«I propose a robust definition for the length
of the pause in the warming trend over the closing subsample of surface and lower tropospheric data sets.
well that criterion isn't fullfilled either, as is well known from the many analyses where the effects of ENSO have been subtracted from the time series (after which there is no evidence
of any pause in the warming, suggesting that the pause is due to the effects of ENSO).
Don't bother trying to convince
them of a pause in the warming.
Dr. Swanson: Another question — This prediction
of a pause in the warming seems somewhat similar to the prediction of Keenlyside et al., although, as I understand it, theirs is based simply on a direct model prediction (with an attempt, whether successful or not, to use realistic initial conditions in initializing their model).
I think the interesting question raised (though not definitively answered) by this line of work is the extent to which
some of the pause in warming mid-century might have been more due to decadal ocean variability rather than aerosols than is commonly thought.
There is no longer any evidence
of a pause in warming through present in any of the land surface temperature records.
To believe in a complex theory after 1 correct prediction (modified a bit in light
of the pauses in warming that were not predicted) would be what the Skinnerians called «superstition», and what Feynman called «Cargo Cult» science.
Not exact matches
It offers many dividends: The opportunity to meet And chat with old and new - found friends; The amiable atmosphere; The comfortable cushioned seat; The promise
of two hours clear Of irritating chores, restraints, Dilemmas, quarrels, and complaints; The vespertine impressive hall That grants equality to all And cover for a nap to some; The stirring burst of warm applause When the conductor comes in view And talkers instantly grow dumb; The pleasantly suspenseful pause As the ensemble waits its cu
of two hours clear
Of irritating chores, restraints, Dilemmas, quarrels, and complaints; The vespertine impressive hall That grants equality to all And cover for a nap to some; The stirring burst of warm applause When the conductor comes in view And talkers instantly grow dumb; The pleasantly suspenseful pause As the ensemble waits its cu
Of irritating chores, restraints, Dilemmas, quarrels, and complaints; The vespertine impressive hall That grants equality to all And cover for a nap to some; The stirring burst
of warm applause When the conductor comes in view And talkers instantly grow dumb; The pleasantly suspenseful pause As the ensemble waits its cu
of warm applause When the conductor comes
in view And talkers instantly grow dumb; The pleasantly suspenseful
pause As the ensemble waits its cue.
On the
warm afternoon
of Labor Day, five days before Nebraska would open its football season with a 55 - 14 pasting
of Michigan State, Cornhuskers junior defensive end Grant Wistrom
paused as he left the practice field
in Lincoln and pondered the ribbon
of greatness that stretched back over two years.
Jochem Marotzke and Piers M. Forster have now explained the
warming pause in terms
of random fluctuations arising from chaotic processes
in the climate system.
However,
in light
of our substantiation
of the effects
of «grand solar minima» upon past global climates, it could be speculated that the current
pausing of «Global
Warming», which is frequently referenced by those sceptical
of climate projections by the IPCC, might relate at least
in part to a countervailing effect
of reduced solar activity, as shown
in the recent sunspot cycle.»
«What this study addresses is what's better described as a false
pause, or slowdown,» rather than a hiatus
in warming, says climate scientist Michael Mann
of Pennsylvania State University, University Park.
The deceleration
in rising temperatures during this 15 - year period is sometimes referred to as a «
pause» or «hiatus»
in global
warming, and has raised questions about why the rate
of surface
warming on Earth has been markedly slower than
in previous decades.
A favourite climate contrarian talking point is that there was a
pause or «hiatus»
in warming from 1998 until the early part
of the current decade.
So the report notes that the current «
pause»
in new global average temperature records since 1998 — a year that saw the second strongest El Nino on record and shattered
warming records — does not reflect the long - term trend and may be explained by the oceans absorbing the majority
of the extra heat trapped by greenhouse gases as well as the cooling contributions
of volcanic eruptions.
Evidence
of the «
pause»
in surface
warming «has sparked a lively scientific and public debate», says the Nature Climate Change editorial.
If a person can not detect a rather precise pattern
of warming and
pause in warming in the Global temperature record starting
in 1880 I can only say that to me the pattern is obvious.
They suggest this «
pause»
in the acceleration
of carbon dioxide concentrations was,
in part, due to the effect
of the temporary slowdown
in global average surface
warming during that same period on respiration, the process by which plants and soils release CO2.
And it's the year
in which any credible sign
of a
pause or «hiatus»
in the
warming of Earth's surface through present day was thoroughly refuted.
Using Cowtan and Way as an example again, the team would chose a specific subject;
in this case the claims
of a «
warming pause from 1998 to 2012».
The fact that the hindcasts with their method perform worse than a standard IPCC scenario, the number
of failed previous cooling predictions, the negative skill
in the Gulf Stream and deep - water formation regions... should these not have cautioned them against going to the media to forecast a
pause in global
warming?
(see http: / / wattsupwiththat.com / 2014 / 09 / 11 / list -
of - excuses - for - the -
pause -
in - global -
warming - is - now - up - to - 52 /).
Increasingly shrill and scary pronouncements
in the face
of the
warming «
pause» (however you want to spin it or explain it) don't sound credible.
«Now, an entirely new discussion is capturing the imagination, based on a group
of scientists from Germany predicting a
pause in global
warming last week»
@» the lack
of heating», the best comment was from a Royal Society spokesman
in 2007 around the time
of the Keenlyside «AMOC shutdown» simulation... «global
warming could
pause... even for a decade».
