Articles | Volume 24, issue 3
Technical note
06 Feb 2024
Technical note |  | 06 Feb 2024

Technical note: Multi-year changes in the Brewer–Dobson circulation from Halogen Occultation Experiment (HALOE) methane

Ellis Remsberg

Data sets

UARS Halogen Occultation Experiment (HALOE) Level 2 V019 James M. Russell III et al.

Short summary
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.
Final-revised paper