News from the Tarkka service
Is Tarkka not working? Try this!
When new features are updated in Tarkka, you may need to update the files in your browser’s cache. To do this, press Ctrl + F5 on the Tarkka main page (Ctrl + Fn + F5 in some browsers), or alternatively clear your browser’s cache (Options / Settings → Privacy & Security → History → Clear History).
High resolution Sentinel-2 and Landsat-8 true-color images in the Tarkka service often load close-up when focusing. These images do not cover the entire area of Finland and the Baltic Sea on a daily basis, but areas about 200-300 m wide. Tarkka’s background systems (interfaces of spatial data sets, interfaces of water quality data) will be tentatively updated during 2024 between approximately 3 pm and 7 pm on the following days: 26.3.2024 , 28.5.2024 , 1.10.2024 ja 26.11.2024.
New generation of Tarkka service was available since 1st June 2022.
| Date | Changes in Tarkka |
|---|---|
| 14.12.2023 | v1.3.12 Added Landsat-4/5 true-color imagery to the true-color dataset. Introduced the HISP form for the Lake Ice theme, allowing users to report lake ice observations through the citizen observation system. |
| 23.10.2023 | v1.1.6 Added the Land Cover theme |
| 2.10.2023 | v1.1.5 Optimized URLs. Introduced the Seasonal Composites theme. Added annual and monthly composites for NDVI, NDMI, NDSI, NDTI, and NDBI indices (Sentinel-2). Included NDWI index and surface water area interpretation (Sentinel-2). Added a style selection dropdown for true-color imagery. Revamped the cloud-free days functionality. |
| 12.7.2023 | v0.3.6 Added satellite footprint areas (Sentinel-2 and Landsat-8/9) to the Water Quality theme. |
| 6.6.2024 | Tarkka’s new url : Tarkka.syke.fi |
| 5.6.2023 | Added ELY-boundaries to the Gallery search map |
| 17.5.2023 | Swipe functionality added to the map browser. |
| 3.5.2023 | Introduced Sentinel-1 SAR observations for the Lake Ice service. |
| 19.4.2023 | dded place name search. Included LC8/9 turbidity time series, EEA grid, and Sentinel-2 tile grid. |
| 14.3.2023 | Added surface temperature data to the Lake Ice theme. |
| 27.2.2023 | Included river automatic station observations and Helsinki beach temperature observations in the time series. |
| 1.8.2022-26.2.2023 | Added EO datasets to the Map Viewer across different themes. Enhanced map browser functionality, including basic features and additions like cloudless day search and adjustable legends. |
| 1.6.2022 | Test usage of the new-generation Tarkka |