Climate Audit alerted me to the the Detroit Lakes, MN USHCN climate station of record.
Click on the picture to find out more about the surface station audit and to join in or the Climate Audit Link above to get a graph of the station's record. It ain't pretty.
Cross Posted at The Astute Bloggers
posted by Simon on 07.27.07 at 02:23 AM
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That is one of the difficulty of temperature and weather monitoring stations and sensor arrays: many were put down in the 1950-60's timeframe and increased suburbanization has encroached on them badly. Even just 10% of stations getting exhaust from HVAC or even just changing wind directions due to obstacles will start to throw off overall readings.
No one has really done a good cross-calibration of 19th century equipment with 21st century equipment to see just how valid the readings from that era were compared to modern equipment. In theory they should all be nice and cross-calibrated to standards. But the Theory and Practice Conundrum takes place with that...
I would assume that the NWS did that... but... when you start having stuff seen with some of the collection sensors getting nice brick structures put up to them or having suburban tree thinning or even channeling of winds due to buildings you really do begin to wonder if the overall temperature rise seen has anything to do with overall atmospheric temperature above the surface. So many nice theories put on the ideal that all the equipment measures the same as the previous generation... but does it?
A very interesting study will probably come from this.
That is one of the difficulty of temperature and weather monitoring stations and sensor arrays: many were put down in the 1950-60's timeframe and increased suburbanization has encroached on them badly. Even just 10% of stations getting exhaust from HVAC or even just changing wind directions due to obstacles will start to throw off overall readings.
No one has really done a good cross-calibration of 19th century equipment with 21st century equipment to see just how valid the readings from that era were compared to modern equipment. In theory they should all be nice and cross-calibrated to standards. But the Theory and Practice Conundrum takes place with that...
I would assume that the NWS did that... but... when you start having stuff seen with some of the collection sensors getting nice brick structures put up to them or having suburban tree thinning or even channeling of winds due to buildings you really do begin to wonder if the overall temperature rise seen has anything to do with overall atmospheric temperature above the surface. So many nice theories put on the ideal that all the equipment measures the same as the previous generation... but does it?
A very interesting study will probably come from this.