Unlike a rain gauge, a weather radar does not calculate or predict the level of precipitation in water measured in mm/h. Let's get into detail: how does a weather radar work? It is therefore a question of sending and receiving waves. An essential tool for any good gardener! Weather radar function for rain and snow forecastsīefore we go any further and begin to understand how weather radar can predict precipitation, let's look at the meaning of radar: "RAdio Detection And Ranging"
Connected to the Netatmo Smart Weather Station it allows you to have a clear and real-time overview of the water brought by rainfall. Go beyond rain forecasting: measure the level of water falling during rainfall with the Netatmo Smart Rain Gauge. Turning a wave into digestible rain and snow forecast information is not easy at first sight! It is the electronic system of the weather radar that controls all this directly and displays this data to the users. It is the processing of the raw signal by the weather radar that provides the data required by the operator: precipitation mapping and monitoring, extraction of meteorological or oceanographic parameters, rain or snow forecasts, etc. When the receiver receives the incoming signal, it is its job to process it. The radar must be carefully calibrated to withstand the megawatt power that the receiver receives. The duplexer is responsible for directing the wave to the antenna when transmitting or the return signal from the antenna to the receiver when receiving.Īs you have seen, there is only one antenna on the weather radar and it has two functions: firstly, it scatters the electromagnetic wave through the atmosphere, and secondly, it picks up the same wave backscattered by the target (raindrops or snow, more precisely hydrometeors). This wave is then fed to the antenna employing a waveguide. Also known as precipitation radar, weather radar is one of the main measuring devices for national meteorological services and other meteorological organisations.ĭisplaying real-time precipitation on a map of an entire territory, the weather radar is formidable for rain and snow forecasts.Ī monostatic radar (the most common weather radar) consists of a transmitter, from which a radio wave is emitted.
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