Leaf temperature measurement techniques

Boundary-Layer Meteorology - 1971
Lomas, J.1, Schlesinger, E.1, Israeli, A.1
1Meteorological Service, Division of Agricultural Meteorology, Bet Dagan, Israel

Tóm tắt

Three types of thermocouple sensing elements were used to measure potato leaf temperatures in the uppermost layer of the canopy. A comparison between thermocouple hypodermic needles inserted into the midrib of the potato leaf and thermocouple clips fastened on its surface gave near-identical temperature readings. Miniature screens housing thermocouple sensors exposed at the upper canopy level and measuring ambient air temperatures showed excellent agreement (r = 0.996, N = 68) with potato leaf temperatures. This was not the case for temperatures recorded at the standard meteorological screen 2 m above the ground. It is therefore suggested that for micrometeorological measurements, where accuracy of crop temperature values is biologically significant, accurate information can be obtained with such miniature screens.

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Tài liệu tham khảo

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Boundary-Layer Meteorology

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