sea levels are invetiable says IPPC

Climate change at all scenerios says the IPPC latest report means that sea level rises are inevitable for at least the next 2000 years. The amount of sea level rises depends on which scenario, but even at the lowest level of 1.5 (SSP1-1.9) says 0.5m. Under the severe SSP5-8.5 is 0.63 to 1m by 2100. But by 2150 is 1 to 2m. That is using a conservative model. If the ice-sheet loss is accelerated then more like 2m to 5m.

It is virtually certain that global mean sea level will continue to rise over the 21st century. Relative to 1995–2014, the likely global mean sea level rise by 2100 is 0.28–0.55 m under the very low GHG emissions scenario (SSP1-1.9); 0.32–0.62 m under the low GHG emissions scenario (SSP1-2.6); 0.44–0.76 m under the intermediate GHG emissions scenario (SSP2-4.5); and 0.63–1.01 m under the very high GHG emissions scenario (SSP5-8.5); and by 2150 is 0.37–0.86 m under the very low scenario (SSP1-1.9); 0.46–0.99 m under the low scenario (SSP1-2.6); 0.66–1.33 m under the intermediate scenario (SSP2-4.5); and 0.98–1.88 m under the very high scenario (SSP5-8.5) (medium confidence).35 Global mean sea level rise above the likely range – approaching 2 m by 2100 and 5 m by 2150 under a very high GHG emissions scenario (SSP5-8.5) (low confidence) – cannot be ruled out due to deep uncertainty in ice-sheet processes.

IPPC Climate Change 2022 v6 Summary Report
Sea level rises are inevitable and the only question is how much and by when
Figure SPM.8 if Report. Selected indicators of global climate change under the five illustrative scenarios used in this Report The projections for each of the five scenarios are shown in colour. Shades represent uncertainty ranges – more detail is provided for each panel below. The black curves represent the historical observations.

How To Avoid Sea Level Rises?

Get carbon emissions down to net Zero. Will only take 2% of GDP. Taking action by changing from fossil fuel to green energy will add $5,000 to all of the 10 million Australian households.

How Will it affect Australia

Shorelines will extend inland by up to 200m or more.

From IPPC https://www.ipcc.ch/report/ar6/wg1/downloads/factsheets/IPCC_AR6_WGI_Regional_Fact_Sheet_Australasia.pdf

Uncertainty of Prediction

The authors say that there is a “low likelihood, high impact” and that is due to imprecise knowledge of icesheets.

sea level rises are inevitable and will extend out for hundreds of years. Too late to stop.
Figure SPM8 (e). We do not want the high risk one.

IPPC Sea level Prediction for Generations to come

Today, the sea level has risen by 20cm and will increase by 30cm to 1m or more by 2100 depending on future emissions. Sea level reacts very slowly to global warming, so once started, continues to rise for thousands of years.

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