Sea Level Rise

Sea level rise refers to the average increase in the level of the world’s oceans. It could be one of the most devastating impacts of the climate crisis. Climate CrisisThe current moment where we are observing increasingly severe climate impacts and running the risk of catastrophic, irreversible changes in…Read on اقرأ المزيد

Causes and effects of sea level rise

The two main reasons for sea level rise are thermal expansion of the ocean (the increase in water volume due to rising temperatures) and the additional water from melting glaciers and ice sheets. You can use this interactive map to see how sea level rise might impact the shoreline of your country or city.

Sea level rise poses a danger to the habitability of islands and coastal areas, with grave socio-economic repercussions. Impacts include the erosion of shorelines and mass displacement of human populations. The danger is more acute for 900 million people living in coastal zones at low elevation – 10 percent of the world’s population.

The impacts could get much worse in the case of run-away climate change Run-Away Climate ChangeRun-away climate change is already possible under current levels of global warming. However, beyond certain tipping points, namely the 1.5-2°C…Read on اقرأ المزيد . In the geological past, CO2 concentrations higher than 350 parts per million (ppm) have corresponded with a sea level of more than 60m higher than today.

Sea level rise in the 21st century

For 2000 years prior to the 20th century, sea levels hadn’t changed much at all. But since 1900, global sea levels have risen by 0.2 m, a third of which occurred since 1993. Due to the accelerating pace of global heating Global HeatingThe increase in average global temperatures, which has been primarily driven by anthropogenic greenhouse gas emissions since the start of…Read on اقرأ المزيد , the annual rate of sea level rise could triple by the year 2100, potentially resulting in a total rise ranging from 0.43 m to 0.84 m, depending on levels of greenhouse gas emissions Greenhouse Gas (GHG) EmissionsGases that trap infrared rays in the atmosphere, contributing to global heating. Examples include carbon dioxide (CO2), methane (CH4), nitrous…Read on اقرأ المزيد . The most optimistic scenario predicated on keeping the rise in global temperature below the Paris Target Paris Targets: 2° and 1.5° TargetKeeping the global mean temperature below 1.5 °C or 2°C heating compared to pre-industrial levels. Temperatures are expected to be…Read on اقرأ المزيد of 2 °C by 2050. However, that goal might be beyond reach without urgent mitigation efforts, according to the <em>IPCC</em>’s Intergovernmental Panel on Climate Change (IPCC)The IPCC was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Program (UNEP) to…Read on اقرأ المزيد  Sixth Assessment Report (AR6).

Potential impacts of sea level rise on the MENA Region

The MENA region is one of the most vulnerable regions to sea level rise. By the end of the century, approximately 24% of the region’s GDP and 18% of its coastal land will be at risk of sea level rise and storm surges. In addition, 2 million people will be displaced in the case of a 0.5m rise, and certain populous cities like Alexandria and Basra will be subjected to chronic coastal flooding within the same timeframe. Sea level rise could also exacerbate damages and losses from other climate impacts in the region such as food insecurity and water scarcity.

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