Professor Nils-Axel Morner from Stockholm has published an excellent paper on the SPPI (Science and Public Policy Institute US)web site on sea level. Professor Morner was the chair of the sea level commission.
Sea level is measured by both tide gauges and since 1992 by satellite altimetry. One of the keepers of the satellite record told Professor Morner that the record had been interfered with to show sea level rising, because the raw data from the satellites showed no increase in global sea level at all!
The raw data from the TOPEX/POSEIDON sea-level satellites, which operated from 1993-2000, showed a slight uptrend in sea level. However, after exclusion of the distorting effects of the great El Nino Southern Oscillation of 1997/1998, a naturally-occurring event,the sea level trend is zero!
The GRACE gravitational -anomaly satellites are able to measure ocean mass, from which sea level change can be directly calculated. The GRACE data show that sea level fell slightly from 2002-2007.
These two distinct satellite systems,using very different measurement methods, produced raw data reaching identical conclusions: sea level is barely rising,if at all. Sea level is not rising at all in the Maldives, the Laccadives, Tuvalu, India, Bangladesh, French Guyana, Venice, Cuxhaven, Korser, Saint Paul Island, Qatar.
In theMaldives a group of Australian environmental scientists uprooted a 50 year old tree by the shoreline, aiming to conceal the fact that its location indicated that sea leve l had not been rising. this is further indication of political tampering with scientific evidence about sea level. Since sea level is not rising the chief ground of concern at the potential effects of antropogenic global warming, that millions of shore dwellers the world over may be displaced as the oceans expand is baseless. As Professor Morner says we are facing a very grave unethical "sea-level gate".
(Published on 6 december 2012 on the SPPI web site)