Problems With Rising Sea Levels

  • Whatsapp

Problems With Rising Sea Levels – Summary of the future We don’t want research on the effects of climate change on sea levels.

By 2050, 800 million people will live in cities where sea levels could rise by more than half a meter

Problems With Rising Sea Levels

Problems With Rising Sea Levels

Many coastal communities around the world already live with the threat of rising sea levels and coastal flooding; where climate impacts can swamp neighborhoods, put people’s lives at risk and wreak economic havoc. But, if the world does not commit to meeting the Paris Agreement goals of reducing carbon emissions and limiting the increase in global average temperature to 1.5

Tonga: On The Frontline Of Sea Level Rise

C, most of the world’s cities will face extraordinary threats from rising sea levels and coastal flooding by mid-century. According to a new analysis by The Future We Don’t Want, the number of urban residents at risk from rising sea levels, if emissions are not reduced, could amount to more than 800 million people, living in 570 cities, by 2050. , it is important that the commitments made under the Paris Agreement are respected if the social and economic impacts of catastrophic climate change are to be avoided.

Estimates suggest that the global economic cost to cities from rising sea levels and inland flooding could amount to $1 trillion by mid-century. As with other climate risks, local factors mean that cities will experience sea level rise at different rates. Cities on the US East Coast, including New York and Miami, are particularly vulnerable, along with major cities in Southeast Asia, such as Bangkok and Shanghai. In the United States, cities on the East Coast are seeing sea level rise two to three times faster than the global average, while cities along China’s Yellow River Delta are experiencing sea level rise of more than 9 inches. (9 inches) per year. According to a 2016 report by Christian Aid; Miami, Guangzhou and New York are the top three cities by asset value exposed to coastal flooding between 2010 and 2070; between 2 and 3.5 trillion dollars. But Calcutta, Mumbai and Dhaka have the highest number of people at risk of coastal flooding; between 11 and 14 million.

“Hurricane Sandy had a devastating effect on the entire city… 44 New Yorkers lost their lives, nearly 90,000 buildings were in flood zones, 2 million people lost power, and the city suffered nearly 19 million losses. billions of dollars”. – Jainey Bavishi, Director of Recovery and Resilience

Although geographic variations make some cities vulnerable to sea level rise and coastal flooding, such as low-lying delta cities in hurricane and typhoon zones, the degree of urban climate risk is intensified by socioeconomic conditions and forms and forms of the built environment. In New York City, some of the world’s most valuable real estate is located in the flood-prone area of ​​the southern tip of Manhattan, and an estimated $129 billion worth of real estate lies within the city’s floodplain.

The Potential Impact Of Rising Sea Levels On China’s Coastal Cultural Heritage: A Gis Risk Assessment

When Hurricane Sandy hit New York in 2012, coastal flooding affected approximately 90,000 buildings in New York City alone, while 2 million people were left without electricity, causing extensive damage, disrupting business activity, and costing the city more than $19 billion. of dollars. “The hurricane has exacerbated challenges across the city,” said Jainey Bavishi, New York City’s director of recovery and resilience, “whether it’s inadequate infrastructure, a lack of affordable housing, or risk existing environmental”. As water seeped into Manhattan, subway stations and electrical substations were flooded, affecting critical services such as hospitals; some of them had to be moved.

While the financial scope of the storm may be unique to New York, given the city’s real estate value and status as a global financial center, many other cities are facing a common problem: How can cities increase their resilience to climate change while in difficulty? at the same time meet the housing demands of fast-growing, low-income residents?

This is the situation in Dar es Salaam, the largest city in Tanzania. An estimated 8% of the city is already below sea level, putting more than 143,000 people at risk from coastal flooding. But very rapid population growth of 5.3% per year means that unplanned informal settlements are expanding into flood-prone areas, where the poor are particularly vulnerable to climate impacts. There, residents’ vulnerability is increased by inadequate stormwater drainage, sewer, and plumbing systems that result in public health risks during floods.

