PARLIAMENT QUESTION: Automatic Weather Stations
1. At a Glance
- AWS are unmanned, sensor-based surface observatories that auto-transmit weather parameters (temp, RH, rainfall, wind, pressure) at sub-hourly intervals to IMD servers [S1][S3].
- India operates 1,008 AWS under IMD; ~200 more (chiefly Agro-AWS) planned in 2026 under Mission Mausam Phase-II [S1].
- High-yield UPSC overlap: Mission Mausam, Ministry of Earth Sciences (MoES), disaster management, agro-advisories, climate-resilience.
2. Why in the News
- 18 March 2026 Lok Sabha reply by MoES: Government to install ~200 AWS (primarily Agro-AWS) in 2026 under Mission Mausam Phase-II to bolster agromet advisories [S1].
- Earlier (2026), Dr. Jitendra Singh announced 50 AWS each in Delhi, Mumbai, Chennai, Pune for hyper-local urban nowcasting [S2].
3. Background & Evolution
- IMD established 1875; AWS deployment scaled up in the 2000s to densify the surface network.
- Mission Mausam approved by Union Cabinet on 11 September 2024; outlay ₹2,000 crore over two years [S3][S4].
- Phase-I focused on densifying observation (DWRs, AWS, radiosondes); Phase-II (2026) pivots to Agro-AWS for the farm sector [S1][S4].
4. Core Static Facts
- Implementing Ministry: Ministry of Earth Sciences (MoES) — not MoEFCC, not Ministry of Agriculture [S3].
- Lead agencies: IMD, IITM Pune, NCMRWF Noida [S4].
- Existing AWS network: 1,008 operated by IMD [S1]; supplemented by State Governments, energy sector, CWC real-time data [S1].
- Mission Mausam outlay: ₹2,000 cr / 2 years [S3].
- Phase-II AWS target (2026): ~200, primarily Agro-AWS [S1].
- Mission Mausam infra targets: 50 Doppler Weather Radars (DWR), 60 Radiosonde/Radiowind stations, 100 disdrometers, 10 wind profilers, 25 radiometers, 1 urban testbed, 1 process testbed, 1 ocean research station, 10 Marine AWS [S4].
- Urban AWS push: 50 AWS each in Delhi, Mumbai, Chennai, Pune announced 2026 [S2].
5. Multi-Dimensional Analysis
- Scientific/Technological: Agro-AWS deliver micro-climatic, sub-district data feeding Gramin Krishi Mausam Sewa (GKMS) advisories; IMD also piloting a 3-D printed AWS [S2].
- Economic/Agricultural: Block-level forecasting reduces crop loss, optimises sowing/irrigation/pesticide timing — direct input to PMFBY loss assessment.
- Administrative: Multi-agency data fusion — IMD + State Govts + CWC + energy sector — typifies cooperative federalism in observation infra [S1].
- Environmental/Climate: Densified surface network underpins extreme-weather nowcasting (cloudbursts, heatwaves) critical to NAPCC adaptation goals.
- Strategic: Mission Mausam positions India among states with global-best forecasting; supports defence, aviation, shipping [S4].
6. Recent Developments (last 12-18 months)
- 11 Sep 2024: Cabinet approves Mission Mausam, ₹2,000 cr [S3].
- 14 Jan 2025: PM launches Mission Mausam, releases IMD Vision-2047 at IMD's 150th-year event [search S5].
- 2026: Announcement of 50 AWS each for four metros (Delhi, Mumbai, Chennai, Pune) [S2].
- 18 Mar 2026: Parliament reply confirming ~200 Agro-AWS for 2026 under Phase-II [S1].
7. Prelims Hooks
- IMD currently operates 1,008 AWS [S1].
- Mission Mausam approved on 11 September 2024 by the Union Cabinet [S3].
- Mission Mausam outlay: ₹2,000 crore for 2 years [S3].
- Nodal ministry: Ministry of Earth Sciences [S3].
- Three implementing institutes: IMD, IITM (Pune), NCMRWF (Noida) [S4].
- Mission Mausam targets 50 DWRs and 10 Marine AWS with upper-air capability [S4].
- 2026 expansion: 200 AWS, mostly Agro-AWS, in Phase-II [S1].
- Urban metro plan: 50 AWS each in Delhi, Mumbai, Chennai, Pune [S2].
- IMD also draws AWS data from State Govts, energy sector, Central Water Commission [S1].
- IMD was set up in 1875; commemorated 150 years in January 2025.
- IMD has also inaugurated a 3-D Printed AWS and Agro-AWS prototype [S2].
- Mission Mausam complements IMD Vision-2047 released in Jan 2025.
8. Mains Relevance
- GS-III — Science & Tech (indigenous tech, IT); Disaster Management; Agriculture (technology missions).
- GS-II — Government policies & welfare schemes (Mission Mausam delivery).
- Possible stems:
- "Evaluate the role of dense observational networks like AWS in making Indian agriculture climate-resilient."
- "Discuss the objectives of Mission Mausam. How does it integrate with India's disaster-preparedness architecture?"
- "Hyper-local weather forecasting is a public good. Examine in the Indian context."
9. Related Topics to Study Next
- Mission Mausam — parent scheme.
- IMD Vision-2047 — long-term roadmap that frames AWS expansion.
- Doppler Weather Radar (DWR) network — complementary observation infra.
- Gramin Krishi Mausam Sewa (GKMS) — end-user agromet advisory consuming AWS data.
- PMFBY — uses weather data for crop-loss assessment.
- NCMRWF & IITM Pune — modelling institutes under MoES.
- NDMA / SDRFs — downstream users for early warning.
- NAPCC & State Action Plans on Climate Change — adaptation linkage.
10. Common Errors / Trap Areas
- AWS network is under MoES/IMD, not Ministry of Agriculture or MoEFCC.
- Mission Mausam outlay is ₹2,000 cr over 2 years — not ₹2,000 cr/year.
- Mission Mausam approval year is 2024 (PM launch Jan 2025) — don't conflate.
- Agro-AWS ≠ ordinary AWS: Phase-II 2026 expansion is primarily Agro-AWS.
- CWC contributes data but is under Jal Shakti, not MoES.
11. Sources
- [S1] PARLIAMENT QUESTION: Automatic Weather Stations, PIB, 18 Mar 2026 — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2241702 — (tier 1)
- [S2] Major Expansion of Automatic Weather Stations (Delhi/Mumbai/Chennai/Pune), PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2214967 — (tier 1)
- [S3] Cabinet approves 'Mission Mausam', PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2053896 — (tier 1)
- [S4] Mission Mausam Unveiled: ₹2,000 Cr Initiative, PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2054427 — (tier 1)
- [S5] PM launches Mission Mausam, releases IMD Vision-2047, PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2092716 — (tier 1)