Advanced Vertical Atmospheric Profiling System

The Advanced Vertical Atmospheric Profiling System (AVAPS) is the dropsonde system for the Global Hawk. The Global Hawk dropsonde is a miniaturized version of standard RD-93 dropsondes based largely on recent MIST driftsondes deployed from balloons. The dropsonde provides vertical profiles of pressure, temperature, humidity, and winds. Data from these sondes are transmitted in near real-time via Iridium or Ku-band satellite to the ground-station, where additional processing will be performed for transmission of the data via the Global Telecommunications System (GTS) for research and operational use. The dispenser is located in zone 61 in the Global Hawk tail and is capable of releasing up to 88 sondes in a single flight.

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ER-2 High Altitude Dropsonde

Measures the vertical profile of atmospheric temperature, pressure, relative humidity, and wind speed and direction as the sonde falls from altitude to ocean surface.

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Dropsondes - DC-8

DC-8 dropsondes measure the vertical profile of atmospheric temperature, pressure, relative humidity, and wind speed and direction as the sonde falls from altitude to ocean surface.

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Airborne Expendable Conductivity Temperature Depth Probe

The AXCTDs measure the ocean salinity, or saltiness (proportional to conductivity), and temperature, which are necessary 1) for computing ocean density, stability and buoyancy, and 2) for identifying different ocean water masses.

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