Same as ombrometer.

A hygrometer based upon the diffusion of water vapor through a porous membrane.

Thermometer used for measuring the lowest temperature attained during a given interval of time, for example, a day.

Wind with a speed between 17 and 21 knots (19 and 24 mph); Beaufort scale number 5.

Electromagnetic radiation lying in the wavelength interval between 0.8 micron and I millimeter. At the lower limit of this interval, the infrared radiation spectrum is bounded by visible radiation, while on its upper limit it is bounded by microwave radia ...

A small, limited-capacity central processing unit contained entirely on one semiconductor chip.

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

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

An instrument for measuring the frost point of the atmosphere.

A strong wind characterized by a sudden onset, a duration on the order of minutes, and a rather sudden decrease in speed.

The temperature at which the liquid and solid forms of a substance may exist in equilibrium at a given pressure (usually one standard atmosphere). The true freezing point of water is known as the ice point.

A standard interface between a computer input/output port and a peripheral device. Signal properties including time duration, voltage. and current, are specified by the Electronic Industries Association.

Solar and terrestrial radiation directed downwards (towards the earth's surface); incoming radiation.

A protocol similar to RS232 which makes use of differential transmission to provide high speed data transmission over significantly longer distances.

Apparatus designed to measure and record the size distribution of raindrops as they occur in the atmosphere.

A hypothetical body which absorbs some constant fraction, between zero and one, of all electromagnetic radiation incident upon it, which fraction is the absorptivity and is independent of wavelength. Compare to black body, white body.

A hygrometer which includes an arrangement for the time recording of atmospheric humidity.

For a given location, a measure of the long-range effectiveness of precipitation in promoting plant growth. Also called precipitation-evaporation index.

Rain gauge which registers precipitation that is too light to be registered by ordinary recording of the depth of water from precipitation. Same as ombrometer.

A set of weekly colored rainbow arcs sometimes discernable inside a primary rainbow.