Lead Scientist | P. Black |
AXBT Scientist | P. Black |
Radar scientist | J. Gamache |
GPS Dropsonde | M. Black |
HRD Workstation | P. Dodge |
Mission Briefing:
This mission was designed to monitor the structure of a slow-moving, slowly developing hurricane and to monitor the ocean structure underneath and ahead of the storm.
Mission Synopsis<
The flight departed Bermuda International at 1730 UTC, August 27 and landed at Miami International/ Signature Aviation at 0230 UTC, August 28, a duration of 9 hours. Flight altitudes in Dennis were 14,000 ft. A butterfly XCDX pattern was flown and 4 penetrations were made (Fig. 1).
A well-defined eye was encountered with strongest convection in the north and west quadrants of the eyewall and weakest on the south and east. During the second half of the flight, convection became very active in bands in the southeast quadrant and lightning was frequent.
A total of 8 AXBTs were deployed, all CAD-launched. AXBTs were launched with GPS sondes at the 75 nmi radius east, northeast, north and northwest of the center, as well as in the eyewall along each leg. Clean signals were observed to 350 m on all AXBTs. 34 GPS sondes were launched and 26 sondes were transmitted (Table 1).
Efforts were made to transmit SFMR surface winds, but one frequency was bad and error checking routines designed to eliminate erroneous frequencies was not operating properly, nor was the error checking routines to flag high over-land brightness temperatures.
Problems:
Except for the SFMR frequency problem all aircraft systems performed flawlessly. Once again, ATC, New York required us the shift the pattern 1 degree south on the inbound leg to avoid an unannounced restricted area.
Peter Black
# |
Sonde ID |
Time (UTC) |
Lat (°N) |
Lon (°W) |
Comment |
1 |
984715200 |
27:18:18:00 |
31.300 |
-67.230 |
MBL WND 11509= |
2 |
991435072 |
27:19:04:00 |
28.840 |
-69.770 |
MBL WND 12514= |
3 |
991435008 |
27:19:39:00 |
28.230 |
-72.850 |
MBL WND 13022= |
4 |
991435072 |
27:19:57:00 |
27.860 |
-74.390 |
MBL WND 11532= |
5 |
985035200 |
27:20:04:00 |
27.490 |
-74.890 |
MBL WND 12039 LST WND |
6 |
990415104 |
27:20:12:00 |
27.040 |
-75.310 |
MBL WND 11045= |
7 |
991435008 |
27:20:30:00 |
25.920 |
-75.980 |
MBL WND 21015 EYE= |
8 |
991435008 |
27:20:50:00 |
24.900 |
-77.010 |
MBL WND 31038= |
9 |
991435008 |
27:21:06:00 |
24.130 |
-77.890 |
MBL WND 31025= |
10 |
991435008 |
27:21:30:00 |
23.500 |
-75.960 |
MBL WND 24026= |
11 |
991515008 |
27:21:50:00 |
24.970 |
-75.950 |
MBL WND 25040 LST WND |
12 |
991435072 |
27:22:09:00 |
26.440 |
-76.150 |
MBL WND 08568 LST WND |
13 |
991435072 |
27:22:20:00 |
27.240 |
-76.290 |
MBL WND 07551= |
14 |
991435072 |
27:22:41:00 |
28.430 |
-76.480 |
MBL WND 09522 LST WND |
15 |
991435072 |
27:23:00:00 |
27.780 |
-78.150 |
MBL WND 03522 SST 29 |
16 |
991435008 |
27:23:16:00 |
26.900 |
-77.280 |
MBL WND 04047= |
17 |
991435136 |
27:23:53:00 |
25.910 |
-76.650 |
MBL WND 34053= |
18 |
991435136 |
27:23:53:00 |
25.930 |
-76.670 |
MBL WND 34552 EYEWALL |
19 |
991435136 |
28:00:05:00 |
26.210 |
-75.960 |
MBL WND 16051 LST WND |
20 |
990845056 |
28:00:05:00 |
26.200 |
-75.950 |
MBL WND 16556 LST WND |
21 |
991435136 |
28:00:24:00 |
25.220 |
-75.140 |
MBL WND 20545 LST WND |
22 |
991037120 |
28:00:11:00 |
25.850 |
-75.950 |
MBL WND 20574 LST WND |
23 |
990845184 |
28:00:38:00 |
25.100 |
-74.160 |
MBL WND 16539= |
24 |
991515072 |
28:00:53:00 |
26.280 |
-73.820 |
MBL WND 13542= |
25 |
991037120 |
28:01:07:00 |
26.510 |
-74.890 |
MBL WND 13054 RAINBAND |
26 |
991515136 |
28:01:20:00 |
26.400 |
-75.930 |
MBL WND 13572 EYEWALL |
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