A modification of the dew cell used in 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 ...

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

An instrument used to measure the water vapor content of the air.

An instrument that shows changes in humidity.

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