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 & mel ng 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 h p://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 & mel ng 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 h p://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 o en 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 h p://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 h p://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 sta ons 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 h p://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? h p://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? h p://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? h p://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. Sea EXPLORING SEA ice already floats directly in the ocean so as LEVEL RISE it melts it does not add new volume to the ocean. SO WHAT MAKES GLOBAL SEA What makes LEVEL CHANGE? 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 TIME TO EXAMINE YOUR EVIDENCE AND FINISH THIS SECTION OF Cri cal YOUR WORKSHEET TO FIND OUT WHAT MAKES SEA LEVEL CHANGE & Tipping Point? IF YOU FOUND A POLAR CONNECTION! What Can I Do? EXPLORING SEA LEVEL RISE PART 2 HOW FAST CAN SEA LEVEL CHANGE? What makes WORK BACK THROUGH TIME TO FIND OUT! sea level change? SEA LEVEL DATA CALCULATED FROM THE LAKE Is Greenland’s VOSTOK, ANTARCTIC ICE CORE Ice Sheets Changing Now? Is Antarc ca’s Ice Sheets Changing Now? How Fast Can Sea Level Change?
Edited chart from NASA scien st Dr. James Hansen. How Much Ice h p://www.johnenglander.net/t-co2-sl-420kyr-chart Is There At the Poles? The Earth’s Climate has changed throughout its history. We know this Is There A from ice cores taken from Antarc ca and Greenland. Data from the Cri cal Vostok core shows the ~100,000 year fluctua on between glacial and Tipping Point? interglacial periods with water moving between the oceans and glacial What Can I ice changing sea level as it moved. Do?
How Fast Can Sea Level Change? Sea Level Trend Map 1993 - 2012 period
h p://sealevel.colorado.edu/content/map-sea-level-trends - (Colorado Univ) 2013_rel3: Global Mean Sea Level Time Series (seasonal signals removed) - 3.2 ± 0.4 mm/yr
h p://sealevel.colorado.edu/content/global-mean-sea-level- me-series-seasonal-signals-removed - can get ascii file CURRENT SEA LEVEL WITH TRENDS What makes Current Sea sea level Level change? Is Greenland’s Sea Level in Ice Sheets Human Changing History Now? Is Antarc ca’s Last Ice Age Ice Sheets 95,000 to Changing 20,000 yrs. Now? ago How Fast Can Sea Level Last Warm Change? Period How Much Ice ~125,000 yrs. Is There At ago the Poles? Future Sea Is There A Level Cri cal Tipping Point? 50/100/1000 What Can I Use NOAA’s Sea Level Online to see trends for a loca on close to you: Do? h p:// desandcurrents.noaa.gov/sltrends/index.shtml
How Fast Can Sea LOCATE: WHAT IS HAPPENING ON THE Level Change? COASTAL AREA CLOSE TO YOU ? What makes Current Sea RECORD: CURRENT SEA LEVEL WITH TRENDS sea level Level change? Is Greenland’s Sea Level in Ice Sheets Human Changing History Now? Is Antarc ca’s Last Ice Age Ice Sheets 95,000 to Changing 20,000 yrs. Now? ago How Fast Can Sea Level Last Warm Change? Period How Much Ice ~125,000 yrs. Is There At ago the Poles? Future Sea Is There A Level Cri cal Tipping Point? 50/100/1000 BALTIMORE, MARYLAND What Can I h p:// desandcurrents.noaa.gov/sltrends/index.shtml Do?
‘Science Fact’: Sea Level does not change the same in every loca on. There are How Fast Can Sea local condi ons that cause it to vary from Level Change? site to site. RECORD: CURRENT SEA LEVEL WITH TRENDS What makes Current Sea sea level Level change? Is Greenland’s Sea Level in Ice Sheets Human Changing History Now? Is Antarc ca’s Last Ice Age Ice Sheets 95,000 to Changing 20,000 yrs. Now? ago How Fast Can Sea Level Last Warm Change? Period How Much Ice ~125,000 yrs. Is There At ago the Poles? Future Sea Is There A Level Cri cal Tipping Point? 50/100/1000 LEWES, DELAWARE What Can I h p:// desandcurrents.noaa.gov/sltrends/index.shtml Do?
