The Permanent Service for Mean Sea Level (PSMSL) is perhaps the best source for sea level data.
Established in 1933, the Permanent Service for Mean Sea Level (PSMSL) has been responsible for the collection, publication, analysis and interpretation of sea level data from the global network of tide gauges. It is based in Liverpool at the National Oceanography Centre (NOC), which is a component of the UK Natural Environment Research Council (NERC).
I recently downloaded the data from their 2014 sea level reconstruction:
Jevrejeva et al, 2014, Global Mean Sea Level Reconstruction
This page provides a short description and file with data of global sea level reconstruction for the period 1807-2010 by Jevrejeva, S., J. C. Moore, A. Grinsted, A. P. Matthews and G. Spada. All questions about the data themselves should be addressed to Dr. Svetlana Jevrejeva.
Authors have used 1277 tide gauge records of relative sea level (RSL) monthly mean time series from the Permanent Service for Mean Sea Level (PSMSL) database [Holgate et al, 2013]. Detailed descriptions of the RSL time series are available from the data page at the PSMSL. No inverted barometer correction was applied. RSL data sets were corrected for local datum changes and glacial isostatic adjustment (GIA) of the solid Earth [Peltier, 2004].
More information about data and methods for the calculations of global sea level and errors can be found in:
Jevrejeva, S., J.C. Moore, A. Grinsted, A.P. Matthews, G. Spada. 2014. Trends and acceleration in global and regional sea levels since 1807, Global and Planetary Change, vol 113, doi:10.1016/j.gloplacha.2013.12.004
The data file can be downloaded by clicking here.
Description of the file:
The file has five columns:
- time (year, month)
- rate of sea level rise (mm)
- error of the rate (mm)
- global sea level (mm)
- error of global sea level (mm)
The data are sampled monthly; so I smoothed them with a 13-month running average to approximate annual variability. I also added a picture of a 12″ (30 cm) wooden ruler for scale.
The key features of Jevrejeva et al, 2014 (J14) are a falling sea level near the end of Holocene neoglaciation phase and then a steady, secular rise of about 1.9 mm/yr since 1860 as the Earth warmed up from the Little Ice Age.
The steady rise from the Little Ice Age is punctuated by a multi-decadal quasi-periodic fluctuation (a cycle to a geologist)…
If someone only looked at the data from the early 1990’s onward, they might be tempted to declare an acceleration in sea level rise.
J14 is definitely an improvement relative to J08; which failed to capture the falling sea level of the neoglaciation phase.
Fun With Sea Level
No post of mine would be complete without sarcastic and/or sophomoric humor… So here it is: