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MADECLEAR Sea Level.Pptx POLAR EXPLORER As a polar explorer you and your team will be collec@ng evidence of changes occurring throughout the world that might connect our polar regions to changing sea level. Record your evidence, then work with your EXPLORING SEA team to analyze the data and develop a hypothesis to convince your i LEVEL RISE colleagues to ‘FOCUS ON THE POLES’ when studying the Earth System! Developed by: Margie Turrin, [email protected] Note: Pages with this mark have data to record on your worksheet. What makes sea level change? Is Greenland’s Ice Sheets Changing Now? Is Antarc@ca’s Ice Sheets Changing Now? How Fast Can Sea Level Change? How Much Ice Is There At the Poles? Is There A Cri@cal Tipping Point? What Can I Do? EXPLORING SEA LEVEL RISE PART 1 What makes sea level WHAT CAUSES GLOBAL SEA LEVEL TO CHANGE? change? Is Greenland’s Ice Sheets Changing Now? Is Antarc@ca’s Ice Sheets Changing Now? How Fast Can Sea Level Change? How Much Ice Is There At the Poles? Is There A Cri@cal Tipping Point? What Can I Do? EXPLORING SEA LEVEL RISE HOW MUCH HAS THE OCEAN SURFACE WARMED? What makes Oceans are sea level Warming: change? Expanding & melng ice Is Greenland’s SEA SURFACE TEMPERATURE CHANGE Ice Sheets Atmosphere Changing is warming: Now? Mel>ng polar Ice Is Antarc@ca’s Ice Sheets Warm Water Changing Expands in Now? the ocean How Fast Can Sea Level Mel>ng polar Change? Ice from How Much Ice warm ocean Is There At and air is the Poles? adding to the cooling warming Is There A ocean Cri@cal Does Mel>ng hp://www.ospo.noaa.gov/Products/ocean/sst/anomaly/index.html Tipping Point? Sea Ice What Can I Contribute to ‘Science Fact’: A warming ocean expands Do? Sea Level? EXPLORING SEA in size causing sea level to rise, and LEVEL RISE begins to melt glacial ice. SEA SURFACE TEMPERATURE CHANGE What makes Oceans are sea level Warming: change? Expanding & melng ice Is Greenland’s Ice Sheets Atmosphere Changing is warming: Now? Mel>ng polar Is Antarc@ca’s Ice Ice Sheets Warm Water Changing Expands in Now? the ocean How Fast Can Sea Level Change? Mel>ng polar Ice from How Much Ice warm ocean Is There At and air is the Poles? adding to the Is There A ocean Cri@cal hp://www.epa.gov/climatechange/science/indicators/oceans/sea-surface-temp.html Tipping Point? Does Mel>ng Sea Ice What Can I Contribute to RECORD: HOW MUCH HAS THE SURFACE OF Do? Sea Level? THE OCEAN WARMED FROM 1880-2011? EXPLORING SEA LEVEL RISE Note: ‘Anomaly’ is oZen the way scien@sts measure change. It measures differences compared to the average for a period of @me. HOW MUCH HAS THE ATMOSPHERE WARMED? What makes Oceans are sea level Warming: change? Expanding & Mel>ng ice Is Greenland’s Atmosphere Ice Sheets is warming: Changing Now? Mel>ng polar Ice Is Antarc@ca’s Ice Sheets ATMOSPHERIC TEMPERATURE CHANGE Warm Water Changing Expands in Now? the ocean How Fast Can Sea Level Mel>ng polar Change? Ice from How Much Ice warm ocean Is There At and air is the Poles? adding to the cooling warming Is There A ocean Cri@cal Does Mel>ng Tipping Point? Sea Ice hp://earthobservatory.nasa.gov/Features/WorldOfChange/decadaltemp.php What Can I Contribute to Do? Sea Level? EXPLORING SEA ‘Science Fact’: A warming atmosphere LEVEL RISE warms the global oceans and begins to melt glacial ice. RECORD: HOW MUCH HAS EARTH’S ATMOSPHERE What makes Oceans are WARMED FROM 1901-2011? sea level Warming: change? Expanding & Mel>ng ice Is Greenland’s Ice Sheets Atmosphere Changing is warming: Now? Mel>ng polar Ice Is Antarc@ca’s Ice Sheets Warm Water Changing Expands in Now? the ocean How Fast Can Sea Level Mel>ng polar Change? Ice from How Much Ice warm ocean Is There At and air is the Poles? adding to the Is There A ocean Cri@cal Does Mel>ng hp://www.epa.gov/climatechange/science/indicators/weather-climate/temperature.html Tipping Point? Sea Ice What Can I Contribute to Do? Sea Level? Note: Earth’s surface data from land-based weather EXPLORING SEA staons and sea surface temperature LEVEL RISE measurements. Lower troposphere measurement (atmosphere layer closest to the Earth) by satellite. THERMAL EXPANSION OF THE OCEAN FROM What makes Oceans are WARMING WATER sea level Warming: change? Expanding & Mel>ng ice Is Greenland’s Ice Sheets Atmosphere is warming: Changing Now? Mel>ng polar Ice Is Antarc@ca’s Ice Sheets Warm Water THERMAL EXPANSION OF OCEAN WATER Changing Expands in Now? the ocean How Fast Can Sea Level Mel>ng polar Change? 