Updated list of 66 excuses for the 18-26 year ‘pause’ in global warming
“If you can’t explain the ‘pause’, you can’t explain the cause”
http://hockeyschtick.blogspot.com/2014/11/updated-list-of-64-excuses-for-18-26.html
2) Oceans ate the global warming [debunked] [debunked] [debunked]
3) Chinese coal use [debunked]
5) What ‘pause’? [debunked] [debunked] [debunked] [debunked]
6) Volcanic aerosols [debunked]
8) Faster Pacific trade winds [debunked]
10) ‘Coincidence!’
11) Pine aerosols
12) It’s “not so unusual” and “no more than natural variability”
13) “Scientists looking at the wrong ‘lousy’ data” http://
14) Cold nights getting colder in Northern Hemisphere
15) We forgot to cherry-pick models in tune with natural variability [debunked]
16) Negative phase of Interdecadal Pacific Oscillation
18) “Global brightening” has stopped
20) “It’s the hottest decade ever” Decadal averages used to hide the ‘pause’ [debunked]
22) Temperature variations fall “roughly in the middle of the AR4 model results”
23) “Not scientifically relevant”
24) The wrong type of El Ninos
25) Slower trade winds [debunked]
26) The climate is less sensitive to CO2 than previously thought [see also]
27) PDO and AMO natural cycles and here
28) ENSO
31) “Experts simply do not know, and bad luck is one reason”
32) IPCC climate models are too complex, natural variability more important
35) Scientists forgot “to look at our models and observations and ask questions”
36) The models really do explain the “pause” [debunked] [debunked] [debunked]
38) Trenberth’s “missing heat” is hiding in the Atlantic, not Pacific as Trenberth claimed
[debunked] [Dr. Curry’s take] [Author: “Every week there’s a new explanation of the hiatus”]
41) Internal variability, because Chinese aerosols can either warm or cool the climate:
42) Trenberth’s ‘missing heat’ really is missing and is not “supported by the data itself” in the “real ocean”:
43) Ocean Variability:
“After some intense work by of the community, there is general agreement that the main driver [of climate the “pause”] is ocean variability. That’s actually quite impressive progress.”
44) The data showing the missing heat going into the oceans is robust and not robust:
” I think the findings that the heat is going into the Atlantic and Southern Ocean’s is probably pretty robust. However, I will defer to people like Josh Willis who know the data better than I do.”-Andrew Dessler. Debunked by Josh Willis, who Dessler says “knows the data better than I do,” says in the very same NYT article that “it is not clear to me, actually, that an accelerated warming of some…layer of the ocean … is robustly supported by the data itself” – Josh Willis
45) We don’t have a theory that fits all of the data:
“Ultimately, the challenge is to come up with the parsimonious theory [of the ‘pause’] that fits all of the data” [Andrew Dessler]
46) We don’t have enough data of natural climate cycles lasting 60-70 years to determine if the “pause” is due to such natural cycles:
“If the cycle has a period of 60-70 years, that means we have one or two cycles of observations. And I don’t think you can much about a cycle with just 1-2 cycles: e.g., what the actual period of the variability is, how regular it is, etc. You really need dozens of cycles to determine what the actual underlying variability looks like. In fact, I don’t think we even know if it IS a cycle.” [Andrew Dessler]
47) Could be pure internal [natural] variability or increased CO2 or both
“this brings up what to me is the real question: how much of the hiatus is pure internal variability and how much is a forced response (from loading the atmosphere with carbon). This paper seems to implicitly take the position that it’s purely internal variability, which I’m not sure is true and might lead to a very different interpretation of the data and estimate of the future.” [Andrew Dessler]
48) Its either in the Atlantic or Pacific, but definitely not a statistical fluke:
” If the science is done right, the calculated uncertainty takes account of this background variation. But none of these papers, Tung, or Trenberth, does that. Overlain on top of this natural behavior is the small, and often shaky, observing systems, both atmosphere and ocean where the shifting places and times and technologies must also produce a change even if none actually occurred. The “hiatus” is likely real, but so what? The fuss is mainly about normal behavior of the climate system.” [Carl Wunsch]
50) The observational data we have is inadequate, but we ignore uncertainty to publish anyway:
53) Competition” with two natural ocean oscillations
54) ‘Global quasi-stationary waves’ from natural ocean oscillations
55) Reduced warming in North Atlantic subpolar gyre
56) Satellites underestimate cooling from volcanic aerosols
57) Increase in mid- and upper level clouds
58) Colder eastern Pacific and reduced heat loss in other oceans
59) A “zoo of short-term trends”
60) IPCC Synthesis Report excuses for the “pause”: volcanoes, solar activity, possible redistribution of heat:
which has allegedly “now stopped. The negative IPO has stopped. This is the same as saying the global warming hiatus has stopped.” -Axel Timmermann [debunked]65) Small volcanic eruptions [debunk – SO2 emissions should have increased warming instead]
66) There’s no “pause” if you look at only at the warmest & coldest day of the year
Additional related comments from climate scientists about the “pause”
4) “if you try really hard to mangle the data, and cherry pick very skillfully, you can make a case” for the “pause”
5) Michael Asten from Monash University’s School of Earth Atmosphere and Environment said that, while opinions on causes differed, the existence of the pause was settled. “Only activists dare claim the pause in global temperature does not exist,” Professor Asten said
and a roundup of climate scientists talking about no warming, from Jimbo at WUWT, and via Andrew Bolt’s Herald Sun blog
“The scientific community would come down on me in no uncertain terms if I said the world had cooled from 1998. OK it has but it is only 7 years of data and it isn’t statistically significant….”
