Sea Levels In The Holocene


By Paul Homewood


Perhaps the alarmist scare which gains most traction is that of catastrophic sea level rise. The idea that at some undefined point in the future our coastal cities will be under several meters of water.

It is, however, one that is easy to dismiss. Quite simply, we know that global climate has been much warmer than now for most of the years since the ice age ended. There was obviously a very rapid and large rise in sea levels when the ice age ended, but it is generally accepted that things stabilised around 6000 years ago. During that time, despite higher temperatures, there has been no catastrophic melt of the Greenland or Antarctic ice sheets, and no corresponding large jump in sea levels of the type currently touted.

Before we move on, let’s get one thing clear. It is often claimed that there has been very…

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How pacific islands don’t suffer from sea-level rise

How pacific islands don’t suffer from sea-level rise

The overall rates of movement are updated every month by calculating the linear slope during the tidal analysis of all the data available at individual stations. The rates are relative to the SEAFRAME sensor benchmark, whose movement relative to inland benchmarks is monitored by Geosciences Australia.
Please exercise caution in interpreting the overall rates of movement of sea level – the records are too short to be inferring long-term trends.

A longer record will bring more insight, but even then sea level trends are a very weak signal inside a noisy dataset. Even with state-of-the-art equipment, it is a fool’s errand to discern any acceleration in sea levels, in order to link it to CO2. Such changes are in fractions of millimeters when the measurement error is +/- 1 mm.

Sea Level Data

The Sea Level Scam

The Sea Level Scam

Since the end of the last glacial epoch, global sea level has risen 120 meters (393 feet), about one meter per century. Most of that was the result of melting of continental ice sheets between 18,000 and 8,000 years ago. The rate of sea level rise has leveled off to about 1- to 3 millimeters per year, about the thickness of two pennies.