Table 1. Two-Dimensional Chemical Transport Modelsa

	Kyy	Kzz	psi	Altitude
Model A	Morgan et al.	Morgan et al.	Morgan et al.	0-80 km
Model B	Summers et al.	Summers et al.	WACCM	0-130 km
Model C	Morgan et al.	Morgan et al.	ECMWF	0-50 km
Model D	Morgan et al.	Morgan et al.	NCEP2	0-35 km
Model E	Morgan et al.	Morgan et al.	WACCM	0-80 km

aMorgan et al. and Summers et al. refer to Morgan et al. [2004] and Summers et al. [1997], respectively.