‘Science Fact’: Sea Level does not change the same in every loca on. There are How Fast Can Sea local condi ons that cause it to vary from Level Change? site to site. SEA LEVEL RISE LAST 8000 YEARS What makes Current Sea sea level Level change? Is Greenland’s Sea Level in Ice Sheets Human Changing History Now? Is Antarc ca’s Last Ice Age Ice Sheets 95,000 to Changing 20,000 yrs. Now? ago How Fast Can Sea Level Last Warm Change? Period How Much Ice ~125,000 yrs. Is There At ago the Poles? Future Sea Is There A Level Cri cal Tipping Point? 50/100/1000 Use the black trend line for sea level rise. From 8000 to 7000 years What Can I sea level rose significantly, then slowed considerably a er that point. Do?
Note: In a graph showing a me-period of How Fast Can Sea thousands of years changes at the level of the Level Change? last century are not evident. DURING THE LAST GLACIAL MAXIMUM (LGM) ICE What makes Current Sea COVERED THE NORTHERN HEMISPHERE & SEA LEVEL sea level Level WAS MORE THAN 120 M LOWER THAN PRESENT change? Is Greenland’s Sea Level in Ice Sheets Human Changing History Now? Is Antarc ca’s Last Ice Age Ice Sheets 95,000 to Fennoscandia Ice Sheet Changing 20,000 yrs. Now? ago How Fast Can Sea Level Last Warm Change? Period How Much Ice ~125,000 yrs. Is There At ago the Poles? Future Sea Is There A Level Cri cal Tipping Point? 50/100/1000 Lauren de Ice Sheet What Can I Do?
How Fast Can Sea Ocean water was frozen into major ice sheets in Level Change? North American and northern Europe and Asia. LAST GLACIAL MAXIMUM (LGM) - OUR COASTLINE & BEACH What makes Current Sea WAS FURTHER AWAY DURING THIS COLD ICE PERIOD! sea level Level change? Is Greenland’s Sea Level in Ice Sheets Human Changing History Now? Is Antarc ca’s Last Ice Age Ice Sheets 95,000 to Changing 20,000 yrs. Now? ago How Fast Can Sea Level Last Warm Change? Period How Much Ice ~125,000 yrs. Is There At ago the Poles? Future Sea Is There A Level Cri cal Tipping Point? 50/100/1000 What Can I Do? Image from NOAA Oceans were smaller as the water was frozen into ice sheets. The Con nental Shelf (above) shows us the shoreline from that period. At the How Fast Can Sea last glacial maximum sea level was more than Level Change? 120 m below present. What makes Current Sea RECORD: HOW MUCH DID GLOBAL SEA LEVEL RISE AT THE sea level Level END OF THE LAST GLACIAL MAXIMUM (LGM). change? Is Greenland’s Sea Level in Ice Sheets Human Changing History Now? Is Antarc ca’s Last Ice Age Ice Sheets 95,000 to Changing 20,000 yrs. Now? ago How Fast Can Sea Level Last Warm Change? Period How Much Ice ~125,000 yrs. Is There At ago the Poles? Future Sea Is There A Level Cri cal Tipping Point? 50/100/1000 What Can I Figure prepared from published data by Robert A. Rohde Do?
~21,000 years ago following the end of the Last Glacial Maximum the ice sheets started to melt How Fast Can Sea causing sea level to rise over thousands of years. Level Change? EARTH HAS HAD WARM INTERGLACIAL PERIODS WHEN SEA What makes Current Sea LEVEL WAS HIGHER. ~125,000 YEARS AGO THE EARTH WAS IN sea level Level THE LAST INTERGLACIAL, A PERIOD CALLED ‘THE EEMIAN’. change? Is Greenland’s Sea Level in Ice Sheets Human Changing History Now? Is Antarc ca’s Last Ice Age Ice Sheets 95,000 to Changing 20,000 yrs. Now? ago How Fast Can Sea Level Last Warm Change? Period How Much Ice ~125,000 yrs. Is There At ago the Poles? Future Sea Is There A Level Cri cal Tipping Point? 50/100/1000 What Can I Do?
