- National Centre for Medium Range Weather Forecasting (NCMRWF)
 - Provides weather forecasts and researches in numerical weather prediction, diagnostic studies, and crop weather modelling. Site features weather bulletins, events, and activities of the Indian Meteorological Society. - Ministry of Earth Sciences
- Organisation structure, reports, budget, telephone directory, and questions and answers session in parliament of the Ministry of Earth Sciences, Government of India.
- India Meteorological Department
- Official site providing daily and weekly weather forecasts, rainfall maps, earthquake reports, cyclone warnings, and astronomical information. Includes an interactive map of weather in major cities of India.
- Indian Institute of Tropical Meteorology
- Researches in meteorology and atmospheric sciences including weather forecasting, climatology, and hydrometeorology. Site features research highlights, publications, and meteorological data sets.
- Indian National Centre for Ocean Information Services
- Provides oceanographic research data and advisory services to the goverment and industry. Site features research areas, forecasting services, and data sets.
- National Institute of Ocean Technology (NIOT)
- Headquartered in Chennai, India, the institute develops technology to resolve ocean engineering problems and harvest marine resources. Site features research areas and projects at Kavaratti and Tuticorin.
- Integrated Coastal and Marine Area Management Project Directorate
- Project by the Government of India for sustainable utilization of coastal and marine resources and protection of marine environment. Site features research areas, training facilities, publications, and activities. Located at Chennai, India.
- India Meteorological Department: Seismology
- Maintains national seismological observatories in and around India, as well as develops and manufactures seismological instruments and accessories in the IMD Workshop in New Dehli. Includes Seimic Zoning Map and Seismicity Map.
- National Centre for Antarctic & Ocean Research (NCAOR)
- Coordinates polar science research and related logistical activities in India. Site features research programmes, partners, publication, and chronicles India's expeditions to Antarctica. Located at Goa, India
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