Shearing stress

From Glossary of Meteorology

shearing stress

Any of the tangential components of the stress tensor.

In meteorology, the shearing stress is often that on a horizontal surface in the direction of the wind:
where μ is the dynamic (molecular) viscosity, u the wind speed, and z the vertical coordinate. A corresponding eddy stress, or Reynolds stress, may be defined, with an eddy viscosity in place of the molecular viscosity.
See also surface friction, Newtonian friction law.

Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.