Cities Threatened By Climate Change

נשלח 23 בספט׳ 2014, 13:59 על ידי Sustainability Org   [ עודכן 23 בספט׳ 2014, 14:04 ]
by AJ Artemel, Aug 13, 2013

Climate change is one of the most serious issues facing the world's cities in the 21st century, but so far policymakers, planners, and scientists have come up with few solutions to prevent—or mitigate—its calamitous effects.

While flooding disasters like Hurricanes Katrina and Sandy have brought attention to the dangers posed by stronger storms, there are plenty of other threats—such as rising sea levels—that might be even more pressing. Wildfires and drought have already heavily damaged the American Southwest, while flooding threatens low-lying island nations.

Here are a few cities that will soon be in danger.

Male, Maldives

The capital city of this archipelago nation occupies one small island, which will soon be overwhelmed by rising sea levels. The former prime minister of the Maldives went as far as to try to buy land in other countries for his citizens to resettle. This plan is not going forward, though with an average elevation of three feet above sea level, the nation is running out of time.

Phoenix, Arizona

The city's dependence on drought-stricken desert waterways is leading to disaster, as several million people drain available resources. When the water runs out, will the city wither? Dust storms are already a problem, and dry conditions are leading city governments to encourage residents to tear up their lawns.

Kivalina, Alaska

The residents of this small Alaskan island are slated to become the first climate change refugees. The narrow spit of land is normally protected from erosion by sea ice, but the melting of this ice means that the land is slowly disappearing.

New York, New York

Hurricane Sandy showed the somewhat perilous position of America's cultural capital, as subways and tunnels flooded, transformers exploded, and coastal communities such as Coney Island and the Rockaways were left reeling months after the disaster. Rising sea levels and more frequent storms might prompt the permanent evacuation of some areas.

Las Vegas, Nevada

Like Phoenix, Las Vegas is faced with major water shortages as its primary source, the Colorado River, slowly dries up. Water levels in Lake Mead, the city's principle reservoir, have already dropped considerably.

Miami, Florida

Like much of South Florida, Miami sits just above sea level, putting it in danger of flooding. Florida used to be all marsh before developers built vacation towns on drained land and forced the Everglades to retreat.

Mekong Delta, Vietnam

Deltas are extremely low-lying areas, formed by alluvial sediments built up by rivers. The Mekong possesses some resiliency (with the exception of its largest settlement, Ho Chi Minh City), since many of its inhabitants have adopted a life on the water with boats and stilt houses.

New Orleans, Louisiana

As Hurricane Katrina showed, New Orleans is in grave danger of flooding, since much of it sits below sea level.

Dhaka, Bangladesh

Much of Bangladesh sits on the Ganges Delta, an extremely populous and flood-prone area. Tropical storms and heavy monsoons have already claimed many lives, though sea level rise and stronger storms could exacerbate the danger.

Cities of the Sahel, Subsaharan Africa

The Sahel is a large band of semi-arid grassland south of the Sahara desert. Drought is causing the Sahara to expand and push south, displacing hundreds of thousands of people.

Suzhou, China

This canal city, famed for its beautiful gardens, faces a similar fate to many Delta cities. It, as well as nearby Shanghai, sit on the shallow banks of marshy rivers.

Venice, Italy

Not only are water levels in the Adriatic Sea rising, but Venice is also sinking as its wood stilt foundations rot and as fresh water aquifers are depleted. Several sea barriers at the entrance to its lagoon aim to stop flood waters, but the Piazza San Marco is still inundated several times per year.

Rotterdam, The Netherlands

Though much of the Netherlands sits below sea level, the country is perhaps the best prepared to face sea level rise, since it has been fending off the North Sea for hundreds of years. Barrier systems, dikes, and floating houses are all part of the solution.

Tarawa, Kiribati

This low-lying Pacific nation will be one of the first to disappear beneath the waves. Its leaders have recently asked Australia and New Zealand to take in its citizens as refugees. Its flag is a portent of its fate: a bird looks for a place to land among the waves.