UNIVERSITY OF WASHINGTON'S CONVAIR-580 FLIGHTS FOR SAFARI-2000

Date: 6 September 2000

UW Flight Number: 1833

Goals of Flight:

Return from Kasane, Botswana, to Pietersburg, South Africa, with measurements en route.

Period of Flight (engines on to engines off: UTC): 1133-1354

Location: Kasane, Botswana to Pietersburg, South Africa.

Weather Conditions: Thick haze.

Accomplishments:

Goal of flight achieved.

Additional Comments:

See PVH's comments on tape about profile out of Kasane and en route.

Main Instrument Malfunctions:

FSSP-300. PMS improved with zeroing. See Squawk list.

Flight Scientist: Peter Hobbs

Approx. UCT Time
(UTC = local time minus 2 hours)

Activity

1143

Take off.

1143-1152

Climb to 12,600 ft.

1152-1239

Transit at 12,600 ft (upper 1/3 of boundary layer in profile out of Kasane).

1240-1245

Descend to 10,000 ft.

1246-1317

Transit at 10,000 ft.

~1240-1256

Heater on PCASP switched from off to on to off. Check size of spectrum to see if there is any relative humidity (RH) effect on aerosol in going from low RH to even drier. (See PVH's comments on tape (~1230 UCT) about effect of RH on light scattering for changes in RH at low RH).

1317-1322

Descend to 9,400 ft.

1322-1330

Transit at 9,400 ft.

1330-1333

Descend to 7,800 ft (top of convective boundary layer at 8,400 ft) increase in CN and light scattering.

1333-1340

Transit at 7,800 ft.

~1340-1349

Descent to Pietersburg.

1349

Land.

END