Global Sea Level

Singapore has predicted its coastal waters could rise by more than a metre by the end of the century, piling pressure on its flood defences and threatening its low-lying land

Rising sea temperatures due to climate change are causing tropical marine species to move from the equator towards the poles, according to a study. The research, published in the journal Trends in Ecology and Evolution, also shows that temperate species are receding as it gets too warm, they face increased competition for habitat, and new predators arrive on the scene. This mass movement of marine life, termed tropicalisation, is changing the ecological landscape of our oceans and leading to a cascade of consequences for ecosystems, biodiversity, and potentially the global economy, the researchers said. The publication of the study coincides with the start of COP28 in Dubai, where global policymakers congregate and make pledges to tackle the impact of global warming. In recent years, climate change has altered the physical factors that affect species dispersal, such as ocean currents in areas that separate tropical/subtropical and temperate regions, the researchers said. These ...

The study says sea levels rose by 4.5 mm a year between 2013 and 2022, over three times the rate between 1901 and 1971

Global mean sea level rose by 4.5 mm per year during the period 2013-22 and human influence was very likely the main driver of these increases since at least 1971, the World Meteorological Department (WMO) said on Tuesday. Sea level rise threatens several low-lying small islands. It is a major threat for countries such as India, China, Netherlands and Bangladesh, some of which comprise large coastal populations. Several big cities on all continents are threatened such as Mumbai, Shanghai, Dhaka, Bangkok, Jakarta, Maputo, Lagos, Cairo, London, Copenhagen, New York, Los Angeles, Buenos Aires and Santiago. It is a major economic, social and humanitarian challenge, the WMO said in a report. Global mean sea level increased by 0.20 m between 1901 and 2018. The average rate of sea level rise was 1.3 mm per year between 1901 and 1971, 1.9 mm per year between 1971 and 2006, and 3.7 mm per year between 2006 and 2018, it said. Sea-level has risen faster since 1900 than over any preceding cent

Greenhouse gas concentrations, sea level rise, ocean heat and ocean acidification set new records in 2021 with extreme weather led to hundreds of billions of dollars in losses, a new report said

Coastal flooding will increase significantly over the next 30 years because of sea level rise, according to the report by an inter-agency sea level rise task force that includes NASA

Researchers have found that global warming is driving an unprecedented rise in sea temperatures, including in the Mediterranean sea.

Greenland and Antarctica's ice sheets could together contribute more than 38 centimetres to global sea level rise by 2100, if greenhouse gas emissions continue, according to a study led by NASA

The mission will be set up under National Action Plan for Climate Change and will include measures on climate change-related adaptation and mitigation while simultaneously advancing development

The study, published in the journal Scientific Reports, found that aerosols from biomass burning, such as black carbon, can be transported by wind to tropical Andean glaciers

The vast ice sheets of Greenland and Antarctica contain enough frozen water to lift the world's oceans dozens of metres