And then Joe goes on to point out that one possible explanation for the
pause is measurement — there's been a ton
of warming in the Arctic as if we are somehow hiding that fact when we talk about the
pause.
Explanations for the recent «
pause»
in SST
warming include La Niña - like cooling
in the eastern equatorial Pacific, strengthening
of the Pacific trade winds, and tropical latent heat anomalies together with extratropical atmospheric teleconnections.
Our point was not to focus on 1998;
in fact,
in the longer version
of our article that we sent to Nature we talk explicitly (and cite heavily) the work that has pinned the «
pause» to shifts
in El Nino / La Nina cycles and we also prominently mention the high latitude
warming.
I think that the idea
of a
pause in the global
warming has been a red herring ever since it was suggested, and we have commented on this several times here on RC: On how data gaps
in some regions (eg.
It isn't a
pause in global
warming trend (GT Warming) which you need more than 10 years (around 30 will do fine) but a drift from the trend (which CAN be seen in 10 years, if barely) that added to the trend which hasn't paused and gives an * appearance * of the climate (30 year) trend of having s
warming trend (GT
Warming) which you need more than 10 years (around 30 will do fine) but a drift from the trend (which CAN be seen in 10 years, if barely) that added to the trend which hasn't paused and gives an * appearance * of the climate (30 year) trend of having s
Warming) which you need more than 10 years (around 30 will do fine) but a drift from the trend (which CAN be seen
in 10 years, if barely) that added to the trend which hasn't
paused and gives an * appearance *
of the climate (30 year) trend
of having stopped.
But the
pause has persisted, sparking a minor crisis
of confidence
in the field... On a chart
of global atmospheric temperatures, the hiatus stands
in stark contrast to the rapid
warming of the two decades that preceded it.
Realize that as long as the Earth accumulates heat, there is no
pause in warming regardless
of what part
of the Earth the heat goes to
That all times
of enhanced coupling would tend to cause a
pause in the
warming trend does not seem likely.
if it's any consolation, the recent predictions discussed on this blog
of a «
pause»
in northern hemisphere global
warming — and, indeed, cooling
in the u.s. — may signal the end
of the line for the california wine growers.
It's a superb examination
of what's known, and unknown, about what James Hansen, Susan Solomon and other climate scientists have described as a
pause or hiatus
in warming.
Combine with Co2
warming the surface and it can just so happen that the two effects cancel at the surface for a «
pause» while the wind / current driven heating
of the subsurface causes extra heating
in the subsurface.
Why hasn't the «
pause» been debunked just by noting that it starts at a point nearly a decade's worth
of warming above the trend
in 1997?
A media analysis has shown that at least
in the U.S., about half
of all reports about the new IPCC report mention the issue
of a «
warming pause», even though it plays a very minor role
in the conclusions
of the IPCC.
[Response: The UAH satellite data show a
pause when you start
in 1998, but from 1999 they show a
warming of +0.15 °C per decade.
The corresponding intensification
of the atmospheric Walker circulation is also associated with sea surface cooling
in the eastern Pacific, which has been identified as one
of the contributors to the current
pause in global surface
warming.
However that is a statistical non-sequitur, based on a poor understanding
of frequentist hypothesis testing, unless the test can be shown to have adequate statistical power (which seems never to be mentioned by those claiming a
pause in warming).
The next three climate ads misstate the science
of climate change, incorrectly asserting rainfall and droughts are getting worse, that there has been no
pause in rising temperatures, and suggesting carbon dioxide has historically caused climate change when the fact is
warming has preceded rising carbon - dioxide levels
in the past.
Her main candidate for the
pause in warming is natural variability (El Nino / La Nina, for example) which would reduce attribution
of warming to greenhouse gasses.
On the one hand they like to use the 1997 - 98 El Nino to «claim» a
pause (their favorite starting point for a cherry pick), then
in the next breath use the last big one to say that it's not to be counted as an indication
of warming.
The recent
pause in the rate
of increase
in warming has left researchers scurrying to unravel the mystery.
A «
pause»
in the global temperature trend can be diagnosed, when both
of the following criteria are fulfilled: a) based on a robust statistical analysis, the global temperature trend is not statistically distinguishable from the Zero trend, b) based on a robust statistical analysis, the global temperature trend is statistically distinguishable from the longer - term, multi-decadal
warming trend (which itself is highly statistically significant).
I find concerned liberals are loath to talk about how consistently wrong climate models have been or about the «
pause»
in global
warming that has gone on for over fifteen years, while climate skeptics avoid discussion
of things like ocean acidification and accelerated melting
in Greenland and the Arctic.
The new study by the Scripps Institution
of Oceanography and supported by the US government's National Oceans and Atmospheric Administration (NOAA), published
in the journal Nature, has linked the «
pause»
in global
warming with the Pacific oscillation.
The study — «Possible Artifacts
of Data Biases
in the Recent Global Surface
Warming Hiatus» — was published by Science magazine
in June 2015 and pushed back against assertions from other research groups that found a
pause in rising global temperatures from 1998 to 2012, which goes against climate change advocates» insistence that the earth's temperature has been on a steady incline for decades.
I note the increasing frequency
of papers which either seek to deny / explain the observed 21st century
pause / cessation
in warming, either through uncertainty or observation error.