Reference Mean Sea Level

This is our most recent (as of February 2011) update to our GMSL time
series.

The paper describing this update should be published in Surveys in
Geophysics in 2011.

See http://www.cmar.csiro.au/sealevel/sl_data_cmar.html for more information
as it becomes available.

Monthly and yearly time series are provided in text (.txt) format and also .csv
format, which should open up easily into spreadsheet programs such as Microsoft
Excel.

The reconstructed time series are zeroed at 1990. The satellite altimeter
time series match the reconstructed time series over 1993. This way of
matching the time series is a choice that we have made - there may be a more
appropriate way of doing this for your application.

Files are:

CSIRO_Recons_gmsl_mo_2011.txt & .csv Reconstruction, 1880 to 2009, monthly
CSIRO_Recons_gmsl_yr_2011.txt & .csv Reconstruction, 1880 to 2009, yearly
CSIRO_ALT_gmsl_mo_2011.txt & .csv Satellite altimeter data, 1993 to 2009, monthly
CSIRO_ALT_gmsl_yr_2011.txt & .csv Satellite altimeter data, 1993 to 2009, yearly

The 'Recons' files have three columns:

Column 1: time
Column 2: GMSL in millimetres
Column 3: one standard deviation uncertainty in millimetres.

The 'ALT' files have two columns:

Column 1: time
Column 2: GMSL in millimetres

We normally use ~5mm for the uncertainty for this data.

Time formats are:

Monthly files: 1880.0417 = Jan 1880
1880.1250 = Feb 1880
.
.
1880.9583 = Dec 1880
etc

Yearly files: 1880.5 = yearly average for calendar year 1880
1881.5 = yearly average for calendar year 1881
etc

Contact me at [e-mail] if you have any queries about this.

Neil White
CSIRO Marine and Atmospheric Research
3rd February, 2011