Finnish Environment Institute | Suomen ympäristökeskus | Finlands miljöcentral

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Satellite observations

Satellite image based products are produced in the Finnish Environment Institute (SYKE) in order to monitor environmental changes. These products are: sea surface temperature, algal blooms, water turbidity and chlorophyll-a concentration in the Baltic Sea, snow covered area in Finland and the Baltic Sea area, and snow water equivalent in Finland.

Daily and weekly images and time series are published on the SYKE’s Remote Sensing Products website.

Åland Islands and the Archipelago Sea, 18th August 2015. © Image: SYKE. Original data: USGS/NASA Landsat Program.

Satellite data

  • TARKKA - map service for high resolution satellite images (Sentinel 2, Landsat 8)

webmap   wms

  • Chlorophyll-a for the Baltic Sea (2003 - )

webmap  HTML   metadata

  • Turbidity for the Baltic Sea (2003 - )

webmap  HTML   metadata

  • Surface algal blooms for the Baltic Sea (2012 - )

webmap  HTML

  • Sea surface temperature for the Baltic Sea (2005 - )

webmap HTML   geotiff  metadata  metadata

  • Lake surface temperature (2005 - )


  • Snow Covered Area (SCA) in the Baltic Sea drainage basin area (2012 -)

webmap   HTML  geotiff  esrirest  metadata

  • Lake ice extend in Finland (2017 - )

webmap  HTML   metadata

  • Snow Covered Area (SCA) in Finland (2006 - 2013)

HTML   metadata

  • Snow water equivalent (SWE) in Finland (2011 - 2013)

HTML  esrirest   metadata

  • MODIS RGB images (2014 -)

HTML  webmap



SYKE is usingCreative Commons By 4.0 International licence for open data. This licence applies to SYKE's satellite data.


Finnish Environment Institute (SYKE) / Geoinformatics systems and geoinformatics research units have produced these Remote Sensing products. The products are based on NOAA-AVHRR (NOAA), TERRA / AQUA MODIS (NASA), ENVISAT MERIS (ESA), RADARSAT (CSA), AMSR-E (NASA), Landsat 8 (NASA) or Sentinel 2 (ESA) satellite observations. NOAA-AVHRR and TERRA / AQUA MODIS images are received by Finnish Meteorological Institute. ENVISAT MERIS and Sentinel 2 images are downloaded from ESA web server. Landsat 8 and part of AQUA MODIS images are downloaded from NASA web server.

SYKE should be mentioned as a source if data is used in publications or in presentations or made available to the public in some other way. RGB images must be accompanied by attribution text with original data source. For example for Sentinel 2 images: "Original images: ESA Copernicus Sentinel Data, prosessed: SYKE" or Landsat 8 images: "Original images: USGS/NASA Landsat Program, prosessed: SYKE". In case of scientific publications which explicitly make use of the products the appropriate references are to be inquired from the remote sensing team: [group = eotuki.syke].

Published 2015-12-15 at 10:42, updated 2020-01-03 at 10:06
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