"The amazing finding of the present study is that we do not observe global warming in the period 1982-2006, but significant cooling."
Source: Andries Rosema, Steven Foppes, Joost van der Woerd
Surface temperature as in 'temperature of the surface' is not what is routinely measured or referred to in meteorology. Surface temperature in meteorological observations usually refers to air temperature close to the ground, usually around 5 feet (1.25 to 2.0 metres) above the surface - the height at which weather stations are meant to take this measurement.
But what of the actual surface temperature? This is tricky to measure given the wide variety of surfaces, and the lack of any convention as to depth. But a geostationary satellite can take a broad view, in the case of Meteosat this mainly has a 5km resolution for temperature estimates. Looking down from above, that level of coarseness will help reduce the variation that would be expected at finer scales.
In their study published this year in the journal Energy & Environment, the three authors report how they took 25 years worth of satellite imagery from Meteosat from noon and midnight each day, and extracted estimates of surface temperatures from them. They used infra-red wavelengths for which the atmosphere is largely transparent in cloudless skies. But of course, there is always cloud to be seen in any hemisphere image. Their method to reduce the effect of clouds was to look at successive time periods (of 10, 20, and 30 days) and choose the highest temperature found (the 'brightest pixel') within each period. The hope is that that is likely to be from a relatively cloud-free day since cloud tops are much cooler than the surface.
There are other adjustment and computations to be made as described in the paper, but the authors seem reasonably confident that their results are sensible. They provide subsets of their data plotted as time-series for typical and atypical locations, and find the results plausible in each case.
There are no equivalent ground-based measurements to provide a cross-check for these results, but perhaps it may be possible to construct estimates of what they might be for simpler locations, e.g. sea areas.
These results will hopefully be subjected to considerable scrutiny and review, but I report them here at this stage simply as an illustration of 'unsettled science'. We have here results which on the face of it contradict the claims of relentless warming pushed by such as James Hansen in the late 1980s, including at the infamous hearing of 1988 in Washington. So many people have subsequently picked up on such claims and treated them as gospel that we are today in a very unsatisfactory position of having zealots for alarm poisoning discourse in this area, be it political or be it scientific discourse. Good teaching should help pupils step back from this unedifying spectacle, and form calmer and more considered opinions of what is going on.
Hat-tip: Greenie Watch which provides a link to this article on the above paper.
Note added a few hours after posting Some recent comments on this paper can be found here: http://objectivistindividualist.blogspot.co.uk/2013/08/earth-surface-cooled-from-1982-to-2006.html
Note added 09 August 2013 Project for the reader. The site CO2 Science provides a temperature plotter which can be used to look at temperatures attributed to zones 5deg (lat, long) on the side. It might be interesting to see how these computed mean surface air temperatures plots compare with those for specific locations provided in the paper over the same time periods.
Unfortunately, some misuse science. Some of their intentions, are far from benevolent. They see science as a mechanism for political power and control. There is great danger from those who would use science for political control over us.
How do they do this? They instill, and then continuously magnify, fear. Fear is the most effective instrument of totalitarian control.
Chet Richards, physicist,
https://www.americanthinker.com/articles/2021/03/science_in_an_age_of_fear.html
Wednesday, 7 August 2013
Tuesday, 6 August 2013
Ten-minute trainer: a case against the establishment case for alarm over CO2
For teachers with 30 minutes to spare, and a suitable class (perhaps one whose important exams in this area have been completed successfully), here is a brief YouTube clip which does a cool, calm, and collected job of undermining the case for alarm over CO2 - a case which may be taken for granted in your curricula. He is particularly critical of the 'positive feedbacks' which are a crucial part of the case for alarm:
This is a short video of about 13 minutes (no 10-minute trainer takes exactly 10 minutes!) linked to at the NoTricksZone which notes it was linked to in a tweet by Tallbloke.
The video is the work of David Evans in Australia. More details of his case can be found here:
(2) The first graphic in the short video shows ‘observed temperature increase’ as the output of models. If it was in fact the observed temperature increase, then the models would be doing a perfect job on them. Actually the output of models is ‘expected temperatures’, or 'predicted temperatures'. When these are compared with observed temperatures, the discrepancies are obvious.
