check chamber-A chamber use to check the sensing elements of radiosonde equipment.

check chamber-A chamber use to check the sensing elements of radiosonde equipment.

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 ...

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 sudden brief increase in the speed of the wind, followed by a lull or slackening. Compare to peak gust.

A sudden brief increase in the speed of the wind, followed by a lull or slackening. Compare to peak gust.

The ratios, to the mean wind speed, of the average magnitudes of the component fluctuations of the wind along three mutually perpendicular axes.

The ratios, to the mean wind speed, of the average magnitudes of the component fluctuations of the wind along three mutually perpendicular axes.

A measure of the intensity of gusts given by the ratio of the total range of wind speed between gusts and the intermediate periods of lighter wind to the mean wind speed, averaged over both gusts and lulls.

A measure of the intensity of gusts given by the ratio of the total range of wind speed between gusts and the intermediate periods of lighter wind to the mean wind speed, averaged over both gusts and lulls.

An instrument, dropped from high attitude and carried by a stable parachute. used to measure the vertical component of turbulence aloft.

An instrument, dropped from high attitude and carried by a stable parachute. used to measure the vertical component of turbulence aloft.

Precipitation composed of balls or irregular lumps of ice with diameters between 5 and 50 mm.

Precipitation composed of balls or irregular lumps of ice with diameters between 5 and 50 mm.

A recording hair hygrometer.

A recording hair hygrometer.

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 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.

Operation mode of a communication circuit in which each end can transmit and receive, but not simultaneously.

Operation mode of a communication circuit in which each end can transmit and receive, but not simultaneously.