![]() ![]() Unless otherwise noted, this report defines the risk zone as the area exposed to a 10-year flood threat in 2050, under the moderate emissions cuts known technically as Representative Concentration Pathway (RCP) 4.5, and under the median projections for sea-level rise corresponding to this emissions level as described in Kopp et al. Those floods can damage and devalue homes, degrade infrastructure, wash out beaches, rust out car underbodies, promote mold, and more.įuture emissions will shape the extent of those harms - and the number of homes in each coastal region’s “risk zone” - in the years ahead. And yet in the years after the 2009 Copenhagen meeting, a third of the country’s coastal states experienced a higher rate of new home building in areas at risk of 10-year floods than in areas not at risk.īy boosting the average water height, sea level rise is projected to make the kinds of intermittent floods that coastal communities see on average once a decade - meaning there’s a 10% annual risk of this type of devastating flood- reach farther inland than they do today. Over the past decade, public interest in sea level rise has grown, tidal flooding has increased in many coastal communities, and global attention has coalesced around the dangers of climate change in international negotiations in Copenhagen and Paris. The figures for 2100 are more than two times higher - and more than three times higher if pollution grows unchecked. If the world makes moderate cuts to greenhouse-gas pollution - roughly in line with the Paris agreement on climate, whose targets the international community is not on track to meet - some 17,800 existing homes built after 2009 will, by the year 2050, risk inundation by a 10-year flood. This report improves those results by incorporating full home footprint data instead of point location estimates (see methodology), and also provides results for bigger floods in addition to the annual ones. The research projected how many homes will become exposed to on-average annual ocean flooding in the coming decades - depending on what choices the world makes around greenhouse-gas pollution today. In 2018, Climate Central and Zillow produced the first nationwide analysis of the number of new homes in areas vulnerable to coastal flooding in all 24 coastal states and the District of Columbia. That has put homeowners, renters, and investors in danger of steep personal and financial losses in the years ahead. Across the United States, coastal communities have recently built tens of thousands of houses in areas at risk of future flooding driven by sea-level rise from climate change. The post-Sandy rebuilding was a striking example of a broader pattern. In the years that followed, builders put up new houses and reconstructed damaged ones - in many areas that will be vulnerable to more flooding in the future. In 2012, Hurricane Sandy slammed into New Jersey, producing a major storm surge and damaging or destroying many thousands of homes. Florida would have the most homes at risk (1.58 million) by 2100, followed by New Jersey (282,354), Virginia (167,090), Louisiana (157,050) and California (143,217)-assuming levees and other infrastructure defenses hold.New York, Tampa, Virginia Beach and 21 other cities built at least 100 homes in the risk zone during that time. By 2050, those figures are 802,555 homes worth $451 billion – and 19,250 of those homes were built after 2009.Unchecked greenhouse gas emissions would put 3.4 million existing homes worth $1.75 trillion at risk of inundation from a 10-year flood by 2100. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |