This study considers several sample days of tropospheric column ozone (TRCO) obtained by subtracting LIMS stratosphere column ozone (SCO) from TOMS total ozone. TRCO is elevated in the southern hemisphere tropics near west Africa during November 1978. Conversely, there are small biases in the LIMS ozone of the lower stratosphere that affect the accuracy of its SCO values in March and in May 1979; calculated zonal variations of TRCO are spurious on those days.

CH₄ data from the Halogen Occultation Experiment show clear changes in the deep and shallow branches of the Brewer–Dobson circulation (BDC) from 1992 to 2005. CH₄ decreased in the upper stratosphere in the early 1990s following the Pinatubo eruption. There was also meridional transport of CH₄ from the tropics to mid-latitudes in both hemispheres in the late 1990s. CH₄ trends in the shallow branch agree with the tropospheric CH₄ trends from 1996 to 2005.

Ozone (O₃) is an excellent tracer of atmospheric transport processes in the middle atmosphere during Arctic winter. The Nimbus 7 LIMS O₃ profiles of late October 1978 through May 1979 now extend to the upper mesosphere via its Version 6 (V6) algorithm. We describe the generation of zonal Fourier coefficients from the profiles, followed by their gridding to daily synoptic maps of O₃. We then present several examples of how V6 O₃ varies in the upper stratosphere and mesosphere during winter.