DAILY REVIEW #9 29. What happens in the Arctic Ocean that drives the thermohaline circulation? 30. Why is the thermohaline circulation important to climate?

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Daily Review #9 What happens in the Arctic Ocean that drives the thermohaline circulation? Why is the thermohaline circulation important to climate? Describe what changes during an El Nino cycle. What are the 3 main greenhouse gases? Describe one way that each of the greenhouse gases changes naturally.

EndCo2 changesVaries throughout the yearNatural causesHuman causesVaries over timeHighest level in 800,000 yrs.40% increase since Industrial Age

http://www.smithsonianmag.com/smart-news/keeling-curve-gets-much-needed-boost-googles-schmidt-180952634/?no-ist

http://earthguide.ucsd.edu/eoc/special_topics/teach/sp_climate_change/p_keeling_curve

http://www.livescience.com/29271-what-is-the-keeling-curve-carbon-dioxide.html

2Methane changesVariesNatural causesHuman causesHighest level in 650,000 years148% increase since Industrial Age

http://www.giss.nasa.gov/research/features/200409_methane/http://www.windows2universe.org/earth/climate/greenhouse_effect_gases.html3Effects of climate change todayIPCC conclusionsLast 100 yearsCurrent change is not normalHuman emissions likely dominant cause of change1.1oF global average increaseContinued emission rate of GHG will cause:Further warmingLong-lasting changes to all parts of the climateSevere effects globally

http://www.epa.gov/climatechange/images/science/ScenarioTempGraph-large.jpg

http://www.epa.gov/climatechange/science/future.html4Daily review #10 What has happened to carbon dioxide and methane levels in the atmosphere since the Industrial Age? List at least 5 things humans do that change climate. What effect has already been seen on the climate? Brainstorm at least 5 different things that can happen because of what you described in #36.

EndClimate change EffectsTemperatureAlready documented increaseProjection2-11oF in next 100How can we change that?

WeatherMore variable weatherDue to:Higher temp.More fuel for weatherEffects and their effectsAgricultureWildfiresExtreme rain/snowDust storms

Sea LevelHistoricallyCurrently4-8 in. last 100 yrs.Double the rate in last 20 yrs.CausesMelting glaciers and ice capsThermal expansionEffectsPredictions (by 2100)2.5-6.5 ft. Extreme = 23ft.

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http://en.wikipedia.org/wiki/Current_sea_level_rise9

MeltingWhat has happened?Land vs. sea iceExamplesEffect on sea levelsPredictionsEffectsSea levelsAlbedo decreaseDecreased salinityChange thermohaline circulation

Effects of Climate changeResearch and choose 1 effect climate change has on our world. Get your choice checked off by me (1st come first served!) Research furtherHow does climate change impact this area?How will human society be changed due to this impact?What (if anything) can we do now so that this impact is less dramatic? Post your findings on Padlet