1 / 20

National Center for Atmospheric Research (NCAR) Centre National d’Etudes Spatiales (CNES)

Driftsonde Experiences during T-AMMA Stratospheric balloons to study African monsoon and formation of cyclones. National Center for Atmospheric Research (NCAR) Centre National d’Etudes Spatiales (CNES) [French National Center for Space Studies]. Driftsonde Team

helki
Download Presentation

National Center for Atmospheric Research (NCAR) Centre National d’Etudes Spatiales (CNES)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. DriftsondeExperiences during T-AMMAStratospheric balloons to study African monsoonand formation of cyclones National Center for Atmospheric Research (NCAR) Centre National d’Etudes Spatiales(CNES) [French National Center for Space Studies] Driftsonde Team Terry Hock, Dave Parsons, Jack Fox, Hal Cole, Joe VanAndel, Keith Romberg, Chip Owens, Dean Lauritsen, Charlie Martin Nov. 13, 2006 OFAP

  2. Driftsonde Concept • Cost-effective dropsonde observations of wind, temperature, and humidity to fill critical gaps in coverage over oceanic and remote artic and continental regions over days to weeks.

  3. AMMA Driftsonde Project Goals & Highlights Support of the THORPEX International Science and Implementation Plans for demonstration tests of new technologies for the delivery of in-situ sensing The tests were supported by CNES for the ballooning (French Space Agency) Support within the US by NCAR and NOAA/THORPEX for the driftsonde gondola and new dropsondes 8 Balloon flights 24 to 40 Miniture Dropsondes per balloon flight Launch Location Zinder, Niger Flight Operations Center Paris and Boulder Engineering team effort between CNES & NCAR Flights 10+ days CNES Developed Super Pressure Balloon and Flight Control System NCAR Developed Driftsonde Gondola System, Miniture Dropsonde and Ground Sounding Software

  4. CNES-NCAR Team Collaboration Engineering & Science Integration • French/CNES Ballooning Group • Developing a 12 meter super- pressure Balloon specifically for Driftsonde. • Provided 10 balloons • CNES gondola for communications, tracking, safety and recovery • system, transponder • Prepared launch facility logistics & provided staff at Zinder, Niger • Control & operations center in Paris • Coordinated with Air Traffic Control • NCAR/EOL Driftsonde Group • Provided 8 Driftsonde gondolas, • Satellite Communications • Sounding system • GPS tracking info • 270 MIST Sondes • Ground support crew in Zinder, Niger • NCAR staff at at the CNES control and operations center in Paris. • Secondary Operations Center in Boulder • System control of sonde releases • Sonde data post processing

  5. Scientific Flight Operations Center & Flight Control Paris, France Flight Control Boulder, USA Balloon Launch Facility Zinder, Niger T-AMMA Launch and Flight Operations Locations

  6. Zinder Flight Operations Sonde Loading Final Testing Payload Balloon Inflation

  7. CNES 12 meter Super Pressure Balloon Driftsonde Flight Train ~ 12meters Total payload weight 42 kg Pressure- Temperature Sensors & Gas Relief valve Parachute RadarReflector ~ 20meters CNESPayload AircraftTransponder/StrobeLight Driftsonde Gondola (21kg) Temperature Sensors

  8. Flight #1 Driftsonde LaunchAugust 28th 2006

  9. Miniature In-situ Sounding Technology (MIST Sonde developed at NCAR) GPS Antenna • MIST Design Criteria & Motivation • - Low cost (current aircraft dropsondes cost >$700) • - Small (credit card size) • - Lightweight (Gondola to carry 80 sondes) • - Pressure derived from GPS & hydrostatic equation (using known launch pressure) • - Operate at -70º C (20km altitude) • MIST Sonde Specification • Size: 4.62 cm diameter, length 22.86 cm • Weight: 145 grams • Fall rate ~10 m/s at surface, cone parachute • Sensors: Temperature, Humidity, Winds & Position • 50 mil Thermsitor • Humicap w/temperature sensor for substrate • 16 channel GPS receiver • Sensor sample rate 0.5 secs • Remote control Power On & Sonde Release GPS Receiver (16 channel) 2 Microprocessors Transmitter (400 MHz) Humidity Sensor (humicap w/substrate temperature) TemperatureSensor (50 mill bead thermistor)

  10. Gondola Electronics- sonde receiver system Lower Part of Gondola Iridium Satellite Transceiver Lithium Batteries Miniature Dropsonde Upper Part of Gondola NCAR System Electronics

  11. AMMA Driftsonde Flights • 6 successful missions from the 8 Driftsondes launched

  12. Driftsonde AMMA Sounding Locations

  13. Sonde release Driftsonde Predicted Flight Trajectories

  14. Driftsonde dataDriftsonde 3 in the vicinity of tropical cyclone Florence Tropical cyclone Florence Sondes released from driftsonde #3

  15. Disturbed Environment Near Florence Deepening Moist Layer African PBL

  16. Disturbed Environment Near Florence Increasing Low-level Winds African Easterly Jet

  17. Driftsonde dataDriftsonde 4 in the vicinity of tropical cyclone Gordon Tropical cyclone Gordon Sondes released from driftsonde #4

  18. Thank you for your attention

More Related