The Forum > Article Comments > Probing the reasons behind the changing pace of warming > Comments
Probing the reasons behind the changing pace of warming : Comments
By Fred Pearce, published 16/4/2013Current climate models aren't sophisticated enough to explain why global warming has paused.
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Posted by Jon J, Tuesday, 16 April 2013 8:23:13 AM
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So now we've finally got to the point where the scientists now also generally agree that global warming has paused (or the rate of warming has been subdued or whatever). I've seen various theories explaining this pause - aerosols due to pollution is one, warming of the oceans is another, and I'm not going to challenge any of it.
The only point we need to consider is that various forecasts were made from the theory and those forecasts now don't look right, and theories should be judged by their forecasts, not by how many scientists endorse the theories. Therefore all the other forecasts about extreme temperatures, species extinctions, rising seas and so on should be put on hold until this is sorted out. Until scientists start producing usable forecasts that we know we can rely on, the only sensible policy to adopt is adaptation. If and when climate change does start occurring then we should adapt to it. Posted by Curmudgeon, Tuesday, 16 April 2013 10:56:55 AM
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It's modern day Alchemy
Posted by Aspley, Tuesday, 16 April 2013 11:11:14 AM
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The north pole ice cap still seems to be retreating.
David Posted by VK3AUU, Tuesday, 16 April 2013 11:59:20 AM
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The North Polar sea ice coverage is slightly below where it was this time last year, and about 5% below its long-term average. The South Polar ice, however, is about 8% above its long-term average, and continues to set new records: so whatever your comment is supposed to show, it can't be GLOBAL warming. Northern Hemisphere warming, perhaps.
http://nsidc.org/data/seaice_index/images/daily_images/N_timeseries.png http://nsidc.org/data/seaice_index/images/daily_images/S_timeseries.png Posted by Jon J, Tuesday, 16 April 2013 12:55:29 PM
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Ok, let's look at this junk.
1 Last 14 years include 12 of the hottest. McShane and Wyner have dealt with this Mann's Hockeystick in their formative analysis of modern temperature cf the past: http://wattsupwiththat.com/2010/12/13/mcshane-wyner-hockey-stick-smackdown-redux/ M&W concluded that based on the same proxy evidence used by Mann that the current period was not the warmest in the last 1000 years. However the sheer misrepresentation of this claim about 12 of the last 14 being the hottest is shown by this graph: http://www.woodfortrees.org/plot/rss/from:1980/to:1990/trend/plot/rss/from:1990/to:2000/trend/plot/rss/from:2000/to:2010/trend What we see is a cooling 1980's, a warming 1990's and a cooling 2000's. The reason why the cooling years of the 2000s are still warmer then the warming 1990s is simply because the plateau reached by the warming of the 1990s means that even cooling years are still warmer then the years which preceded them. It is statistical sleight of hand, nothing more. 2 Trenberth’s new paper finding his long lost ocean warming. This is particularly egregious because all Trenberth has done is reanalyse the same data as before which led him to conclude privately but revealed in the emails that it was a travesty that they could not find the missing heat. How convenient and how preposterous. Judith Curry, ever diplomatic says this about Trenberth’s paper: "The surprising finding is the apparent sequestration of heat in the global ocean starting circa 2000, which has been accompanied by a flattening of the trend of upper ocean temperatures since 2003. Is this real, or an artifact of the reanalysis process?" How can it be that heat is going down to 2000 meters, as Trenberth claims, when ocean heating to 700 meters is falling and sea surface temperature is declining rapidly: http://www.woodfortrees.org/plot/hadsst2gl/from:2003/trend Does the heat magically miss the top of the ocean and only reveal itself at the lower depths? If it does it contradicts all known physical processes. This is voodoo science. Trenberth’s heat is missing because it is leaving the Earth’s atmosphere. There has been a Top of Atmosphere negative imbalance since 2003: http://www.sciencedirect.com/science/article/pii/S037596011201119X The missing heat isn’t in the ocean, it’s left the planet. Posted by cohenite, Tuesday, 16 April 2013 3:23:41 PM
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Jon J,
Some additional info on the acceleration of the summer melt in Antarctica. http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1787.html Posted by Poirot, Tuesday, 16 April 2013 5:07:09 PM
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Poirot, the Antarctic peninsula is about 4% of the Antarctic total and has always been warmer than the rest; try this paper:
http://www.nature.com/nature/journal/v489/n7414/full/nature11391.html Which concludes: "Repeating the temperature trend analysis using 50-year windows confirms the finding that the rapidity of recent Antarctic Peninsula warming is unusual but not unprecedented ... natural millennial-scale climate variability has resulted in warming on the eastern Antarctic Peninsula that has been ongoing for a number of centuries and had left ice shelves in this area vulnerable to collapse." In short what is happening now in the warmest part of the Antarctic is not historically exceptional. Posted by cohenite, Tuesday, 16 April 2013 5:19:43 PM
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Cohenite is there any info about why the Antarctic Peninsula is warming?
