Same as fogbow.

The maximum rate at which precipitation can pass through the surface into the soil, for a given soil in a given condition.

A cup anemometer with its shaft mechanically coupled to a magneto.

A type of disk hardness-gauge, especially useful in relatively soft snow. See disk hardness gauge.

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

The most common of the principal rainbow phenomena, which appears as an arc of about 42

bucket rain gauge-A rain gauge where the precipitation collected by the receiver empties into one side of a chamber which is partioned transversely at its center and is balanced bistably upon a horizontal axis. When a predetermined amount of water has bee ...

Same as photometer.

Psychrometer to which a small chain or rotary handle is attached so that the observer can rotate the instrument rapidly to properly ventilate the thermometer bulbs.

A thermometer with a muslin-covered bulb which is moistened. used to measure wet-bulb temperature.

An instrument for measuring radiant energy. See actinometer, Dines radiometer, photometer, Tulipian radiometer.

The scientific study of the waters of the earth, especially with relation to the effects of precipitation and evaporation upon the occurrence and character of water in streams, lakes, and on or below the land surface. In terms of the hydrologic cycle, the ...

A reversing thermometer (for seawater temperature) which is not protected against hydrostatic pressure. The mercury bulb is therefore squeezed, and the amount of mercury broken off on reversal is a function of both temperature and of hydrostatic pressure.

American Standard Code for Information Interchange. A standard code used to represent data using 8 bits (7 data bits and I parity bit) per character.

An anemometer in which the sensor rotation is transmitted to a mechanical counter which directly integrates the air movement past the sensor. Used to determine total air passage (wind run). Average wind speed can be calculated from the difference between ...

An increase in the central pressure of a pressure system; opposite of a deepening. More commonly applied to a low rather than a high.

Name sometimes used in place of pyranometer as a generic term.

Temperature to which absolutely dry air would have to be brought in order for it to have the same density as moist air, considered at the same pressure.

In the direction from which the wind is blowing.

A coating of ice, generally clear and smooth. formed by the freezing of supercooled water on a surface.