Observational constraints on recent increases in the atmospheric CH 4 burden

J. Dlugokencky, E.; Bruhwiler, Lori; W. C. White, James; K. Emmons, L.; C. Novelli, P.; A. Montzka, S.; A. Masarie, K.; M. Lang, P.; M. Crotwell, Andrew; B. Miller, J.; V. Gatti, Luciana

doi:10.1029/2009gl039780

Public

Observational constraints on recent increases in the atmospheric CH 4 burden

Published in Geophysical Research Letters • Sep 1, 2009

Authors:

E. J. Dlugokencky

Lori Bruhwiler

James W. C. White

Abstract

Measurements of atmospheric CH 4 from air samples collected weekly at 46 remote surface sites show that, after a decade of near‐zero growth, globally averaged atmospheric methane increased during 2007 and 2008. During 2007, CH 4 increased by 8.3 ± 0.6 ppb. CH 4 mole fractions averaged over polar nor...

Subject

Atmospheric sciences

Northern Hemisphere

Climatology

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