A Rain Gauge for the Measurement of Finescale Temporal Variations

A Rain Gauge for the Measurement of Finescale Temporal Variations

A rain gauge is described that quantizes rainwater collected by a funnel into equal-sized drops. Using a funnel of 150-mm diameter, the quantization corresponds to 1/160 mm of rainfall, enabling the measurement of low rainfall rates and the attainment of a fine temporal resolution on the order of 15...

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Veröffentlicht in:Journal of atmospheric and oceanic technology 1998-02, Vol.15 (1), p.127-135
Hauptverfasser: Stow, CDavid, Bradley, Stuart G, Farrington, Keith E, Dirks, Kim N, Gray, Warren R
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container_end_page 135
container_issue 1
container_start_page 127
container_title Journal of atmospheric and oceanic technology
container_volume 15
creator Stow, CDavid
Bradley, Stuart G
Farrington, Keith E
Dirks, Kim N
Gray, Warren R
description A rain gauge is described that quantizes rainwater collected by a funnel into equal-sized drops. Using a funnel of 150-mm diameter, the quantization corresponds to 1/160 mm of rainfall, enabling the measurement of low rainfall rates and the attainment of a fine temporal resolution on the order of 15 s without unduly large sampling errors. Two drop-producing units are compared and an operational rain gauge design is presented. Field comparisons with conventional rain gauges are made, showing excellent correlations for daily rain totals, and intercomparisons between clusters of dropper gauges are also given. Examples of highly resolved rainfall events are shown demonstrating the ability to measure low rainfall accumulations and also coherent high intensity events of short duration, which are not detectable with conventional rain gauges.
doi_str_mv 10.1175/1520-0426(1998)015<0127:ARGFTM>2.0.CO;2
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source American Meteorological Society; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection
title A Rain Gauge for the Measurement of Finescale Temporal Variations
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