Not exact matches
While it is still possible that other factors, such as heat storage
in other oceans or an increase
in aerosols, have led to cooling
at the Earth's surface, this research is yet another piece of evidence that strongly points to the Pacific Ocean as the reason behind a
slowdown in warming.
Gerald Meehl, a climate scientist
at the National Center for Atmospheric Research who was also an author on the paper, said this research expanded on past work, including his own research, that pointed to the Interdecadal Pacific Oscillation as a factor
in a
warming slowdown by finding a mechanism behind how the Pacific Ocean was able to store enough heat to produce a pause
in surface
warming.
«It is often presumed that the cooler North Atlantic will quickly lead to cooling
in Europe, or
at least a
slowdown in its rate of
warming,» says Ayako Yamamoto, a PhD student
in McGill's department of Atmospheric and Oceanic Sciences and lead author of the study.
The results show that even though there has been a
slowdown in the
warming of the global average temperatures on the surface of Earth, the
warming has continued strongly throughout the troposphere except for a very thin layer
at around 14 - 15 km above the surface of Earth where it has
warmed slightly less.
«There is no
slowdown in global
warming,» Russell Vose, the head of the climate science division
at the National Centers for Environmental Information (NCEI), said.
Peter Stott, the head of climate monitoring
at the U.K. Met Office, agreed, noting
in an email that, «The
slowdown hasn't gone away, however, the results of this study still show the
warming trend over the past 15 years has been slower than previous 15 year periods.
There are then
at least three independent lines of evidence that confirm we are not dealing with a
slowdown in the global
warming trend, but rather with progressive global
warming with superimposed natural variability:
He and his colleagues have even done analyses that show that after correcting for ENSO effects, there is no sign of a
slowdown in global
warming at all.
Slowed
Warming Zeke Hausfather, a data analyst
at the Berkeley Earth project, has filed «Examining the Recent
Slowdown in Global
Warming»
at the Yale Forum on Climate Change and the Media.
If that is
in fact the case, and I see no reason to doubt it, then the fact that the oceans are continuing to
warm can have no bearing on the hiatus
at all, and will not reflect the
slowdown in atmospheric
warming for «decades.»
http://climate.nasa.gov/news/1141/: «Norman Loeb, an atmospheric scientist
at NASA's Langley Research Center, recently gave a talk on the «global
warming hiatus,» a
slowdown in the rise of the global mean surface air temperature.
There is no «global cooling»
at all, despite Monckton's caption — the globe is
warming at about 0.18 °C per decade and has been for several decades, with no sign of even a
slowdown in this
warming, let alone a halt or reversal.
The newest paper,
in the current issue of Science, «Varying planetary heat sink led to global -
warming slowdown and acceleration,» argues that the Atlantic not only has shaped the current plateau, but also was responsible for half of the sharp global
warming at the end of the 20th century.
A lot of people here
at the UN climate talks
in Lima say this shows there is no
slowdown in warming.
Professor Adam Scaife, the head of monthly to decadal prediction
at the Met Office Hadley Centre, said: «The end of the recent
slowdown in global
warming is due to a flip
in Pacific sea - surface temperatures.
Looking
at all of the various inputs to global climate - including CO2 and SO2 emissions from man, and natural cycles like La Nina / El Nino, as well as changes
in the sun - they believe that the rising sulfate emissions is the most likely factor to have cause the global
warming slowdown, between 1998 and 2008.
Now I'm not denying that a plateau, or
at least a
slowdown in the rate of
warming exists, but I'd like more evidence before I'll accept it started as long as 16 years ago.
And even
in the very unlikely case that we saw CO2 continuing to grow
at the same exponential rate as
in the past, despite a major
slowdown in population growth, we would see a maximum
warming by 2100 of 1.8 °C.
Responding to and
in the manner of KK Tung's UPDATE (and, you can quote me): globally speaking the slowing of the rapidity of the
warming, were it absent an enhanced hiatus compared to prior hiatuses, must
at the least be interpreted as nothing more than a
slowdown of the positive trend of uninterrupted global
warming coming out of the Little Ice Age that has been «juiced» by AGW as evidenced by rapid
warming during the last three decades of the 20th Century, irrespective of the fact that, «the modern Grand maximum (which occurred during solar cycles 19 — 23, i.e., 1950 - 2009),» according to Ilya Usoskin, «was a rare or even unique event,
in both magnitude and duration,
in the past three millennia [that's, 3,000 years].»
One of the most controversial subjects
in the report was how to deal with what appears to be a
slowdown in warming if you look
at temperature data for the past 15 years.
As for how long the
slowdown in warming might last, estimates run the gamut — from «by the end of this decade» to another 20 years, based on the mix of mechanisms driving the
slowdown, according to several studies presented
at the American Meteorological Society's annual meeting
in Phoenix earlier this month.
LONDON, 26 April, 2017 — A leading climate scientist says claims that there has been a
slowdown or hiatus
in the rate
at which global
warming is happening are not supported by statistical evidence.
And that lull
in warming has occurred even as greenhouse gases have accumulated
in the atmosphere
at a record pace... The
slowdown is a bit of a mystery to climate scientists.