> Global mean sea level, or the average height of the ocean surface, has risen 6 - 8 inches (15 - 20 centimeters) since 1920. In the continental U.S., relative sea level has risen about 10 - 12 inches (25 - 30 centimeters) over the same period. Observational data from tide gauges and satellites also show that sea level rise, both globally and along the continental U.S., is accelerating, with more than a third of that rise having occurred in the past two and a half decades (see NOAA and NASA portals for altimeter-based global rates and NOAA for local tide gauge rates).
So, 30% of the normal one foot per century (somewhat less worldwide) happened in the last 25% of the time. That’s not a big acceleration, that’s measurement error.
And yet this report says the rate of rise will nearly triple over the next thirty years. This is simply not plausible.
Generally, the report reduced the predictions. Also, they eliminated the 2.5 meter (!) scenario.
So, 30% of the normal one foot per century (somewhat less worldwide) happened in the last 25% of the time. That’s not a big acceleration, that’s measurement error.
And yet this report says the rate of rise will nearly triple over the next thirty years. This is simply not plausible.
Generally, the report reduced the predictions. Also, they eliminated the 2.5 meter (!) scenario.