Report shows: Sea level is rising fast
A new study is showing that, in recent years, the sea level has been risen. Not just slowly but faster.
That is told by a team of researchers.
They have scrutinized the measurements and sentinel satellites date once again.
Until now there seemed to be a contradictory: More melt water didn’t lead to as many seawater.
But the increase is faster than measured in the entire last century: Nowadays, the sea level is about 6 centimeters higher, as it was in 1994 and about 20 centimeters above the level of 1880.
Watson: “Corrected GMSL data set indicates an acceleration in sea-level rise, which is of opposite sign to previous estimates and comparable to the accelerated loss of ice from Greenland and to recent projections, and larger than the twentieth-century acceleration.”
The new study ends the speculations that the rising sea levels weakened after the ’90 by an average of 3.2 millimeters per year to 2.4 millimeters in the period 2004 – 2011. The delay has sometimes been linked to an alleged delay in the global warming after 2000.
Periodic climatic effects
The hitch of global warming has been proved wrong, but experts continued to disagree about the motions of the sea. Last year a German team said, the slower rise in sea levels were based on periodic climatic effects like El Nino. Climate skeptics shouted that this was an attempt to cover up reassuring news about the climate.
Moving coastal areas
Watson argues that the slowdown in the rise in sea level, does not really exist. It should be due to systematic errors in earlier data.
An important factor is the rise and fall of coastal areas, including the stations. This has now been corrected. Between 1993 and 2014, the sea level seemed to have risen less than 2.6 millimeters per year after corrections. However, after the same adjustments, since 2004 the sea level have been accelerating with a few tenths of a millimeter every year.
Greenhouse gas emissions
Recent progress in climate science allows for a clear attribution of the human contribution to changes in many components of the climate system.
- It is extremely likely that most of the observed rise in global surface temperature since the mid-20th century was caused by increases in greenhouse gas emissions and other anthropogenic activities.
- It is also very likely that human influence has substantially contributed to increases in upper ocean temperatures, Arctic sea-ice loss, global mean sea-level rise and changes in the frequency and intensity of temperature extremes, such as heat waves, since the mid-20th century.
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