When they analyze all the data that exists, that's the opposite of cherry picking. [Geoffrey Landis]
Indeed. I made this same point after Jane/Lonny baselessly accused Layzej of "cherry-picking" when Layzej loaded all the UAH data. Jane/Lonny then suggested cherry-picking at 1998, and keeps insisting that this somehow isn't "cherry-picking".
Ironically, I even gave Jane/Lonny R code which calculates trends and accelerations of global mean sea level (GMSL) data. That graph accounts for autocorrelation- the red lines are 2 sigma uncertainties. The trends and accelerations are calculated over periods which all end at 2009.5. The new significance.zip (backup copies) contains my R statistics folder, including many data sets.
Again, note that this approach avoids cherry-picking by using the entire dataset. Also note that all the best-fit accelerations are positive.
Once again, that's consistent with this NOAA article:
"Sea level is rising at an increasing rate ... There is strong evidence that global sea level is now rising at an increased rate and will continue to rise during this century. While studies show that sea levels changed little from AD 0 until 1900, sea levels began to climb in the 20th century. The two major causes of global sea-level rise are thermal expansion caused by the warming of the oceans (since water expands as it warms) and the loss of land-based ice (such as glaciers and polar ice caps) due to increased melting. Records and research show that sea level has been steadily rising at a rate of 1 to 2.5 millimeters (0.04 to 0.1 inches) per year since 1900. This rate may be increasing. Since 1992, new methods of satellite altimetry (the measurement of elevation or altitude) indicate a rate of rise of 3 millimeters (0.12 inches) per year. This is a significantly larger rate than the sea-level rise averaged over the last several thousand years."
And once again, that's consistent with the 2013 IPCC AR5 SPM:
"Proxy and instrumental sea level data indicate a transition in the late 19th to the early 20th century from relatively low mean rates of rise over the previous two millennia to higher rates of rise (high confidence). It is likely that the rate of global mean sea level rise has continued to increase since the early 20th century."
That's also consistent with the US NAS's statement that "Sea level is rising faster in recent decades".