CURRENT AFFAIRS

2021

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The Doppler Weather Radars were inaugurated by Earth Sciences Minister Dr. Harsh Vardhan in which of the following state(s)?
A
Uttarakhand
B
Himachal Pradesh
C
Gujarat
D
Both A and B
Explanation: 

Detailed explanation-1: -Harsh Vardhan, Minister of Science & Technology, Earth Sciences and Health & Family Welfare along with other officials. Dr. Harsh Vardhan inaugurated Doppler Weather Radars at Mukteshwar (Uttarakhand) and Kufri (Himachal Pradesh). Doppler Weather Radars in Uttarakhand is 1st of its kind.

Detailed explanation-2: -Lieutenant Governor Manoj Sinhaand Union Minister of State, Dr Jitendra Singh today jointly inaugurated the X-Band Doppler Weather Radar at Banihal Top, during the 148th Foundation Day celebrations of India Meteorological Department.

Detailed explanation-3: -In 1964, scientists added a three-centimeter wavelength research Doppler radar to NSSL’s list of assets - a move that would revolutionize weather observation. This new radar allowed scientists to measure motion inside storms for the very first time, providing clues into the development of severe weather.

Detailed explanation-4: -Doppler radar sends the energy in pules and listens for any returned signal. The phase shift effect is similar to the “Doppler shift” observed with sound waves. With the “Doppler shift", the sound pitch of an object moving toward your location is higher due to compression (a change in the phase) of sound waves.

Detailed explanation-5: -The radar operations are particularly crucial during extreme weather events like heavy rainfall and data from these are used in predicting flash floods in local regions. With the latest additions, the IMD now has 33 operational radars in the country.

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