Flight plan for BA146

26 May 2004

Departure		10:15GMT	climb to 575hPa for transit

Intercept target	12:00		30W, 45N, 575hPa (4.5km) 
(distance 700km at science speed 400km/hr)

Fly on reciprocal to	12:15		about 44N
observed max pollution

Head west and descend   12:30		end descent at 800hPa (2km)
(profiles at 500ft/min
or about 10km/hr)

Head east and ascend    13:00		end climb at 400hPa (7km)

Head west and descend	13:15		end descent at observed level of max 
					pollution
Level run to west	13:30		(could be longer if time allowed)

Step down and level	13:45		( " " )
run to east

Head back		15:30 (land)	if time allows circle Pico at 
					850-900hPa in polluted air from US
					heading slowly towards UK

NOTES: Between 12 and 18GMT target airmass moves 7 deg.E and 1.5
deg.N.  Therefore by doing flight legs to west of intercept 1, the air
going on to France should be sampled.