Vertical Motion Sensing by Parachute Dropsonde

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  • 1 Utah Water Research Laboratory, Utah State University, Logan 84322
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Abstract

A vertical motion sensor based upon radiosonde instrumentation is developed for use in measuring disturbances with vertical velocities typically exceeding about 10 cm s−1. The sensor is carried aloft by balloon and released at any desired altitude, whereupon a parachute controls the fallspeed relative to the airflow. A description of the system, its use, and examples of measurements in winter orographic flow are given.

Abstract

A vertical motion sensor based upon radiosonde instrumentation is developed for use in measuring disturbances with vertical velocities typically exceeding about 10 cm s−1. The sensor is carried aloft by balloon and released at any desired altitude, whereupon a parachute controls the fallspeed relative to the airflow. A description of the system, its use, and examples of measurements in winter orographic flow are given.

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