1993 - 2003 Ice from How Much Ice warm ocean Like a hot air balloon water expands as it warms. This is called ‘thermal Is There At and air is expansion’. Above black is land, colors are ocean water expansion from the Poles? adding to the warming from 1993 to 2003. Temperature varies throughout the ocean Is There A ocean causing the differences in the expansion. Cri@cal Does Mel>ng hp://www.cmar.csiro.au/sealevel/sl_drives_longer.html Tipping Point? Sea Ice What Can I Contribute to HOW MUCH HAS THE OCEAN EXPANDED FROM WARMING? Do? Sea Level? ‘Science Fact’: Water EXPANDS as it warms EXPLORING SEA LEVEL RISE and shrinks as it cools. A warming ocean expands in size causing sea level to rise. What makes Oceans are Ocean heat content (0-700m of depth) sea level Warming: change? Expanding & Mel>ng ice Is Greenland’s Ice Sheets Atmosphere Changing is warming: Now? Mel>ng polar Ice Is Antarc@ca’s Ice Sheets Warm Water Changing Expands in Now? the ocean How Fast Can Sea Level Mel>ng polar Change? hp://www.cmar.csiro.au/sealevel/sl_drives_longer.html Ice from How Much Ice warm ocean Is There At and air is the Poles? RECORD: HOW MUCH HAS THE OCEAN WARMED & adding to the ocean EXPANDED 1960-2007? Is There A Cri@cal Does Mel>ng Tipping Point? Sea Ice What Can I Contribute to *Heat in Joules. In water 4.184 Joules = 1 calorie. Do? Sea Level? 1 calorie is the heat needed to raise 1 gram of water 1°C. EXPLORING SEA LEVEL RISE What makes Oceans are sea level Warming: Ocean Expansion (0-700m of depth) change? Expanding & Mel>ng ice Is Greenland’s Ice Sheets Atmosphere Changing is warming: Now? Mel>ng polar Ice Is Antarc@ca’s Ice Sheets Warm Water Changing Expands in Now? the ocean How Fast Can Sea Level Mel>ng polar Change? hp://www.cmar.csiro.au/sealevel/sl_drives_longer.html Ice from How Much Ice warm ocean Is There At and air is RECORD: HOW MUCH HAS THE OCEAN WARMED & the Poles? adding to the EXPANDED 1960-2007? Is There A ocean Cri@cal Does Mel>ng Tipping Point? Sea Ice What Can I Contribute to *Thermosteric is change in sea surface height from Sea Level? expansion/contrac@on from temperature change Do? EXPLORING SEA LEVEL RISE What makes Oceans are sea level Warming: change? Expanding & Mel>ng ice Is Greenland’s Ice Sheets Atmosphere Changing is warming: Now? Mel>ng polar Ice Is Antarc@ca’s MELTWATER CONTRIBUTION TO SEA LEVEL Ice Sheets Warm Water Changing Expands in Now? the ocean How Fast Can Sea Level Mel>ng polar Change? Ice from How Much Ice warm ocean Is There At and air is the Poles? adding to the Is There A ocean Glaciers and Ice cap meltwater contribu@on areas, from Jacob et al Nature paper, 2012 Cri@cal Does Mel>ng Tipping Point? Sea Ice HOW MUCH MORE WATER IS IN THE OCEAN FROM What Can I Contribute to MELTING POLAR GLACIERS? Do? Sea Level? EXPLORING SEA ‘Science Fact’: Mel@ng ice from the LEVEL RISE Earth’s glaciers adds to the oceans causing sea level to rise. YEARLY POLAR MELTWATER CONTRIBUTIONS TO SEA LEVEL What makes Oceans are sea level Warming: change? Expanding & Mel>ng ice Is Greenland’s Ice Sheets Atmosphere Changing is warming: Now? Mel>ng polar Ice Is Antarc@ca’s Ice Sheets Warm Water Changing Expands in Now? the ocean Cumula>ve SLR (mm) How Fast Can Sea Level Mel>ng polar Change? Ice from How Much Ice warm ocean Is There At and air is the Poles? adding to the ocean 1989-2009 Is There A Cri@cal Sea level rise contribu@ons from the Ice Sheets. Does Mel>ng Tipping Point? Antarc@ca (AIS-blue). Greenland (GrIS-green). Sea Ice Contribute to Red is the sum. Dashed lines outline uncertainty. What Can I Do? Sea Level? hp://link.springer.com/content/pdf/10.1007%2Fs10712-011-9137-z.pdf EXPLORING SEA RECORD: HOW MUCH WATER IS BEING ADDED LEVEL RISE TO THE OCEANS FROM POLAR GLACIERS? DOES MELTING SEA ICE CAUSE SEA LEVEL TO CHANGE? What makes Oceans are sea level Warming: change? Expanding & Mel>ng ice Is Greenland’s Ice Sheets Atmosphere Changing is warming: Now? Mel>ng polar Ice Is Antarc@ca’s Ice Sheets Warm Water Changing Expands in Now? the ocean How Fast Can Sea Level Mel>ng polar Change? Ice from How Much Ice warm ocean Is There At and air is the Poles? adding to the Is There A ocean Cri@cal Does Mel>ng Tipping Point? Sea Ice Contribute to Image from NSIDC ‘SCIENCE FACT’: Not Directly. In the image What Can I Do? Sea Level? above sea ice is white and land is grey.
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