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Instrumentation and measurement strategy for the NOAA SENEX aircraft campaign as part of the Southeast Atmosphere Study 2013

Carsten Warneke 1, 2 Michael Trainer 2 Joost de Gouw 1, 2 David Parrish 1, 2 David Fahey 2 A Ravishankara 2 Ann Middlebrook 2 Charles Brock 2 James Roberts 2 Steven Brown 2 Jonathan Neuman 1, 2 Brian Lerner 1, 2 Daniel Lack 1, 2 Daniel Law 1, 2 Gerhard Hübler 1, 2 Iliana Pollack 1, 2 Steven Sjostedt 1, 2 Thomas Ryerson 2 Jessica Gilman 1, 2 Jin Liao 1, 2 John Holloway 1, 2 Jeff Peischl 1, 2 John Nowak 1, 2 Kenneth Aikin 1, 2 Kyung-Eun Min 1, 2 Rebecca Washenfelder 1, 2 Martin Graus 1, 2 Mathew Richardson 1, 2 Milos Markovic 1, 2 Nick Wagner 1, 2 André Welti 1, 2 Patrick Veres 1, 2 Peter Edwards 1, 2 Joshua Schwarz 2 Timothy Gordon 1, 2 William Dube 1, 2 Stuart Mckeen 1, 2 Jerome Brioude 3, 1, 2 Ravan Ahmadov 1, 2 Aikaterini Bougiatioti 4 Jack Lin 4 Athanasios Nenes 4, 5, 6 Glenn Wolfe 7, 8 Thomas Hanisco 7 Ben Lee 9 Felipe Lopez-Hilfiker 9 Joel Thornton 9 Frank Keutsch 10 Jennifer Kaiser 10 Jingqiu Mao 11, 12 Courtney Hatch 13
Abstract : Natural emissions of ozone-and-aerosol-precursor gases such as isoprene and monoterpenes are high in the southeastern US. In addition, anthropogenic emissions are significant in the southeastern US and summertime photochemistry is rapid. The NOAA-led SENEX (Southeast Nexus) aircraft campaign was one of the major components of the Southeast Atmosphere Study (SAS) and was focused on studying the interactions between biogenic and anthropogenic emissions to form secondary pollutants. During SENEX, the NOAA WP-3D aircraft conducted 20 research flights between 27 May and 10 July 2013 based out of Smyrna, TN. Here we describe the experimental approach, the science goals and early results of the NOAA SENEX campaign. The aircraft, its capabilities and standard measurements are described. The instrument payload is summarized including detection limits, accuracy, precision and time resolutions for all gas-and-aerosol phase instruments. The inter-comparisons of compounds measured with multiple instruments on the NOAA WP-3D are presented and were all within the stated uncertainties, except two of the three NO2 measurements. The SENEX flights included day- and nighttime flights in the southeastern US as well as flights over areas with intense shale gas extraction (Marcellus, Fayetteville and Haynesville shale). We present one example flight on 16 June 2013, which was a daytime flight over the Atlanta region, where several crosswind transects of plumes from the city and nearby point sources, such as power plants, paper mills and landfills, were flown. The area around Atlanta has large biogenic isoprene emissions, which provided an excellent case for studying the interactions between biogenic and anthropogenic emissions. In this example flight, chemistry in and outside the Atlanta plumes was observed for several hours after emission. The analysis of this flight showcases the strategies implemented to answer some of the main SENEX science questions.
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Submitted on : Monday, February 22, 2021 - 9:54:38 AM
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Carsten Warneke, Michael Trainer, Joost de Gouw, David Parrish, David Fahey, et al.. Instrumentation and measurement strategy for the NOAA SENEX aircraft campaign as part of the Southeast Atmosphere Study 2013. Atmospheric Measurement Techniques, European Geosciences Union, 2016, 9, pp.3063 - 3093. ⟨10.5194/amt-9-3063-2016⟩. ⟨hal-03135287⟩



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