INTERESTING to see how the warmist community will spin the “science” from these latest inconvenient findings that contradict IPCC climate model predictions and the endless “Hottest Year Evah“ PR claims.
NO doubt, Climate Crisis Inc … and the UN IPCC won’t go near it. And don’t expect to see empirical evidence of globally cooling oceans and thickening glaciers gleefully reported on CNN, BBC or ABC Australia. Any climate news that doesn’t fit the human-caused warming narrative is expressly ignored by the #FakeNews mainstream media, using their favoured and most effective propaganda weapon – confirmation bias.
MORE from Kenneth Richard via Pierre Gosselin’s excellent site NoTricksZone :
12 New Papers: North Atlantic, Pacific, And Southern Oceans Are Cooling As Glaciers Thicken, Gain Mass
Contrary to expectations, climate scientists continue to report that large regions of the Earth have not been warming in recent decades.
According to Dieng et al. (2017), for example, the global oceans underwent a slowdown, a pause, or even a slight cooling trend during 2003 to 2013. This undermines expectations from climate models which presume the increase in radiative forcing from human CO2 emissions should substantially increase ocean temperatures.
The authors indicate that the recent trends in ocean temperatures “may just reflect a 60-year natural cycle“, the AMO (Atlantic Multidecadal Oscillation), and not follow radiative forcing trends.
Dieng et al., 2017 We investigate the global mean and regional change of sea surface and land surface temperature over 2003–2013, using a large number of different data sets, and compare with changes observed over the past few decades (starting in 1950). … While confirming cooling of eastern tropical Pacific during the last decade as reported in several recent studies, our results show that the reduced rate of change of the 2003–2013 time span is a global phenomenon. GMST short-term trends since 1950 computed over successive 11-year windows with 1-year overlap show important decadal variability that highly correlates with 11-year trends of the Atlantic Multidecadal Oscillation index. The GMST 11-year trend distribution is well fitted by a Gaussian function, confirming an unforced origin related to internal climate variability.
We evaluate the time derivative of full-depth ocean heat content to determine the planetary energy imbalance with different approaches: in situ measurements, ocean reanalysis and global sea level budget. For 2003–2013, it amounts to 0.5 +/− 0.1 W m−2, 0.68 +/− 0.1 W m−2 and 0.65 +/− 0.1 W m−2, respectively for the three approaches. Although the uncertainty is quite large because of considerable errors in the climate sensitivity parameter, we find no evidence of decrease in net radiative forcing in the recent years, but rather an increase compared to the previous decades.
We can note that the correlation between GMST [global mean surface temperature] trends and AMO trends is quite high. It amounts 0.88 over the whole time span. At the beginning of the record, the correlation with PDO trends is also high (equal to 0.8) but breaks down after the mid-1980s. The GMST and AMO trends shown in Figure 6 show a low in the 1960s and high in the 1990s, suggestive of a 60-year oscillation, as reported for the global mean sea level by Chambers et al. (2012). Thus the observed temporal evolution of the GMST [global mean surface temperature] trends may just reflect a 60-year natural cycle driven by the AMO.
Subpolar North Atlantic Cooling Rapidly Since 2005
According to Piecuch et al. (2017) there has been no net warming of the North Atlantic Ocean in the last quarter century. The warming that occurred in the 10 years from 1994-2004 has been completely negated by an even more pronounced cooling trend since 2005. The predominant (87%) cause of the warming was determined to be of the same natural (non-anthropogenic) origin as the subsequent cooling: advection, the movement/circulation of heat via internal processes. In fact, human CO2 emissions are never mentioned as even contributing to the the 1994-2004 warming.
Piecuch et al., 2017 The subpolar North Atlantic (SPNA) is subject to strong decadal variability, with implications for surface climate and its predictability. In 2004–2005, SPNA decadal upper ocean and sea-surface temperature trends reversed from warming during 1994–2004 to cooling over 2005–2015. … Over the last two decades, the SPNA has undergone a pronounced climate shift. Decadal OHC and SST trends reversed sign around 2004–2005, with a strong warming seen during 1994–2004 and marked cooling observed over 2005–2015. These trend reversals were pronounced (> 0.1 °C yr−1 in magnitude) in the northeastern North Atlantic (south and west of Iceland) and in the Labrador Sea. … To identify basic processes controlling SPNA thermal variations, we diagnose the SPNA heat budget using ECCOv4. Changes in the heat content of an oceanic control volume can be caused by convergences and divergences of advective, diffusive, and surface heat fluxes within the control volume. [Advective heat convergence] explains 87% of the total [ocean heat content] variance, the former [warming] showing similar decadal behavior to the latter [cooling], increasing over 1994–2004, and decreasing over 2005–2015. … These results demonstrate that the recent SPNA decadal trend reversal was mostly owing to advective convergences by ocean circulation … decadal variability during 1993–2015 is in largest part related to advection by horizontal gyres.
