Permafrost sending climate alert
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Permafrost is thawing due to rising Arctic temperatures, releasing greenhouse gases like nitrous oxide. This threatens infrastructure like the Tibetan railway and is exacerbating climate change through a feedback loop. As permafrost thaws, it releases more gases that cause more warming and thawing. While the situation presents challenges, it is not too late to take action through initiatives like more efficient energy use and further research.
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Permafrost sending climate alert
- 1. Thawing Permafrost Sending Climate Alert Name Lu Xueke Class 08215102
- 2. CLIMATE ALERT Permafrost is thawing Arctic is degrading N2O is slowly releasing Natural calamity Rebuild the Tibetan Plateau railway? Boomed bettles destroyed the forest in Alaska EMBRACE CHALLENGES It is never too late to take action Recommendations
- 3. What is permafrost? soil at or below the freezing point of water for 2 or more years located in high latitudes accounts for 0.022% of total water exists in 24% of exposed land in the Northern Hemisphere Time taken for permafrost to reach depth
- 4. time taken for permafrost to reach depth Time (yr) Depth (m) 1 4.44 350 79.9 3500 219.3 35,000 461.4 100,000 567.8
- 5. melting arctic •Temperature have risen by up to 3°C in the past 50 years. •Temperature will rise by a further 2 - 9°C this century. •Animals are in danger.
- 6. Penguins lose habitat. Polar bears kill each other Sea lion is dying under the sun.
- 7. A new greenhouse gAses (n2o) released by thawing permafrost in Greenland 298-times more powerful than CO2 rate of nitrous oxide is low CO2 CH4 N2O
- 8. Arctic is in A Vicious cycle Glacier Collapse Temperature rising Permafrost Thawing Greenhouse Gases , Microorganisms releasing
- 9. emission of greenhouse gAses In a pothole, buried air and gas from bacteria and algae bubbled to the surface, where a midnight freeze trapped them. Emission of CH4 from the ice in North Canada.
- 10. nAturAl cAlAmity Tibetan Plateau railway Foundation deformation Will cost another 4,000,000,000 dollars? Trains will aggravate the thawing Dead spruce---victim of tiny beetles 1 million acres have succumbed to the spruce bark beetle dead trees release greenhouse gases
- 11. EmbracE challEngEs 【 Astonishing Data 】 Green house gases covered an area of nearly 800,000 square miles of Actic In 2009 summer season, only 10% of Arctic sea ice was more than 2 years old Arctic Ocean will become sea-ice free in 20 to 40 years. About 1,000,000,000 tons of green house gases will emit.
- 12. EmbracE challEngEs 【 Astonishing Data (cont.) 】 The methane density nowadays is the highest ever since the 400,000 years The ice ratio of the permafrost is decreasing year to year. But it is never too late to take action.
- 13. Comparison of sea ice age at the end of winter in February 2009 (right) with the 1981-2000 average (left). back
- 14. (a)Year-to-year changes of permafrost’s Ice ratio. (b) soil temperature, in Layer10 for six analysis regions.
- 15. It Is nEvEr too latE to takE actIonChina 1. lowering the relative use of energy by 14.4% 2. cut energy intensity 20% by the end of 2010
- 16. It Is never too late to take actIon America 1. Stream water study detects thawing permafrost 2. a new IBM supercomputer installed by NCAR for Improved Climate and Weather Research
- 18. Do you want our Arctic Ocean to be like this? If No… Recommendation 1. Use less water 2. Walk more, drive less 3. Energy-efficient light bulbs 4. Eat less meat 5. Use recycle bags …………….