Useful links: Space Weather services: Estudo e Monitoramento Brasileiro do Clima Espacal (EMBRACE) European Space Agency - Space Situational Awareness - Space Weather European Space Weather Portal (ESWeP) Finnish meteorological institute (FMI - Finland) International Space Environment Services (ISES) International Space Weather Iniciative (ISWI) Korean Space Weather Center (KSWC) Met Office Space Weather Operations Centre (MOSWOC) National Oceanic and Atmospheric Administration's Space Weather Prediction Center (NOAA/SWPC) National Institute of Information and Communications Technology (NICT) Servicio Nacional de Meteorología Espacial (SENMES) Solar Influences Data Analysis Center (SIDC) Space Weather Services (Australia) Solar observations: BASS200 solar survey archive Instituto Português do Mar e da Atmosfera's (IPMA) space section Global High Resolution H-alpha Network Solar and Heliospheric Observatory Geomagnetism: GFZ - Helmholtz Centre Potsdam (Germany) Ebro Observatory (Spain) International Service of Geomagnetic Indices World Data Centre for Geomagnetism, Edinburgh World Data Centre for Geomagnetism, Kyoto Projects: SWAIR MAG-GIC Seismology: Instituto Português do Mar e da Atmosfera (IPMA) - Seismology section Incorporated Research Institutions for Seismology (IRIS) Observatories & Research Facilities for European Seismology (ORFEUS) United States Geological Survey (USGS)