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De Omnibus Dubitandum - Lux Veritas

Tuesday, July 8, 2014

The Latest From Jo Nova!

I've been told off for not sending more emails. Sorry, I don't like to impose. The big roll out has continued, and today we release the new solar model in all its naked code and glory.


Thanks for your patience. The full model has just been released, containing some 44 datasets, 33 sheets, 90+graphs, and 15,000 lines of code. (It's never finished!)

It's an excel sheet.  Hopefully easier to get more eyes and brains on the project. Download the 20Mb file and see the details on the post link here.

This big piece of work is offered freely to the world. Thanks to everyone who has helped make it possible. We really do appreciate your donations and support!  Read on


There was a large drop in the trend of total solar irradiation around 2004. We found that there is a delay of one sunspot cycle, about 11 years on average, between changes in trends in solar radiation and the corresponding change in temperature. That means things could cool in about 2015 (= 2004 + 11), but because this solar cycle is a bit longer, the cooling is more likely to start in 2017 (= 2004 + 13). Models based on CO2 predict warming, but the solar-driven-model points sharply down. We'll hopefully know in a few years whether the notch-delay solar theory is right. Unlike the IPCC models, this one is falsifiable.

It's a brave man who tries to predict the weather. We are just following the  data (as flawed as it is). Will the sun stay quiet? Will the world cool? Read on


The model gets the biggest test we can give it at the moment, and you can see here how well you think it "predicts" the last 200 odd years. The fit is really very reasonable, though there is a divergence in the 1960's and 70s when the model predicts the world should have warmed but it didn't.

There are likely several reasons why the world could have cooled then instead of warming, but the surprise in the model is that the data that seems to explain it the best were the atmospheric bomb tests. We'll be saying more about this soon. It seems so improbable, but we have the references for studies which suggest that the 503 bombs with an extraordinary 440Mt total yield would definitely have a significant cooling effect. The big question is "how much". David has marked the contributing factors, as the models "sees" it on every graph. Nothing is hidden. Read on

Because this is such a large and controversial work it's treading on a few toes, and generating quite the storm. A few people have stepped in the public debate before they were ready. This is unfortunate, and clearing up those details has taken some time, but the whole debate and links to critics are available from my site.


In comments on Watts Up, Leif Svalgaard and Willis Eschenbach misread a graph and a strange Bermuda Triangle moment occurred, where a silly idea grew legs. So just in case there is anyone out there who thought for a moment that data was "Falsified" or "almost fraud", we nail that idea to the wall here. Everything was described on the graph. If only people read more carefully. Read on


We debunk more strange ideas. Leif Svalgaard didn't realize there was a fall in 11-year smoothed TSI data around 2003. We graphed his very own solar data to show it's there too. Could it be that few people have noticed the sharp downturn in 11-year smoothed solar trends? Read on


Some people have suggested that the Notch filter doesn't mean anything because the transfer function would still find a notch even if the temperature data was just white noise. This is true, but meaningless. Any maths function can find a relationship with two unrelated things. What matters are the assumptions you make and the questions you are trying to ask. We show that the transfer function applies if, and only if, there is some causal link between total solar irradiance and the temperature of the Earth. That seems like a pretty safe bet to us. Read on


Look, it's a big paper. Lubos missed the central concept, and didn't read on, nor did he notice David specifically explained his mistake in an email 3 months ago. We appreciate feedback, but wish people would read more carefully. We reply to all his points here. Read on

Cheers from Jo

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