Swedish Meteorological and Hydrological Institute

SMHI campus in Norrköping

The Swedish Meteorological and Hydrological Institute (Swedish: Sveriges meteorologiska och hydrologiska institut, abbreviated SMHI) is a Government agency in Sweden and operates under the Ministry of the Environment.[1] SMHI has expertise within the areas of meteorology, hydrology and oceanography, and has extensive service and business operations within these areas.

Established in 1945, SMHI's head office is located in Norrköping. Prior to 1975 it was located in Stockholm but after a decision taken in the Riksdag in 1971 it was relocated to Norrköping in 1975. SMHI also has offices in Gothenburg, Malmö, Sundsvall and Upplands Väsby. To the Swedish public SMHI is mostly known for the weather forecasts in the public-service radio provided by Sveriges Radio. Many of the other major media companies in Sweden also buy weather forecasts from SMHI.

Staff and organisation

SMHI has about 650 employees. The research staff includes some 100 scientists at the Research Unit, where the Rossby Centre is part of. The research division is divided into six units:[2]

The regional and global climate modelling is at the Rossby Centre, which was established at SMHI in 1997.[3]

Environmental research spans all six research units. There is also a project for providing contributions to the HIRLAM (High Resolution Limited Area Model) project.

The main goal of the research division is to support the Institute and the society with research and development. The scientists participate in many national and international research projects.

Air quality research

The air quality research unit of SMHI has 10 scientists, all of whom have expertise in air quality, atmospheric pollution transport, and atmospheric pollution dispersion modelling.[4]

Some of the atmospheric pollution dispersion models developed by the air quality research unit are:


The air quality consultancy department develops and use the Airviro Air Quality Management (AQM) system.[8] This an integrated, web-based system for collection of meteorological and environmental data, handling of emission databases, dispersion models, etc.

Typical users are national environmental institutes, large to small city authorities, industries, environmental organizations, consultancy firms and meteorological institutes.


The most important modules of Airviro are

See also


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