Although urban heat islands are undeniable, many CO2 advocates argue that growing urbanization has not contributed to recent climate trends because both urban and rural communities have experienced
similar warming trends.
If you looked at other periods in a computer run with
similar warming trends would they all have the same spatial pattern as the one you investigated, is it possible that some might more closely resemble the spatial pattern of the observed data?
Also, both the CRU and GISS data show
a similar warming trend of 0.6 C / century.
We show that the Antarctic stratospheric warming has close correlations with sea surface temperature (SST) increases, and that general circulation model simulations forced with observed time - varying SSTs reproduce
similar warming trend patterns in the Antarctic stratosphere.
Not exact matches
That was unexpectedly close to the 0.09 C
warming trend found when
similar research was published in 1994 with only 15 years of data, said Dr. John Christy, director of UAH's Earth System Science Center.
I often see the
warming trend of the last few decades explained away as «It's the PDO» or something
similar.
A linear
trend fit to the annual mean anomalies the last 17 years suggest
similar warming rates as reported by Grant Foster and Stefan Rahmstorf.
«Note that the change in spread shouldn't be automatically equated with a change in climate variability, since a
similar pattern would be seen as a result of regionally specific
warming trends with constant local variability»
Demonstrate that
warming in the past tells us that
warming will continue into the future, despite the fact that a very
similar trend in the opposite direction during the middle of the 20th century convinced so many that we were headed for another ice age.
The basic picture is the same — 2008 is a cool anomaly on the back of a
warming trend and is very analogous to
similar cool anomalies that occur in the models at random intervals.
What if history repeats itself and the
warming trend we currently have will be followed by a cooling period
similar to what is known as the «little ice age»?
We see a global
warming trend that is very
similar to that previously reported by the other groups.
The 10 Earth System Models used here project
similar trends in ocean
warming, acidification, deoxygenation and reduced primary productivity for each of the IPCC's representative concentration parthways (RCP) over the 21st century.
Our increased understanding of
trend uncertainty aloft means that we can no longer dismiss
warming aloft of
similar or greater magnitude than at the surface over the satellite record.
2 — For future planning, it is more likely the world will be
warmer rather than colder even if you exclude potential human - caused forcing (i.e. based on a continuation of the current overall
trend, which has been broadly
similar for a couple of centuries).
Ian Blanchard writes» — For future planning, it is more likely the world will be
warmer rather than colder even if you exclude potential human - caused forcing (i.e. based on a continuation of the current overall
trend, which has been broadly
similar for a couple of centuries).»
Muller testified before congress on March 31, 2011 where he released preliminary results showing «a global
warming trend that is very
similar to that previously reported by the other groups [NOAA, NASA, and the Hadley Center Climate Research Unit (CRU) s].»
If the rural
trends of Figures 11 and 12 are representative of global
trends, then this indicates that the 1980s - 2000s «global
warming» was balanced by a
similar period of «global cooling» in the decades before that.
Sorry paper gets a bit fat ZERO due this statement (below) obviously forced on anyone trying to get something worthwhile published in that garbage Journal NATURE «though
similar decadal hiatus events may occur in the future, the multi-decadal
warming trend is very likely to continue with greenhouse gas increase.»
P.S. «Although
similar decadal hiatus events may occur in the future, the multi-decadal
warming trend is very likely to continue with greenhouse gas increase.»
Or is the recent
warming trend of 0.2 deg C per decade for the period 1970 - 2000 is just the
warming phase of the multidecadal oscillation
similar to that for the period 1910 - 1940?
A
similar cooling
trend was reported in the 1993 paper, «Absence of Evidence for Greenhouse
Warming over the Arctic Ocean in the Past 40 years».
Guest poster Jens Raunsø Jensen on WUWT created a very
similar graphic to Figure 1, trying to argue that global
warming can be modeled with step functions rather than a linear
trend.
Does the person who says were just seeing a natural
trend here
similar to past ice ages and
warming trends.....
Unlike the continental U.S., with its abundance of micro and regional climates, the small island area of Great Britain affords less climate variety yet produces
similar warming / cooling
trends over the recent past.
Short term ups and downs in TLT (and also in surface temperatures) have been common historically during the past century's
warming trend, and current temperature behavior has been
similar in this regard.
The subset of records (14 stations) extending back to the early 1960s suggests that the recent
warming trends were preceded by
similar widespread cooling
trends.
