Lok Sabha Question No. 756 (UNSTARRED), answered on 2024-02-07
Subject: Doppler Weather Radars
Ministry: EARTH SCIENCES
Asked by: Naranbhai Bhikhabhai Kachhadiya, Bidyut Baran Mahato

## GOVERNMENT OF INDIA MINISTRY OF EARTH SCIENCES LOK SABHA

## UNSTARRED QUESTION NO. 756

TO BE ANSWERED ON WEDNESDAY, 7 TH  FEBRUARY, 2024

## DOPPLER WEATHER RADARS

## 756.    SHRI NARANBHAI KACHHADIYA: SHRI BIDYUT BARAN MAHATO:

Will the Minister of EARTH SCIENCES be pleased to state:

- (a) the difference between C-Band and X-Band Radar along with the coverage range of each of the C and X bands;
- (b) the  present  status  of  the  implementation  of  the  project  along  with  the  details  of  site selected for the purpose; and
- (c) the fresh steps taken by the Government to install an X-Band Doppler radar at suitable sites  in  Gujarat  and  Jharkhand  in  order  to  provide  correct  weather  information  to  the farmers of whole of the coastal regions?

## ANSWER

## THE MINISTER OF EARTH SCIENCES (SHRI KIREN RIJIJU)

- (a) C-Band  radars  are  functioning  at  about  5  cm  wave  length,  whereas  X-Band  radars functions at 3 cm. The C-Band radar antennas are larger than the X-Band radar antennas. The C-Band radar provides the radial coverage of 250 kms from its centre, whereas XBand radar covers 100 kms.
- (b) Currently,  there  are  39  Doppler  Weather  Radars  (DWRs)  installed  across  the  country. The locations of these DWRs have been distributed in the best possible way to monitor severe  weather  conditions  across  multiple  States  of  the  Indian  region.  The  details  are provided in Annexure-1.
- (c) India Meteorological Department has proposed to install C-Band DWRs at Ahmedabad in Gujarat and Ranchi in Jharkhand.

Annexure-1 DWRs network over India with location names and name of States

|   S. No. | States          | Name of Station                | DWRtype               |
|----------|-----------------|--------------------------------|-----------------------|
|        1 | West Bengal     | Kolkata                        | S-Band                |
|        2 | Andhra          | Machilipatnam                  | S-Band                |
|        3 | Andhra          | Visakhapatnam                  | S-Band                |
|        4 | Pradesh         | Hyderabad                      | S-Band                |
|        5 | Andhra          | Sriharikota (ISRO),            | S-Band                |
|        6 | Delhi           | Palam                          | S-Band                |
|        7 | Delhi           | HQ New Delhi                   | C-Band (Polarimetric) |
|        8 | Delhi           | Aya Nagar                      | X-Band                |
|        9 | Maharashtra     | Nagpur                         | S-Band                |
|       10 | Maharashtra     | Mumbai                         | S-Band                |
|       11 | Maharashtra     | Mumbai Veravali                | C-Band                |
|       12 | Maharashtra     | Solapur                        | C-Band                |
|       13 | Tripura         | Agartala                       | S-Band                |
|       14 | Bihar           | Patna                          | S-Band                |
|       15 | Uttar Pradesh   | Lucknow                        | S-Band                |
|       16 | Punjab          | Patiala                        | S-Band                |
|       17 | Assam           | Mohanbari                      | S-Band                |
|       18 | Madhya Pradesh  | Bhopal                         | S-Band                |
|       19 | Odisha          | Paradip                        | S-Band                |
|       20 | Odisha          | Gopalpur                       | S-Band                |
|       21 | Tamil Nadu      | Karaikal                       | S-Band                |
|       22 | Tamil Nadu      | Chennai NIOT                   | X-Band                |
|       23 | Tamil Nadu      | Chennai                        | S-Band                |
|       24 | Goa             | Goa                            | S-Band                |
|       25 | Gujarat         | Bhuj                           | S-Band                |
|       26 | Rajasthan       | Jaipur                         | C-Band (Polarimetric) |
|       27 | Jammu & Kashmir | Srinagar                       | X-Band                |
|       28 | Jammu & Kashmir | Jammu                          | X-Band                |
|       29 | Jammu & Kashmir | Banihal Top                    | X-Band                |
|       30 | Kerala          | Kochi                          | S-Band                |
|       31 | Jammu & Kashmir | VSSC (ISRO) Thiruvananthapuram | C-Band                |

|   32. | Uttarakhand      | Mukteshwar         | X-Band               |
|-------|------------------|--------------------|----------------------|
|    33 | Uttarakhand      | Surkanda Devi      | X-Band               |
|    34 | Uttarakhand      | Lansdowne          | X- Band              |
|    35 | Ladakh           | Leh                | Transportable X-Band |
|    36 | Himachal Pradesh | Kufri              | X-Band               |
|    37 | Himachal Pradesh | Jot                | X-Band               |
|    38 | Himachal Pradesh | Murari Devi        | X-Band               |
|    39 | Meghalaya        | Cherrapunji (ISRO) | S-Band               |

*******