Retired German meteorologist Klaus-Eckart Puls has written an analysis at the European Institute for Climate and Energy (EIKE) website here. He concludes:
Old and new measurement data show that sea level rise has decelerated.”
The article is a bit long and so I’ll focus on the main results only.
North Sea rise stagnates
First he discusses a 2013 study by T. Wahl, et al.: “Observed mean sea level changes around the North Sea coastline from 1800 to present”; Earth-Science Reviews; Volume 124, September 2013, Pages 51, which examined 30 North Sea tide gauges, of which some of them go back up to 200 years and most of them 100 years. The results:
Source: T. Wahl, et al.
The Wahl paper writes:
In summary the long term trends in the North Sea are not significantly different from global sea level trends, while the inter-annual and decadal variability are much bigger in the North Sea and hardly comparable to those derived from the global sea level reconstruction considered here.
The recent rates of sea level rise (i.e. over the last two to three decades) are high compared to the long-term average, but are comparable to those which have been observed at other times in the late 19th and 20th century.”
Puls concludes: “There are variations, but no acceleration on a 100-year scale!!!”
Sea level rise at the German bight
Puls then examines data from the German bight. The results are depicted by the following graphic:
Evaluation of coastal tide gauges at the German bight: “No acceleration!” Data: Albrecht, F., T. Wahl, J. Jensen and R.Weisse (2011).
Puls’s conclusion: “The data going back in part over the last 160 years show no acceleration in sea level rise. Rather there is a slight weakening as the polynomial indicates.”
Global sea level rise slowing down
Although variations at the North Sea are greater than those of global sea level, Puls writes that the overall trend is practically the same. He provides a graphic of the data taken by satellite:
Evaluation of satellite altimetry – data source: http://sealevel.colorado.edu/
Puls writes: “Even over the two most recent decades no acceleration can be detected, rather there is a weakening.”
Meteorolgist Puls then summarizes the results of the GRACE data for the last 9 nine years: “Only 1,7 mm per year.”
The EIKE article then looks at the “grotesque” discrepancy between satellite data and tide gauge data, and that to this day there is still no reasonable explanation for it. One thing is sure: the collection of tide gauges doesn’t lie.
The constant stream of alarm reports of supposedly dramatic sea level rise at present and in the future cannot be confirmed by observations. Rather, the data as a whole contradict it. Worldwide neither tide gauges nor satellite data indicate an acceleration in sea level rise. Rather they show a weakening. There is a glaring contradiction between earlier and current statements from a number of institutes, climate models and the IPCC. Moreover there are strong indications that the satellite data showing higher values were “over-corrected”.