Outline 2004 Hurricane Drifter Deployment Overview 2004 Hurricane Drifter Deployment Overview...
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Transcript of Outline 2004 Hurricane Drifter Deployment Overview 2004 Hurricane Drifter Deployment Overview...
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2004 Hurricane Drifter Deployment 2004 Hurricane Drifter Deployment OverviewOverview
Atmospheric Pressure Results from Atmospheric Pressure Results from Hurricanes Fabian (2003), Frances Hurricanes Fabian (2003), Frances (2004) and Jeanne (2004)(2004) and Jeanne (2004)
Wind Data Results from Hurricane Wind Data Results from Hurricane FabianFabian
Review of 2003 Experiment
What We DroppedWhat We Dropped
16 Minimet 16 Minimet DriftersDrifters
Drifter LifeDrifter Life
2 Did not transmit data2 Did not transmit data 3 Quit working within 2 hours of 3 Quit working within 2 hours of
deploymentdeployment 3 Transmitted from drop site, but died3 Transmitted from drop site, but died
before complete hurricane before complete hurricane passagepassage
8 Provided data through hurricane 8 Provided data through hurricane and and beyondbeyond
What We LearnedWhat We Learned
Acoustic wind Acoustic wind sensor saturated at sensor saturated at high windshigh winds
Sealing of some Sealing of some buoys not properly buoys not properly donedone
Buoys can be Buoys can be effectively air effectively air dropped in front of dropped in front of a hurricanea hurricane
2004 Experiment2004 Experiment
14 Minimet14 Minimet 8 ADOS8 ADOS 14 SVP with 100m drogue14 SVP with 100m drogue 3 Standard SVP-B3 Standard SVP-B
39 Total Buoys39 Total Buoys
Buoy SensorsBuoy Sensors
ADOSADOS 100m Thermistor 100m Thermistor
ChainChain Barometer (+/- 1mb.)Barometer (+/- 1mb.) SST Thermistor (+/- SST Thermistor (+/-
0.1ºC)0.1ºC) Wind Direction – Wind Direction –
Compass/Vane (+/-10º)Compass/Vane (+/-10º) Wind Speed – WOTAN Wind Speed – WOTAN
(+/-??) (+/-??) Irradiance SensorsIrradiance Sensors
MinimetMinimet Barometer (+/- 1mb.)Barometer (+/- 1mb.) Thermistor (+/- Thermistor (+/-
0.1ºC)0.1ºC) Submergence Sensor Submergence Sensor
(drogue on/off)(drogue on/off) Wind Direction – Wind Direction –
Compass/Vane (+/-Compass/Vane (+/-10º)10º)
Wind Speed – Wind Speed – WOTAN (+/-??) WOTAN (+/-??)
Drifter LifeDrifter Life
35 of 39 Drifters transmitted data 35 of 39 Drifters transmitted data through the hurricanethrough the hurricane
37 of 39 drifters eventually 37 of 39 drifters eventually transmitted datatransmitted data
1 never worked1 never worked 1 stopped working after 1 day1 stopped working after 1 day
2004 Array – Frances
Wind Direction Data in Hurricane Fabian
Drifter av Diff rms N av Diff rms N1. 41583 21 53 178 53 64 13
2. 41578 -1 33 368 -16 67 433. 41581 5 35 361 -8 52 294. 41582 0 40 367 -7 63 615. 41584 1 31 373 -11 65 356. 41585 -1 30 338 -2 23 407. 41587 1 32 397 -7 46 258. 41588 -4 39 384 -11 32 41
2.-8. total 0° 35° 2588 - 9° 53° 274
Collocated Wind Direction statistics No Rain Rain
The EndThe End