Siirry sisältöön

Maanpinnan läpäisemättömyys (Imperviousness) 2012, 2015 & 2018

Paikkatietoaineistot, Satelliitti- ja ilmakuvat Maanpeite/Maankäyttö

Maanpinnan läpäisemättömyys (0-100 %) kertoo mikä osuus pikselin alasta on keinotekoista, esimerkiksi rakennusten tai tie- ja parkkialueiden peittämää.
Aineisto on tuotettu EEA:ssa pääosin tulkitsemalla satelliittikuvista laskettua NDVI-indeksiä. Rasterin pikselinkoko on 10 m.
Aineisto on tarkoitettu ympäristöhallinnon käyttöön.

Maanpinnan läpäisemättömyys(Imperviousness) is produced by the European Environment Agency (EEA)

The data has been produced for reference years 2006, 2009, 2012, 2015 and 2018. In Syke the data is available for the last 3 production years (2012, 2015 and 2018).

Built-up areas are characterized by the substitution of the original (semi-) natural land cover or water surface with an artificial, often impervious cover. These artificial surfaces are usually maintained over long periods of time. The imperviousness HRL captures the spatial distribution of artificially sealed areas, including the level of sealing of the soil per area unit. The level of sealed soil (imperviousness degree 1-100%) is produced using an automatic algorithm based on calibrated NDVI.

Purpose of use: For environmental administration.

More information:

General information of the data: https://land.copernicus.eu/pan-european/high-resolution-layers/imperviousness

High Resolution Layers(HRLs) – summary of product specifications 2012: https://geoportal.ymparisto.fi/meta/julkinen/Dokumentit/HRL_Summary_for_publication_v11.pdf

Enhancement report for year 2012: https://geoportal.ymparisto.fi/meta/julkinen/Dokumentit/enhancement_report_imperviousness_finland.pdf

Technical document for the Imperviousness 2015: https://land.copernicus.eu/user-corner/technical-library/hrl-imperviousness-technical-document-prod-2015

Validation report for the Imperviousness 2015: https://geoportal.ymparisto.fi/meta/julkinen/Dokumentit/verification_report_HRL2015_IMD_Finland.pdf

Technical document for the Imperviousness 2018: https://land.copernicus.eu/user-corner/technical-library/imperviousness-2018-user-manual.pdf

Background information: http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32013R1159

Aineistosta vastaava taho

Suomen ympäristökeskus
gistuki@syke.fi

Aineiston päivitys

Aineistoa on päivitetty viimeksi 18.8.2020

Aineiston historiatiedot

Production and updating of the high resolution layers (including the degree of imperviousness) are organized centrally covering whole of EU by European Environment Agency (EEA) as part of Copernicus land monitoing (land.copernicus.eu). The details of the production methods can be found in the documents linked at the top of this metadata page. Finnish Environment Institute and National Board of Survey (former Finnish Geodetic Institute) validated and enhanced the data covering Finland for the reference year 2012. National data sources, for example topographic database, Digiroad and high resolution Corine land cover 2012 were utilized in the enhancement. Data for the reference year 2015 have been validated by the Finnish Environment Institute together with the Natural Resources Institute. The validation of the data for reference year 2018 is going on and will be finished in June 2021. The enhancement report for year 2012 and validation report for year 2015 can be found in the links above. The validation report for the year 2018 will be added later. Processing history: High resolution layer imperviousness 2012 includes gaps due to clouds and their shadows in the input satellite data coverage. The gaps were filled in the Finnish Environment Institute using imperviousness data in the reference years 2006 and 2009. Data for the reference years 2015 and 2018 have not been processed further in Syke. datacopernicuslandhrl Täältä löytyy kunkin vuoden aineistot gdb ja tiff -muodoissa. Imperviousness2012-kansiossa on myös lähdetiedosto imperviousness2012_source, josta löytyvät Syken enhancement-prosessissa muokkaamat alueet.

Aineiston metatiedot

Metatiedoista vastaa:

Suomen ympäristökeskus
gistuki@syke.fi

Metatiedot päivitetty 14.7.2022

Alkuperäinen metatiedon lähde

Aineiston tyyppi: dataset