Hmm. The real answer would involve digging data out of the CMIP3 archive... the quick and dirty answer is that global average temperatures are expected to go up about 0.2 degrees per decade for the next decade or two (and at a faster pace after that) (that was the estimate from the IPCC AR4 report in the projections chapter, I believe): the ocean surface will warm slightly less than that, and the ocean depths will warm much less than that... of course, there is uncertainty around that global 0.2 degree rate. As well as regional variation.
Ocean surface acidity will increase (my guess would be about 0.04 pH points per decade, given that we've increase about 0.1 pH points in the past century and ocean uptake of carbon is much higher now than it was in the past), but I don't actually know all that much about acidification.
Salinity, I _really_ know very little about. In the Arctic, salinity will decrease due to melting sea ice and increased river flow from melting glaciers. In areas without land or sea ice contributing fresh water, increased evaporation might make things slightly saltier?
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timeasmymeasure
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Date: 2010-06-27 04:27 am (UTC)Ocean surface acidity will increase (my guess would be about 0.04 pH points per decade, given that we've increase about 0.1 pH points in the past century and ocean uptake of carbon is much higher now than it was in the past), but I don't actually know all that much about acidification.
Salinity, I _really_ know very little about. In the Arctic, salinity will decrease due to melting sea ice and increased river flow from melting glaciers. In areas without land or sea ice contributing fresh water, increased evaporation might make things slightly saltier?