There are claims that since 1985 or 1990 there has been 3.4 millimeters per year of global sea-level rise. This is based up satellite altimetry. This is five inches of sea-level rise since 1985.

There are tidal gauges along all of North America and Europe.

I do not understand how the global satellite says the average rise is 3.4 millimeters per year but the vast majority of coastal gauges show 0 to 3.0 millimeters per year of rise. It looks like the average of all of the coastal sea-level rises from 1978 to today is more like 1.4-2.0 millimeters per year.

New York has a site which indicates that they have experienced 9 inches of sea-level rise since 1950. The NOAA indicates that New York and much of the east coast has had about 4.4 millimeters per year of sea-level rise since 1978. This would be 7 inches since 1978. The new york sea-level state site talks about a 3-inch rise since 1978. There was a 5-inch fluctuation between 1976 and 1983.

There are four causes of sea-level rise in New York, the slowing of the gulf stream and land sinkage are the largest contributors. Because the Gulf Stream has slowed down, it leaves more water on the East Coast. This, combined with sinking land, makes New York particularly vulnerable to an increased rate of sea-level rise in the future.

Canada and Alaska are seeing either very slow sea-level rise at less than half the rate of the US East coast or even declining sea-levels.

If there are big sea-level rise impacts then they will hit the US East Coast and the Gulf of Mexico first. California and West Coast effects would lag by 40-100 years.

Brian Wang is a prolific business-oriented writer of emerging and disruptive technologies. He is known for insightful articles that combine business and technical analysis that catches the attention of the general public and is also useful for those in the industries. He is the sole author and writer of nextbigfuture.com, the top online science blog. He is also involved in angel investing and raising funds for breakthrough technology startup companies.

He gave the recent keynote presentation at Monte Jade event with a talk entitled the Future for You.  He gave an annual update on molecular nanotechnology at Singularity University on nanotechnology, gave a TEDX talk on energy, and advises USC ASTE 527 (advanced space projects program). He has been interviewed for radio, professional organizations. podcasts and corporate events. He was recently interviewed by the radio program Steel on Steel on satellites and high altitude balloons that will track all movement in many parts of the USA.

He fundraises for various high impact technology companies and has worked in computer technology, insurance, healthcare and with corporate finance.

He has substantial familiarity with a broad range of breakthrough technologies like age reversal and antiaging, quantum computers, artificial intelligence, ocean tech,  agtech, nuclear fission, advanced nuclear fission, space propulsion, satellites, imaging, molecular nanotechnology, biotechnology, medicine, blockchain, crypto and many other areas.