A sensitive recording dew-balance

✍ Scribed by E. G. Jennings; J. L. Monteith

• Book ID: 104571574
• Publisher: John Wiley and Sons
• Year: 1954
• Tongue: English
• Weight: 321 KB
• Volume: 80
• Category: Article
• ISSN: 0035-9009
• DOI: 10.1002/qj.49708034409

✦ Synopsis

Abstract

The instrument described gives a continuous record on photographic paper of the change in weight of a naturally exposed grass surface, 330 cm^2^ in area. The sensitivity is 2 mg cm^−1^ per cm of record and the time scale is 0.5 hr/cm. Observations suggest that on very calm nights the condensation of vapour reaching the surface by diffusion from the atmosphere is only a small fraction of the total ‘dew.’ The maximum rate of deposition that has been observed on short grass is 0.03 mm hr^−1^.