Ozone yields and production efficiencies in a large power plant plume

Menachem Luria, Robert E. Imhoff, Ralph J. Valente, Roger L. Tanner*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The plume of Tennessee Valley Authority's coal-fired Cumberland power plant was sampled during four different days in the summer of 1998 and 1999 from an instrumented helicopter. The extent of formation of ozone and various secondary NOy species in the plume was measured and the rates of loss processes estimated. The rates of these processes were found to be similar during three of the four sampling days. On the fourth day conversion and removal processes within the plume were significantly slower apparently due to lower ambient temperatures, and poor dispersion conditions. On the three more 'reactive' days ozone yield (Y) was found to be in the range of 1.5-2.6 molecules of O3 produced per molecule of NOx emitted. The ozone production efficiency, estimated from Y and the average chemical age of the farthest distance sampled, varied from 2.3 to 5.4.

Original languageEnglish
Pages (from-to)3593-3603
Number of pages11
JournalAtmospheric Environment
Volume37
Issue number25
DOIs
StatePublished - Aug 2003

Keywords

  • Ozone production efficiency
  • Ozone yield
  • Plume ozone formation
  • Power plant plumes

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