A description and explanation of ocean expansion as caused by global warming, leading to rises in the sea level and an increased threat of flooding. Coastal flooding linked to climate change could cost trillions of dollars and affect hundreds of millions of people in the U.S. and around the world.
Meeting the challenge of climate change, flooding and coastal change. In addition, students could develop strategies for shoreline and floodplain management using hard and soft engineering approaches, together with the managed retreat and do nothing models. “We need more thoughtful and forward-looking planning.” Topics "Adaption strategies including building and enhancing coastal protection structures, such as dykes or sea walls, as well as deploying coastal warning systems and increasing preparedness, according to Kirezci. Flooding typically occurs during seasonal high tides (“king tides”) and storms that push water toward the shore. Under the same scenario, coastal assets such as buildings, roads and other infrastructure worth up to US$14.2 trillion (A$19.82 trillion) could be threatened by flooding. Before then: In just 30 years, nearly 204 million people and $11 billion in assets could be exposed to coastal flooding, up 16% and 14% from today, respectively, under the moderate scenario.
The analysis is based on a climate scenario where carbon dioxide concentrations in the atmosphere continue to rise rapidly.“We are attempting to understand the magnitude of the global scale impacts of future coastal flooding,” Ian Young, a professor at the University of Melbourne and an author of the study, told CNBC.“Globally we need to understand that changes of this nature will occur by 2100 and we need to plan how we are going to respond,” he said. Vulnerable areas need to start building coastal defenses, we need to increase our preparedness, and we need to be following strategies to mitigate climate change,” Kirezci said.The study appeared in the peer-reviewed British journal Scientific Reports. It will also include coastal retreat – allowing low-lying coastal areas to flood, and moving human development inland to safer ground. Under a scenario of high greenhouse gas emissions and assuming no flood defences, such as sea walls, we estimate that the land area affected by coastal flooding could increase by 48% by 2100.
Maryland Sea Grant is working with coastal communities to help them prepare.
Even as floods worsen, fewer Americans are purchasing flood insurance, some of whom cannot afford coverage.
Description Classroom Ideas. This adaptation will include building and enhancing coastal protection structures such as dykes or sea walls. Coastal flooding made worse by climate change could damage assets worth up to $14.2 trillion by 2100 as rising seas inundate coastal homes and infrastructure, according to new research published on Thursday in Without worldwide investment in flood defenses or a decrease in global emissions, the outlook is stark: Within the century, the land area flooded will increase by 48% (roughly the size of France), the population impacted will increase by 52% (about 287 million people) and the infrastructure affected will increase by 46%, which will comprise about 20% of global GDP, researchers warned.
In the U.S., where 40% of the country's population lives in high density areas on the coast, rising seas are causing an extraordinary and record surge in coastal flooding, according to the National Oceanic and Atmospheric Administration.
The study admitted that in many locations, coastal defenses are commonly deployed and by 2100, "it is expected that adaptation and specifically hard protection will be widespread, hence these estimates need to be seen as illustrations of the scale of adaptation needed to offset risk." "Climate change is also increasing the frequency of extreme seas, which will further increase the risk of flooding.”Floods that occur once every 100 years could now occur once every 10 years in 2100, the research showed, mainly as a result of sea-level rise. Elsewhere, extensive coastal flooding is also projected in:Our large-scale global analysis has some limitations, and our results at specific locations might differ from local findings.
We combined this model with topographic data (showing the shape and features of the land surface) to identify areas at risk of coastal flooding. We want to hear from you.Sign up for free newsletters and get more CNBC delivered to your inboxGet this delivered to your inbox, and more info about our products and services. “What the data and our model is saying is that compared with now, what we see as a 1-in-100-year extreme flood event will be 10 times more frequent because of climate change,” Kirezci said.The authors also suggest that the global population exposed to coastal flooding could be up to 287 million by 2100, which is 4.1% of the world's population.The areas predicted to be most impacted by flooding are portions of the eastern U.S., northwest Europe, southeast and east Asia, and northern Australia, according to the new research.In the U.S., the coasts of North Carolina, Virginia and Maryland are most at risk, the study found.Researchers combined data on global sea levels during extreme storms with projections of sea-level rises under different greenhouse-gas emission scenarios.
It will also require deploying coastal warning systems and increasing flooding preparedness of coastal communities. Many cities around the world are exposed.
Climate change is increasing the destructive power of flooding from extreme rain and rising seas and rivers.
Geography. It’s clear the world must ramp up measures to adapt to coastal flooding and offset associated social and economic impacts. But done correctly,
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