𝔖 Bobbio Scriptorium
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Humidity and temperature microstructure near the ground

✍ Scribed by H. C. Martin

Publisher
John Wiley and Sons
Year
1972
Tongue
English
Weight
418 KB
Volume
98
Category
Article
ISSN
0035-9009

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✦ Synopsis

Abstract

Day‐time records of the microstructure of humidity and temperature at 2 and 4 m are analysed. Supporting data include the temperature and wind gradients, the net radiation, the sensible heat flux, and a derived value for the latent heat flux.

The two variables are remarkably similar and share the following properties: The characteristic scale of turbulence increases with height and decreases with increasing instability beyond near‐neutral conditions. The logarithmic spectra follow a βˆ’5/3 slope for wave numbers greater than 0.15 m^βˆ’1^. In this range, the spectral estimates increase with increases in the appropriate flux (sensible or latent heat flux for temperature or humidity spectra), and decrease with height.

The humidity variance contains large‐scale components which are of lesser importance in the temperature variance. This difference in the two variables has tentatively been attributed to properties of the site.

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