«It's fair to say that over the next couple of decades, we would expect to see the trend reverse, and internal
variability accelerating the warming.»
Not exact matches
We are rather suggesting that Arctic
warming could
accelerate or decelerate due to internal
variability of the Pacific and the Atlantic.»
However, global
warming could likewise suddenly and without any ostensive cause
accelerate due to internal
variability.
He and others have also proposed that soot, by darkening Arctic ice and snow, could be
accelerating the boreal melt well beyond what would happen only under natural climate
variability or the growing
warming influence from greenhouse gases.
A statistical model (based on the work of Judith Lean at the Naval Research Laboratory) that accounts for solar
variability, El Niño, volcanic activity, and greenhouse
warming indicates that the underlying trend of global
warming has
accelerated over the past 15 years.
Instead, this
accelerated warming could have come about due to a combination of anthropogenic forcing and unforced
variability.
It seems the problems began when the journal's editors agreed to a special issue on «Pattern in solar
variability, their planetary origin and terrestrial impacts,» in which the issue's editors had the temerity to «doubt the continued, even
accelerated,
warming as claimed by the IPCC project.»
J. T. Fasullo, R. S. Nerem & B. Hamlington Scientific Reports 6, Article number: 31245 (2016) doi: 10.1038 / srep31245 Download Citation Climate and Earth system modellingProjection and prediction Received: 13 April 2016 Accepted: 15 July 2016 Published online: 10 August 2016 Erratum: 10 November 2016 Updated online 10 November 2016 Abstract Global mean sea level rise estimated from satellite altimetry provides a strong constraint on climate
variability and change and is expected to
accelerate as the rates of both ocean
warming and cryospheric mass loss increase over time.
Abstract: «Global mean sea level rise estimated from satellite altimetry provides a strong constraint on climate
variability and change and is expected to
accelerate as the rates of both ocean
warming and cryospheric mass loss increase over time.
«
Variability in the ocean will not affect long - term climate trends but may mean we have a period of
accelerated warming to look forward to,» he said.
Rather, it is superimposed with
variability that can make the
warming signal disappear or appear to
accelerate for decades.
«When the internal
variability that is responsible for the current hiatus switches sign, as it inevitably will, another episode of
accelerated global
warming should ensue,» the paper's authors write.
When the internal
variability is removed from the temperature record, what we find is nearly monotonic,
accelerating warming throughout the 20th Century.
With increased loading of greenhouse gases in the atmosphere through the 21st century, the models show an
accelerated warming in the Southern Ocean, and indicate that anthropogenic forcing exceeds natural internal
variability.
Recent
accelerated warming of the Arctic results from a positive reinforcement of the linear
warming trend (due to an increasing concentration of greenhouse gases and other possible forcings) by the
warming phase of the multidecadal climate
variability (due to fluctuations of the Atlantic Ocean circulation).»
«
Variability in the ocean will not affect long - term climate trends, but may mean we have a period of
accelerated warming to look forward to.»
1998 was near the tail end of a decade that jumped well above the mean average longer term rate of increase (there is a thing called climate
variability, it didn't disappear with climate change, and if anything probably only intensified;, and ocean
warming and glacial melt both
accelerated during this period, taking more energy out of the air — see below).
Removal of that hidden
variability from the actual observed global mean surface temperature record delineates the externally forced climate signal, which is monotonic,
accelerating warming during the 20th century.
The presence of multidecadal internal
variability superimposed on the secular trend gives the appearance of
accelerated warming and cooling episodes at roughly regular intervals.
Given the fact that we now measure i) a > 35 year
warming in the atmosphere, ii) an unabated ~ 35 year increase in 0 - 2000 meter ocean heat content and iii) an shorter - term but
accelerating melting of land ice (Greenland, Antarctica, glaciers), is there any possible mechanism that could explain such simultaneous
warming in terms of natural
variability in the absence of a net forcing?
Interdecadal 20th century temperature deviations, such as the
accelerated observed 1910 — 1940
warming that has been attributed to an unverifiable increase in solar irradiance (4, 7, 19, 20), appear to instead be due to natural
variability.
The shift provides additional evidence that changes in the Arctic are not only directly because of global
warming, as shown by
warmer air and sea temperatures, but are also part of an «Arctic amplification» through which multiple Arctic - specific physical processes interact to
accelerate temperature change, ice
variability, and ecological impacts.
Second, this general prediction «'' internal
variability leading to slower than expected
warming in recent years through 2010, followed by
accelerated warming «'' is almost exactly the same prediction that the Hadley Center made last summer in Science (see here).
One more: «Interdecadal 20th century temperature deviations, such as the
accelerated observed 1910 — 1940
warming that has been attributed to an unverifiable increase in solar irradiance (4, 7, 19, 20), appear to instead be due to natural
variability.