Comment on ‘A dramatic decrease in the growth rate of atmospheric methane in the northern hemisphere during 1992' by E. J. Dlugokencky et al.
作者： Kathleen B. Hogan , Robert C. Harriss
DOI: 10.1029/94GL02601
关键词: Northern Hemisphere 、 Atmospheric sciences 、 Atmospheric methane 、 Oceanography 、 Climate change 、 Growth rate 、 Atmospheric composition 、 Environmental science 、 Air sampling 、 Sampling (statistics) 、 Atmospheric chemistry
摘要: The carefully measured decrease in the growth rate of atmospheric methane (CH4) 1992 reported by Dlugokencky et al. (1994) is an impressive accomplishment, and testimony for importance maintaining high-quality, long-term monitoring composition. changing CH4 has important implications assessing understanding potential magnitude rates a future greenhouse gas-induced climate change. Furthermore, data from current Climate Monitoring Diagnostics Laboratory (CMDL) globally-distributed network cooperative air sampling sites are clearly best record global trends distribution currently available. However, we argue briefly here that speculation on possible mechanisms decreased only one scenario many could possibly fit with constraints imposed data. Our comments to (1) illustrate difficulties deducing small changes complex, poorly understood, geographically diverse natural anthropogenic sources measurements at remotely-located CMDL (2) emphasize detailed bottoms-up analyses necessary really advance source strengths; not promoting alternative explain inmore » CH4.« less
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