Yeager and Robson (2017) also point out that, like it did from the 1960s to 1980s, the North Atlantic “has again been cooling”, a trend which they and others expect to continue. Sea surface temperatures are no warmer today than they were in the 1950s.
Yeager and Robson, 2017 [W]hile the late twentieth century Atlantic was dominated by NAO-driven THC [thermohaline circulation] variability, other mechanisms may dominate in other time periods. … More recently, the SPNA [sub polar North Atlantic] upper ocean has again been cooling, which is also thought to be related to a slowdown in the THC. A continued near-term cooling of the SPNA has been forecast by a number of prediction systems, with implications for pan-Atlantic climate.
The Southern Ocean Has Been Cooling Since The 1970s, Contrary To Models
Latif et al., 2017 The Southern Ocean featured some remarkable changes during the recent decades. For example, large parts of the Southern Ocean, despite rapidly rising atmospheric greenhouse gas concentrations, depicted a surface cooling since the 1970s, whereas most of the planet has warmed considerably. In contrast, climate models generally simulate Southern Ocean surface warming when driven with observed historical radiative forcing. The mechanisms behind the surface cooling and other prominent changes in the Southern Ocean sector climate during the recent decades, such as expanding sea ice extent, abyssal warming, and CO2 uptake, are still under debate. Observational coverage is sparse, and records are short but rapidly growing, making the Southern Ocean climate system one of the least explored. It is thus difficult to separate current trends from underlying decadal to centennial scale variability.
Turney et al., 2017 Occupying about 14% of the world’s surface, the Southern Ocean plays a fundamental role in ocean and atmosphere circulation, carbon cycling and Antarctic ice-sheet dynamics. … As a result of anomalies in the overlying wind, the surrounding waters are strongly influenced by variations in northward Ekman transport of cold fresh subantarctic surface water and anomalous fluxes of sensible and latent heat at the atmosphere–ocean interface. This has produced a cooling trend since 1979.
- Stunning Drop In Global Temperatures As El Niño Warming Ends | Climatism
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GWPF Science Editor Dr David Whitehouse takes a close look at some recent developments in the long-running global temperature ‘pause’ controversy.
A new paper has been published in the Analysis section of Nature called Reconciling controversies about the ‘global warming hiatus.’ It confirms that the ‘hiatus’ or ‘pause’ is real. It is also rather revealing.
It attempts to explain the ‘Pause’ by looking into what is known about climate variability. They say that four years after the release of the IPCC AR5 report, which contained much about the ‘hiatus’ it is time to see what can be learned.
One could be a little sarcastic in saying why would Nature devote seven of its desirable pages to an event that some vehemently say never existed and maintain its existence has been disproved long ago.
Now, however, as the El Nino spike of the past few years levels off, analysing the…
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“The gap between observations and models persists. The observed trend deviated by as much as −0.17 °C per decade from the CMIP5 (Coupled Model Intercomparison Project Phase 5; ref. 19) ensemble-mean projection1—a gap two to four times the observed trend.
The hiatus therefore continues to challenge climate science.”
– Nature Climate Change (PEER-REVIEWED STUDY)
“This paper published today in Nature Climate Change by Hedemann et al. not only confirms the existence of “the pause” in global temperature, but suggests a cause, saying “…the hiatus could also have been caused by internal variability in the top-of-atmosphere energy imbalance“.
That’s an important sentence, because it demonstrates that despite many claims to the contrary, CO2 induced forcing of the planetary temperature is not the control knob, and natural variability remains in force.”
The “pause/hiatus” in Global Warming is now nearing 20 YEARS. This despite *record* man-made CO2 emitted over the same period.
