Texas Tech University scientists will also deploy the A probe (a.k.a. Probe 1 or P1) which utilizes a prop anemometer as the wind sensing instrument. It also features a shielded temperature and relative humidity probe, and a barometric pressure sensor.

Image ID: nssl0300, NOAA's National Severe Storms Laboratory (NSSL) Collection
Location: South Dakota, Hot Springs
Photo Date: 2009 May 22
Credit: Texas Tech University Severe Storm Research Team; VORTEX II

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