Same as instrument shelter.

Extended Binary Coded Decimal Interchange Code. A standard code used to represent data using 8 bits per character.

A tube designed to measure the rate of flow of fluids. It consists of a tube having a constriction or throat at its midsection. The difference between the pressure measured at the inlet and at the throat is a function of the fluid velocity. Compare to Pit ...

Any device or instrument for measuring salinity, especially one based on electrical conductivity methods.

The gravity flow of water within soil.

The lowest temperature that can be obtained on a wet-bulb thermometer in any given sample of air. Obtained by evaporation of water (or ice) from the muslin wick. Used in computing dew point and relative humidity.

The wind speed and direction at various levels in the atmosphere above the level reached by surface weather observations.

The stage on a fixed river gauge at which it is necessary to begin issuing warnings or river forecasts if adequate precautionary measures are to be taken before flood stage is reached.

A vector term which includes both wind speed and wind direction.

A common type of liquid-inglass thermometer, used, in meteorology, in psychrometers and as a maximum thermometer.

Nested Grid Model generated every 12 hours by NCEP.

Defect in the action of an aneroid barometer resulting in a sluggish adjustment of the index toward the correct reading when the barometer is subjected to a large and rapid change in pressure.

Solar radiation scattered by particles in the atmosphere.

The depth of water that would result from the melting of snow or ice, assuming measurement on a horizontal surface and no infiltration or evaporation.

Electromagnetic radiation of shorter wavelength than visible radiation but longer than x-rays, between 0.02 and 0.4 micron (200 and 4000 angstrom).

An instrument which measures the effective terrestrial radiation. See Angstrom pyrgeometer.

An instrument for recording global solar radiation.

A device, similar to a potometer, for measuring transpiration, consisting of a vessel containing soil in which one or more plants are rooted and sealed so that water can escape only by transpiration from the plant.

That horizontal wind velocity at which the Coriolis acceleration exactly balances the horizontal pressure force. It is directed along contour lines or isobars.

The level at which ice crystals and snowflakes melt as they descend through the atmosphere.