Don’t be at all surprised if – CNN, BBC, ABC, CNBC, LATimes, NYTimes, WaPo, The Age, SMH and the rest of the “climate change” obsessed sycophant media don’t report this massively inconvenient climate news. – Too many reputations, jobs, govt grants and funding are now at stake.
The “uncertainty monster” strikes again
We’ve been highly critical for some time of the paper in summer 2015 by Karl et al. that claimed “the pause” or hiatus went away once “properly adjusted” ocean surface temperature data was applied to the global surface temperature dataset. Virtually everyone in the climate skeptic community considers Karl et al. little more than a sleight of hand.
No matter, this paper published today in Nature Climate Change by Hedemann et al. not only confirms the existence of “the pause” in global temperature, but suggests a cause, saying “…the hiatus could also have been caused by internal variability in the top-of-atmosphere energy imbalance“.
That’s an important sentence, because it demonstrates that despite many claims to the contrary, CO2 induced forcing of the planetary temperature is not the control knob, and natural variability remains in force.
Also of note, see the offset as designated…
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Study: Worsening drought from climate change may be ‘considerably weaker and less extensive than previously thought’Posted: June 7, 2016
From the department of “settled science”…
A new publication in Nature Climate Change puts the brakes on predictions that global warming/climate change may produce continental scale droughts into the late 21st century. For example, NCAR said in 2010: CLIMATE CHANGE: DROUGHT MAY THREATEN MUCH OF GLOBE WITHIN DECADES
Then they had to back down and correct the original, when they found the drought PDSI (Palmer Drought Severity Index) numbers were overestimated by double the amount:
Update – July 3, 2012
This news release has been revised to reflect a miscalculation in the original study that inadvertently resulted when simulations of historical drought were combined with simulations of future drought. The revised maps, below, indicate that drought levels on the Palmer Drought Severity Index may reach -10 in certain regions, whereas the levels reached -20 on the original maps. Similarly, upper-latitude areas become less moist than previously projected. Large portions of the globe are still expected to…
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When the journal “Science” prints a study doubting CO2 sensitivity, or basically, the effect that man-made CO2 has on the temperature of the atmosphere, you can be 100% sure that the “science” of climate change is most definitely not “settled”!
By David Kreutzer, Ph.D. ~
Last summer, the editor of Science wrote a commentary on climate change where she said “The time for debate has ended.”
After appealing to policies based on economic knowledge she doesn’t have, she finished with speculation as to which ring of Dante’s Inferno would God designate for climate skeptics.
U.S. Secretary of State John Kerry with former Vice President Al Gore at the Paris Climate Conference. (Photo: State Department/Sipa USA/Newscom)
All in all, it was an awesomely unscientific tour de farce and totally depressing in that it came from one of the world’s two most prestigious science journals.
Of course the time for debate hasn’t ended—especially for the meaningful debate concerning how much impact carbon dioxide has on global warming.
The relationship under debate is how much warming will the world see from a doubling of carbon dioxide—which is called the equilibrium climate sensitivity.
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Friday, 22 July 2011
A recently published study on sea level rises in Australia and New Zealand has some questioning the effect of climate change on the oceans.
Phil Watson, a coastal researcher with the New South Wales Office of Environment and Heritage, analysed data from four tide gauges, located at Fremantle, Sydney, Newcastle and Auckland, collected as far back as 1897.
He notes in his study that various long-term factors such as changes in the Moon’s orbit, El Nino events and the Pacific Decadal Oscillation affect sea levels on a periodic basis. To remove these effects, the data was converted into a 20-year moving average.
“The 20-year moving average water level time series through to 2000 clearly depict relative water level changes that are increasing over time, though at a reducing rate,” writes Watson in his study which appeared in the Journal of Coastal Research.
He says the most reliable gauges, located at Fremantle and Auckland, show an increase in sea level of approximately 120 millimetres between 1920 and 2000, or 1.5 millimetres per year. But this increase is reducing at a rate of between 0.02 and 0.04 millimetres per year.
“This decelerating trend was also evident in the detailed analysis of 25 US tide gauge records longer than 80 years in length,” he writes.
“Further research is required to rationalise the difference between the acceleration trend evident in the global sea level time-series reconstructions and the relatively consistent deceleration trend evident in the long-term Australasian tide gauge records.”