Disdrometers measure the drop size distribution of rain. Two Distromet Joss Waldvogel Impact Disdrometer RD-69 are installed at Chilbolton and Sparsholt and work by converting the vertical momentum of a falling drop into signals whose amplitude depends on the diameter of the impacting drop. A conical styrofoam body is used to transmit the mechanical impulse of an impacting drop to a set of two moving coil systems in magnetic fields.
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More Information (under review)
Information about the Disdrometer can be found on the STFC (Science and Technology Facilities Council) Chilbolton website.
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