Weather Forecasting Current Affairs

Indigenously developed S-band Doppler Weather Radar commissioned in Kochi  

A state-of-the-art, indigenously developed S-band doppler weather radar (DWR) of India Meteorological Department (IMD) was commissioned at Palluruthy in West Kochi, Kerala.

It has been manufactured by Bharat Electronics Limited (BEL) based on the indigenous technology provided by ISRO. It joins the latest in a chain of 27 such advanced radars already installed in various parts of the country.

The S-band DWR is capable of predicting weather events such as storms and cyclones, other severe weather conditions occurring in 500-km radius from Kochi with increased accuracy.

Doppler weather radar

Doppler weather radar is an observational tool for monitoring and predicting severe weather events such as hailstorms, thunder storms, cyclones and tornados. It uses the Doppler effect by bouncing a microwave signal off a desired target to produce velocity data. This data helps in analyzing object’s motion by altered the frequency of the returned signal. It mainly gives information about wind velocity and also about precipitation. 

DWR can provide area specific rain and storm warnings which are beneficial for disaster management and emergency response, aviation and related services. It can be used for wind speed measurements during cyclones and thunderstorms which is not possible in conventional weather radar. Thus, it helps in providing improved warning and better weather forecasts.

Doppler effect: It is an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move towards (or away from) each other.

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Indian Navy unveils Integrated Automatic Aviation Meteorological System at Rajali Air Station

The Indian Navy has unveiled the Integrated Automatic Aviation Meteorological System (IAAMS) at Rajali Air Station in Tamil Nadu.

The aim of IAAMS is to modernise the meteorological infrastructure of the nine Naval Air Stations (NAS). It is expected to bring accuracy in weather monitoring mechanism in the Indian Navy.

Key Facts
  • IAAMS is equipped with the state-of-the-art meteorological sensors viz., Radar Vertical Wind Profiler, Ceilometer, Transmissometer and Automatic Weather Observation System.
  • It undertakes automatic and continuous recording of relevant weather parameters that are vital for accurate weather forecasting.
  • It has a special alarm feature that alerts the duty staff during abnormal change of weather parameters that may affect safe flying operations.
  • It can also provide automatic dissemination of routine weather reports as per standards of World Meteorological Organisation (WMO) to other air stations and Air Traffic Controller towers without human intervention.
Background

The IAAMS is an ambitious project of the Indian Navy to modernise the meteorological infrastructure of the nine Naval Air Stations (NAS). Installation of the system at remaining eight stations is expected to be completed by March 2019. After completion, the project will give a major fillip to aviation safety, through automation of weather monitoring process.

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