Dr. Phil Jones – CRU emails – 7th May, 2009
“…This lack of overall warming is analogous to the period from 2002 to 2008 when decreasing solar irradiance also countered much of the anthropogenic warming…”
Dr. Kevin Trenberth – CRU emails – 12 Oct. 2009
“Well, I have my own article on where the heck is global warming…..The fact is that we can’t account for the lack of warming at the moment and it is a travesty that we can’t.”
Dr. Mojib Latif – Spiegel – 19th November 2009
“At present, however, the warming is taking a break,”…….”There can be no argument about that.”
Dr. Jochem Marotzke – Spiegel – 19th November 2009
“It cannot be denied that this is one of the hottest issues in the scientific community…. We don’t really know why this stagnation is taking place at this point.”
Dr. Phil Jones – BBC – 13th February 2010
“I’m a scientist trying to measure temperature. If I registered that the climate has been cooling I’d say so. But it hasn’t until recently – and then barely at all. The trend is a warming trend.”
Dr. Phil Jones – BBC – 13th February 2010
[Q] B – “Do you agree that from 1995 to the present there has been no statistically-significant global warming”
[A] “Yes, but only just”.
Prof. Shaowu Wang et al – Advances in Climate Change Research – 2010
“…The decade of 1999-2008 is still the warmest of the last 30 years, though the global temperature increment is near zero;…”
Dr. Robert K. Kaufmann – PNAS – 2nd June 2011
“…..it has been unclear why global surface temperatures did not rise between 1998 and 2008…..”
Dr. Gerald A. Meehl – Nature Climate Change – 18th September 2011
“There have been decades, such as 2000–2009, when the observed globally averaged surface-temperature time series shows little increase or even a slightly negative trend1 (a hiatus period)….”
Met Office Blog – Dave Britton (10:48:21) – 14 October 2012
“We agree with Mr Rose that there has been only a very small amount of warming in the 21st Century. As stated in our response, this is 0.05 degrees Celsius since 1997 equivalent to 0.03 degrees Celsius per decade.”
Dr. James Hansen – NASA GISS – 15 January 2013
“The 5-year mean global temperature has been flat for a decade, which we interpret as a combination of natural variability and a slowdown in the growth rate of the net climate forcing.”
Dr. Virginie Guemas – Nature Climate Change – 7 April 2013
“…Despite a sustained production of anthropogenic greenhouse gases, the Earth’s mean near-surface temperature paused its rise during the 2000–2010 period…”
Dr. Hans von Storch – Spiegel – 20 June 2013
“…the increase over the last 15 years was just 0.06 degrees Celsius (0.11 degrees Fahrenheit) — a value very close to zero….If things continue as they have been, in five years, at the latest, we will need to acknowledge that something is fundamentally wrong with our climate models….”
Professor Masahiro Watanabe – Geophysical Research Letters – 28 June 2013
“The weakening of k commonly found in GCMs seems to be an inevitable response of the climate system to global warming, suggesting the recovery from hiatus in coming decades.”
Professor Rowan Sutton – Independent – 22 July 2013
“Some people call it a slow-down, some call it a hiatus, some people call it a pause. The global average surface temperature has not increased substantially over the last 10 to 15 years.”
UPDATE: Oh, did they forget to mention the planet wouldn’t actually warm for a while? Their bad:
Scientists have long been aware that climate change would not happen at a fixed rate and could include periods where temperatures remain stable for 10 to 20 years, but admitted they had failed to explain this to the public in the past.
Prof Rowan Sutton, Director of Climate Research at the University of Reading, said: “Within the field we have taken for granted that there will be variations in the rate of warming, it is totally accepted and is no surprise …[it] would correct to say that wasn’t the message that we communicated more widely and that probably is a failing.”
UPDATE: C3 has updated the Wayne’s World list of excuses for the “pause”:
Related:
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