PARLIAMENT QUESTION: STRENGTHEING RADAR INFRASTRUCTURE IN KERALA

I have enough facts. Writing the note now.

PARLIAMENT QUESTION: Strengthening Radar Infrastructure in Kerala — UPSC Study Note

1. At a Glance

• Doppler Weather Radars (DWRs) are the backbone of India's nowcasting and severe-weather warning system, operated primarily by the India Meteorological Department (IMD) under the Ministry of Earth Sciences (MoES) [S1].
• Kerala — with vulnerability to cyclones, landslides (Wayanad 2024), and intense monsoon rainfall — has only 2 operational DWRs, exposing gaps in coastal and Western Ghats coverage [S1].
• Expansion is being driven through Mission Mausam (2024-26, ₹2,000 crore), an exam-frequent scheme [S2][S3].

2. Why in the News

• Lok Sabha Parliament Question answered on 12 Feb 2026 by the Ministry of Earth Sciences disclosed current Kerala radar status, coverage gaps over Wayanad and Idukki, and tentative plan for an X-Band DWR at Wayanad [S1].
• Follows the Wayanad landslide (July 2024) which underscored need for hill-region nowcasting.

3. Background & Evolution

• 2016 (Aug): C-Band DWR commissioned at ISRO, Thiruvananthapuram [S1].
• 2017 (Jul): S-Band DWR at IMD, Kochi; upgraded in 2025 [S1].
• Sep 2024: Union Cabinet approves Mission Mausam, outlay ₹2,000 cr for 2024-26 [S3].
• 19 Jan 2026: X-Band DWR commissioned at Jorhat, Assam — taking India's DWR count to 48 [S1].
• Newly installed C-Band DWR at IMD Mangalore extends partial coverage into northern Kerala [S1].

4. Core Static Facts

• Parent Ministry: Ministry of Earth Sciences (MoES); implementing arm IMD [S1].
• Total DWRs in India: 48 (as of Feb 2026) [S1].
• DWRs in Kerala: 2 — S-Band at IMD Kochi; C-Band at ISRO Thiruvananthapuram [S1].
• Radar Bands: S-Band (long-range, ~450 km, cyclone tracking); C-Band (~250 km, mixed use); X-Band (~100 km, high-res, hilly/urban) [S1].
• Mission Mausam targets: 50 DWRs, 60 Radiosonde stations, 100 disdrometers, 10 wind profilers, 25 radiometers, 1 urban testbed, 1 ocean research station, 10 marine AWS [S2][S3].
• Mission Mausam outlay: ₹2,000 crore over FY 2024-26 [S3].
• Coverage gaps in Kerala: coastal belt + hilly Wayanad, Idukki [S1].

5. Multi-Dimensional Analysis

Scientific / Technological - DWRs use Doppler effect to measure precipitation intensity + wind velocity; critical for nowcasting (0-6 hr forecasts) [S1]. - X-Band preferred for hilly terrain like Wayanad due to higher resolution despite shorter range [S1].

Administrative / Federal - Radar siting is a Union subject (MoES), but land/clearance depend on state cooperation — bottleneck for Wayanad site finalisation [S1]. - Inter-agency: IMD + ISRO + IITM (Pune) jointly run radars; e.g., IITM Mahabaleshwar X-Band under Mission Mausam [S2].

Environmental / Disaster Management - Kerala recorded 2018 floods, 2024 Wayanad landslide; densified radar net feeds into NDMA early-warning and IMD Impact-Based Forecasting [S1]. - Gap in Western Ghats means cloudburst events under-detected.

Economic - Avoided agricultural & infrastructure losses justify ₹2,000 cr Mission Mausam outlay [S3]. - Plantation economy of Idukki/Wayanad (tea, cardamom, coffee) particularly weather-sensitive.

6. Recent Developments (last 12-18 months)

• 11 Sep 2024: Cabinet clears Mission Mausam [S3].
• 2025: Kochi S-Band DWR upgraded [S1].
• 19 Jan 2026: X-Band DWR commissioned at Jorhat, Assam [S1].
• 12 Feb 2026: MoES tells Parliament X-Band DWR tentatively planned at Wayanad [S1].
• C-Band DWR at IMD Mangalore commissioned, augmenting north-Kerala coverage [S1].

7. Prelims Hooks

• DWRs in India total 48 as of Feb 2026 [S1].
• Kerala has 2 operational DWRs [S1].
• S-Band DWR — Kochi (IMD); C-Band DWR — Thiruvananthapuram (ISRO) [S1].
• Latest DWR commissioned at Jorhat, Assam — 19 Jan 2026 (X-Band) [S1].
• Mission Mausam launched Sept 2024, outlay ₹2,000 crore, period 2024-26 [S3].
• Mission Mausam targets 50 DWRs, 60 radiosonde, 100 disdrometers, 10 wind profilers, 25 radiometers [S2].
• Implementing ministry: Ministry of Earth Sciences (NOT MoEFCC, NOT MoD) [S1].
• Three pillar institutes of Mission Mausam: IMD, IITM-Pune, NCMRWF [S2].
• X-Band radar: short range, high resolution — preferred for hilly Wayanad [S1].
• ISRO Thiruvananthapuram DWR commissioned August 2016 [S1].
• IMD Kochi DWR commissioned July 2017, upgraded 2025 [S1].
• Identified Kerala coverage gaps: Wayanad, Idukki, coastal belt [S1].

8. Mains Relevance

• GS-III — Disaster Management; Science & Technology (indigenous tech, early-warning); Infrastructure.
• GS-II — Government policies (Mission Mausam), Centre-State coordination in DM.
• Plausible stems: 1. "Despite an expanding DWR network, India's hill states remain forecast-blind. Critically examine in light of Mission Mausam." (GS-III) 2. "Discuss the role of weather radars in operationalising Impact-Based Forecasting in India." (GS-III) 3. "Federal cooperation is the weakest link in India's disaster early-warning chain. Comment." (GS-II)

9. Related Topics to Study Next

• Mission Mausam — parent scheme driving expansion.
• IMD modernisation programmes — Phase-I/II/III.
• NDMA & SDRF/NDRF framework — downstream user of radar data.
• Wayanad landslide 2024 — case study for early-warning failure.
• Cyclone Warning System & Coastal Radar Chain (Navy + IMD).
• INSAT-3DS / INSAT-3DR satellites — complementary space-based observation.
• NCMRWF & IITM-Pune — modelling backbone.
• Bhuvan / Bharat Forecast System (BFS) — 6 km native model launched 2025 by IITM.

10. Common Errors / Trap Areas

• Ministry confusion: MoES, NOT MoEFCC, NOT MoD, NOT MeitY.
• Mission Mausam outlay is ₹2,000 cr / 2 years, not annual.
• DWR ≠ AWS (Automatic Weather Station); AWS measures point parameters, DWR scans volume.
• The ISRO Thiruvananthapuram DWR is C-Band, while IMD Kochi is S-Band — easy to flip.
• Mission Mausam target is 50 new DWRs nationally, not Kerala-specific.

11. Sources

• [S1] PARLIAMENT QUESTION: Strengthening Radar Infrastructure in Kerala — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2226884 — (tier 1)
• [S2] Mission Mausam Unveiled: A ₹2,000 Crore Initiative — https://www.pib.gov.in/PressReleaseIframePage.aspx?PRID=2054427 — (tier 1)
• [S3] Cabinet approves Mission Mausam, outlay ₹2,000 crore — https://www.pib.gov.in/PressReleseDetailm.aspx?PRID=2053896 — (tier 1)