Having a look at the temperatures, there has been not too much of a warming since the beginning of this century, and having a better look at the actual trends, temperatures have certainly increased 1970 to 2000, but they have also been increasing 1910 to 1940 with same rate, and have been flat 1940 to 1970 as they are flat since 2000. Therefore, global warming seems to have started in 1910 and not in 1950, with superimposed the multi-decadal oscillations very well knows since they are mentioned already in the ancient Sanskrit script that are often badly misinterpreted as misinterpreted are the sea level oscillations.