Archive for June, 2013

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)

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Joanne Nova Reads Science?

June 3, 2013

Joanne Nova seems to be a regular reader of Science Daily, and can Copy and Paste their entire article to create her own one.

Her recent post on CO2 and plants is a direct copy of Science Daily’s article.

Whilst the knowledge that observations are closing matching models, I suspect Nova wants you to ignore that message and instead jump to the conclusion that “More CO2 is good”.

Sadly, that isn’t the conclusion of the authors, they wanted to isolate the effect that CO2 is having.

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