Precipitation measurement
The problem of pluvial flood risk is one of the environmental challenges in hydrology. Understanding and modeling the variability of the rainfall is very important. This is why different techniques of measurement were developed.
Question
List the different measurement devices of precipitation.
Rain gauges
Disdrometers
Weather radars
Question
List some pros and cons of these devices.
Rain Gauges:
Low cost
Easy to install
Point-wise measurement
Errors due to environmental conditions
Disdrometer:
Measures the drop size distribution
Velocity of falling hydro-meteors
Expensive compared to rain-gauges
Point-wise measurement
Weather Radar:
Spatial and temporal measurement
Wind velocity measurement
Measures the reflection of the precipitation echoes : affects the accuracy
Very expensive devices
