'The latest salvo in an ongoing row over global-warming trends claims that warming has indeed slowed down this century.

An apparent slowing in the rise of global temperatures at the beginning of the twenty-first century, which is not explained by climate models, was referred to as a “hiatus” or a “pause” when first observed several years ago. Climate-change sceptics have used this as evidence that global warming has stopped. But in June last year, a study in Science claimed that the hiatus was just an artefact which vanishes when biases in temperature data are corrected1.

Now a prominent group of researchers is countering that claim, arguing in Nature Climate Change that even after correcting these biases the slowdown was real2.
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“There is this mismatch between what the climate models are producing and what the observations are showing,” says lead author John Fyfe, a climate modeller at the Canadian Centre for Climate Modelling and Analysis in Victoria, British Columbia. “We can’t ignore it.”

Fyfe uses the term “slowdown” rather than “hiatus” and stresses that it does not in any way undermine global-warming theory.'

http://www.nature.com/news/global-warming-hiatus-debate-flares-up-again-1.19414

Yes there is, No there isn't.

The_Barnacle wrote on Feb 25^th, 2016 at 8:54pm:



Yep. The IPCC used "hiatus"
'The observed global mean surface temperature (GMST) has shown a much smaller increasing linear trend over the past 15 years than over the past 30 to 60 years Section 2.4.3, Figure 2.20, Table 2.7; Figure 9.8; Box 9.2 Figure 1a, c). Depending on the observational data set, the GMST trend over 1998–2012 is estimated to be around one-third to one-half of the trend over 1951–2012 (Section 2.4.3, Table 2.7; Box 9.2 Figure 1a, c). For example, in HadCRUT4 the trend is 0.04oC per decade over 998–2012, compared to 0.11oC per decade over 1951–2012. The reduction in observed GMST trend is most marked in Northern Hemisphere winter (Section 2.4.3; Cohen et al., 2012). Even with this “hiatus” in GMST trend, the decade of the 2000s has been the warmest in the instrumental record of GMST (Section 2.4.3, Figure 2.19). Nevertheless, the occurrence of the hiatus in GMST trend during the past 15 years raises the two related questions of what has caused it and whether climate models are able to reproduce it. '

http://www.climatechange2013.org/images/report/WG1AR5_Chapter09_FINAL.pdf

Both Karl and Schmidt are defending Karl's paper. What did you expect?

The_Barnacle wrote on Feb 25^th, 2016 at 9:29pm:


So your argument is definitions don't matter? What is your definition of Climate Change? That it it is only the anthropogenic component?

Hey random

No one is disputing that the Earth has been warming, we can all see the data.

But we can also see that the IPCC computer models are WRONG, we know this through observation the last 25 years.

And that manmade CO2 is a greenhouse gas that really has a very very small contribution to the greenhouse effect

Warming by the end of this century

IPCC computer models  projected warming……… +2.78° C / Century

Observations the last 25 years………………………….. +1.01° C / Century



The question for people like you is how can you still believe in the IPCC when they got it wrong.

If we on this side (skeptics) where proven so wrong you wouldn't even have the time of day for us, probably just referring back to the observations.

How is it that you still believe in the BS the IPCC is spewing out when its right in front of you in black and white?

The correlation the IPCC have made in their models between CO2 and temperature is WRONG, again by observation!!!!!!



Now please tell me why the IPCC showed the medieval warm period and the little ice age in 1990 and then took it out in 2001 replacing it with Mann's  hockey schhtick.

What the bark do you mean when you say blah blah blah.

I'm presenting you facts just like you are presenting facts to me......????

I agree the earth is warming but not due to the emissions of manmade CO2.

The Earth's temperature has always fluctuated in more or less a sinusoidal pattern.

Are you trying to say that we (us humans) should some how make the temperature flat line.............??????

NEVER GOING TO HAPPEN!!

random wrote on Feb 27^th, 2016 at 9:58am:


I suggest you do a bit more research and you'll see that even though man's emissions of CO2 do contribute to the greenhouse effect they are at best MINIMAL.

Now off you go...........

random wrote on Feb 27^th, 2016 at 10:04am:


Random you come across as someone who would burn witches at the stake or join a nazi party all on hearsay and innuendo.

I've presenting you the facts in black and white and still you believe!!!!????

Warming by the end of this century

IPCC computer models  projected warming……… +2.78° C / Century

Observations the last 25 years……………………… +1.01° C / Century

Ajax wrote on Feb 27^th, 2016 at 10:30am:


Batman, I noticed that you used bold text for some of the content in your post.

well done mate

Congratulations for highlighting and emphasising the "bits" in your posts that you felt were important. It certainly made your post clearer even though I sensed some subtle overtones in your posts that suggests to me that you arent entirely convinced that carbon Dioxide is a greenhouse gas.

Batman, I can offer you some comfort and clear some of the doubt you are obviously feeling at the moment concerning CO2 and assure you that Carbon Dioxide is indeed a greenhouse gas - there is no two ways about it mate. Not only that mate, but if you burn a fossil fuel such as gas or coal, one of the major by-products of this combustion process is in fact Carbon Dioxide - amazing coincidence? Some say "Perhaps", but I say "no way Jose"

Well one on cheering yourself up and keeping your chin up. I dont want to see any more tears from you mate. We dont want to plunge back into the olden dark days do we Batman.

Good luck mate and take care

....and well done