prepared by: Ms Rashmi GopalAssistance: Ms Pallavi HittanagiSources:The Schools Water Portal - http://schools.indiawaterportal.org/Ms Ulka Kelkar : Prepared by: Ms Rashmi GopalAssistance: Ms Pallavi HittanagiSources:The Schools Water Portal - http://schools.indiawaterportal.org/Ms Ulka Kelkar