980830 MISSION SCIENTEST POST FLIGHT SUMMARY

Date of Mission:	30 August, 1998
Daily Mission Scientist:	Ed Zipser
Deputy Daily Mission Scientist:	Gerry Heymsfield
DC-8 Scientist:	Ed Zipser
S-POL Scientist:	Gerry Heymsfield
Project Scientist:	Robbie Hood
UND Citation II Scientist:	Jeff Stith
Water Vapor Scientist:	Harvey Melfi
Nowcasters:	Ed Bensman

ER2 Tail Number:	NASA 806
Sortie:	98-113
Pilot:	Ken Broda
Take Off:	1940 UTC (98/08/30)
Landing:	2324 UTC (98/08/30)
Duration:	3.73 hrs

DC8 Tail Number:	NASA 817
Sortie:	980413
Pilot:	Frank Batease Ed Lewis
Mission Manager:	Chris Miller
Navigator:	Trout
Take Off:	1949 UTC (98/08/30)
Landing:	0336 UTC (98/08/30)
Duration:	7.78 hrs

DC8 Mission Description:

  Begin by documentation of storm structure in Danielle through 
execution of two figure-fours to 100 nm radius at 35000 ft.  Coordinate
closely with  ER-2, more loosely with the NOAA P-3 (NOAA 43) doing the 100
nm radius pattern, and still more loosely with NOAA 42 operating along six
radials of 300 nm each.

 Major objective of mission follows the figure 4's:  an 11-pointed 
sawtooth pattern crossing the (formerly!) clear "inflow" area from the 
northeast quadrant, through southeast, and around to the southwest side.

 After completion of (1) and (2) above, the DC-8 leaves the pattern 
close to Andros Island, does a leg along and just east of Andros, 
coordinated with the ER-2.

DC8 Mission Notes:

All DC-8 objectives were satisfied.  The early departure of the ER-2 and 
the need to turn off E-DOP was a disappointment, as there was no EDOP data 
over Danielle, and of course the ER-2 did not go to Andros.


Danielle gradually developed a better-organized inner core structure at 
DC-8 altitude.  Even on the first pass (W-E), there was a circular radar 
eye (DC-8 radar) of about 40 nm diameter and some noticeable updrafts in 
the west wall cloud on entry.  Throughout the two figure-four patterns, 
the best convection appeared on the west semicircle, sometimes with 
light-moderate turbulence.  No lightning was observed in the eyewall, 
although some was later observed in the "clear slot" on the SE side at 
large radius from more isolated storms.  The wind eye was fairly well-
marked by 30-40 knot winds at radii of 25-30 nm.


The large sawtooth pattern encountered more clouds than had been 
anticipated; during the 8-9 hours that elapsed since mission planning the 
clear area on the east and south sides had filled in considerably.  (This
could have ben flown first, had not the Andros overpass been scheduled for
after dark, which constrained the flight planning for the main mission.)
Despite the cloud increase, most of the pattern obtained good data,
especially at 19000 ft on the NE side, and at 21000 ft on the south side.  The
Andros overpass was made as scheduled, but I do not know whether the cloud
conditions were considered suitable.

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