psychrometry

https://doi.org/10.1351/goldbook.P04940
The use of a wet-and-dry bulb thermometer for measurement of atmospheric humidity.
Source:
PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2208 (https://doi.org/10.1351/pac199062112167)