Fig.1: US domain at 18UT 27 July. Lagrangian opportunities highlighted on the 400 hPa level. If 1.5 < n <2.5, there are two-point opportunities (US-Azores or US-Europe) and if n > 2.5, there are three-point opportunities (US-Azores-Europe).
Fig.2: Section along the dashed line in Fig.1 showing Lagrangian opportunities.
Fig.3: Forward trajectories from the cross on Figs. 1 and 2.
Fig.4: NOx emissions tracer shown on the same section. The best opportunities at 400hPa are to the western end of the feature (higher NOx and biogenic tracer).
Fig.5: Biogenic emissions tracer shown on the same section.
Fig.6: Section along the dashed line in Fig.1 showing closest approach of forward trajectories to Faial, Azores.
Fig.7: Section along the dashed line in Fig.1 showing the time of closest approach of forward trajectories to Faial, Azores. Varies between early evening of 28 July, during DC8-BA146 comparison flight, and morning of 29 July.
Fig.8: Section along the dashed line in Fig.1 showing closest approach of forward trajectories to Creil, France.
Fig.9: Section along the dashed line in Fig.1 showing time of closest approach of forward trajectories to Creil, France. On average the transit time is 3 days giving arrival on 30 July.