Acoustic gravity wave chemistry model for the RAYTRACE code

This report discusses the implementation of F-region electron chemistry in the acoustic gravity wave model of the code RAYTRACE. The chemistry consists of three dominant reactions that control electron depletion in an F-region parcel that is pushed down into the higher density E-region atmosphere by the passage of a large amplitude gravity wave. The effect of electron depletion on the propagation of high frequency radio waves is shown by comparison of RAYTRACE radio propagation calculations with and without chemistry.