CE442 HYDRAULICS ENGINEERING EXAM
QUESTIONS AND ANSWERS
Radar networks have the most effective coverage of precipitation _____.
- ANSWER x if they are close together
x in convective situations
Which of the following characteristics of radar-derived precipitation 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 rainfall rate estimates | drop size distribution
The best rain gauge measurement will occur with _____. - ANSWER x
gauges near the ground
x no wind
x liquid hydrometeors
, x big raindrops
The Field Bias Mosaic may be the most appropriate choice with which of
the following issues? - ANSWER Radar calibration problems
The MPE Gage Table compares gauge reports and grid values at
_____. - ANSWER gauge locations
Components of the hydrologic cycle include precipitation, condensation,
surface runoff, and ________ - ANSWER evaporation
The percent of available freshwater is ______ of the total water on the
Earth. - ANSWER less than 1%
Springs are fed from _______ - ANSWER groundwater
In addition to weather conditions, which of the following has a direct
influence on plant transpiration? - ANSWER Plant type, plant canopy
density, plant coverage
______-type soils have larger pore spaces and allow for greater
infiltration and percolation than _____ -type soils, which have more pore
space and can hold more water. - ANSWER sandy, clay
The Multisensor Precipitation Estimator provides analysis of gridded
precipitation accumulation using information from which of the following?
- ANSWER x Radar
x Rain gauges
x Forecast models
Which of the following MPE functions is very important for assuring
appropriate adjustments to radar QPE fields? - ANSWER Evaluating and
editing gauge reports
Why might the Multisensor Mosaic be the best option in areas of radar
blockage? - ANSWER It uses gauge-based QPE in areas of poor radar
coverage.
QUESTIONS AND ANSWERS
Radar networks have the most effective coverage of precipitation _____.
- ANSWER x if they are close together
x in convective situations
Which of the following characteristics of radar-derived precipitation 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 rainfall rate estimates | drop size distribution
The best rain gauge measurement will occur with _____. - ANSWER x
gauges near the ground
x no wind
x liquid hydrometeors
, x big raindrops
The Field Bias Mosaic may be the most appropriate choice with which of
the following issues? - ANSWER Radar calibration problems
The MPE Gage Table compares gauge reports and grid values at
_____. - ANSWER gauge locations
Components of the hydrologic cycle include precipitation, condensation,
surface runoff, and ________ - ANSWER evaporation
The percent of available freshwater is ______ of the total water on the
Earth. - ANSWER less than 1%
Springs are fed from _______ - ANSWER groundwater
In addition to weather conditions, which of the following has a direct
influence on plant transpiration? - ANSWER Plant type, plant canopy
density, plant coverage
______-type soils have larger pore spaces and allow for greater
infiltration and percolation than _____ -type soils, which have more pore
space and can hold more water. - ANSWER sandy, clay
The Multisensor Precipitation Estimator provides analysis of gridded
precipitation accumulation using information from which of the following?
- ANSWER x Radar
x Rain gauges
x Forecast models
Which of the following MPE functions is very important for assuring
appropriate adjustments to radar QPE fields? - ANSWER Evaluating and
editing gauge reports
Why might the Multisensor Mosaic be the best option in areas of radar
blockage? - ANSWER It uses gauge-based QPE in areas of poor radar
coverage.
