The best of EcoWatch, right in your inbox. Sign up for our email newsletter!
Study Finds Coastal Flooding From Sea Level Rise May Cost $100,000B Annually by 2100
Coastal regions may face massive increases in damages from storm surge flooding over the course of the twenty-first century. According to a new study published in the Proceedings of the National Academy of Sciences, global average storm surge damages could increase from about $10-40 billion USD per year today to up to $100,000 billion USD per year by the end of century, if no adaptation action is taken.
The study lead by the Berlin-based think-tank Global Climate Forum (GCF) presents, for the first time, comprehensive global simulation results on future storm surge damages to buildings and infrastructure. Drastic increases in these damages are expected, on one hand, due to rising sea-levels and, on the other hand, due to population and economic growth. Asia and Africa may be particularly hard hit because of their rapidly growing coastal mega-cities, such as Shanghai, Manila or Lagos.
“If we ignore this problem, the consequences will be dramatic,” explained Jochen Hinkel from GCF and the study's lead author. In 2100, up to 600 million people (around five percent of the global population) could be affected by coastal flooding if no adaptation measures are put in place.
“Countries need to take action and invest in coastal protection measures, such as building or raising dikes, amongst other options,” urged Hinkel.
With such protection measures, the projected damages could be reduced to below $80 billion USD per year during the twenty-first century. The researchers found that investments level of $10 to 70 billion USD per year could achieve such a reduction.
Prompt action is needed most in Asia and Africa, where today large parts of the population are already affected by storm surge flooding. Yet even Germany must invest in coastal protection. It is not only dikes that are needed however. Alternative and more flexible coastal protection measures that better fit the natural environmental should also be developed. Examples of such alternatives to dikes are the reintroduction of mangrove forests, the rehabilitation of coastal dunes or artificial oyster banks. Meeting the challenge of adapting to rising sea-levels will not be easy.
used. The shaded areas show the respective uncertainty ranges defined by the maximum and minimum impacts.
“Poor countries and heavily impacted small-island states are not able to make the necessary investments alone," explained Hinkel. "They need international support.”
Adding to the challenge, international finance mechanisms have thus far proved sluggish in mobilizing funds for adapting to climate change, as the debate on adaptation funding at the recent climate conference in Warsaw once again confirmed.
“If we do not reduce greenhouse gases swiftly and substantially, some regions will have to seriously consider relocating significant numbers of people in the longer run,” Hinkel said.
Yet regardless of how much sea-level rise climate change brings, careful long-term regional and urban planning can ensure that development in high-risk flood zones is avoided. This long-term perspective is however a challenge to bring about, as coastal development tends to be dominated by short-term interests of, for example, real-estate and tourism companies, which prefer to build directly at the waterfront.
Visit EcoWatch’s CLIMATE CHANGE page for more related news on this topic.
EcoWatch Daily Newsletter
By Emily Deanne
Shower shoes? Check. Extra-long sheets? Yep. Energy efficiency checklist? No worries — we've got you covered there. If you're one of the nation's 12.1 million full-time undergraduate college students, you no doubt have a lot to keep in mind as you head off to school. If you're reading this, climate change is probably one of them, and with one-third of students choosing to live on campus, dorm life can have a big impact on the health of our planet. In fact, the annual energy use of one typical dormitory room can generate as much greenhouse gas pollution as the tailpipe emissions of a car driven more than 156,000 miles.
By Lorraine Chow
Kokia drynarioides is a small but significant flowering tree endemic to Hawaii's dry forests. Native Hawaiians used its large, scarlet flowers to make lei. Its sap was used as dye for ropes and nets. Its bark was used medicinally to treat thrush.
States that invest heavily in renewable energy will generate billions of dollars in health benefits in the next decade instead of spending billions to take care of people getting sick from air pollution caused by burning fossil fuels, according to a new study from MIT and reported on by The Verge.
Hawaii's Kilauea volcano could be gearing up for an eruption after a pond of water was discovered inside its summit crater for the first time in recorded history, according to the AP.
By Kristin Ohlson
From where I stand inside the South Dakota cornfield I was visiting with entomologist and former USDA scientist Jonathan Lundgren, all the human-inflicted traumas to Earth seem far away. It isn't just that the corn is as high as an elephant's eye — are people singing that song again? — but that the field burgeons and buzzes and chirps with all sorts of other life, too.
Humanity faced its hottest month in at least 140 years in July, the US National Oceanic and Atmospheric Administration (NOAA) said on Thursday. The finding confirms similar analysis provided by its EU counterparts.
By Hans Nicholas Jong
Indonesia's president has made permanent a temporary moratorium on forest-clearing permits for plantations and logging.
It's a policy the government says has proven effective in curtailing deforestation, but whose apparent gains have been criticized by environmental activists as mere "propaganda."