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NOTE: To get off this list, send email to majordomo@aqua.ccwr.ac.za with the body of the message containing the line: unsubscribe sowacs Sowacsers NOAA is planning a national climate monitoring network with 250 station throughout the US. We will be able to install soil moisture and temperature sensors that will operate automatically and should work for many years. Please send me advice on what type of sensor to use. Obviously, gravimetric obs would be best, but this is too expensive. My experience with thermal dissipation sensor data now being used at the Oklahoma Mesonet is that it is difficult to get them to work well in all soils. What would be the best to use for a long-term climate monitoring network, measuring the top 1-2 m of soil at 4-8 levels? Alan Robock Professor Alan Robock Editor, JGR - Atmospheres Director, Center for Environmental Prediction Department of Environmental Sciences Phone: +1-732-932-9478 Rutgers University Fax: +1-732-932-8644 14 College Farm Road E-mail: robock@envsci.rutgers.edu New Brunswick, NJ 08901-8551 USA http://envsci.rutgers.edu/~robock