BackgroundMark Bofill raises an interesting question over at Lucia's:
SLR is evidence warming is occurring. It doesn’t put the A in AGW though, FWIW. It’s always seemed to me that sea level rise started a trifle early for CO2 increase to be the original cause.There being a number of SLR reconstructions floating about, I asked which one(s) he's been looking at. He proposed I we have a look at Jevrejeva et al. (2008), Recent global sea level acceleration started over 200 years ago?
Abstract: We present a reconstruction of global sea level (GSL) since 1700 calculated from tide gauge records and analyse the evolution of global sea level acceleration during the past 300 years. We provide observational evidence that sea level acceleration up to the present has been about 0.01 mm/yr 2 and appears to have started at the end of the 18th century. Sea level rose by 6 cm during the 19th century and 19 cm in the 20th century. Superimposed on the long-term acceleration are quasi-periodic fluctuations with a period of about 60 years. If the conditions that established the acceleration continue, then sea level will rise 34 cm over the 21st century. Long time constants in oceanic heat content and increased ice sheet melting imply that the latest Intergovernmental Panel on Climate Change (IPCC) estimates of sea level are probably too low.