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Originally Posted by transplant99
The bolded doesnt make sense when this data is right in the study...no?
Back then, it said that the planet was warming at a rate of 0.2C every decade – a figure it claimed was in line with the forecasts made by computer climate models.
But the new report says the true figure since 1951 has been only 0.12C per decade – a rate far below even the lowest computer prediction. |
If you read the second link posted above it explains that:
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To be polite, I'll just say these statements are a huge misinterpretation of reality.
I went to the Assessment Report 4 (AR4), the document from 2007 he’s talking about. On page 12 of the Summary for Policymakers, it says this:
Since IPCC’s first report in 1990, assessed projections have suggested global average temperature increases between about 0.15°C and 0.3°C per decade for 1990 to 2005. This can now be compared with observed values of about 0.2°C per decade, strengthening confidence in near-term projections.
That’s where Rose gets that 0.2°C number. Ah, but note the time range: 1990-2005. That’s a sixteen year time span, and a recent one.
If you look at page 5 of that same report, you’ll also see this statement [emphasis mine]:
The linear warming trend over the last 50 years (0.13°C [0.10°C to 0.16°C] per decade) is nearly twice that for the last 100 years.
Note the time range here: It’s actually over 50 years, and starts far earlier than the time range quoted for the 0.2° rise per decade. We know the Earth is warming faster now than it was a century (or five decades ago), so comparing a recent 16-year span to one that’s 50 years long and much older is grossly inappropriate. It’s apples to oranges. And in the second statement it actually says flat out that the more recent 50 years have warmed far faster than the 50 before them.
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So basically the number has been .12 on average for the last 50 years and higher in more recent years, i.e. is getting worse