Nocturnal upward direct or reflected lighting (nW/cm²/sr) in the Helsinki metropolitan area. The photos were taken in May 2014.
The material was completed in the Decumanus project and was produced by Eurosense, a Belgian company specialising in spatial data services, using NOAA satellite images as a starting material.
**[Data preview and download in the map service](https://kartta.hsy.fi/?zoomLevel=4&coord=25493202.261499215_6675514.366993691&mapLayers=27+100+rasteri,105+75+light_emissions_helsinki_tyyli&uuid=508752a1-2d1e-4011-a0f7-a96e857fff64&noSavedState=true&showIntro=false).**
Build on reliable and scalable technology
FAQ
Frequently Asked Questions
Some basic informations about API Store ®.
Operation and development of APIs are currently fully funded by company Apitalks and its usage is for free.
Yes, you can.
All important information such as time of last update, license and other information are in response of each API call.
In case of major update that would not be compatible with previous version of API, we keep for 30 days both versions so you will have enough time to transfer to new version. We will inform you about the changes in advance by e-mail.