Posts Tagged ‘Joanne Nova’

Ice Sea Ice Sea – And Repeat

October 21, 2013

Models (and history) project that Nova will likely post about near record Antarctica sea ice for the next few decades at least.

Climate Scientists don’t expect Antarctic to behave the same way as the Arctic. Here’s the projection for Antarctic Sea Ice with observations well within the bounds of model projections.

Antarctic Sea Ice Projection

Antarctic Sea Ice Projection. Source

Not only do the models not expect Antarctic Maximum Sea Ice Extent to drop away for several decades, there is also other science that indicates other factors greatly influence sea ice creation – it’s not just about temperatures as Nova wants you to believe.

Nova Cherry Picks Again

Strangely (or not given that Nova’s intent is to confuse you rather than educate you) Nova chooses a few selected years to compare against. The full set shows the maximum, whilst being close to a record, is really only remarkable for its late melt.

Antarctic Observations

Antarctic Observations

Poles Apart

Joanne talks about the media only showing one side of the argument – Ironic that she only gives half the picture. If you compare the images of the Antarctic and the Arctic, it’s obvious that the slight increase in Antarctic sea ice does not make up for the dramatic loss of ice in the Arctic.

Sept. 2013. The Antarctic has increased slightly but does not make up for the massive loss in Arctic ice. That contrast in 2012 was even more stark.

Sept. 2013. The Antarctic has increased slightly but does not make up for the massive loss in Arctic ice. That contrast in 2012 was even more stark. Source

DeJa Vu

Yes, we’ve been here before …

https://itsnotnova.wordpress.com/2012/09/20/arctic-vs-antarctic-ice/
https://itsnotnova.wordpress.com/2013/04/17/antarctica-joanne-nova-scratches-the-surface/
https://itsnotnova.wordpress.com/2012/10/12/psssst-ignore-the-artic-look-over-here-antarctic-sea-ice-again/

See you same time next year!

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Nova misleads on Scafetta’s cycle of mistakes

October 12, 2013

Joanne Nova leaps at the chance to blame the sun for the recent warming. In the process she shoots her own foot on the Medieval Warm Period, then shoves it in her mouth on Climate Sensitivity. Oh, and the paper is just another example of curve fitting crap.

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Fingers In Ears

September 3, 2013

With her digits firmly planted in her ears Joanne Nova pretends that AGW is not happening. The science says otherwise. Perhaps Jo is too busy with Tony “It’s crap” Abbott’s political campaign to write about the science, or perhaps it’s just because these climate science papers don’t agree with her preconceived, politically motivated, scientifically-unsupported, blogger opinion? Here’s a small sample of recent peer-reviewed science Joanne wants to wish away.

update: Nova has commented on this list saying “I can rebut most just from their headlines.” … but of course she doesn’t go any further than that and instead yet another person gets “moderated” when the topic becomes too much for Nova. Joanne repetitively points to her “Evidence”, a page which we’ve covered in detail https://itsnotnova.wordpress.com/nova-science/novas-evidence/ .

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Willie Soon, “I just don’t understand”

August 4, 2013

Joanne Nova blindly promotes Willies Soon’s criticism of Sea Level measurements. It’s strangely titled “Five or more failed experiments in measuring Global Sea Level: Willie Soon” – does Willie get confused by numbers greater than five?

Willie “I don’t understand” Soon introduces himself to the audience with “Many of you are as qualified as I am to speak on this issue of sea level”. For the record, Soon has ZERO publications on the topic of Sea Level Rise, so it’s quite possible that some of his audience are better qualified. His claims that all the science is wrong stems from his own lack of understanding; Anything Willie cannot understand must therefore be, in his opinion, “bad science” rather than an inability to understand on his behalf. Personally I don’t fully understand Einstein’s theory of relativity, but I won’t call that science “sick”, a term Willie uses to describe things he can’t explain.

Willie’s opinion on the topic of sea level rise does not coming from having performed science, does not originate from understanding the technology behind the measurements, doesn’t come from performing any kind of statistical analysis but instead comes from, and I quote, “Over Christmas I happen to ah, all the dots and everything fall into places”.

