EARTH OBSERVATIONS OF VOLCANIC ASH AND SO2
- AIRS: SO2 warnings at NOAA
- GOME-2: SO2 NRT service at DLR | Volcanic SO2 alerts at Univ.Bremen
- IASI: MeTop-A/IASI SO2 notifications
- OMI: OMI Sulfer Dioxide Group | SO2 data access | Latest SO2 maps at NOAA
- MODIS: LANCE-MODIS Imagery
- NASA Earth Observatory: Natural Hazards
Volcanic Ash Advisory Centres (VAAC)

- Anchorage VAAC
- Buenos Aires VAAC
- Darwin VAAC
- London VAAC
- Montréal VAAC
- Tokyo VAAC
- Toulouse VAAC
- Washington VAAC
- Wellington VAAC
SPACE AGENCIES
- European Space Agency (ESA)
- European Space Agency Research Institute (ESRIN)
- European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT)
- EUMETSAT - current satellites (includes SEVIRI)
Volcano websites
- Global Volcanism Programme (GVP)
- GlobVolcano project: Satellite monitoring in support to early warning of volcanic risk
- International Civil Aviation Organization (ICAO)
- International Volcanic Health Hazard Network (IVHHN)
- Kamchatkan Volcanic Eruption Response Team (KVERT)
- Michigan Technological University Volcanoes Page
- Monitoring of global hot-spots by the University of Hawaii (MODVOLC)
- NASA Earth Observatory: Natural Hazards
- Network for Observation of Volcanic and Atmospheric Change (NOVAC)
- Nordic Volcanological Center (NORDVULK) at the University of Iceland
- US Geological Survey (USGS) -- Volcano Observatories: Cascades | Hawaii | Alaska
- Volcanic Ash information service by the US Geological Survey (USGS)
- Volcano Monitoring with Infra-Red (VOMIR)
- Volcanological Society of Japan
- Volcano World
- World Organization of Volcano Observatories (WOVO), part of the International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI)