Same as aneroid barometer. Holostelic means wholly made of solids, while aneroid means devoid of liquid.

A rain gauge which indicates but does not record the amount of precipitation captured.

The transducer of any hygrometer, i.e. that part of a hygrometer that quantitatively "senses" atmospheric water vapor.

Apparatus designed to measure the amount of precipitation falling in the form of snow. The device determines the weight of the snow or the volume of water after the snow melts.

A hygrometer in which the sensitive element is a strand or strands of human hair, the length of which is a function of the relative humidity of the air.

A seasonal wind of persistent direction, characterized by a pronounced change in direction between seasons.

A constant which describes the performance of a wind vane in response to a step change in wind direction. It is calculated from the relative amount of overshoot on two successive swings (half cycles) of a decaying oscillation. This specification is dimens ...

Same as ceiling light.

The distance or length of flow of the air past a point during a given interval of time.

A line drawn through all points on a map having the same amount of cloudiness.

Any conventional barometer fitted with an extended scale so that atmospheric pressure measurements may be made at both high and low altitudes.

A computed characteristic of a particular river basin, expressed as the time difference between the time-center of mass of rainfall and the time-center of mass of resulting runoff.

A buoyant balloon rising freely in the atmosphere, as opposed to a captive balloon.

A sounding balloon which, when operationally inflated, resembles an inverted teardrop.

An instrument for collecting liquid water from the atmosphere.

Turbulence encountered by aircraft when flying through air space devoid of clouds. Thermals and wind shear are the main causes.

February 2nd. In American folklore, a day that is popularly supposed to provide the key to the weather for the remainder of the winter. Specifically, if the ground-hog upon emerging from its hole casts a shadow, it will return underground, thereby forebod ...

A thermometer consisting of a clock mechanism the speed of which is a function of temperature.

Abbreviation for radio frequency.

A cone-tipped metal rod designed to be driven downward into deposited snow or firn. The measured amount of force required to drive the rod a given distance is an indication of the physical properties of the snow or firn.