Temperature and Humidity Group

The Temperature and Humidity Group realizes, maintains, and disseminates the national measurement standards for temperature and humidity. The Group advances temperature and humidity measurements and applications; calibrates sensors and disseminates practical standards; participates in international comparisons to validate national standards; develops measurement methods, devices, and reference materials and data; assists users in the assessment of measurement uncertainty; prepares and promulgates evaluations and descriptions of temperature and humidity measurement processes; coordinates national and international temperature and humidity measurement standards and methods; and determines the uncertainty of the national standards of temperature and humidity with respect to fundamental thermodynamic definitions.