A photostationary state analysis of the NO/sub 2/-NO system based on airborne observations from the subtropical/tropical North and South Atlantic. Davis, D., D.; Chen, G.; Chameides, W.; Bradshaw, J.; Sandholm, S.; Rodgers, M.; Schendal, J.; Madronich, S.; Sachse, G.; Gregory, G.; Anderson, B.; Barrick, J.; Shipham, M.; Collins, J.; Wade, L.; and Blake, D. Journal of Geophysical Research, 98(D12):23501-23523, 1993.
abstract   bibtex   
The Chemical Instrumentation Test and Evaluation 3 (CITE 3) NO-NO/sub 2/ database has provided a unique opportunity to examine important aspects of tropospheric photochemistry as related to the rapid cycling between NO and NO/sub 2/. The results suggest that when quantitative testing of this photochemical system is based on airborne field data, extra precautions may need to be taken in the analysis. This was particularly true in the CITE 3 data analysis where different regional environments produced quite different results when evaluating the photochemical test ratio (NO/sub 2/)/sub Expt//(NO/sub 2/)/sub Calc/, designated as R/sub E//R/sub C/. The four most prominent regional environment data sets identified in this analysis were the free-tropospheric northern hemisphere (FTNH), free-tropospheric tropical northern hemisphere, free-tropospheric southern hemisphere, and tropical-marine boundary layer (plume). The respective R/sub E//R/sub C/ mean and median values for these four data subsets were 1.74, 1.69; 3.00, 2.79; 1.01, 0.97; and 0.99, 0.94. The most likely source of the R/sub E//R/sub C/ bias in the FTNH results was the presence of a systematic error caused by NO/sub 2/ interference from a yet unidentified NO/sub y/ species and/or the presence of unmeasured hydrocarbons. Possible ways to minimize these problems in future airborne missions are discussed.
@article{
 title = {A photostationary state analysis of the NO/sub 2/-NO system based on airborne observations from the subtropical/tropical North and South Atlantic},
 type = {article},
 year = {1993},
 keywords = {Airborne observations,Atmospheric chemistry,Chemical Instrumentation Test and Evaluation 3,Free-tropospheric southern hemisphere,Free-tropospheric tropical northern hemisphere,Hydrocarbons,NO/sub 2/,NO/sub 2/-NO system,Nitrogen compounds,Photochemical system,Photochemistry,Photostationary state analysis,Systematic error,Tropical-marine boundary layer plume,Tropospheric photochemistry,Unidentified NO/sub y/ species,cite 3,no},
 pages = {23501-23523},
 volume = {98},
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 notes = {Article},
 abstract = {The Chemical Instrumentation Test and Evaluation 3 (CITE 3) NO-NO/sub 2/ database has provided a unique opportunity to examine important aspects of tropospheric photochemistry as related to the rapid cycling between NO and NO/sub 2/. The results suggest that when quantitative testing of this photochemical system is based on airborne field data, extra precautions may need to be taken in the analysis. This was particularly true in the CITE 3 data analysis where different regional environments produced quite different results when evaluating the photochemical test ratio (NO/sub 2/)/sub Expt//(NO/sub 2/)/sub Calc/, designated as R/sub E//R/sub C/. The four most prominent regional environment data sets identified in this analysis were the free-tropospheric northern hemisphere (FTNH), free-tropospheric tropical northern hemisphere, free-tropospheric southern hemisphere, and tropical-marine boundary layer (plume). The respective R/sub E//R/sub C/ mean and median values for these four data subsets were 1.74, 1.69; 3.00, 2.79; 1.01, 0.97; and 0.99, 0.94. The most likely source of the R/sub E//R/sub C/ bias in the FTNH results was the presence of a systematic error caused by NO/sub 2/ interference from a yet unidentified NO/sub y/ species and/or the presence of unmeasured hydrocarbons. Possible ways to minimize these problems in future airborne missions are discussed.},
 bibtype = {article},
 author = {Davis, D D and Chen, G and Chameides, W and Bradshaw, J and Sandholm, S and Rodgers, M and Schendal, J and Madronich, S and Sachse, G and Gregory, G and Anderson, B and Barrick, J and Shipham, M and Collins, J and Wade, L and Blake, D},
 journal = {Journal of Geophysical Research},
 number = {D12}
}
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