HR: 1330h
AN: H23A-01    [Abstracts]
TI: Effect of Wind and Out-of-Levelness on Rain Gauge Catch -- Revisiting an Old Problem
AU: * Steiner, M
EM: msteiner@princeton.edu
AF: Princeton University, Department of Civil and Environmental Engineering, Princeton, NJ 08544 United States
AB: Gauge measurements are widely used as the true rainfall reaching the land surface for a variety of applications, ranging from calibration of remotely sensed rainfall estimates to water budget studies. The quality of rain gauge data, however, may be affected by human or animal interference, mechanical or electric failures, or debris that settled inside the collector funnel hindering the rainwater from reaching the measuring device in a timely fashion or at all. Other sources of potential rainfall measurement errors relate to the wind effect on the gauge catch and whether the instrument's orifice is leveled. These two particular effects are revisited here. It is shown that out-of-level gauges may either miss or catch too much rainwater in windy conditions, with associated errors potentially amounting to tens of percent of the total catch.
DE: 1854 Precipitation (3354)
DE: 1894 Instruments and techniques
DE: 3354 Precipitation (1854)
DE: 3394 Instruments and techniques
SC: Hydrology [H]
MN: 2005 Joint Assembly