surface friction velocity

URI: http://linked.data.gov.au/def/tern-cv/376865de-c13b-41ae-a8ff-d564da40abb7

Also known as surface_friction_velocity, ustar

Date created: 2021-05-21
Date modified: 2021-06-16

In concept scheme

Parameter Type

Definition

A reference wind velocity usually applied to motion near the ground where the shearing stress is often assumed to be independent of height and approximately proportional to the square of the mean velocity. The friction velocity is, therefore, exactly the velocity for which this square law would be valid. Sutton, O. G. 1953. Micrometeorology. p. 76.

Broaders

• atmospheric parameter

Exact match

• https://glossary.ametsoc.org/wiki/Friction_velocity

source

glossary.ametsoc.org

notation

ustar

notation

USTAR

note

USTAR is the shortname specified in BADM variables (https://ameriflux.lbl.gov/data/aboutdata/data-variables/), whereas ustar is the abbreviation for the variable specified by OzFlux (http://ozflux.org.au/portal/docs/VariableNamesandDefinitions.pdf).