The warming in the colder yrs does cause concern....I have focused a lot of my thinking on the Gulf Stream, perhaps too much for I have not looked at the Labrador Current much lately. As you say, perhaps a combination of both. Right now mitigating factors, in my opinion, is what is keeping us from having a climate that should be warmer than what it is... from what I understand given the amount of CO2 etc in the atmosphere which is a very broad, simplified statement. To know that eventually the ocean, which is our BIg Friend right now, will get tol a point where it will no longer mitigate to the extent it is......gives me scary scenarios. So much data, observation, theory and the kitchen sink to look at with the interaction of the land/ocean. We live in a very fasinating time but one in which we may be on the cusp of something that people are not going to want in the long run.....Thanks Weatherguy701. I'm the last person who wants climate change.