Willie makes many off-hand remarks about scientists chasing funding, ironic given his own history of funding from the fossil fuel industry. (more from Desmog), But let’s examine his claims in further detail … (more…)

Nova – not Hot, not Angry, not Surface Temps

June 29, 2013

Joanne Nova still seems bitter about the fact that Australia had its HOTTEST EVER SUMMER and has tried once again to discredit the temperature record after climate scientists found that humans are increasing the chances of such an event. Nova is repeating an earlier myth so her mistake also repeated (learning can be difficult for some climate denialists).

The UAH temperatures she plots in the graph are atmospheric temperatures, which is not going to be the same as surface temperatures (I am also dubious about how they restrict UAH temperatures to just Australia land). Surface temperatures, as measured by the BOM and reported to the public on a daily basis are NOT the same as the temperature of the atmosphere. This is demonstrated clearly in the graph below.

Over short timeframes, surface temps and atmospheric temps can have large differences.

Over short timeframes, surface temps and atmospheric temps can have large differences. (source)

Since 1979, all surface and atmospheric temperatures show very similar trends.

Since 1979, all surface and atmospheric temperatures show very similar trends. (source)

Science vs Joanne Nova

April 25, 2013

The posts of Joanne Nova that have been rebutted are tracked here on this page, but thought it might be a good time to reflect. I believe I’ve covered all major pieces of science in Nova’s archives but if there’s anything else you like rebutted (of scientific nature) please reply and I’ll endeavour to explore her “science”. The posts I have so far covered are listed below …

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Statistical Significance – The Simple One

March 15, 2013

Joanne Nova recently branched out of her comfort zone (spreading doubt) to try her hand at statistics claiming that surface temperature data since 2005 shows statistically significant cooling in 4 of 5 datasets.

Her words …

The cooling for the last eight years is statistically significant in 4 of the 5 major air temperature datasets.

Statistically significance is very rarely found on such short timeframes, so how did Nova manage to find it? Simple! She invented her own concept of statistically significance; “The easy one” as she put it.

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Oh, that Heatwave? It could be Aliens!

January 28, 2013

Nova repeats her strawman argument that the recent heatwave is not a sign of global warming.

Climate Scientists go to pains these days to explain that you cannot attribute one weather extreme on global warming, but you will see a higher number of heatwaves as the background climate becomes hotter.

In Australia, we are now breaking hot records three times more often than cold records. It’s simply more likely for heatwave, such as the January one to occur.

Nova doesn’t get math, so instead rambles out 8 “Nova reasons” why the recent heatwave is not because of global warming.

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Nova Lacks Evidence

January 1, 2013

Joanne Nova claims that Global Warming has been disproved and lists 9 “Major Flaws” – or so she says.

  1. The missing heat is not in the ocean.
  2. Satellites show a warmer Earth is releasing extra energy to space.
  3. The models get core assumptions wrong – the hot spot is missing.
  4. Clouds cool the planet as it warms.
  5. The models are wrong on a local, regional, or continental scale.
  6. Eight different methods suggest a climate sensitivity of 0.4°C.
  7. Has CO2 warmed the planet at all in the last 50 years? It’s harder to tell than you think.
  8. Even if we assume it’s warmed since 1979, and assume that it was all CO2, if so, feedbacks are zero — disaster averted.
  9. It was as warm or warmer 1000 years ago. Models can’t explain that. It wasn’t CO2.  The models can’t predict past episodes of warming, so why would they predict future ones?

It’s the usual stuff from Nova, so lets take a quick look at why Nova is wrong on all nine points.

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Sea Level Rise – A global conspiracy unfolds – or not

December 11, 2012

Science should be unbiased and supported by the evidence alone, devoid of all politics. The source of Nils-Axel Mörner’s latest self-published “paper” is the “Centre for Democracy and Independence“. The aim is clear; a politically motived piece attempting to discredit sea level rise.

For sea level NOT to be rising would require that the ocean is NOT warming, that glaciers are NOT melting, that subsequent data from Jason1 & Jason2 satellites are also being tampered with, gravity data from Grace is also being modified, along with hundreds of tidal gauges all in a concerted effort to fool people. This is either a conspiracy bigger than anythig this planet has seen before, or it’s complete utter bullshit.

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