Dear Carol,
Good to hear from you.
This is supposed to be a very accurate way of measuring changes in sea level. If my memory serves me correctly, they said they have detected a rise in sea level since they started measuring using this method. Has anyone else heard anything about this?
Here is a little reading material which relies on a very low tech method of measuring the level of the ocean.
Falling sea level rock, Part one
Falling sea level rock, Part two
Still some more stuff
There are also reports on volcanic activity under the ice cap and many other natural phenomenon that are causing "symptoms".
I also have read that satellite data has been embarassingly unsupportive of the global warming theory.
I'll see if I have any information on that.
Talk to you later,
mav out
PS. By the way, when they start getting accurate weather forcasts 5 days out, maybe I'll start paying attention to their 50 year predictions.