Atmometer
meteorological instrumentation
An atmometer or evaporimeter is a scientific instrument used for measuring the rate of water evaporation from a wet surface to the atmosphere. Atmometers are mainly used by farmers and growers to measure evapotranspiration (ET) rates of crops at any field location. Evapotranspiration is a measure of all of the water that evaporates from land surfaces plus the water that transpires from plant surfaces. Based on the amount of water that does evaporate and transpire, the user can water crops correspondingly, which results in less water use and possibly increased crop yields. Companies that currently sell atmometers include C&M Meteorological Supply and Calsense.
Design
An atmometer consists of a porous, ceramic plate connected to a water reservoir by a glass or plastic tube. The device stands around 1.5–2 ft (0.46–0.61 m) tall with a diameter of 3–4 in (76–102 mm). Water is drawn from the water reservoir through the tube to wet the plate. As the water on the plate evaporates, more water is drawn from the reservoir to re-wet the plate. A canvas cover made of Gore-Tex is placed over the plate to prevent anything from getting in.
“Atmometer” enters the record as meteorological instrumentation. Crown Archives preserves that source wording while asking what Atmometer, meteorological and instrumentation can confirm, complicate or overturn.
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This entry incorporates text from “Atmometer” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.