INMET

INMET
Name	INMET
Formation	1909
Type	National meteorological service
Headquarters	Brasília
Jurisdiction	Brazil
Leader title	Director
Website	(official site)

INMET

The Instituto Nacional de Meteorologia is Brazil's federal meteorological agency with national responsibility for weather observation, forecasting, climatology and atmospheric research. It provides operational forecasts, hazard warnings and climate monitoring that support the Presidency of Brazil, Ministry of Agriculture, Livestock and Food Supply, Brazilian Air Force, State of São Paulo authorities and regional planners across the Amazon Rainforest, Cerrado, Pantanal and Atlantic Forest. INMET collaborates with global organizations such as the World Meteorological Organization, the United Nations Environment Programme, the Intergovernmental Panel on Climate Change and regional partners like the Instituto Nacional de Pesquisas Espaciais, Centro de Previsão de Tempo e Estudos Climáticos and national universities.

History

INMET traces institutional roots to early 20th-century meteorological efforts linked to the First Brazilian Republic's expansion of civil services and to international networks like the International Meteorological Organization. Throughout the 1930s and 1940s INMET modernized instrumentation influenced by exchanges with the United Kingdom Met Office, United States Weather Bureau and Institut météorologique de France, and its operations expanded during industrialization projects including the São Francisco River integration and Amazon frontier development. During the military government period in Brazil it reoriented some services to support aviation and agricultural planning tied to the Brazilian Air Force and the Ministry of Transport, while post-1980s democratization and environmental policy shifts integrated climate research for bilateral programs with the United States Agency for International Development and multilateral engagements with the World Bank.

Organization and Governance

INMET operates under federal statute with administrative oversight linked to the Ministry of Agriculture, Livestock and Food Supply and technical coordination with the World Meteorological Organization. Its governance structure includes a directorate, scientific advisory boards and regional offices aligned with Brazil's five geographic regions: North Region, Brazil, Northeast Region, Brazil, Central-West Region, Brazil, Southeast Region, Brazil and South Region, Brazil. Strategic decisions are influenced by interagency committees that include representatives from the Brazilian Air Force, Ministry of Health (Brazil), National Institute for Space Research and state secretariats such as the São Paulo State Secretariat for the Environment. Budgetary allocations and legal mandates derive from legislation enacted by the National Congress of Brazil.

Functions and Services

INMET issues operational forecasts, warnings for hydrometeorological extremes, and climate normals that underpin planning for sectors served by the Ministry of Agriculture, Livestock and Food Supply, Petrobras, the Brazilian Navy and municipal emergency managers. Its services include synoptic charts, daily meteorological bulletins, agroclimatic advisories supporting the Fundo Constitucional de Financiamento do Nordeste and aviation weather products used by LATAM Brasil and the International Civil Aviation Organization. INMET maintains climatological archives used by researchers publishing in venues like the Brazilian Journal of Meteorology and by international assessments prepared for the Intergovernmental Panel on Climate Change and regional flood risk studies for the Paraná River basin.

Observational Network and Infrastructure

INMET operates a nationwide network of surface meteorological stations, automatic weather stations, radiosonde launch sites and precipitation gauges distributed across ecosystems from the Amazon Rainforest to the Atlantic coast of Brazil. The network is interoperable with satellite data from the Geostationary Operational Environmental Satellite series and with radar installations co-located with civil aviation radars at airports such as São Paulo–Guarulhos International Airport and Rio de Janeiro–Galeão International Airport. Hydrological monitoring is coordinated with river gauging stations on the Amazon River, Tocantins River and Paraná River systems. Instrument calibration and quality control follow protocols harmonized with the World Meteorological Organization and technical guidance from the International Organization for Standardization.

Research and Development

INMET conducts applied research in subfields including mesoscale modeling, climatology of extreme events and atmospheric physics, collaborating with academic partners such as the University of São Paulo, Federal University of Rio de Janeiro, Federal University of Paraná and research centers like the National Institute for Space Research and the Agência Nacional de Águas. Its R&D outputs contribute to numerical weather prediction improvements, assimilation schemes that use data from the Argentine Meteorological Service and model intercomparisons with centers such as the European Centre for Medium-Range Weather Forecasts and the National Centers for Environmental Prediction. INMET scientists publish in international journals and participate in capacity-building initiatives tied to programs run by the World Meteorological Organization and the Inter-American Development Bank.

International Cooperation and Standards

INMET is a World Meteorological Organization member and engages in regional cooperation through mechanisms involving the Organization of American States and South American frameworks such as the Union of South American Nations. It exchanges observational data with global telecommunication channels like the Global Telecommunication System and contributes to multinational projects including climate monitoring consortia coordinated with the European Union and bilateral collaborations with the National Oceanic and Atmospheric Administration. Standardization efforts align INMET with protocols from the World Meteorological Organization and interoperability frameworks used by the Group on Earth Observations.

Impact and Controversies

INMET's forecasts and warnings have informed disaster response to floods and droughts affecting regions including the Northeast Region, Brazil and river basins such as the Amazon River and São Francisco River, influencing policy decisions by the Ministry of Health (Brazil) and state governors. Controversies have arisen over data gaps in remote areas of the Amazon Rainforest, funding shortfalls debated in the National Congress of Brazil, and disputes about forecasting responsibility between federal and state agencies like the Civil Defense of Pará and municipal authorities. Debates in scientific and policy forums have examined INMET's readiness for accelerating climate extremes discussed in reports by the Intergovernmental Panel on Climate Change and multilateral finance institutions.

Category:Brazilian research institutes