Red faces at NASA over climate-change blunder

Toronto Star ^ | 8/14/07 | DANIEL DALE

[lepton]

From the USHCRN manual:

The USCRN will use the classification scheme below to document the "meteorological measurements representativity" at each site.

This scheme, described by Michel Leroy (1998), is being used by Meteo-France to classify their network of approximately 550 stations. The classification ranges from 1 to 5 for each measured parameter. The errors for the different classes are estimated values.

Class 1 - Flat and horizontal ground surrounded by a clear surface with a slope below 1/3 (<19deg). Grass/low vegetation ground cover <10 centimeters high. Sensors located at least 100 meters from artificial heating or reflecting surfaces, such as buildings, concrete surfaces, and parking lots. Far from large bodies of water, except if it is representative of the area, and then located at least 100 meters away. No shading when the sun elevation >3 degrees.

Class 2 - Same as Class 1 with the following differences. Surrounding Vegetation <25 centimeters. Artificial heating sources within 30m. No shading for a sun elevation >5deg.

Class 3 (error 1C) - Same as Class 2, except no artificial heating sources within 10 meters.

Class 4 (error >= 2C) - Artificial heating sources <10 meters.

Class 5 (error >= 5C) - Temperature sensor located next to/above an artificial heating source, such a building, roof top, parking lot, or concrete surface."

[EBH]

Please tell everyone that ClimateAudit is now back up on its new faster server. If you still have a problem then please reset your DNS cache (under Windows, rebooting will do this)

Steve will also be interviewed for on BBC Radio 4’s Today programme sometime between 6 and 9 BST. The Today programme can be heard on the internet from this page (when its on) http://www.bbc.co.uk/radio4/ by clicking on “Listen Live” or via an archive of the programme on this page http://www.bbc.co.uk/radio4/today/ sometime after 9am BST. Please give feedback to Steve on CA after you’ve heard the interview.

John

[Robert A Cook PE]

So Class 3, 4, AND 5 are susceptible to outside local heat sources....

And here I thought that ALL recording stations could ONLY be Class 1 environment.