What is a Bowen ratio, and can an AP200 measure it?

The Bowen ratio is defined as β = γ ΔT/ΔH2O, where γ is the psychometric constant, ΔT is the temperature gradient, and ΔH2O is the humidity gradient. The AP200 can measure temperature (with the optional 107-L temperature sensor) and humidity gradients, but its accuracy may not be adequate for a useful Bowen ratio measurement.

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