Abstract: A study has been conducted to determine the reliability of radiosonde humidity measurements at low relative humidifies. Carbon hygristors were calibrated over a wide range of conditions and compared with manufacturing ...

Abstract: A modification to the radiosonde humidity channel to eliminate a temperature induced bias is described. Data are presented from Right test comparisons of radiosondes so modified and standard unmodified radiosondes. It is ...

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Abstract: Efforts are described involving the development of an expendable, balloon-borne dew point hygrometer which is compatible with standard radiosonde equipment, maintains the inherent accuracy of this sensing technique, and ...

Abstract: Temperature-induced humidity errors in the carbon humidity element ML-476 are described. The dominant error is caused by solar irradiation and results in a lowering of reported humidity values. The effect was found with ...