In their new book, Merchants of Doubt, historians Naomi Oreskes and Erik Conway explain how a loose–knit group of high-level scientists, with extensive political connections, ran effective campaigns to mislead the public and deny well-established scientific knowledge over four decades. In seven compelling chapters addressing tobacco, acid rain, the ozone hole, global warming, and DDT, Oreskes and Conway roll back the rug on this dark corner of the American scientific community, showing how the ideology of free market fundamentalism, aided by a too-compliant media, has skewed public understanding of some of the most pressing issues of our era.
How does the Medieval Warm Period compare to current global temperatures? Link to this page What the science says... Select a level... Basic Intermediate While the Medieval Warm Period saw unusually warm temperatures in some regions, globally the planet was cooler than current conditions. Climate Myth... Medieval Warm Period was warmer The Medieval Warm Period was warmer than current conditions. This means recent warming is not unusual and hence must be natural, not man-made. One of the most often cited arguments of those skeptical of global warming is that theMedieval Warm Period (800-1400 AD) was as warm as or warmer than today. Using this as proof to say that we cannot be causing current warming is a faulty notion based upon rhetoric rather than science. So what are the holes in this line of thinking? Firstly, evidence suggests that the Medieval Warm Period may have been warmer than today in many parts of the globe such as in the North Atlantic. This warming thereby allowed Vikings to travel further north than had been previously possible because of reductions in sea ice and land ice in the Arctic. However, evidence also suggests that some places were very much cooler than today including the tropical pacific. All in all, when the warm places are averaged out with the cool places, it becomes clear that the overall warmth was likely similar to early to mid 20th century warming. Since that early century warming, temperatures have risen well-beyond those achieved during the Medieval Warm Period across most of the globe. The National Academy of Sciences Report on Climate Reconstructions in 2006 found it plausible that current temperatures are hotter than during the Medieval Warm Period. Further evidence obtained since 2006 suggests that even in the Northern Hemisphere where the Medieval Warm Period was the most visible, temperatures are now beyond those experienced during Medieval times (Figure 1). This was also confirmed by a major paper from 78 scientists representing 60 scientific institutions around the world in 2013. Secondly, the Medieval Warm Period has known causes which explain both the scale of the warmth and the pattern. It has now become clear to scientists that the Medieval Warm Period occurred during a time which had higher than average solar radiation and less volcanic activity (both resulting in warming). New evidence is also suggesting that changes in ocean circulation patterns played a very important role in bringing warmer seawater into the North Atlantic. This explains much of the extraordinary warmth in that region. These causes of warming contrast significantly with today's warming, which we know cannot be caused by the same mechanisms. Overall, our conclusions are: a) Globally temperatures are warmer than they have been during the last 2,000 years, and b) the causes of Medieval warming are not the same as those causing late 20th century warming. Figure 1: Northern Hemisphere Temperature Reconstruction by Moberg et al. (2005) shown in blue, Instrumental Temperatures from NASA shown in Red.
http://www.climatedepot.com/2014/09...ent-cool-phase-will-continue-until-the-2030s/ Climatologist Dr. Judith Curry warns of decades of possible global cooling: Suggests the ‘current cool phase will continue until the 2030s’ Curry, the climate 'heretic' who converted from warmist to challenging the 'consensus' speaks at National Press Club in DC: 'The main problem is we are putting the policy cart before the scientific horse' Curry on Eve of NYC UN Summit: 'Relying on global international treaty to solve the problem -- which I do not think would really solve the problem even if it was implemented -- is politically unviable and economically unviable.' Curry on CO2 control knob: 'Even on the timescale of decade or two, we could end up be very surprised on how the climate plays out and it might not be getting warmer like the UN IPCC says. We don’t know what's going to happen. All other things being equal – yes -- more carbon dioxide means warmer, but all other things are never equal. We just don’t know. I think we are fooling ourselves to think that CO2 control knob really influences climate on these decadal or even century time scales.' Curry on intimidation: 'If I were nontenured scientist, I would fear for my job! But I am a senior scientist with retirement in my sight, so I can afford to do what I want, say what I think.'
of course you don't care fraudcurrents. You don't care about where the science is going. People interested in real science from scientists with integrity... care . I posted it even though she says co2 does mean warmer because I respect her opinion because she has been open minded about the science.
But yes, the sequestering of heat into the oceans may continue or increase, but eventually it will come back with possibly devastating rapidity and magnitude.