Heat flows from below
This map needs a bit of thinking about. It does not particularly fit my model of heating being located over magnetic flux change hotspots. It may sink it yet.
But,a flow of 350 milliwatts per square metre, the maximum values here, is a fair bit of heat. That is one joule per second, and in geology we have a lot of seconds at our disposal. In geography, we are not that short of square metres in the ocean basins, either. The heat follows the plate boundaries, as one might expect.
The largest hot patch is not that far from where El Nino-La Nina operates, so the heat flow through the crust may be a significant part of the engine driving that,and may be the main engine, or forcing. if you prefer. If the heat flow itself, or its expression in the deep ocean currents pulses over time, a guess and reason or driver so far unkown, at least to this baffled penguin, then we may be staring down the barrel of one of the main drivers of decadal climate change. Surprise surprise. Not a skerrick of action near the Lena River, Siberia, ho hum.
But even less helpful to AGW, methinks.
Global heat flow map prepared from the database compiled by the International Heat Flow Commission (H. N. Pollack, S. J. Hurter, and J. R. Johnson, Reviews of Geophysics, Vol. 31, 1993.) (Courtesy Shaopeng Huang, member, IHFC.)
From:
http://images.google.com.au/imgres?imgurl=http://www.iaspei.org/brochure/HEAT.jpg&imgrefurl=http://www.iaspei.org/brochure/brochure.html&h=262&w=353&sz=45&hl=en&start=3&um=1&usg=__mDdHnnqyvkcJht1xHzGLX6vLOto=&tbnid=P2NzcmTsm9eyKM:&tbnh=90&tbnw=121&prev=/images%3Fq%3Dglobal%2Bgeothermal%2Bheat%2Bflows%2Bmap%26um%3D1%26hl%3Den%26sa%3DG%26as_qdr%3Dall