Due to a production error in “Reflection of Planetary Waves in Three-Dimensional Tropospheric flows,” by Gudrun Magnusdottir and Peter H. Haynes, which appeared in the 15 February 1999 issue of the Journal of the Atmospheric Sciences, Vol. 56, No. 8, 654, the definition of potential vorticity appeared incorrectly.
The corrected definition appears below:
The staff of the Journal of the Atmospheric Sciences regret any inconvenience this error may have caused.