This is a short video of about 13 minutes (no 10-minute trainer takes exactly 10 minutes!) linked to at the NoTricksZone which notes it was linked to in a tweet by Tallbloke.
The video is the work of David Evans in Australia. More details of his case can be found here:
and he has also produced some very good, but longer videos here: http://joannenova.com.au/2012/04/david-evans-explains-the-skeptics-case-youtube/
Some minor points.
(1) The
claim that positive water-vapour driven feedback is ‘assumed’ in the models is not quite correct. What they assume is that
global relative humidity stays constant as temperature rises. This necessarily means water vapour levels
will increase in the models, and this is what is believed to lead to the
positive feedback that appears in them. In practice, there is some evidence that relative humidity has been decreasing in recent decades.
Source: http://www.climate4you.com/
(2) The first graphic in the short video shows ‘observed temperature increase’ as the output of models. If it was in fact the observed temperature increase, then the models would be doing a perfect job on them. Actually the output of models is ‘expected temperatures’, or 'predicted temperatures'. When these are compared with observed temperatures, the discrepancies are obvious.
Sunday, 21 July 2013
Towards a Calmer Curriculum on Climate: some human impact possible on global warming, but too small to identify with assurance
"My overall view of the influence of humans on climate is
that we probably are having some influence, but it is impossible to know with
any level of certainty how much influence. The difficulty in determining the
human influence on climate arises from several sources:
(1) weather and climate vary naturally, and
by amounts that are not currently being exceeded;
(2) global warming theory is
just that – based upon theory; and
(3) there is no unique fingerprint of human caused global
warming.
My belief that some
portion of recent warming is due to humans is based upon my faith in at least some portion of the theory: that the human
contribution to atmospheric greenhouse gas concentrations has resulted in an estimated
1% reduction in the Earth’s ability to cool to outer space, and so some level of warming
can be expected to occur from that change
Exactly how much warming will occur, however, depends upon
something we call “climate sensitivity” (Spencer & Braswell, 2010; 2011),
and relatively few researchers in the world – probably not much more than a dozen – have
researched how sensitive today’s climate system is based upon actual
measurements. This is why popular surveys of climate scientists and their
beliefs regarding global warming have little meaning: very few of them have
actually worked on the details involved in determining exactly how much warming
might result from anthropogenic greenhouse gas emissions.
Our most recent peer-reviewed paper on this subject, Spencer
& Braswell (2013), has arrived at a climate sensitivity of only 1.3 deg. C for
a doubling of atmospheric carbon dioxide, based upon a variety of global
measurements, including warming of the global oceans since the 1950s. This
level of warming is below the lower limit of 1.5 deg. C minimum predicted in
the last (AR4) IPCC report. It is also in line with (an admitted minority of) other estimates of low climate sensitivity
published in the peer review literature.
It should also be noted that the fact that I believe at
least some of recent warming is human-caused places me in the 97% of researchers recently
claimed to support the global warming consensus (actually, it’s 97% of the published
papers, Cook et al., 2013). The 97% statement is therefore rather innocuous,
since it probably includes all of the global warming “skeptics” I know of who are actively working in the
field. Skeptics generally are skeptical of the view that recent warming is all
human-caused, and/or that it is of a sufficient magnitude to warrant immediate action given the
cost of energy policies to the poor. They do not claim humans have no impact on climate
whatsoever."
Extract from the testimony made by Roy W. Spencer on 18th July 2013 to the Environment and Public Works Committee of the US Senate.
His statement includes this description of his relevant background: "I have been performing U.S. government-sponsored research for the last twentyeight years, publishing peer reviewed papers on global temperature monitoring with satellites, on the amount of warming we might expect from greenhouse gas emissions, how to monitor hurricane strength from satellites, and quantitatively explaining ocean heat content changes.
