Differences between eddy coefficients for instantaneous and continuous vertical diffusion into the neutral surface layer

✍ Scribed by J. W. Deardorff

• Publisher: Springer
• Year: 1974
• Tongue: English
• Weight: 368 KB
• Volume: 5
• Category: Article
• ISSN: 0006-8314
• DOI: 10.1007/bf00123491

✦ Synopsis

Batchelor's similarity law for vertical diffusion into the neutral surface layer was shown by Ellison to yield a universal constant equal to the Karman constant. However, the argument assumes that the eddy coefficient for mass above an instantaneous ground source is the same as for a continuous source. In this study, the former eddy coefficient is found to be time dependent and height independent if the particulate distribution is Gaussian. This leads to a value of the universal constant 2/z smaller than found by Ellison.