Rise Of Sea Levels Due To Global Warming

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Rise Of Sea Levels Due To Global Warming – Global average sea levels have risen about 8 inches since 1900 due to warming ocean expansion, melting mountain glaciers, and shrinking ice sheets in Greenland and Antarctica. This increase has led to an increase in flooding in coastal cities, both during storms and during “sunny day” flooding caused by tides alone. These floods disrupt economies, complicate the delivery of emergency services, and disproportionately affect the elderly and people of low socioeconomic status.

Global warming has led to an increase in some types of extreme weather, especially those related to temperature. Heat waves occur due to global warming due to climate change and it is becoming more and more common for people to experience extremely hot days and nights. Extreme cold events are becoming less frequent and less severe than in recent decades. Climate change is also leading to an increase in heavy rain and snowfall as the Earth’s atmosphere becomes warmer and wetter. Climate change is likely to worsen drought because higher surface temperatures increase evaporation, making land drier than it would be in cooler temperatures. Hurricanes are becoming more intense, with more rainfall and greater range. Additionally, sea level rise will contribute to the intensification of storms.

Rise Of Sea Levels Due To Global Warming

Rise Of Sea Levels Due To Global Warming

The ocean is warming and becoming more acidic, harming corals and other marine life. Increasing changes in global climate and ocean chemistry threaten the survival of coral reefs. The relationship between temperature and corals derives primarily from the bleaching response of corals to higher than normal temperatures. Recent increases in ocean temperatures have significantly increased the exposure of corals to high temperature events, causing severe declines in corals worldwide. In addition, CO2 from burning fossil fuels is released into the ocean to form carbonic acid, which gradually acidifies the ocean and slows coral growth.

The Hardest Part Of Dealing With Sea Level Rise Will Be The Uncertainty

Some future climate change is inevitable and requires action to adapt to current and projected impacts. From roads to farms, buildings to subways, jobs to leisure activities, much of what people use and do every day was optimized for the climate of the 19th and 20th centuries. These were built with specific temperature ranges in mind, patterns of rainfall, the frequency of extreme events and other relevant manifestations of climate change. Even if humanity succeeds in limiting global climate change according to current targets, adaptation will be necessary to protect people, ecosystems, infrastructure and cultural resources from the effects of climate change, many of which are obvious.

Appropriate measures to adapt to climate change vary from country to country. In some regions, incremental steps are sufficient to manage risk for decades to come. Elsewhere, changes such as relocation may be necessary. Adaptation strategies range from engineering and technical solutions to social, economic and institutional approaches. Global warming is real and new scientific findings are needed to combat this change in today’s world towards a sustainable future.

The UN climate panel and NASA warned several years ago that many effects of climate change are already irreversible and that sea levels will rise by at least 90 centimeters in the coming decades.

In the near future, American cities such as New York, Houston, New Orleans, Miami, San Diego and San Francisco will all be covered by water. Many other international cities will suffer the same fate. The Intergovernmental Panel on Climate Change has warned that it is clear that humans are warming the planet, causing rapid changes in the atmosphere, oceans and polar regions, and increasing extreme weather events worldwide.

Is The Rate Of Sea Level Rise Increasing?

The IPCC released its Sixth Assessment Report on August 9, 2021. The report by 234 scientists from around the world summarizes current climate research on global change and the future impacts of rising temperatures. I was one of those researchers.

The facts about climate change have been clear for a long time, and the evidence continues to mount. The warning signs of climate change have been evident over the past decade, with new emergencies emerging each time outstripping the previous ones.

The Earth as we know it has been fundamentally altered by the abuse of fossil fuels and natural resources. Our lives and livelihoods are at risk of suffering forever from the consequences of our actions.

Rise Of Sea Levels Due To Global Warming

Global temperatures are rising, droughts and fires are increasing, storms are becoming more intense, catastrophic floods are occurring, and sea levels are rising.

Scientists Warn Of Catastrophic Sea Level Rise, Unless Major Climate Change Action Is Taken

Sea-level rise will increase the vulnerability of cities and associated infrastructure along many coastlines around the world through flooding, erosion, destruction of coastal ecosystems, and pollution of surface and groundwater.

