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The PDF in this link states that the CORINE land cover 2000 used ETSR89 as its coordinate reference system: http://www.eea.europa.eu/publications/technical_report_2006_7

I wanted to check I am reading this correctly: did CORINE 2000 use ETSR89 as its coordinate reference system?

In addition, what would be an appropriate coordinate reference system to re-project CORINE 2000 over the UK?

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The projected coordinate reference system is based upon ETRS89, yes. The projected coordinate reference system is EPSG:3035, ETRS89 / LAEA Europe, which you can find out by checking the metadata at the EEA. LAEA is an acronym for Lambert azimuthal equal area.

If I understand the technical report correctly, the LUCAS data was converted from ETRS89 to particular localized coordinate reference systems [to match CLC2000], perhaps before the CLC2000 data was combined into a single dataset?

4

To answer the second part of your question regarding the correct projection for CLC over the UK, I would suggest you use EPSG:27700.

For instance, assuming you have subset the data for the UK, you could then use gdalwarp as follows:

gdalwarp -s_srs "EPSG:3035" -t_srs "EPSG:27700" original_clc.shp output_clc_uk.shp

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