Measurement and estimation of different environmental variables

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Information about Measurement and estimation of different environmental variables
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Published on April 22, 2014

Author: shahjee1522

Source: slideshare.net

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Measurement and estimation of different environmental variables

Measurement and estimation of different environmental variables

Thermometer placed in Stevenson screen

Thermocouples connected with data logger

Rain gauge

Rotating cup anemometer Kestrel 2500 hand-held weather meter

Sonic anemometer (for horizontal and vertical wind speed)

Hygrometer

Lux meter Light meter

A measure of the ability of the atmosphere to remove water from the surface through the processes of evaporation and transpiration assuming no control on water supply.

Penman–Monteith equation (after Howard Penman and John Monteith) Predicts net evapotranspiration (ET), requiring as input daily mean temperature, wind speed, relative humidity and solar radiation

A number representing net effect of evaporation, transpiration, and precipitation in producing cumulative moisture depletion in deep duff or upper soil layers.

Pyranometer

Pyranometer

Campbell-Stoke Sunshine recorder

Accupar

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