Since 1880 the ocean began to rise briskly, climbing a total of 210 mm (8.3 in) through 2009- about 7 inches a century. However, if you put that in a historical perspective; 19,000 to 6,000 years ago the sea level raise rate was roughly 529% to 2814% higher then today. Oceans during this time raised close to 120 metres (4,724 inches), this would be 56,915% percent larger then the 8.3 inch sea level raise since 1880. This all happened from 18,000 to 4,000 years before the birth of Jesus.
National Oceanography Centre
"Global sea level rose by a total of more than 120 metres as the vast ice sheets of the last Ice Age melted back. This melt-back lasted from about 19,000 to about 6,000 years ago, meaning that the average rate of sea-level rise was roughly 1 metre (37 inches) per century. Previous studies of sea-level change at individual locations have suggested that the gradual rise may have been marked by abrupt ‘jumps’ of sea-level rise at rates that approached 5 (197 inches) metres per century. Their analyses indicate that the gradual rise at an average rate of 1 metre per century was interrupted by two periods with rates of rise up to 2.5 metres (98 inches) per century, between 15 and 13 thousand years ago, and between 11 and 9 thousand years ago."
However, this is not the whole story. Recent data pulled from the NASA website suggests that the sea level fluctuated very little since September 16, 2015. In other words, no observable data in the last 2 years can show a discernible sea level rise at all.
Nor is the current shrinking of Greenland's Glaciers Unique. D Dahl-Jensen 2013 showed that Greenland's glaciers 122,000 years ago, during the Eemian, reached surface elevations 130 ± 300 metres lower than today. Is the Arctic Ocean's shrinking summer ice concentrations unique?
One of the arguments that exists why the Eemian is not a good analogy for what is happening right now is that the Arctic sea still had summer ice coverage as compared to current conditions. The argument also suggests that the current conditions are unique because the Arctic ocean was cooling during the late Eemian. Recent observations by Stein en al 2017 show that there is discrepancies in these widely held opinions. Their data showed that the Arctic Ocean may have been close to ice free from 116,000 to 120,000 years ago.
"There, planktic δ18O records from cores MD95-2010 and MD99-2304 (for core locations see Fig. 7e) document a climatic optimum in the early-middle part of the LIG between about 126 and 116 ka, related to a strong poleward extension of warm Atlantic Water. These conditions are quite similar to those also described for the Early Holocene at cores MSM5/5-712-2 and NP05-11-70GC (Fig; see Fig. 7e for core locations), i.e., very low PIP25 values of 0.2 and less, interpreted as almost ice-free conditions triggered by increased Atlantic Water inflow."
Also, during the Eemian, "the mean air temperatures in Northeast Siberia that were about 9 °C higher than today air temperatures above the Greenland NEEM ice core site of about 8 ± 4 °C above the mean of the past millennium North Atlantic sea-surface temperatures of about 2 °C higher than the modern (PI) temperatures and a global sea level 5–9 m above the present sea level (Stein en al 2017)". Further more an addition paper from Stein el al 2017 shows that there was a significant increase in ice in the Chukchi Sea and the East Siberian Sea the last 4,500 years as compared to the early Holocene. These new findings are excellent science work and engaging to the reader. The reader will be left with many mysteries and the papers themselves only open doors to more questions and provide a direction for research to head in.
We would also like to state we are not suggesting that Carbon Dioxide levels are not rising or ocean and surface temperatures have trended up lately. It is widely held in the science community that Carbon Dioxide levels are rising and there has been observable temperature increases globally on the surface and in the ocean. We are only suggesting that Climate Sensitivity be dialed down and let these people continue to do their research on the Eemian, Penultimate, and other earlier interglacial undisturbed by global warming hysteria...
Everybody is talking about the oceans rising and the ending of the world. But what would happen if the glaciers blanketed Canada and Eurasia. In a world looking for more certainty this recent research only leads to more questions.
Please also see our article; Glaciers or Rising Oceans; Damned if you do, damned if don’t, And maybe both