NERC upper troposphere, lower stratosphere ozone programme The University of Reading




Intercontinental Transport of Ozone and its Precursors -

Forecast Trajectories
 

ITOP Plots of the Day
Selected plots are posted here daily by the ITOP-UK group. They are intended as discussion points for flight planning purposes.

In addition you can view forward trajectories from the P3, DC8 and BA146 flight tracks during the ICARTT experiment.

Posted 26/7/04.
Figure 1
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).

Figure 2
Fig.2: Section along the dashed line in Fig.1 showing Lagrangian opportunities.

Figure 3
Fig.3: Forward trajectories from the cross on Figs. 1 and 2.

Figure 4
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).

Figure 5
Fig.5: Biogenic emissions tracer shown on the same section.

Figure 6
Fig.6: Section along the dashed line in Fig.1 showing closest approach of forward trajectories to Faial, Azores.

Figure 7
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.

Figure 8
Fig.8: Section along the dashed line in Fig.1 showing closest approach of forward trajectories to Creil, France.

Figure 9
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.




Previous plots of the day

Posted 26/5/04
Posted 27/5/04
Posted 28/5/04
Posted 2/6/04
Posted 3/6/04
Posted 15/6/04
Posted 16/6/04
Posted 18/6/04
Posted 25/6/04
Posted 29/6/04
Posted 6/7/04
Posted 7/7/04
Posted 11/7/04
Posted 14/7/04
Posted 21/7/04
Posted 22/7/04
Posted 26/7/04



Links

Home page
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ICARTT forecasting page and bulletin board
NOAA Aeronomy Lab forecast products
John Methven's home page
Dr. John Methven,
Department of Meteorology,

University of Reading,
Earley Gate, PO Box 243,
Reading, RG6 6BB, UK.
Tel: +44 (0) 118 931 6721
Fax: +44 (0) 118 931 8905
Questions to
J.Methven@reading.ac.uk