Problems With Rising Sea Levels

Dar es Salaam’s neighborhoods and road infrastructure are often flooded, as are the river valleys that run through the city. When there is a flood, the transport system is disrupted and it can take two to three hours to reach the destination, while the city center often becomes inaccessible by public transport. Storms and heavy rain have further damaged electricity poles, causing regular blackouts and the resulting economic impact, according to Grace Mbena, Dar es Salaam’s chief urban planner.

Line In The Sand: How Sea Level Rise Is Challenging International Law

The Indonesian capital Jakarta, meanwhile, was hit by floods in 1976, 1990, 1996, 2002, 2007 and 2012 and faces the same problems as Dar es Salaam, but on a megacity scale. In North Jakarta, nearly 90% of the metropolitan area is already below sea level, and more than 60% of the city’s 10.6 million residents, and particularly those living in Kampungs – poor, informal and high density – are vulnerable to flooding. . Based on experience and predictions, “every five or six years there is a bigger flood,” said Aisa Tobing, senior consultant at the Jakarta Research Council. Jakarta is particularly vulnerable to sea level rise and tidal surges as it is also experiencing one of the fastest rates of land subsidence in the world. The digging of illegal wells deflates the city from below, while the weight of the expanding city adds further pressure, causing the ground to sink by 20-25 cm per year; especially in some areas of North Jakarta.

“Based on climate adaptation research, in 2025, without increasing adaptive capacity, more villages will be highly vulnerable to climate change.” – Aisa Tobing, Senior Consultant, Jakarta Research Council

In Jakarta, climate change, together with urban development patterns and geographical conditions of a low-delta city, reinforce each other in a vicious circle. The result is flooded homes and paralyzed metropolitan infrastructure; together with the increase in health risks due to the spread of waste-laden and highly polluted water. Even without the ongoing global warming that will occur by 2050, absent emissions reductions in line with the Paris Agreement, a recent New York Times article indicates that hydrologists estimate that Jakarta has 10 years left to stop the its collapse. Otherwise, millions of people will be left homeless, most of the city’s infrastructure will be destroyed and the country’s economy will be severely affected.

Reducing emissions in line with the Paris Agreement means that the worst-case climate scenario will not occur, but even with limited sea level rise, global warming and coastal flooding will certainly get worse.

Sea Level Rise

Despite all the devastation brought by Hurricane Sandy, the climate threat is a poignant reminder of the city’s vulnerability, along with the economic importance of keeping New York safe. After the hurricane, the city government called on academic experts, private sector and regional agencies to strengthen city policies and plans to reduce climate risks; including the effects of sea level rise and flooding. “We are very fortunate to work in New York with an independent group of scientists called the New York City Panel on Climate Change (NPCC). Every few years they release projections about how climate change could affect New York City and this is mandated by local law” , Miss Bavishi said. Based on expert advice, New York City has developed a resilience strategy to strengthen cost containment, protect critical services and infrastructure, improve buildings to withstand future climate impacts, and keep neighborhoods safe and prepared . There is also a new city task force, which is working with community organizations to better understand the role these organizations play in Sandy recovery efforts. According to Bavishi, the task force recommends improving coordination between government and community organizations by providing government support for local capacity building of community organizations and improving coordination of financial resources for organizations before and after disasters.

New York City is working to protect its 520 miles of coastline through a layered approach, focusing first on the most vulnerable areas. The city has completed the Rockaway Boardwalk, which features cost-effective protection, and the authority is now moving forward with final design for the project on Manhattan’s east side, where the elevated park will include a flood wall so that New Yorkers can’t miss the beach area. access to one of the most densely populated areas of the city. Other comprehensive measures include an updated building code that contributes to new flood maps and increased height requirements for future structures along with new zoning designations called “coastal special hazard districts,” which limit density in the most at-risk areas.

In Dar es Salaam, the response to sea level rise and flooding has focused on limiting construction in flood-prone areas to reduce the spread of vulnerable informal settlements. To do this, property rights

Problems With Rising Sea Levels

Solutions to rising sea levels, rising sea levels interactive map, what are rising sea levels, rising sea levels effects, rising sea levels, why are sea levels rising, rising sea levels facts, rising sea levels climate change, global warming rising sea levels, rising sea levels data, rising sea levels graph, are sea levels rising

Related posts