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Erasable Programmable Read Only Memory. Programable read-only memory which can be erased, usually by ultraviolet light, and re-programmed.

Category:Meteorology

A defective maximum thermometer of the liquid-inglass type in which the mercury flows too freely through the constriction. Such a thermometer will indicate a maximum temperature that is too low.

Category:Meteorology

The record or trace made by a microbarograph.

Category:Meteorology

The outer, solid portion of the earth: the crust of the earth.

Category:Meteorology

A liquid-in-glass thermometer which uses an organic substance such as alcohol as the thermometer liquid. This type of thermometer has a low freezing point and a high coefficient of expansion. It is less accurate, however, than a mercury thermometer.

Category:Meteorology

meter-An instrument for measuring the transmissivity of the atmosphere; a type of transmissometer. It consists of a constant- intensity collimated light source located at a suitable distance from a photoelectric cell. Variation in the turbidity of the atm ...

Category:Meteorology

variable audio-modulated radiosonde developed at the Bureau of Standards and used by the United States weather services.

Category:Meteorology

A spring which is designed to achieve a fixed spring constant over a wide temperature range. Usually, this involves an alloy with high nickel content such as Ni-Span C. It is common for these springs to be stress relieved at elevated temperature after for ...

Category:Meteorology

The time required for an instrument to registe 63.2% of a step change in the variable being measured.

Category:Meteorology

Precipitation from a cumuliform cloud. Characterized by the suddenness of beginning and ending, by the rapid change in intensity, and usually by a rapid change in the condition of the sky. The solid or liquid water particles are usually bigger than the co ...

Category:Meteorology

Sustained winds greater than or equal to 40 mph or gust greater than or equal to 58 mph.

Category:Meteorology

An instrument for measuring the ultraviolet in solar and sky radiation.

Category:Meteorology

Thermometer for measuring the temperature in the soil at different depths.

Category:Meteorology

A record obtained from a meteorograph. A chart in which meteorological variables are plotted against time.

Category:Meteorology

A mercury barometer of the fixed cistern type in which a moveable scale terminating in an ivory point is used to compensate for the variations in the height of the mercury in the cistern

Category:Meteorology

A mercury-in-glass thermometer which records the temperature upon being inverted and retains its reading until being returned to the first position.

Category:Meteorology

A device for measuring the river stage. Also called stream gauge.

Category:Meteorology

Companion to the wet-bulb thermometer in a psychrometer. Used to measure ambient air temperature.

Category:Meteorology

A forecast of the expected stage or discharge at a specified time, or of the total volume of flow within a specified Interval of time, at one or more points along a stream.

Category:Meteorology

Thermodynamic change of state of a system in which there is transfer of heat across the boundaries of the system. Compare to adiabatic process.

Category:Meteorology

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