Prior to my current position as a principal research scientist at the University of Alabama in Huntsville, I was Senior Scientist for Climate Studies at NASA’s Marshall Space Flight Center. I am also the U.S. Science Team Leader for the Advanced Microwave Scanning Radiometer-E flying on NASA’s Earth-observation satellite Aqua. I am a recipient of NASA’s Medal for Exceptional Scientific Achievement."
Sunday, 30 June 2013
Climate-Related Hazards: time to warn your nearest and dearest about irresponsible adults howling at the moon over carbon dioxide and climate
If you are
not careful, you can pick up foolish ideas in the same way as you can
catch the flu – simply by contact with
someone already afflicted. No thinking
is required on your part, no analysis, no checking things out for yourself –
you just acquire the opinion along with some superficial support for it. Thus you decide that CO2 emissions must be
dramatically reduced because CO2 is a greenhouse gas that is ‘trapping’ heat in
the atmosphere. Suitably debilitated by
this, you are vulnerable to secondary infections such as the facile attribution
of any or all bad weather to ‘climate change’, and you are already using those
two words not as a platitude (since climate has always changed) but as
shorthand for ‘catastrophic anthropogenic global warming’ (cagw).
This commitment to giving CO2 a driving role in the climate system has not been a success as far the public is concerned, since the warm-bias this has given their seasonal predictions has been seriously misleading both for winters which turned out to be colder and snowier than we were told to expect, or summers which turned out to be cooler and wetter.
In some
cases, the afflicted ones feel driven to share, or spread, their troubles with
others and take to campaigning and lobbying.
It seems that the condition is aggravated if all the people around you don’t
suffer from it, or if you learn of large groups who seem to have some kind of
immunity.
In the
worst cases, there emerges an evangelical zeal reminiscent of religious zealots
who have achieved a state in which all contrarian appeals to reason are shrugged off as
the work of the devil. In the climate-related cults, fossil-fuel
companies are seen as the source of much evil, and are held to be providing colossal
levels of funding to help devils pursue their wicked ways. No one has yet found any evidence of this,
but of course that goes to show just how clever Big Coal etc have been.
One High Temple and One Cheerleader for Alarm
Source |
One of the
high temples of climate alarm has been the UK Meteorological Office, led as it
has been by such as John Houghton (a key schemer in the IPCC), and Robert Napier (a man who helped lead the WWF and other bodies into climate-alarm evangelism ).
A few days
ago, an anonymous (sad to say) commenter called 'ntropyalwayswins' on one of their web sites urged the MetOffice to get back to concentrating on weather forecasts:
The Met Office should stick to what it is good at
– namely forecasting the weather and should only do this for a period of time
where forecasts can be relied upon. To issue a longer term forecast that
suggests 30% hot 30% cold 40% somewhere in between is really not very useful
and invites ridicule.
You need to continue to rein back heavily on your
embarrassingly overconfident statements on climate. Recent announcements from
the MO indicate that at long last you are admitting that you do not understand
natural variability. Until you do it is ok to answer all questions about the
future climate of Britain
and the world with a simple ‘We do not know’
As your false confidence has already caused
immeasurable harm to the citizens and economy of the UK you should issue a
statement encouraging the UK government to disregard all prior climate advice
from the MO and, lest they do not have the good sense themselves to see the
implications thereof, suggest that they may need to re-assess the need for the
Climate Change Act which the rest of the world rightly sees as the Economic
Suicide Act.
Plus it would do no harm to issue a public
apology for getting it consistently wrong. That is the grown-up thing to do.
In the States, the American Geophysical Union (AGU) has
emerged as a major cheerleader for climate alarm, choosing a decidedly non-geophysical Chris Mooney to be
one of their directors for a while – he is a graduate in English who has spotted
climate agitation as a means of furthering his left-wing views,
and appointing to lead their Ethics Committee, of all things, a Peter Gleick who shortly
thereafter resigned in disgrace after displaying decidely unethical behaviour to further his own crusade for more alarm. A podcast interview on this with the president of the AGU during that unhappy time is available on David Appell's blog, an interview in which this president reveals himself as also being afflicted with climate alarm (‘the evidence is pretty
much incontrovertible’).
