Radar output is even incorporated into numerical weather prediction models to improve analyses and forecasts. Raw images are routinely used and specialized software can take radar data to make short term forecasts of future positions and intensities of rain, snow, hail, and other weather phenomena. Since then, weather radar has evolved on its own and is now used by national weather services, research departments in universities, and in television stations' weather departments. Soon after the war, surplus radars were used to detect precipitation. Techniques were developed to filter them, but scientists began to study the phenomenon. Both types of data can be analyzed to determine the structure of storms and their potential to cause severe weather.ĭuring World War II, radar operators discovered that weather was causing echoes on their screen, masking potential enemy targets. Modern weather radars are mostly pulse-Doppler radars, capable of detecting the motion of rain droplets in addition to the intensity of the precipitation. Weather radar, also called weather surveillance radar ( WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.). ![]() The improved weather-data quality will also allow for more effective use of the information in other areas, such as water management, as radar images are used to understand the effects of precipitation on drainage basins, in particular in support of flood forecasting by provinces.University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction For example, weather-radar imagery is used to help in safely routing planes around severe weather. ![]() Better serving weather-sensitive industriesĮconomic sectors sensitive to weather events such as agriculture, natural resources, fisheries, construction, aviation, tourism, transportation, retail, and investors will benefit from higher data quality and consistency for severe-weather events as weather information is an important part of their strategic planning. Extending Doppler coverage of the weather-radar network will also allow for better overlap of neighbouring radars in case of an outage. Doubling the Doppler range will give Canadians greater lead time to protect themselves and their families from tornadoes and other severe weather. The new radars will also have an extended severe-weather detection range to cover more of Canada, increasing the Doppler range to 240 kilometres per radar from the current 120 kilometres. As a result, they will issue more precise and timely weather watches and warnings for these significant weather events, giving Canadians more lead time to take appropriate actions to protect themselves, their family, and their property from the effects of severe weather. This technology will also enable better identification and removal of non-meteorological targets such as birds, bugs, and debris from the data. These state-of-the-art radars will have fully integrated dual-polarization technology, which will enable forecasters to better distinguish between rain, snow, hail, and freezing rain as well as better discern the size, shape, and variety of precipitation particles. Halfmoon Peak, BC (Vancouver Island replacement site) (CASHP)ĭual polarization: a leading-edge technology ![]() Mont Apica, QC (Lac Castor replacement site) (CASMA) Shuniah, ON (Superior West replacement site) (CASSN) ![]() Current S-band deployment schedule (as of January 31, 2023) OrderĬold Lake, AB (Jimmy Lake replacement site) (CASCL)
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