In general, solar radiation received at the earth's surface. Contracted from incoming solar radiation.

The temperature at which an object gives out as much radiation as it receives from its surroundings.

Generally, the relative states of inflow, outflow, and storage of moisture over a given area of earth's surface.

A halo consisting of a faint white circle passing through the Sun and running parallel to the horizon for as much as 360

A plastic molding component formed by the reaction of phenol and formaldehyde. It can be heavily reinforced or "filled" with glass fibers or other materials. Phenolics are known for their high impact strength, excellent wear characteristics, and dimension ...

Wind with a speed between 48 and 55 knots (55 and 63 mph), Beaufort scale number 10.

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

See gain.

Solar and terrestrial radiation directed upward (away From the earth's surface); outgoing radiation.

A hydrometeor consisting of an aggregate of microscopic and more-or-less hygroscopic water droplets suspended in the atmosphere. It reduces visibility to a lesser extent than fog. The relative humidity of mist is often less than 95 percent.

An instrument that shows changes in humidity.

Generally, a measure of the departure of the mean daily temperature from a given standard, one degree day for each degree (

Not a linear function of the relevant variables.

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

A unit measure of electrical conduction. The facility with which a substance conducts electricity, as represented by the current density per unit electrical-potential gradient in the direction of flow. Electrical conductivity is the reciprocal of electric ...

A photometric unit of illuminance or illumination equal to one lumen per square meter

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.

The record of an aneroid barograph.

A surface weather observation, made at periodic times, of sky cover, state of the sky, cloud height, atmospheric pressure reduced to sea level, temperature, dew point, wind speed and direction. amount of precipitation, hydrometeors and lithometeors. and s ...

An instrument for measuring the relative speed of a fluid. It consists of a concentric pipe arrangement in which the inner pipe is open at one end and the outer pipe is perforated and closed at both ends. Each pipe is connected to a manometer. The unit is ...