The assessment, conducted in 2017 and 2018, “closes” the sea-level budget to within 0.3 millimeters of sea-level rise per year since 1993. In a 2017 report of sea level rise scenarios, experts at the agency predicted that even if our emissions stayed low, global sea levels would very likely rise at least 0.3 meters (12 inches) within a century. In terms of sea level rise damage, the most at-risk large cities in the U.S. include New Orleans, Boston, New York and Miami, according to a 2018 paper cited in the special report. As for future sea level rise, these predictions are based on physics, not statistics. Debunking common myths about climate change 07:07. Chart 4 shows that since the last ice age, sea level has risen over 400 feet. If emissions grew, on the other hand, the waters could rise by as much as 2.5 metres (8.2 feet) by 2100. Looking at global data (rather than tide gauge records just from the U.S.) show that sea level rise has been increasing since 1880. ... because it can mean the difference between an inhabitable and uninhabitable homeland due to sea-level rise… The recent rate of sea level rise is greater than its average value since 1930. According to LDEO polar experts Marco Tedesco and Robin Bell, since 2000 the consensus that global warming is the cause of sea level has grown stronger and stronger in the scientific community.“The consensus about global warming being responsible for sea level rise comes from the knowledge of the physical processes,” wrote the LDEO scientists in response to emailed questions. That was the beginning of the satellite record, when altimetry measurements began tracking sea level changes from space. While experts agree that sea level rise will increase over the course of the 21st century, it's not too late to slow things down. https://thenewamerican.com/un-ipcc-scientist-blows-whistle-on-un-climate-lies The total rise in sea level is completely consistent with the additions from land ice and ocean expansion, all of which are precisely measured all over the Earth and to the bottom of the oceans. In addition, global warming is already having palpable effects such as sea level rise, acidification of the oceans, increasing the likelihood of natural disasters such as hurricanes, fires and floods, among others. However, the melting of land-based ice, such as mountain glaciers and the big ice sheets of Greenland and Antarctica, does cause the sea level to rise. Sea ice is already floating on the ocean, so when it melts it doesn’t change sea level—just as ice cubes floating in a full glass of water don’t cause the water to overflow when they melt.