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. Author manuscript; available in PMC: 2019 Apr 15.
Published in final edited form as: J Geophys Res Atmos. 2018;123(19):11225–11237. doi: 10.1029/2018JD029284

Figure 2.

Figure 2.

Flight path of the C-130 aircraft (gray) during research flight 11 on 9 March (polluted plume encounter number 44). The inset shows a close-up of the flight path when the polluted air mass encounter shown in Figure 1 occurred (red in both the main figure and inset), with the wind sector (green) in which the potential emission sources reside. This plume encounter (plume number 44; see Table S1) was attributed to the Homer City power plant given that the facility was just ~2.7 km away (~0.15 hr plume travel time assuming the observed wind speed and direction stayed constant) from where the air mass was observed and the high levels of SO2 and halogen-containing compounds (Figure 1), and given that the next closest power plants in the wind sector was ~50 km away. Inset image was obtained on 25 March 2018 (Google, 2018). CEMS PP = Continuous Emission Monitoring Systems power plant; OH = Ohio; PA = Pennsylvania; NY = New York; WV = West Virginia; VA = Virginia.