In situ measurements

• Weather transmitters
• Ceilometers
• FMI routine observations

Remote sensing

• C-band doppler radars
• Satellite observations of weather
• Wind profiler
• Lightning location
• Meteosat
• NOAA

Other data sources for the area

• Finnish Meteorological Institute main site
  On-line weather data, e.g. forecasts, climatic data and observations (e.g. rain accumulation/snow cover maps).
• FMI lightning data
  Maps of the most intense lightning days in Finland.
• Air quality index
• FMI snow products
• Maps for total ozone, UV-index and daily UV-dose
  FMI site for OMI-VFD satellite products.
• FINNRA road weather stations
  On-line road weather conditions in Finland.
• Estonian road weather stations
  On-line road weather conditions in the Baltic Sea region.
• Estonian Meteorological and Hydrological Institute
  On-line weather and analyzed weather maps (at Ilmaprognoosid > Ilmakaart).
• On-line weather conditions at airports by Finnish Civil Aviation Administration, NOAA, and Plymouth State Weather Center (archived METARs).
• Finnish Institute of Marine Research
  On-line sea ice cover, significant wave heights, wave forecasts, sea level observations, and algal situation maps.
• Finnish Environment Institute (SYKE)
  Environmental data for Finland, e.g. hydrological and satellite observations.
• Satrep analysis archives
  Combination of satellite imagery and conceptual model analysis.
• CWINDE Doppler radar wind profiles
  On-line weather radar and wind profiler data are included.
• MODIS rapid response system
• BALTEX radar data center, oceanographic data center and hydrological data center.
• European integrated water vapour map, select "Products" at E-GVAP site.
• Spatial data lending facility for south-west Finland. (in Finnish)
• CORINE Land Cover 2000 and Image 2000
  Satellite image map and raster land cover database with a 25 m x 25 m resolution covering the whole Finland.
• Google maps, and Google Earth application
  Both include hi-res satellite images for Helsinki area. Get wxt-stations as Google Earth placemarks!
• MODIS Low-res land global browse images
  5km versions of selected products like top-of-the-atmosphere radiance, surface reflectance, snow cover, surface temprature, active fire, LAI/FPAR, sea ice. To get comprehensive albedo data, see MOD43C1 V004 MODIS Albedo 16-Day L3 Global 0.05 Degree CMG Binary Data Sets.
• Climate-SAF web user interface
• CloudSat Data Processing Center
• NORDKLIM Climatological Data Set
• NOAA Climatic data center
• Helsinki environmental statistics, including climate data (in Finnish).
• European Center for Medium Range Weather Forecasts
  E.g. forecasts and re-analysis.
• World data center for climate, Hamburg
  Main focus is set to climate model related data.
• Land Processes - Distributed Active Archive Center
  E.g. global topography data set (GTOPO30) with a horizontal grid spacing of 30 arc seconds.
• Integrated CEOS European Data Server
  E.g. elevation data: 3 arcsecond (~90m) resolution SRTM DEM data for Europe, Africa and the Indian subcontinent.
• Globe program
  E.g. observations. Worldwide hands-on, primary and secondary school-based education and science program.
• Helsinki metropolitan area city council (YTV)
  On-line air quality observations.
• Radiation and Nuclear Safety Authority Finland (STUK)
  On-line UV-observations.
• World Radiation Data Centre
  On-line radiation data archive.
• European database for UV climatology and evaluation
• Global Precipitation Climatology Centre
  Free access to global monthly gridded precipitation data sets.
• www.westwind.ch
  On-line observations and forecasts.
• www.wetterzentrale.de
  On-line weather data.
• Finnish storm arena
  Background on convective weather phenomena and lots of related links (incl. on-line weather) by A-J Punkka (in Finnish).