trenbreth
A new study came out in Nature a couple of weeks ago that assesses multiple records of ocean temperatures over the last couple of decades and finds that there is "a statistically significant linear warming trend for 1993-2008 of 0.64âWâm-2".
The challenge the paper took on was one of assessing the uncertainties and inconsistencies in the various records. The paper is Lyman, J.L., et al. 2010. Robust warming of the global upper ocean. Nature 465 and Real Climate had an article about it here.
Also in that issue of Nature is an article by Kevin Trenbreth [PDF] that discusses that paper and…