Open AccessQuasi-biennial and quasi-triennial oscillations in atmospheric methane
Author(s) -
R. P. Kane
Publication year - 2000
Publication title -
mausam
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 12
ISSN - 0252-9416
DOI - 10.54302/mausam.v51i1.1757
Subject(s) - environmental science , climatology , atmospheric sciences , atmospheric methane , el niño southern oscillation , southern oscillation , methane , spectral analysis , meteorology , geography , physics , geology , chemistry , organic chemistry , quantum mechanics , spectroscopy
The growth rates of atmospheric methane measured at several locations distributed over the globe during 1983-92 were subjected to spectral analysis. Significant Quasi-biennial (2-3 years) and Quasi-triennial (3-4 years) oscillations were noticed at several locations but not simultaneously at all locations. The periodicities were bunched at 2.10-2.44, 3.1-3.5 and 3.9-4.8 years and, in some cases, matched with the 2.54 year periodicity of 50 hPa equatorial zonal wind and/or ~2.30 year and ~4.5 year periodicities of ENSO.