Meteorology: Random Listings RSS

An instrument which indicates the presence of precipitation. The ombroscope consists of a heated, water-sensitive surface which indicates by mechanical or electrical techniques the occurrence of precipitation.

Category:Meteorology

A general name for instruments which detect the presence of (but do not necessarily measure) small electrical charges by electrostatic means. Compare to electrometer.

Category:Meteorology

The smallest change in the environment that causes detectable change in the indication of an instrument. Compare to sensitivity.

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The number of cycles per second between the limits of a frequency band.

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Dew

Water condensed onto objects at or near the ground, due to the fact that their temperatures have fallen below the dew point temperature of the surrounding air, but not below freezing.

Category:Meteorology

An instrument for measuring angles of inclination. Used in conjunction with a ceiling light to measure cloud height at night.

Category:Meteorology

A remote indicator for wind speed and direction used in conjunction with a contact anemometer and a wind vane. The indicator consists of a center light, connected to the contact anemometer, surrounded by eight equally spaced lights which are individually ...

Category:Meteorology

An instrument for measuring the difference of the solar radiation falling on both sides of a horizontal surface from the whole hemisphere.

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A type of precipitation composed of unbranched crystals in the form of needles, columns, or plates. Usually has a very slight downward motion and may fall from a cloudless sky.

Category:Meteorology

The pressure unit of the meter-ton-second system of physical units. equal to 10 millibars or 101 dynes per cm2.

Category:Meteorology

An instrument used to measure the water vapor content of the air.

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Kew

pattern barometer-Mercurial barometer with a fixed scale and cistern and which therefore requires only one adjustment before each reading.

Category:Meteorology

The interval between the lower and upper measuring limits of an instrument, i.e. a thermometer with a range of -35 to 50

Category:Meteorology

Not a linear function of the relevant variables.

Category:Meteorology

That stage, on a fixed river gauge, at which overflow of the natural banks of the stream begins to cause damage in any portion of the reach for which the gauge is used as an index.

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Readily taking up and retaining moisture.

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A curve showing the variation of temperature with height in the free air. See lapse rate.

Category:Meteorology

A thin metal disc partially evacuated of air used to measure atmospheric pressure by measuring its expansion and contraction.

Category:Meteorology

A type of photoelectric photometer used to measure high-altitude winds on the assumption that stellar scintillation is caused by atmospheric inhomogeneities being carried along by wind near the tropopause level.

Category:Meteorology

Same as humidity strip.

Category:Meteorology

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