ECOL 1000 1nd Edition Lecture 36Outline of Last Lecture I. Tundra meltingII. EmellianaIII. Carbon DioxideOutline of Current Lecture II. Types of water scarcitiesIII. Ocean surface temp and storm intensity relationshipIV. Mitigating climate changeCurrent Lecture- Physical water scarcity: use of water is approaching or exceeding sustainable limits- Economic water scarcity: access to water is limited by the ability to pay for it, not by its physical scarcity- Approaching physical water scarcity: with more than 60% of river flow withdrawn, these areas will face water shortage in the near future- Little or no water scarcity: water supplies are abundant and there are no economic constraints toaccess it- Ocean surface temperature and storm intensityo As surface temperature increases, storm intensities increaseo as surface temperatures increase, ice meltso as ice melts, sea level rise- Where is all this extra carbon dioxide going?- Sea level almost certain to rise 3-6 feet in less than 100 yearso It could rise more if the current rate of Greenland and Antarctic keep meltingo On coastal Ga, water moves inland 1000’ with every 1 ft sea level rise- Increases in air and water temperatures heat-related stresses for people, plants, and animals- Decreased water availability affects region’s economy These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Option for mitigating climate changeo Energy supply- switching from coal to gas to renewable powero Transport- more fuel efficient vehicles, more public transport systemso Buildngs- more efficient lighting and daylightingo Industry- more efficient equipmento Agriculture- improved crop and grazing land management to increase soil carbon storageo Forestry/forests- reforestationo Waste- landfill methane recoveryo Stabilization wedges To stabilize emissions in the next 50 years, the world must reduce emissions by about 7 gigatons of carbon compared to normal
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