What Global Warming?

Update:  See new graphs at the end — no “cherry picking.”

October 13, 2012 ————

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I’m not a climate scientist – or any other kind of scientist, for that matter.

However, I can take a set of numbers and dates and create a graph from them in Excel.

The preceding graph represents monthly global temperature variations in °C from January 1997 through August 2012 – almost 16 years.

I produced the graph after seeing this one at the Daily Mail:

climate change

The following graph is from the same data source, except it is “decadally smoothed” – “filtered to remove variability on time scales of less than a decade.”

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This is the first time that I’ve actually plotted any of the data and I must say that I’m a bit surprised, especially with the second figure.

The dataset is part of the HadCRUT4 time series and comes from the UK Met Office Hadley Centre. It is available here.

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October 16, 2012

1850 to 2012 global temperature HadCRUT4 anomaly:

1900 to 2012 global temperature HadCRUT4 anomaly, “decadally smoothed” – “filtered to remove variability on time scales of less than a decade.”:

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