Source |
The new president seems also to be a victim. The picture shows her speaking at one of their conferences. A conference about which the physicist Norman Rogers has written a scathing report, extracts from which follow:
"What they are doing is howling at the moon
that the sky is falling. The president of the AGU, Carol Finn, who,
incidentally, is employed by the federal government, opened the
lobbying/communications workshop on the first day of the conference with this:
'AGU's
mission is to promote discovery ... for the benefit of humanity[.] ... I live
in Colorado[.]
... [L]ast week's Black Forest fire ... was the worst wildfire in Colorado's history[.]
... I live in Boulder
County[.] ... [T]he
county and the city of Longmont
have just outlawed fracking[.] ... [A]ll these communities need to be able to
try to figure out how to balance energy development and putting drill rigs next
to schools[.]'
The subtext here, repeated over and over at
the conference, is that global warming causes forest fires and that hydrocarbon
development is undesirable, if not dangerous. But perhaps forest fires
are started by matches. Maybe hydrocarbon development is preferable to
riding around on horses.
How trustworthy is an organization that
claims to be organized for the "benefit of humanity," anyway?
The illogical thinking and ever-changing
stories about global warming doom are puzzling. What motivates the global
warming proselytizers? Is there a root belief that explains their behavior?
My suggestion is that their behavior is religious in nature and can be explained if we postulate that they
believe in the following commandment:
Thou shalt not add carbon dioxide to the
atmosphere.
If you realize that the story is not really
about global warming, but rather about changing the composition of the
atmosphere, it becomes easy to understand why the believers are not disturbed
by the fact that global warming, as measured by surface temperature, stopped 16
years ago. They easily find other scientific theories to buttress
their faith. They ignore or discredit any science that challenges their
faith. They tell us that if we don't stop adding carbon dioxide to the
air, we will have extreme
weather and the oceans will become acidified.
The polar bears will die. The wine
will lose its flavor. We will catch exotic
diseases. If one theory of doom is refuted, or becomes boring, there
are plenty of others to take its place. Embarrassing information, such as
the fact that adding carbon dioxide to the atmosphere makes plants
grow faster, with less water, is dismissed.
They say plants grow faster, but they are less nutritious, or they grow faster,
but they deplete the soil of its nutrients.
What we have is an obsession with the evil of
carbon dioxide -- a carbon cult.
The great majority of people who are members
of the AGU are interested in science, not in a new religion centered on
carbon. They have not woken up to the fact that their organization has
been infiltrated by a carbon cult." ...
... "The attendees were told to explain why the
weather would be more extreme by comparing carbon dioxide to steroids. If an athlete takes steroids, he will
still play the game, but his performance will be more extreme.
One difference between a cult and a legitimate religion is
that the cults usually hide their true nature. The more bizarre the cult,
the greater the imperative to hide its doctrines. The general public must
not be allowed to realize that the advocates of global warming alarmism are in
reality making up the story to propagate a fanatical faith that carbon dioxide
is bad.
The science behind global warming is very
shoddy. Yes, there is a nugget of real science buried in all the
alarmist, made-up stuff. Carbon dioxide does absorb infrared radiation,
and increased carbon dioxide probably will warm the Earth by a small
amount. The mechanism is quite complicated, involving the atmospheric
lapse rate and a slight relocation of the tropopause.
The complicated and jargon-laden science is
reduced, by the missionaries of the carbon cult, for public consumption, to
"carbon dioxide is a heat-trapping gas." The formal predictions
of global warming from the United Nations Intergovernmental Panel on Climate
Change are the product of an opinion poll of computer models that disagree with
each other and that have been manipulated to make them look better than they
really are. The carbon cultists accept those predications as serious and
profound scientific truth, because the predictions provide support for their
faith."
