Concept Page
National Centre for Ocean Information Services
The National Centre for Ocean Information Services (NCOIS) is an Indian agency under the Ministry of Earth Sciences that delivers real‑time oceanographic and meteorological data for navigation, fisheries and disaster management. It operates a network of buoys and satellites, issuing daily forecasts such as the 2023 Bay of Bengal cyclone warning that saved lives.
National Centre for Ocean Information Services (NCOIS) is the premier Indian agency that synthesises real‑time oceanographic and meteorological observations into actionable forecasts for navigation, fisheries, and disaster mitigation. Housed within the Ministry of Earth Sciences, it uniquely integrates a dense buoy network, satellite remote‑sensing, and high‑resolution numerical models to deliver daily ocean state products across the Indian Ocean basin. Its alerts—most famously the 2023 Bay of Bengal cyclone warning—have repeatedly translated scientific data into lives saved and economic losses averted.
Historical Background
The centre was formally inaugurated on 1 January 2005 as part of the Indian Ocean Observing System (IndOOS), a strategic response to the 1999 Odisha cyclone that exposed gaps in marine warning capabilities. Initial funding of ₹ 150 crore was allocated by the Union Cabinet, and the first Indian Ocean Data Buoy (IODB) was moored off Visakhapatnam in March 2006, marking the start of continuous in‑situ measurements. By 2010, NCOIS had launched the Ocean State Forecast service, delivering the first seven‑day wave and sea‑surface‑temperature outlooks for the entire Indian Ocean.
Operational Mechanism
NCOIS operates a fleet of 30 autonomous buoys—15 moored and 15 drifting—strategically positioned from the Arabian Sea to the Bay of Bengal, each transmitting wind speed, wave height, sea‑surface temperature, and salinity every hour via the Indian National Satellite System (INSAT). Complementary satellite assets include OCEANSAT‑2 (launched August 2009), SARAL‑AltiKa (launched February 2013), and the INSAT‑3D series, which furnish sea‑level anomaly, ocean colour, and atmospheric profiles for assimilation into forecast models. Data streams are ingested into a high‑performance computing hub where the WAVEWATCH III and Regional Ocean Modeling System (ROMS) generate deterministic forecasts that are validated against buoy observations before dissemination.
Key Services and Products
The daily Ocean State Forecast provides seven‑day predictions of significant wave height (up to 15 m), wind speed (up to 30 m s⁻¹), and sea‑surface temperature (±0.5 °C), accessed by over 1,200 maritime users through a web portal and a dedicated mobile app launched in 2021. Fisheries advisories, issued twice weekly, combine chlorophyll‑a concentrations from OCEANSAT‑2 with temperature profiles to pinpoint optimal tuna and sardine spawning zones, contributing to an estimated 10 % increase in catch for the western coast during the 2022 season. In the disaster‑management arena, NCOIS issues cyclone‑surge warnings and tsunami‑impact forecasts; its early alert on Cyclone Mocha (May 2023) enabled the Indian Meteorological Department to issue evacuation orders 12 hours ahead of landfall, limiting fatalities to under 30 in the Indian states of Odisha and West Bengal.
Current Status and Impact
As of March 2024, the buoy constellation has expanded to 34 units, extending coverage to the Lakshadweep archipelago and the Andaman‑Nicobar region, while satellite data pipelines now ingest over 2 TB of raw imagery per month. The centre’s services are routinely utilised by the Indian Navy, the Port Trusts of Mumbai and Chennai, and the Ministry of Fisheries, collectively reducing cyclone‑related