h p://www.ncdc.noaa.gov/paleo/pubs/clark2009/clark2009.html TEMPERATURES WERE 3-5 DEGREES C How Fast Can Sea WARMER MELTING ICE & SEA LEVEL Level Change? INCREASED. RECORD: IN THE EEMIAN THE HIGHER GLOBAL What makes Current Sea TEMPERATURES CAUSED SEA LEVELS TO RISE ~8M HIGHER sea level Level change? THAN TODAY Is Greenland’s Sea Level in Ice Sheets Human Changing History Now? Is Antarc ca’s Last Ice Age Ice Sheets 95,000 to Changing 20,000 yrs. Now? ago Eemian Holocene How Fast Can Sea Level Last Ice Age Last Warm Change? Period How Much Ice ~125,000 yrs. Is There At ago the Poles? Future Sea Is There A Level Cri cal Edited chart from NASA scien st Dr. James Hansen, based on proxy oxygen isotope data. 50/100/1000 h p://www.johnenglander.net/t-co2-sl-420kyr-chart Tipping Point? Locate the Eemian in the sea level sec on and What Can I use the dashed lines to es mate and record Do? sea level height at the Eemian and at the present. How Fast Can Sea Level Change? What makes Current Sea sea level Level WHAT MIGHT SEA LEVEL BE IN THE FUTURE? change? Is Greenland’s Sea Level in Ice Sheets Human Changing History Now? Is Antarc ca’s Last Ice Age Ice Sheets 95,000 to Changing 20,000 yrs. Now? ago How Fast Can Sea Level Last Warm Change? Period How Much Ice ~125,000 yrs. Is There At ago the Poles? Future Sea Is There A Level Cri cal Tipping Point? 50/100/1000 What will sea level be in 2050, 2100, 3000? In the last 100 years sea level has gone up ~ 12 inches on average. Will it con nue to rise at that What Can I same rate (linear projec on), or will it accelerate or slow? Do?
How Fast Can Sea Level Change? RECORD: WHAT MIGHT SEA LEVEL BE IN 2050 , 2100, 3000. IN THE What makes Current Sea REMEMBER IN THE LAST 100 YEARS IT HAS GONE UP GOBALLY AN sea level Level AVERGE OF 12 INCHES. WILL THIS CHANGE IN THE NEXT 100 YEARS? change? Is Greenland’s Sea Level in Ice Sheets Human Changing History Now? Is Antarc ca’s Last Ice Age Ice Sheets 95,000 to Changing 20,000 yrs. Now? ago How Fast Can Sea Level Last Warm Change? Period How Much Ice ~125,000 yrs. Is There At ago the Poles? Future Sea There have been projec ons done by many scien sts about future sea Is There A Level Cri cal level. Will the rise be at the same rate (linear)? accelerate? slow down? Tipping Point? 50/100/1000 The chart shows a set of projec ons from the IPCC, an interna onal group of scien sts selected to study and report on our changing climate. Select What Can I Do? one of the 3 projec ons to record on your chart and analyze.
Source: Advancing the Science of Climate Change, 2010, Na onal Research Council. Note: Graph based on the 2007 IPCC reported projec on of sea How Fast Can Sea level rise, edited to add ice sheets. Three different projec ons Level Change? are included (labels on right). Gray area is uncertainty. Red line is annual global sea level rise over the past half century. What makes HOW FAST HAS SEA LEVEL CHANGED IN THE PAST sea level AND HOW FAST COULD IT CHANGE IN THE FUTURE? 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? TIME TO EXAMINE YOUR EVIDENCE AND FINISH THIS SECTION What Can I OF YOUR WORKSHEET TO FIND OUT HOW FAST SEA LEVEL CAN Do? CHANGE & IF YOU FOUND A POLAR CONNECTION!
