Quantification and source apportionment of the methane emission flux from the city of Indianapolis
作者: M. O. L. CambalizaP. B. ShepsonJ. BognerD. R. CaultonB. StirmC. SweeneyS. A. MontzkaK. R. GurneyK. SpokasO. E. SalmonT. N. LavoieA. HendricksK. MaysJ. TurnbullB. R. MillerT. LauvauxK. DavisA. KarionB. MoserC. MillerC. ObermeyerJ. WhetstoneK. PrasadN. MilesS. Richardson
刊名: Elementa, 2015
来源数据库: Elementa
DOI: 10.12952/journal.elementa.000037
关键词: methane emissionurban environmentaircraft-based mass balance approach
原始语种摘要: We report the CH4 emission flux from the city of Indianapolis, IN, the site of the Indianapolis Flux Experiment (INFLUX) project for developing, assessing, and improving top-down and bottom-up approaches for quantifying urban greenhouse gas emissions. Using an aircraft-based mass balance approach, we find that the average CH4 emission rate from five flight experiments in 2011 is 135 ± 58 (1σ) moles s-1 (7800 ± 3300 kg hr-1). The effective per capita CH4 emission rate for Indianapolis is 77 kg CH4 person-1 yr-1, a figure that is less than the national anthropogenic CH4 emission (∼91 kg CH4 person-1 yr-1) but considerably larger than the global figure (∼48 kg CH4 person-1 yr-1). We consistently observed elevated CH4 concentrations at specific coordinates along our flight transects downwind...
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关键词翻译
关键词翻译
  • apportionment 分摊
  • emission 发射
  • downwind 下风的
  • landfill 填土
  • anthropogenic 人为的
  • quantifying 定量法
  • methane 甲烷
  • source 
  • negligible 可忽略的
  • person 人称