The National Oceanic and Atmospheric Administration's Sea Level Rise and Coastal Flooding Impacts data viewer provides a preliminary look at how different amounts of sea level rise would affect coastal flooding in the United States. See how sea-level rise from global warming puts New York City at risk—and find other hot spots threatened by rising seas on the Climate Hot Map. Users can simulate inundation associated with one to six feet of sea level rise at various scales along the contiguous United States coast, except for the Great Lakes. Use the vertical slider to simulate water level rise, the resulting inundation footprint, and relative depth. Water vapor is the key precursor for rain and snow and one of the most important greenhouse gases in the atmosphere. Two major mechanisms are causing sea level to rise. Click on icons in the map to view sea level rise simulations at specific locations. For example, when the global atmospheric CO 2 level reaches 930 gigatons, Boston will be due for about 9 feet of sea level rise. But the rise is by no means uniform. These maps show the average amount of water vapor in a column of atmosphere by month. In an interactive article titled “If All the Ice Melted,” National Geographic invites you to “Explore the world’s new coastlines if sea level rises 216 feet. Water levels are relative to local Mean Higher High Water Datum. The maps here show the world as it is now, with only one difference: All the ice on land has melted and drained into the sea, raising it 216 feet and creating new shorelines for our continents and inland seas.” In addition to overall flooding estimates, users can see the relative social vulnerability of coastal regions; areas currently already subject to This map viewer illustrates the scale of potential coastal flooding after varying amounts of sea level rise. That's enough water … Water Vapor. First, shrinking land ice, such as mountain glaciers and polar ice sheets, is releasing water … The map shows the areas at risk of flooding with every foot of sea level rise. Atmosphere Warming water and melting land ice have raised global mean sea level 4.5 centimeters (1.7 inches) from 1993 to 2008. Thermal expansion: When water heats up, it expands.About half of the sea-level rise over the past 25 years is attributable to warmer oceans simply occupying more space. Use the nation-wide map to explore NOAA’s projections for sea level rises at 2 and 6 feet, or search by any address. Green areas may flood, but more data is … Global warming is happening twice as fast in the Arctic as it is in the rest of the world, and sea ice is melting at a rapid pace. “The rate of sea level rise is currently doubling every seven years, and if it were to continue in this manner, Ponzi scheme style, we would have 205 feet of sea level rise by 2095,” he says.

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