NSF C-130 Mission Summary Report (EPIC)

Flight 17
ITCZ Flight 9
153530	Take Off
P3 Intercomparisons
600 ft 155520 160020
C130	Temperature 28.3
	Pressure 986.4
	Pressure Altitude 232.4
	Humidity 23.6
	Winds 85.5 @ 2.8 m/s
6000 ft 160940 161440
Time Check	161230	on C130  161229 on P3
C130	Temperature  18.4
	Pressure 807.7
	Pressure Altitude  1950.7
	Humidity 11.0 .5
	Winds  24.6 3.3
13000 ft  162700 163200
P3	Temperature 5.4
	Pressure	616.1
	Pressure Altitude
	Humidity -4.3
	Winds	84 20.7 kts
C130	Temperature	6.0
	Pressure	616.2
	Pressure Altitude 13676
	Humidity	-4.0  .5
	Winds	85.4 11.8
171200	Starting first sounding from 6000 m to surface
172400	Down through a cloud but high aerosol concentrations above the cloud.
175800	Cloud Photo 1, Looking SW at developing cloud line that we'll be
	working
180325	Cloud Photo 2 but just before penetration
180400	Cloud penetration at 6000 m
181100	Cloud penetration, 
	Vertical Velocity 18 m/s, 500 cm-3
181900	Cloud Photo 3, Looking at cloud from 4000 m, prior to turning into
	the next cloud penetration.
182145	Cloud Photo 4, Prior to penetration
182330	Penetration
183220	Cloud Photo at 4000 m
183315	Penetration
184140	Cloud Photo 6 at 2500 m
184300	Penetration
	600 cm-3, 5 m/s, no drizzle, 2 g/m3, excellent new growth
184845	Cloud Photo 7 at 2500 m
184920	Penetration
	800 cm-3, 17 m/s, 3 g/m3, almost no drizzle
190435	Cloud Photo 8, 1000 m
190700	Penetration
	800 cm-3, 5 m/s, 
191500	Cloud Photo 9, 1000 m
191600	Penetration
192230	Dropped to 300 m in and out of cloud bases
	PCASP Concentrations between 800 and 1000
200000	Starting second sounding to 6000 m
203000	Cloud Photo 10 at new cloud line, 6000 m
203800	Cloud Photo
203830	Another penetration after 90/270 at 6000
204900	Cloud Photo 11, 4000 m
	This is looking at cloud in dying stages
205115	Penetration
205900	Cloud Photo 12, 2500 m, looking at remnants of previous cloud
210245	Cloud Penetration
210515	Cloud Photo 13, different cloud
210545	Penetration
211720	Penetration at 1000 m, same cloud
212345	At 300 m, a little below cloud base
212900	90/270 to 30 m
213800	Start sounding
215900	Starting maneuvers
Summary
Todays's flight consisted of an intercomparison with the P3, dropsonde tests and
two cloud studies. Intercomparisons were done at 600, 6000 and 13000 feet.

The dropsonde study consisted of dropping three sondes in rapid succession
from 6000 m, followed by a sounding to the surface and back to 6000m

The first cloud study was of a line in the NW quadrant of the ITCZ research
area. The clouds were forming along a NE to SW line and the flight pattern
consisted of a figure 8 pattern at 6000m, 4000m, 2500m, 1000m, 300m and 30
m levels. The pattern was constantly shifted to bring the aircraft through new
growth on the NE section of the line. Of particular note were the strong
easterly winds that were 10-15 m/s from 2500 m to 6000 m, 3-5 m/s below this
altitude. There were heavy aerosol layers at the surface, 2500 m and 4000m. CN
concentrations varied from 5000 - 10000 cm-3, PCASP concentrations between
500 and 1500 cm-3. The high concentrations of aerosols at the surface were
reflected in high droplet concentrations, sometimes as high as 800 cm-3. Some
of the clouds penetrated had 18 m/s updraft velocities and 2-3  degrees of
buoyancy as seen in the OPHIR temperature measurements.

The second line studied was in the decay stage and several pass starting at 6000
m through the cloud made measurements in its collapsing stages.