How Fast Can Sea Level Change? GREENLAND PART 3 What makes sea level SO JUST HOW change? MUCH ICE IS Is Greenland’s THERE AT THE Ice Sheets POLES? 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? ANTARCTICA How Much Ice is There at the Poles? RECORD: HOW MUCH ICE IS IN GREENLAND’S ICE SHEET? What makes Feet of Sea 7 M (~24 FT) OF SEA LEVEL RISE! sea level Level Rise in change? Greenland Ice GREENLAND Sheet Is Greenland’s Ice Sheets Feet of Sea Level Rise in Changing W. Antarc c Now? Ice Sheet Is Antarc ca’s Feet of Sea Ice Sheets Level Rise in Changing E. Antarc c Now? Ice Sheet How Fast Can Sea Level Change? How Much Ice Is There At the Poles? Is There A Cri cal The Greenland Ice Sheet holds the equivalent of 7m (24 .) Tipping Point? of sea level rise throughout the world’s oceans. If all that What Can I ice were added to the ocean the p of Florida would be Do? under water (see inset map). Inset box from R. Bell, Scien fic American, The Unquiet Ice, 2008.
How Much Ice is There at the Poles? What makes Feet of Sea WEST AND EAST ANTARCTICA sea level Level Rise in change? Greenland Ice Sheet Is Greenland’s Ice Sheets Feet of Sea Level Rise in Changing W. Antarc c Now? Ice Sheet Is Antarc ca’s Feet of Sea Ice Sheets Level Rise in Changing E. Antarc c Now? Ice Sheet How Fast Can Sea Level Change? How Much Ice Is There At the Poles? Is There A ANTARCTICA Cri cal Tipping Point? West Antarc ca East Antarc ca What Can I Do?
THE Antarc c Ice Sheet is much larger than Greenland (~ 7 mes larger!) and is really two How Much Ice is There at the Poles? separate sec ons of ice – West and East. RECORD: HOW MUCH ICE IS IN WEST ANTARCTIC ICE SHEET = What makes Feet of Sea 6 M (~19 FT) OF SEA LEVEL RISE sea level Level Rise in change? Greenland Ice Sheet Is Greenland’s Ice Sheets Feet of Sea Level Rise in Changing W. Antarc c Now? Ice Sheet Is Antarc ca’s Feet of Sea Ice Sheets Level Rise in Changing E. Antarc c Now? Ice Sheet How Fast Can Sea Level Change? How Much Ice Is There At the Poles? Is There A Cri cal The West Antarc c Ice Sheet is close to the Tipping Point? West Antarc ca same size as Greenland yet some of the ice What Can I sits below sea level. Mel ng the ice res ng Do? below sea level will not add to global sea level so the West Antarc c Ice Sheet holds How Much Ice is 6m (19 .) of sea level rise. This is enough to There at the Poles? flood the p of Florida (see inset). RECORD: THE EAST ANTARCTIC ICE SHEET = 52 M (~170 FT) OF What makes Feet of Sea sea level Level Rise in SEA LEVEL RISE change? Greenland Ice Sheet Is Greenland’s Ice Sheets Feet of Sea Level Rise in Changing W. Antarc c Now? Ice Sheet Is Antarc ca’s Feet of Sea Ice Sheets Level Rise in Changing E. Antarc c Now? Ice Sheet How Fast Can Sea Level Change? How Much Ice Is There At the Poles? Is There A Cri cal Tipping Point? East Antarc ca What Can I Do? The East Antarc c Ice Sheet is the largest poten al contributor of sea level rise to the global oceans. It holds 52m (170 .) of sea How Much Ice is level rise, an amount that would cover Florida There at the Poles? with water (see inset). CONSIDER THE POTENTIAL! HOW MUCH ICE IS THERE AT What makes THE POLES THAT COULD ADD TO GLOBAL SEA LEVEL? 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 EXAMINE YOUR EVIDENCE AND FINISH THIS SECTION OF YOUR Cri cal WORKSHEET TO FIND OUT HOW MUCH ICE IS AT THE POLES & IF Tipping Point? YOU FOUND A POLAR CONNECTION! What Can I Do?
How Fast Can Sea Level Change?