As Chris Ho - Stuart has pointed out below the divergences between the various temperature datasets in the past decade or so are as large as the divergence in the SST dataset that would be required to explain the two features that have given rise to the apparently
similar length
warming trend of 1910 - 1940.
Similar to the remaining
warming trend in Foster and Rahmstorf (2011) after the short - term noise was filtered out, Lean and Rind found a very steady human - caused global
warming trend from 1979 to 2005 (Figure 2d, green line), having contributed to more
warming than has been observed over that period.
See also global surface temperatures ca. 1940 when there was a
similar «plateau» within an overall
trend of
warming.
The histograms all show
similar average
warming trends and the stations with the longest measurement durations show the least dispersion of temperature
trends.
Similar to Tamino's results, Clear Climate Code found that the dropped weather stations show a greater
warming trend than the kept weather stations.
Yet, as this charts reveals, the per century
warming trends are remarkably
similar with the fastest
warming acceleration happening in the earlier period.
I often see the
warming trend of the last few decades explained away as «It's the PDO» or something
similar.
Basil Newmerzhycky: I won't bore you with the «2014 will be
warmest year of all» hype, but it is almost certain, and with a greater likelihood of an accelerated
warming trend well into the next decade at twice the rate of the previous one,
similar to the 0.2 deg C.
One shows a statistically significant
warming (at more than 90 % probability) very
similar in magnitude to the surface temperature
trends, the other one doesn't.
Instead, however, Professor Muller reported that his groupâ $ ™ s preliminary results find a global
warming trend â $ œvery
similar to that reported by the prior groups.â $
Meanwhile, Global
Warming's Six Americas, an ongoing joint project of Yale University and George Mason University, reported a
similar trend from its own survey of 1,000 people.
In the middle Miocene (~ 18 - 12 Ma), major climate change
trends appear to be coupled to pCO2 changes; however, in the late Miocene (~ 12 - 5 Ma), climate was
warmer than today even while pCO2 was
similar to today, indicating a decoupling between long - term climate evolution and pCO2 change.
Andrew Bolt in Australia has a
similar fair question, which seems to be nearly impossible for the Australian alarmists who created the New Zealdn
warming trend to answer:
«The most important thing is that it shows that the rate of migration is lower than recent and anticipated
warming,» said Dr. Oechel, «and it implies that if there's a continual
trend at a rate
similar to this, species won't be able to keep up with their new thermal zones as they move higher and higher.»
a BP, when Salix arctica, which is considered a warmth - loving plant, had a maximum,» that (3) «comparisons with Holocene records from East and North Greenland show
similar immigration histories and
similar trends, with the Little Ice Age as the coldest period during the Holocene, culminating about 150 years ago,» and that (4) «subsequent
warming does not indicate environmental conditions comparable to the HTM yet at this stage.»
=== > that's equal to a 96 °C per century
warming trend if NASA continues with a pattern of
similar «corrections.»
Flaws and unwarranted adjustments to old data in US records have doubled the
warming trend there, and
similar flaws show up in New Zealand, Australian, Dutch and Icelandic records, and seem to constitute the entire
trend in some of these areas (in the raw data there is no
trend at all).
This is also the case over Australia, where
warming trends since 1979 are very
similar for satellite and surface data.
For example, they pointed to additional temperature data gathered in the last few years, which have been substantially
warmer than any
similar string of years in many centuries; to improvements in computer models designed to project future
trends; and to better understanding of the influence of other climate - influencing emissions, like particles of sulfates that can cool the earth by reflecting sunlight back into space.
Flaws and unwarranted adjustments to old data in US records have doubled the
warming trend there, and
similar flaws show up in New Zealand, Australian, Dutch and Icelandic records, and seem to constitute the entire
trend in these areas (in the raw data these are not
Instead of the proposed positive feedback producing ever faster atmospheric temperature increases, the plot reveals a very strong
warming trend that accelerated during the 2015/16 El Nino phenomenon, which then quickly decelerated to a per century
trend of 4.3 degrees Celsius - and, in the recent past,
similar deceleration patterns have lead to outright negative per century cooling
trends.
It's something like moderately good news, in that the aerosol reduction & solar brightening are temporary in nature, and once adjusted to the new conditions, temperatures will continue to rise in Europe at a more modest rate of +0.2 C per decade,
similar to the global
warming trend.
A
warming trend stilled the icers and Mother Nature now beckons believers in global
warming (original definition) to a
similar comeuppance.