Evaporation pan: Difference between revisions

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|Meaning=A type of [[evaporation gauge]] or [[evaporimeter]]; it is a pan used in the measurement  of the [[evaporation]] of water into the [[atmosphere]].
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|Explanation=The U.S. Weather Bureau evaporation pan (Class-A pan) is a cylindrical container fabricated  of galvanized iron or other rust-resistant metal with a depth of 25.4 cm (10 in.) and a diameter  of 121.9 cm (48 in.). The pan is accurately leveled at a site that is nearly flat, well sodded, and  free from obstructions. The [[water level]] is maintained at between 5 and 7.5 cm (2 and 3 in.)  below the top of the rim, and periodic measurements are made of the changes of the water level  with the aid of a [[hook gauge]] set in the [[still well]]. When the water level drops to 17.8 cm (7 in.),  the pan is refilled. Its average pan coefficient is about 0.7. <br/>''See also'' [[BPI pan]], [[Colorado sunken pan|Colorado sunken  pan]], [[floating pan]], [[screened pan]].
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== evaporation pan ==
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<div class="definition"><div class="short_definition">A type of [[evaporation gauge]] or [[evaporimeter]]; it is a pan used in the measurement  of the [[evaporation]] of water into the [[atmosphere]].</div><br/> <div class="paragraph">The U.S. Weather Bureau evaporation pan (Class-A pan) is a cylindrical container fabricated  of galvanized iron or other rust-resistant metal with a depth of 25.4 cm (10 in.) and a diameter  of 121.9 cm (48 in.). The pan is accurately leveled at a site that is nearly flat, well sodded, and  free from obstructions. The [[water level]] is maintained at between 5 and 7.5 cm (2 and 3 in.)  below the top of the rim, and periodic measurements are made of the changes of the water level  with the aid of a [[hook gauge]] set in the [[still well]]. When the water level drops to 17.8 cm (7 in.),  the pan is refilled. Its average pan coefficient is about 0.7. <br/>''See also'' [[BPI pan]], [[Colorado sunken pan|Colorado sunken  pan]], [[floating pan]], [[screened pan]].</div><br/> </div>
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Latest revision as of 08:24, 29 March 2024

A type of evaporation gauge or evaporimeter; it is a pan used in the measurement of the evaporation of water into the atmosphere.

The U.S. Weather Bureau evaporation pan (Class-A pan) is a cylindrical container fabricated of galvanized iron or other rust-resistant metal with a depth of 25.4 cm (10 in.) and a diameter of 121.9 cm (48 in.). The pan is accurately leveled at a site that is nearly flat, well sodded, and free from obstructions. The water level is maintained at between 5 and 7.5 cm (2 and 3 in.) below the top of the rim, and periodic measurements are made of the changes of the water level with the aid of a hook gauge set in the still well. When the water level drops to 17.8 cm (7 in.), the pan is refilled. Its average pan coefficient is about 0.7.
See also BPI pan, Colorado sunken pan, floating pan, screened pan.

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