And here's a question. We have seen that European glaciers have been in retreat recently but I haven't seen anything on that for several years. With cooler winters and increased snowfall in the past few years, have there been changes in rates of decline? Posted by Graeme M, Wednesday, 17 April 2013 7:06:40 AM
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Hi Graham; a lot of reasons are offered as to why the WAP is warming while the rest of the Antarctic is not, or at least not warming at the rate the WAP is.
One reason is that there is more temperature data in the WAP; another has to do with warmer currents impacting the WAP but I would suggest looking at the underlying geology of the Antarctic: http://en.wikipedia.org/wiki/File:AntarcticaRockSurface.jpg All of these disparate rock areas are joined by ice cover but still have greatly varying water currents affecting them. Then there are the volcanoes: http://wattsupwiththat.files.wordpress.com/2008/01/antarcticvolcanoes2.jpg All of them active. Now compare the Antarctic temperature map with the volcanoes and geology: http://nsidc.org/data/thermap/antarctic_10m_temps/dixon_map.html Posted by cohenite, Wednesday, 17 April 2013 10:18:24 AM
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Late stage democracies, the greatest analyst of democracy at the birth of modern democracy, Alexis De Tocqueville [1833]:
"Now it is in the nature of all government to wish to enlarge its sphere continuously. It is therefore very difficult for it not to succeed in the long term, since it acts with a fixed thought and a continuous will on men whose position, ideas, and desires vary every day. Often it happens that citizens work for [the central power] without wanting to. Democratic centuries are times of attempts, innovations, and adventures. There is always a multitude of men engaged in a difficult or new undertaking….They do indeed accept for a general principle that the public power ought not to intervene in private affairs, but each of them desires that it aid him as an exception in the special affair that preoccupies him, and he seeks to attract the attention of the government to his side, all the while wanting to shrink it for everyone else. Since a multitude of people have this particular view of a host of different objects all at once, the sphere of the central power spreads insensibly on all sides even though each of them wishes to restrict it. A democratic government therefore increases its prerogatives by the sole fact that it endures….One can say that it becomes all the more centralized as the democratic society gets older." Intangible, unmeasurably complex, emitted in every energetic activity in industrial society, pantheistically soft for a soft people, grasped as a boon by brain-dead elite as something universaliseable (something plausibly able to unite those you wish to rule over) but undemanding enough for elite functionaries themselves to subscribe to. Global warming! There has never been anything like the neoplasmically parasitic meritocratic elite we have today. Just abysmal. You know the geographic centre of global liberalism, N.E. USA, something like as deranged as Saudi Arabia the geographic centre of that other voluntarism - Islam, forces girls changerooms to accomodate anyone who identifies as female for the day. Google it. Posted by Martin Ibn Warriq, Thursday, 18 April 2013 4:07:50 PM
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Very interesting Martin. AGW seems to me to be a perfect example of Foucault's view of humanity as plastic beings whose identity and values are entirely determined by their society.
For Foucault this is different from the nature versus nurture debate since this is a universal characteristic always prevailing over individuality. I disagree and think belief in AGW unifies a certain type of human. A type who is not independent of their society but who thrives only in the Western societies where there exists massive subsidisation of nominal and expedient non-conformity. AGW is a classic case of expedient non-conformity where people who only exist in their society actively espouse superficially moral issues which undermine that society. AGW does this by threatening the economic, technological, political and existential basis of Western society. The primary irony of this cognitive dissonance is that these believers in AGW would be the first to suffer and perish if Western society collapsed. Is this the lemming gene manifested in humanity? Posted by cohenite, Thursday, 18 April 2013 8:41:13 PM
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And World War II exposed the brilliant grasp of reality behind Nazi ideology.
Why is it so hard for alarmists to come out and admit that the models are wrong? Wrong in detail, wrong in concept, cobbled together from equal amounts of hysterical panic and greed for funding, constructed from nothing in a selfish and brutal attempt to terrify the world for status and personal gain?
It's over, Fred. Find some other way to try and scare gullible taxpayers.