Sunday, May 27, 2007

Which of these weather stations would you trust?




One of my favorite websites is Steve McIntyre's climate audit.



This week he shows us two weather stations in California and the associated temperature readings that each has delivered over time. The stations are 60 miles apart.

Measuring temperatures on the sunny side of a building beside an asphalt parking lot where cars can pull up right beside the thermometer is not the same as measuring in an open grassy area, is it? Guess which station shows the warming trend? Anyone care to ponder whether rural data is more reliable? Yet the urban stations are numerically more and more prevalent in the calculation of the mythical 'global temperature'.

Enough said. I think the pictures speak for themselves.

1 comment:

Kobayashi Maru said...

If a picture is worth 1000 words, you just got across 4000. Nice illustration.