Tarkka User Manual

User manual and instructions for the Finnish Environment Institute’s (Syke) Tarkka service. Tarkka can be found at tarkka.syke.en

Webpage of the EO-wiki: www.syke.fi/EOwiki/en

• Tarkka instructions
  • What’sup
  • Functionalities of the Map viewer
    • Selection of observation date
    • Map features
    • Searching for cloudless days
    • Choosing the materials to be presented
    • Time series of the Regions and Stations
    • Location and area search
    • True color images in the Map viewer
  • Gallery
  • Analysis
• Dataset
  • Earth Observation
    • True color images
    • Chlorophyll-a
    • CDOM
    • Secchi depth
    • Turbidity
    • Surface algae blooms
    • Surface temperature
  • Aggregates
  • GIS-data
• General about Tarkka service
  • Tarkka and STATUS development
    • BalticAIMS
    • WQeMS
      • Validation of automated station data
  • Links of Tarkka’s usage
  • HISP (crowdsourcing)
  • News about Tarkka
  • Syke-X

• Frequently Asked Questions
  • What does the green-blue algae look like on satellite observations at lakes, coast and the sea?
  • The water looks greenish. Is it cyanobacteria?
  • Coastal water nearby river (estuary) is turbid. Does all of it originate from the river?
  • Why does the water look strange during a strong wind? (Glint or glint phenomenon.)
  • What are true color images?
  • Why does the satellite image look imprecise or is not loading?
  • Why doesn’t today’s satellite observation appear in Tarkka?
  • Why there are no satellite images in northern latitudes during winter-time?
  • Can I use satellite images in publications or news articles?
  • How to download GeoTIFF raster from Syke’s WCS interface?
  • International sites
  • Abbreviations
• License information