A dramatic decrease in the growth rate of atmospheric methane in the northern hemisphere during 1992

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Errata

This article is corrected by:

  1. Errata: Correction to “A dramatic decrease in the growth rate of atmospheric methane in the northern hemisphere during 1992” by E. J. Dlugokencky, K. A. Masarie, P. M. Lang, P. P. Tans, L. P. Steele, and E. G. Nisbet Volume 21, Issue 6, 507, Article first published online: 15 March 1994

Abstract

Global measurements of atmospheric methane have revealed a sharp decrease in the growth rate in the Northern Hemisphere during 1992. The average trend for the Northern Hemisphere during 1983–1991 was (11.6±0.2) ppbv yr−1, but the increase in 1992 was only (1.8±1.6) ppbv. In the Southern Hemisphere, the average increase (1983–1991) was (11.1±0.2) ppbv yr−1, and the 1992 increase was (7.7±1.0) ppbv. Various possibilities for a change in methane sources or sinks are discussed, but the most likely explanation is a change in an anthropogenic source such as fossil fuel exploitation, which can be rapidly and easily affected by man's activities.

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