Future sea level rise will affect all coastal countries. However, the greatest impact will be felt in Asia in the coming decades due to the number of people living in the continent’s low-lying coastal areas. Mainland China, Bangladesh, India, Vietnam, Indonesia, and Thailand have the largest populations living on land projected to be below the average annual coastal flood level by 2050. Together, these six countries account for approximately 75% of the 300 million earth. population based. We face the same weakness in the middle of this century.

The main causes of rising sea levels around the world are rising global temperatures, expanding ocean waters and melting land ice. About one-third of the actual increase is due to thermal expansion, which causes water to increase in volume as it heats up. The rest is formed by the melting of ice on the ground.

In the 20th century, melting was largely confined to mountain glaciers, but a major concern for the future is the melting of the giant ice sheets in Greenland and Antarctica. If all the ice in Greenland were to melt, global sea levels would rise by 7 meters.

How Sea Level Rise Puts 3 Cr Indians At Risk By 2050

Antarctica is an existential threat to coastal countries. It is twice the size of Australia (over 20,000 times the size of Singapore!), 2-3 kilometers thick, and has enough water to raise sea levels by 65 meters. This exceeds the height of the Singapore Arts and Science Museum and the Supertree at Gardens by the Bay. Even just a few percent of the melting of the Antarctic ice sheet would have devastating effects.

Alarmingly, satellite-based measurements of the ice caps in Greenland and Antarctica show that this melting is accelerating. Greenland is today the largest contributor to global sea level rise. Greenland lost 286 billion tons of ice from 2010 to 2018, after only dumping about 51 billion tons of ice into the sea between 1980 and 1990.

76 trillion liters of water are added to the ocean each year, equivalent to 114 million Olympic-sized swimming pools.

Rise Of Sea Levels Due To Global Warming

Sea level rise by 2050 is certain. Regardless of how quickly countries are able to reduce emissions, the world is on track to see sea levels rise by about 15 to 30 centimeters by mid-century due to long-term feedbacks of oceans and sea layers. ice to heating. . Sea level rise is expected to continue slowly for centuries, even if the climate remains stable. This so-called “sea-level rise initiative” will lead to long-term commitments to adapt to sea-level rise, but coastal policy and practice are just beginning to understand this.

Climate Change Risk Perception

Beyond 2050, sea level rise will become increasingly sensitive to global emissions choices. If countries choose to continue on their current path, greenhouse gas emissions could lead to a warming of 3 to 4 degrees Celsius and sea levels to rise by up to 1 meter by 2100.

In the most extreme emissions scenario, the Greenland and Antarctic ice sheets could disappear quickly and sea level rise could approach 2 meters by the end of the century. For coastal states like Singapore, sea level rise is now more of a reality than an existential threat.

According to the Paris Agreement, if the world warms by 2 degrees, sea level rise is likely to fall by about half a meter by 2100.

Also, the more the world limits greenhouse gas emissions, the less likely it is that the Greenland and Antarctic ice sheets will disappear quickly.

Climate Change: How Cities Affected By Sea Level Rise

But time is running out to meet the ambitious target set out in the Paris Agreement to limit temperature rise to below 2°C above pre-industrial levels.

We must hold our elected officials accountable for the promises they make about climate change. In fact, the reductions could be much larger than those promised by countries at the UN climate summit, COP26, to be held in Glasgow in November.

Fortunately, attitudes around the world towards climate change have changed over the past decade. Where there was once ignorance, carelessness and mistrust about climate change, there is now concern.

Rise Of Sea Levels Due To Global Warming

As individuals, we must add to our lives to contribute to the fight to tackle the climate crisis, rather than depriving ourselves. These include volunteering, activism and raising awareness with others about the impact climate change has on our lives. All these positive solutions, combined with the effort to live a more sustainable life, can make a big difference.

Sea Level Rise From Climate Change Could Exceed The High End Projections, Scientists Warn

Advances in technology are also a source of hope. Solar energy, wind energy and battery technology are now much cheaper and more efficient.

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