Limitations of a compensation heat pulse velocity system at low sap flow: implications for measurements at night and in shaded trees.

@article{Becker1998LimitationsOA,
  title={Limitations of a compensation heat pulse velocity system at low sap flow: implications for measurements at night and in shaded trees.},
  author={Peter Becker},
  journal={Tree physiology},
  year={1998},
  volume={18 3},
  pages={177-184}
}
Unlike an ideal system, the return time to thermal balance (t(b)) between upstream and downstream thermistors, as measured by the (compensation) heat pulse velocity method, effectively depends on the heat input and the water content of the wood at zero and low sap flow. Even when these factors were held constant and ambient temperature was stabilized, a twofold variation in t(b) at zero flow was observed within and among Greenspan Technology sensors implanted in wooden posts, making it… CONTINUE READING

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