----------------------------------------------
So, how
are we to warn our nearest and dearest about these people who are seized with an urge to
scare the wits out of us? I do not have any new ideas for this. Until the
Fabled Fossil Fuel Funds or something like them are located, and there is not
the slightest sign of them even existing, it will have to be through low-cost
means. Fortunately we still have the Internet
for the fast sharing of thoughts, and to take part in discussions to test and
sharpen our criticisms of the harmful zealotry of climate alarm. There are books which contain the bigger picture, including at least one specifically aimed at helping parents talk with their children about climate and other eco-scares. We can all help those nearest to us to listen
more calmly to the panic-stricken calls for more alarm and more radical actions
on CO2, and help them get these calls into perspective. From there, the word will surely spread
through the mass media and into the political class, where there are already
leaders of this school of thought writing and campaigning. Eventually, even state-controlled schools will surely want to be less welcoming to alarmists, and to be vigorously pro-active at helping their pupils handle their insidious views and methods.
Friday, 28 June 2013
Climate Teachers: if your pupils watch TV in the USA, this is what you are up against
Networks Do 92 Climate Change Stories; Fail to Mention ‘Lull’ in Warming All 92 Times
Extracts from article by Julia A. Seymour
- Recent years’ slowdown in global warming completely ignored by networks 92 climate change stories in 2013.
- Stories citing experts or the latest studies promoting alarmism get covered more than 8 times as often as critical experts and studies.
- Although many scientists say no, ABC, CBS and NBC continue to link weather events like tornadoes, hurricanes, heat waves and more to climate change nearly one-fourth of the time. "
...
"Just since Jan. 1, 2013, ABC, CBS and NBC morning and evening news programs have aired 92 stories about “climate change” or “global warming.” Not a single one of those stories mentioned the “warming plateau” reported even by The New York Times on June 10. The Times wrote, “The rise in the surface temperature of earth has been markedly slower over the last 15 years than in the 20 years before that. And that lull in warming has occurred even as greenhouse gases have accumulated in the atmosphere at a record pace.” Even though the Times piece wasn't published until June 10, a warming slowdown had been reported by foreign media outlets in November 2012, and by The Economist online in March, Reuters in April and BBC online in May of 2013."
...
8 Times the Alarmism
"New
reports, studies or scientists that warned of the threat of climate
change from concern over penguin populations, to predictions of sea
level rise continued to be promoted by the networks in 2013. There were
stories or news briefs warning that flying would become more turbulent
because of climate change, connecting allergies to global warming, and
others worrying about glacial melt and sea level rise.
There
were 25 networks reports that mentioned a new report or analysis or
that cited a scientist who promoted the climate alarmist viewpoint. That
was 8 times as many as the other side; there were only three stories
that cited a report or included such a scientist challenging alarmism.
The networks consulted scientists from NASA and NOAA as well as activists like Michael Oppenheimer from Princeton, who has gotten climate predictions
wrong in the past. “Nightly News” interviewed Kenneth Kunkel from
NOAA’s National Climatic Data Center on May 25 who continued the hype,
saying “If we continue to increase atmospheric concentrations of
greenhouse gases in the atmosphere, we will warm the globe and that will
bring certain risks into play or increase the risks of certain types of
extremes.”
...
...
In spite of science, networks continue to link weather to climate
"Weather
events that did a lot of damage and claimed lives, like the recent
Oklahoma tornado and last year’s “Superstorm Sandy” were cited as
incontrovertible proof of climate change. Scientists who argued
otherwise were left out of the broadcasts. Even snowfall, wildfires and
droughts were mentioned in some reports as examples of what one reporter
called “globalweirding.”
On Jan. 8, NBC “Nightly News”
anchor Brian Williams mentioned a new report on the cost of extreme
weather saying “natural disasters caused a total of $160 billion damage
around the world in 2012 ... These new numbers coincide with a new
official look at just how hot our past year was.” Anne Thompson followed
up his introduction by linking the “year of extreme weather” to “nature
and man made climate change.”
Meteorologist Joe Bastardi has vehemently opposed such connections and told Forbes.com columnist Larry Bell,
“The fact is that those alarmist claims [about weather getting more
extreme because of man made climate change] simply aren’t true.”
Source
Note added 29 June 2013: Here are some more links to recently published articles on this topic:
PBS NewsHour global warming coverage: IPCC/NOAA Scientists – 18; Skeptic Scientists – 0
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