![]() Using NOAA’s P-3 reconnaissance aircraft as a deployment vehicle, the sUAS collected high-frequency (>1 Hz) measurements in the turbulent boundary layer of hurricane eyewalls, including measurements of wind speed, wind direction, pressure, temperature, moisture, and sea surface temperature, which are valuable for advancing knowledge of hurricane structure and the process of hurricane intensification. Bulletin of the American Meteorological Society, 101(2), E186-E205.Ībstract: Unique data from seven flights of the Coyote small unmanned aircraft system (sUAS) were collected in Hurricanes Maria (2017) and Michael (2018). Eye of the storm: observing hurricanes with a small unmanned aircraft system. Thus, conical scans of the ocean surface are repeated every 2 s (0.25 km at 125 m/s ground speed).Ĭione, J. The antenna is rotated in azimuth at 30 rpm. The C-SCAT conically scans the ocean surfaceobtaining backscatter measurements from 20° to 50° off nadirĬ-Band Scatterometer (C-SCAT) The C-SCAT antenna is a microstrip phased array whose main lobe can be pointed at 20°, 30°, 40°, and 50° off nadir. They activate upon hitting the ocean surface and radio sea temperature, salinity, and current information back to computers aboard the aircraft.Īmong the suite of airborne remote sensing instruments available on the WP-3D aircraft for the purpose of measuring surface winds in and around tropical cyclones are the Stepped Frequency Microwave Radiometer and the C-band scatterometer (C-SCAT). Oceanographic instruments may be deployed from the WP-3D aircraft either from external chutes using explosive cads or from an internal drop chute. They are released from the both the WP-3D and G-IV aircraft over data-sparse oceanic regions.Īirborne eXpendable BathyThermographs (AXBT)Īirborne eXpendable Current Profilers (AXCP)Īirborne eXpendable Conductivity Temperature and Depth probes (AXCTD) The G-IV aircraft has a nose and a tail radar too.ĭropwindsondes are deployed from the aircraft and drift down on a parachute measuring vertical profiles of pressure, temperature, humidity and wind as they fall. ![]() The lower fuselage and tail radars are used for operational and research purposes. The nose radar (a solid-state C-band radar with a 5° circular beam) is used strictly for flight safety and is not recorded for research purposes. Each WP-3D aircraft has three radars: nose, lower fuselage, and tail. ![]()
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