Models of future sea level rise generally hover around a meter (3 feet) or so within the next 100 years, but how much ice will melt, the temperature of the oceans, oceanic currents, tidal range ...

Since we know that at sea level the standard conditions are 29.92 inHg/1013.4 millibar and 59 degrees Fahrenheit/15 C, we can use the following formula to calculate pressure altitude: ...