Dataset extent

Suomen päivittäinen vesi-indeksi NDWI (Sentinel-2) 2016– / Daily water index NDWI for Finland (Sentinel-2) 2016–

[FI] NDWI (normalized difference water index) on vesi-indeksi, joka kuvaa nestemäisen veden peittämän maanpinnan ja vesistöjen osuutta. NDWI-indeksiä käytetään erottamaan avoimet vesialueet, kuten tulvat, satelliittiaineistosta. Indeksi on laskettu Sentinel-2 -satelliitin MSI-instrumentin ilmakehäkorjatuista havainnoista kanavien 3 ja 8 erotusindeksinä: NDWI = (B03-B08)/(B03+B08). Ilmakehäkorjauksessa sekä pilvi- ja pilvivarjoalueiden tunnistuksessa hyödynnetään sen2cor-algoritmia.

Aineisto kattaa koko Sentinel-2 mission ja molemmat satelliitit 2A ja 2B vuodesta 2016 eteenpäin Itämeren valuma-alueelta. NDWI-aineisto saadaan Sentinel-Hubin automatisoidun prosessin avulla.

Aineisto on tuotettu Copernicus FPCUP -osahankkeessa “Tailored downstream applications/products – from Copernicus to coastal and inland water monitoring

[EN] NDWI (Normalized Difference Water Index) is a water index which represents the liquid water content of land surface and water bodies. The NDWI-index is used to distinguish open water features, i.e., floods, from Earth observation data. The index is computed from the atmospherically corrected Sentinel-2 MSI data (Level-2) as the normalized difference index of bands 3 and 8: NDWI=(B03-B08)/(B03+B08). Atmospheric correction, cloud detection and cloud shadow detection is based on the sen2cor-algorithm.

The dataset covers the full Sentinel-2 mission and both satellites 2A and 2B from year 2016 onwards for the Baltic Sea basin. The NDWI-images are obtained from the Sentinel-Hub API through an automated process.

The dataset is produced in the Copernicus FPCUP action “Tailored downstream applications/products–from Copernicus to coastal and inland water monitoring”.

Data and Resources

Additional Info

Field	Value
File Identifier	{13DBD235-7249-4E5C-8A63-822BD3A5D38A}
Metadata Language	fin
Organisation responsible for metadata	Suomen ympäristökeskus / Finnish Enviroment Institute (Syke)
Contact information of the organisation responsible for metadata	eotuki@syke.fi
The role of the organisation responsible for metadata	pointOfContact
Metadata revision date	2024-04-08
EPSG Code of the Reference System, see https://epsg.io/	EPSG:4326
Resource Date	2023-10-04
Resource Date Type	publication
Unique Resource identifier
Organisation Responsible for Resource	Suomen ympäristökeskus / Finnish Enviroment Institute (Syke)
Contact information of the organisation responsible for Resource	eotuki@syke.fi
The role of the organisation responsible for Resource	pointOfContact
Thumbnail image
INSPIRE Data Theme	Hydrography
INSPIRE Data Theme	Land cover
GEMET Concepts Keyword	moisture
GEMET Concepts Keyword	remote sensing
GEMET Concepts Keyword	earth observation
GEMET Concepts Keyword	satellite image
GEMET Concepts Keyword	index
Resource Classification	Satelliittihavaintotieto
Other keywords	Ei-Inspire
Other keywords: Thesaurus name
Other keywords	Tarkka
Other keywords: Thesaurus name
Other keywords	vesi-indeksi
Other keywords: Thesaurus name
Other keywords	water index
Other keywords: Thesaurus name
Other keywords	NDWI
Other keywords: Thesaurus name
Use constraints and source	Creative Commons Nimeä 4.0 Kansainvälinen [FI] Syke on mainittava lähteenä, jos tuotteita käytetään julkaisuissa tai esityksissä tai saatetaan muulla tavoin yleisön saataviin. NDWI-aineistoa hyödynnettäessä täytyy mainita myös alkuperäisen datan toimittaja. Sentinel-2 NDWI-aineistolle "Sisältää muokattua Copernicus-dataa, Syke (vuosi)" Lisätietoja [EN] Syke must be cited as a source if the products are used in publications or performances or otherwise made available to the public. When utilizing NDWI-data, the supplier of the original data must also be mentioned. For Sentinel-2 NDWI-data "Contains modified Copernicus data, Syke (year)" More info
Access Constraints	no limitations
Representation Type	grid
Resource Language	eng
Resource Topic Category	biota
Resource Topic Category	environment
Service Type
Begin Date of Temporal Extent	2016-08-24
End Date of Temporal Extent	now
Lineage Information	-