Mission Summary
20021003I Aircraft 43RF
Landfall/CBLAST in-storm mission into of Hurricane Lili

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Scientific Crew
Lead scientistPete Black
Workstation scientistMike Black
Radar scientistJohn Gamache
Sonde scientistsSim Aberson
SRA scientistEd Walsh (NASA)
Laser Altimeter scientistJoel Hazard (Scripps)
Guest scientistChris Cappella
Aircraft Crew (43RF)
PilotsCAPT Dave Tennesen
CDR Phil Kenul
LCDR Harris Halverson
NavigatorLCDR John Adler
Flight DirectorBarry Damiano
EngineerJeff Smith
Data TechnicanRay Tong
Electronics TechnicanDamon San Souci

Mission Briefing :

After HAIRSIN and Ocean Winds flights into Hurricane Lili, HRD planned for a flight during Lili's landfall on the Louisiana coast. Mobile observing teams from Texas Tech University (TTU), Clemson, and the University of Florida were heading for the Lousiana coast to deploy the SMART-R radar and several wind towers. They were joined late in the evening of 2 October by two portable Doppler radars from Univ. of Oklahoma, DOW-2 and DOW-3. The HIRT team from North Carolina alwo drove an instrumented vehicle to the region south of New Iberia, Louisiana.

Mission Synopsis :

NOAA 43 left MacDill Air Force Base at 1302 UTC, and descended to 6,000' at the IP ~200 km SSE of New Orleans at 1420. For the next two hours the plane sampled the storm environment just along the coast, dropping 20 GPS sondes along the coast and near the wind towers, especially the WEMITE tower on West Cote Blanche Island. Figure 1 shows the complete flight track, with sonde launch locations and portable observing sites.
Figure 2a is an LF radar image from NOAA 43's initial pass through the center of Lili. The CBLAST module began at 1623 when the aircraft desended to 900'. The plane flew an upwind and downwind pass at this alittude and then the aircraft descended to 600' for another leg. At 1702 the plane turned and ascended to 2000' for a crosswind leg. Because of the numerous oil rigs with heights of 200' to 300', the aircraft would not go below 600'. The crosswind legs were completed at 1740. The aircraft climbed to 14,000' and then made one south to north pass through the center over land (Figure 2b), turning west towards Lake Charles and then turning SE to head back to base. NOAA 43 landed at MacDill AFB later that day.

Evaluation :

This is probably the most complete data set collected in a landfalling hurricane (with the exception of the LCH radar data). Hurricane Lili has weakened considerably over night, yet some of the TTU towers measured hurricane-force winds. The wind towers measured winds in various exposures and environments and these data will be valuable for wind enginerring studies. Preliminary examination of the Tail Doppler radar data show them to be free of noise problems.
The flight crew also further practised flying low-altitude patterns for the CBLAST experiment. One important finding was the difficulty of flying these patterns near the Gulf Coast because of the oil rigs

Acknowledgements :

Barry Damiano, John Adler, and the flight crew flew a complicated pattern with thier usual dedication and attention to detail. Jeff Smith kept the radar running, and Ray Tong and Damon San Souci managed to keep up with our evolving plans for the GPS sonde drops.

Mission Data

One minute listing

Table 1
Center fixes
09:00 27° 42' 91° 42' NHC Official
15:00 29° 50' 92° 16' U.S. Air Force radar center
15:16 29° 52' 92° 18' NOAA 43
18:06 30° 31' 92° 27' NOAA 43

PDF plots of dropsonde data

Table 2
GPS sonde drops
Drop # sonde ID TIME
1601433507815440429.62°91.74°no winds
1701451506115454829.67°91.87°no winds
1901451501015593829.68°91.86°no winds
Several of these sondes had late launch detects and late winds.

Table 3
AXBT drops
14:34 28° 39' 89° 31'

Table 4
Locations of mobile intruments deployed during the landfall
Latitude Longitude Location
30° 12' 27.72"91° 59' 23.64" SMART-R Lafayette Regional Airport
30° 02'91° 54' DOW3 Acadiana Airport (New Iberia)
30° 42.5'92° 06.5' DOW2 St Landry Parish Airport (Opelousas)
30° 05.08'91° 00.37' Clemson/U Fla near Cane Air Field
29° 54.84'91° 45.56' " New Iberia
30° 22.07'91° 05.53' " S of Baton Rouge
30° 12.88'92° 02.68' " Cajun Field, Lafayette
29° 55' 06.3"92° 14' 50" TTU tower at Old Harrington Landing Field
29° 55' 07"92° 14' 45.9" TTU tower 2 " " (near Cow Island)
29° 45' 4.62"91° 43' 30.36" TTU Wemite # 2, W. Cote Blanche Island (30' salt dome)
30° 01' 48.96"91° 52' 40.74" TTU tower Acadiana Airport
29° 42' 32"91° 20' 40.2" TTU 3m tower at Williams Memorial Airport
29° 42' 48.5"91° 20' 9.8" TTU 3m Tower 2 at " " " ( near Patterson )
31° 10' 40"92° 24' 38" LAIS Dean Lee (E of Woodworth, LA)
30° 14' 28"92° 20' 51" LAIS Rice (E of Crowley, LA)
29° 57' 54"91° 42' 54" LAIS Iberia (NW of Jeanerette, LA)
29° 59' 08"91° 04' 45" LAIS Paincourtville (W of Paincourtville, LA)
29° 26' 28.2"92° 03' 40.8" CSI-3
29° 10'90° 35' CSI-11
29° 03.2'90° 32' CSI-5
28° 52'90° 29' CSI-6
Some locations were supplied by the teams, others were read off of aeronautical chart CH-24.

DOW - Doppler On Wheels (University of Oklahoma/NSSL)
SMART-R - Texas A&M University/NCAR/Texas Tech
TTU - Texas Tech University Wind Engineering
LAIS - Louisiana Agroclimatic Information System
CSI - WAVCIS-LSU Coastal Studies Institute

Flight Track Details

Overall Flight Track

Flight track

Flight track ferry in

Flight track ferry out

Data Values

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