Henry Charnock (25 December 1920 – 28 November 1997) was a British meteorologist. He is well known for his work on surface roughness and wind stress over water surfaces. The now named "Charnock's relationship" describes the aerodynamic roughness length,

z_0

, over a water surface by:

z_0=C u_*^2/g

where

u_*

is the friction velocity and

g

is the acceleration due to gravity (typically the

Standard gravity The standard acceleration due to gravity (or standard acceleration of free fall), sometimes abbreviated as standard gravity, usually denoted by or , is the nominal gravitational acceleration of an object in a vacuum near the surface of the Earth. ...

C

is Charnock's proportionality constant. Charnock was President of the International Union of Geodesy and Geophysics (IUGG) from 1971 to 1975.

References

Bibliography

'CHARNOCK, Henry’
Who Was Who, A & C Black, 1920–2008; online edn, Oxford University Press, Dec 2007 {{DEFAULTSORT:Charnock, Henry 1920 births 1997 deaths Commanders of the Order of the British Empire Fellows of the Royal Society Presidents of the Royal Meteorological Society Presidents of the International Union of Geodesy and Geophysics