De, Thanks also for the MIT article. I started out doing some searching for a simple article estimating how many kcals were stored in all the world's fossil fuels and how many and been recently released. I didn't find anything good to cite, so I just made my bold statement, thinking it was self evident.
Obviously, it wasn't self evident. I'm not sure where I missed the mark. Perhaps I should have just said that ANY man-made release of heat into the environment was, technically, "man-made global warming"? Even if the release causes no discernible change in world temperature, or even if some other mechanism counterbalances it, it still constitutes "man-made global warming".