Indigenously developed Polarimetric Doppler Weather Radar at Cherrapunjee dedicated to Nation by the Hon'ble Prime Minister of India
Shri Narendra Modi, Hon'ble Prime Minister of India dedicated the first Indigenously developed Polarimetric Doppler Weather Radar (DWR) installed at Cherrapunjee, to Nation on May 27, 2016 remotely from Polo ground in Shillong, Meghalaya. The DWR has been designed and developed by Radar Development Area, ISRO Telemetry Tracking and Command Network (ISTRAC), ISRO and manufactured by Bharat Electronics Limited (BEL), Bengaluru. The DWR was realised with active support from Regional Meteorological Centre (RMC), Guwahati of India Meteorological Department (IMD), and North Eastern Space Applications Centre (NESAC), Department of Space, Umiam, Shillong.
Shri Narendra Modi, Hon'ble Prime Minister of India dedicating the Polarimetric DWR, Cherrapunjee to Nation in the August presence of Shri Jitendra Singh, Hon'ble Union Minister of State (Independent Charge) for DONER, Personnel Public Grievances and Pensions, PMO, DAE, DOS. Dr Y V N Krishna Murthy, Scientific Secretary, ISRO is also seen
Hon'ble Prime Minister while dedicating the DWR to nation told that "We all know Cherrapunjee, for being the place that receives the highest rainfall in the World. Today, another feather has been added to its cap. The Doppler Weather Radar at Cherrapunjee has been dedicated to the Nation. I congratulate the Indian Space Research Organisation; Bharat Electronics Ltd.; and the Indian Meteorological Department for setting up this Radar in Cherrapunjee.
The North East, a land of beauty and adventure, has been hit by several natural calamities in the recent past, on account of heavy rain and landslides. This Weather Radar System will enable better weather forecasts, especially for the North Eastern region. This should help in minimising the threat posed by extreme weather conditions."
The Doppler Weather Radar (DWR) provides advance information, enhancing the lead-time so essential for saving lives and property, in the event of natural disaster associated with severe weather. Though the conventional radars are able to track and predict cyclones, the DWR provides detailed information on storm’s internal wind flow and structure. The severity of the weather systems can thus be quantitatively estimated more accurately than ever before and more precise advance warnings can be generated for saving human lives and property. The polarimetric capability of the Radar will significantly improve the accuracy of rainfall estimation leading to accurate and timely flash flood warnings.
The DWR, being the first S-band (operating at 2.7 - 2.9 GHz) dual polarimetric Doppler Weather Radar can detect Weather phenomenon upto 500 km. This system installed at a place that receives the highest rainfall in Planet Earth, shall open up tremendous research opportunities in the areas of monsoon dynamics, Cloud Physics, impact of orography in precipitation process, precipitation characterisation, thunderstorm and hailstorm genesis and evolution, etc. The data from the DWR is also expected to support a host of operational programmers of IMD and NESAC/ISRO. The near real time precipitation estimates from the DWR shall improve the Flood Early Warning System (FLEWS), being developed by NESAC for NE states. It will also enable IMD and NESAC to take up operational activities on thunderstorm now-casting and hail now-casting for NE states.
Dedication of the DWR to Nation
The DWR System at Cherrapunjee
A typical DWR Product - Maximum Reflectivity
A typical DWR Product - Maximum Velocity
A typical DWR Product - Differential Reflectivity