Weather
radar, also known as Doppler weather radar and weather surveillance radar, is
used to understand the climatic condition and is widely used in climatological
and meteorological applications. Weather radar helps monitor large weather
systems such as systems used to monitor storms. Thus, there is a growing demand
for weather radar in the aviation industry, as they control aviation safety and
plan to opt out of weather-affected activities. Basically, radar is an
instrument that uses radio waves to detect the movement of moving bodies of
water or other items of interest, such as ships and airplanes.
Today, there
are more weather
radars than earlier models. Earlier radars used the same basic
principle of detecting stationary precipitation and the process was simple: the
radar was pointed in the right direction, and radio waves were transmitted,
reflected, and received by the surface layers of the air. Because of its unique
nature, radar has enabled scientists to study many aspects of the weather in
much greater detail than was possible before, such as the development of
computerized weather forecasts and lightning detection.
Earlier, the
radar devices were very large and heavy, and so required a trained operator who
could control them. Today, weather radar is increasingly smaller and more
lightweight, which makes them easier to operate. Radars also depend on a number
of different technologies, some of which are still very sensitive, such as
Doppler technology, which is used in weather radar to determine the speed of
precipitation and wind. Some weather radars are run by the U.S. Defense Mapping
Agency and the National Weather Service.
A number of
private meteorological services operate their own weather radar units. They
often use the same technology that government and national weather service use,
but they usually specialize in particular areas or topics. For example, there
are only a handful of meteorologists who actually have weather radar available
to them on a regular basis. Generally, private meteorological services operate
on local, county, and state levels. Weather radar is updated on a regular basis
so that it can provide organizations with up-to-date weather reports.
Weather
radar are widely used to provide accurate weather reports to the public and to
guide natural resource management practices. They also conduct research into
the causes and prevention of severe weather, preparing for severe weather
events as well as tracking weather patterns and pollution. Several government
agencies around the world use weather radars, such as the Air Force, Army,
Navy, NASA, ISRO, etc.
Modern weather
radar are mostly pulse-Doppler radar that can detect the motion of rain drops
in addition to the intensity of rainfall. The increasing adoption of new radar
is improving the weather prediction. The changes in the climatic conditions
increase the risk of extreme weather condition such as heat-waves, flooding,
and droughts. Thus, weather radars are widely used for flood warnings,
hydrological applications, and weather forecasting, as they provide qualitative
and quantitative data about the atmosphere. The data collected by weather radar
is then processed to identify changes in the climate and environment.
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