Mission Summary
20140823I1 Aircraft 43RF
TDR Experiment into Tropical Disturbance AL96

Aircraft Crew (43RF)
Aircraft CommanderJustin Kibbey
Co-pilotRobert Mitchell
Co-pilotScott Price
NavigatorPete Siegel
Flight EngineerJoe Klippel
Flight EngineerChris Lalonde
Flight DirectorIan Sears
Flight DirectorMike Holmes
System EngineerDana Naeher
Data TechnicianJoe Greene
AVAPSJeff Smith

Scientific Crew (43RF)
LPSSim Aberson (HRD)
DropsondesHua Chen (HRD)
RadarKathryn Sellwood (HRD)
IWRAPJoe Sapp (NESDIS)
IWRAPSteve J Frasier (NESDIS)
GuestKyle Smith (UFla)

Mission Plan :


Proposed track

NOAA43 will conduct an EMC-tasked TDR Experiment into Tropical Disturbance AL96 that eventually was named Cristobal, which was moving northward through the Turks and Caicos Islands. The proposal was for a butterfly pattern, three passes through the center of the storm, and return to MacDill. The aircraft will take off from MacDill AFB, FL at 1800 UTC and recover at MacDill AFB, FL at 0130 UTC.

TDR MISSION PLAN: Cristobal
Hurricane Research Division
August 22, 2014
Aircraft: N43RF
Proposed takeoff: 23/1800Z
TURN LOCATIONS
# LAT LON RAD/AZM LEG TOTAL TIME
deg min deg min nm/dg nm nm hr:mn
222 0073 18100/270 613.613. 2:41
322 0069 42100/090 200.813. 3:33
423 2770 37100/030 100.914. 4:00
520 3372 23100/210 200.1113. 4:53
620 3370 37100/150 100.1214. 5:20
723 2772 23100/330 200.1414. 6:13
Mission Summary :

Take off Landing
MacDill AFB, FL17:56 UTC MacDill AFB, FL01:36 UTC


Figure 2. 1745Z Visible and IR satellite photos of Cristobal

At takeoff time, the system was still not named a depression, even though there was moderate convection that seemed to be rotating about a center. The mission was largely flown as planned, with three passes through the 'center.' Because the system was in the genesis stage, the radius of maximum wind speed was very large; due to the distance from Tampa, the leg lengths were too short to reach this maximum, though it was seen in the three radar analyses that were completed. By the end of the flight, there were a number of intense convective cells with 50-dBZ reflectivity seen on the lower fuselage radar toward the southeast of the previously sampled center. It appeared that a center was trying to form there, and may have overtaken the previous center. During the flight, the old center was disorganized, as seen by the Doppler analyses, and was tilted toward the southeast.

14 sondes launched, No AXBTs

Mission Evaluation:


Figure 3. Doppler wind analyses from 1 km to 11 km

Overall, the flight was mainly uneventful, but it is a very good starting point for the subsequent flights into the storm, and may be a good genesis case for further study.

Problems :

The lower-fuselage radar locked up a few times, but was reset successfully each time. The flight director set incorrect Mission ID at the beginning of the flight, so first three sondes (and lots of HDOBS had to be resent with corrections. The lower-fuselage radar was in wedge mode during lass pass for Ocean Winds.

Sim Aberson
Nov. 4, 2014


Mission Data :

Flight Director's log | Flight Director's manifest | Lead Project Scientist form | Radar scientist form | Dropsonde scientist form NetCDF


Page last updated Nov. 20, 2014
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