Humidity fluctuations in the marine boundary layer measured at a coastal site with an infrared humidity sensor
✍ Scribed by Anna M. Sempreviva; Sven-Erik Gryning
- Publisher
- Springer
- Year
- 1996
- Tongue
- English
- Weight
- 981 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0006-8314
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✦ Synopsis
An extensive set of humidity turbulence data has been analyzed from 22-m height in the marine boundary layer. Fluctuations of humidity were measured by an "OPHIR", an infrared humidity sensor with a 10 Hz scanning frequency and humidity spectra were produced. The shapes of the normalized spectra follow the established similarity functions. However the 1 0-min time averaged measurements underestimate the value of the absolute humidity. The importance of the humidity flux contribution in a marine environment in calculating the Obukhov stability length has been studied. Deviations from Monin-Obukhov similarity theory seem to be connected to a low correlation between humidity and temperature.