Sea levels rising. Modestly. Sea level is increasing, just as it was before man started pumping large amounts of CO2 into the atmosphere. Time to panic? No.
This graph, from Joanne Nova’s website, is consistent with the latest United Nations climate report (IPCC AR5) which states that the rise in sea level from 1901-2000 was 1.7mm annually, a total of less than seven inches of sea level rise in 100 years.
Note that the sea levels started rising about 1860, whereas most man made CO2 release occurred after 1945.
More recently (since 1993), satellite-measured global sea level is increasing more rapidly (3.2mm/year), but there is no sign that the increase is accelerating, as has been claimed by some alarmists.
What conclusion can be drawn from this data? Since sea levels were rising before humans put a lot of CO2 into the atmosphere by burning gas and oil, it is reasonable to propose that at least half of the current sea level rise is natural.
Sea levels are rising gradually, and if the current trend continues — there’s no guarantee that it will — the ocean will be about 1 foot higher in 100 years. That is plenty of time to adapt to the change, and it would certainly be cheaper to move buildings on coastlines that might be at risk than to change from fossil fuels to more expensive “green” substitutes like wind and solar and biofuel.
So again, don’t panic. Look at the scientific data, and know that sea level is increasing tiny amounts (about 1/8th of an inch) each year.