CE 442 Hydraulics Engineering Exam with Questions and Answers

CE 442 Hydraulics Engineering Exam with Questions and Answers Radar networks have the most effective coverage of precipitation _____. ANSWER x if they are close together x in convective situations Radar-derived precipitation has which of the following characteristics that don't apply to rain gauge measurements? ANSWER x It has good space and time resolution. x It is remotely sensed data. Because rain gauges are surface based, direct measurements, they provide _____. ANSWER estimates with different types of errors than radars Dual pol radar techniques will likely result in more accurate derived rainfall rates because it will provide guidance to help distinguish _____. ANSWER x ice from liquid x hydrometeors from non hydrometeors x particle shapes Satellite rainfall estimates are generally higher resolution than radar estimates. ANSWER True For typical raindrops (about 2-mm diameter) expect a _____% loss in gauge catch for every wind speed increase of 1 mph. This is _____% for every 1 m/s. ANSWER 1 | 2.2 A Z-R relationship provides good _____ if it correctly represents the _____. ANSWER