Elevation model 2 m

Elevation model 2 m is a model depicting the elevation of the ground surface in relation to sea level. Its grid size is 2 m x 2 m. The dataset is based on laser scanning data, the point density of which is at least 0.5 points per square metre. The product is available as versions with different coverage areas through-out the whole country but not as comprehensive. New data is added to the dataset continuously. Eleva-tion model 10 m is available as a version that covers the whole of Finland.

Elevation model 2 m is produced in two quality classes: the elevation accuracy in class I is on average 0.3 metres and the elevation accuracy in class II varies between 0.3 metres and one metre.

The product belongs to the open data of the National Land Survey of Finland. More information: Topographic data and how to acquire it http://www.maanmittauslaitos.fi/en/maps-and-spatial-data/expert-users/topographic-data-and-how-acquire-it

Purpose:

The elevation model allows for example simulation of areas with a high risk of flooding or that of receiving, coverage and service areas. The model can also be used for mass calculation of excavated material and land-fill and for calculating inclinations, steepness or profiles. Application areas are found, for example in geol-ogy, geography and forestry.

Geographic location
Entire Finland
Responsible party

National Land Survey of Finland

Pixel size
2 m
Spatial representation
Text or table
Maintenance

The product is maintained if needed, but the area of coverage is expanded continuously. An up-to-date map of the area of coverage (in Finnish): https://www.maanmittauslaitos.fi/maastotiedonyllapito

Lineage

Elevation model 2 m depicts the height of the terrain above sea level. The height values are in accordance with the system N2000.

Elevation model 2 m is the most accurate elevation model of Finland which covers extensive areas. Approximately 40,000 square kilometres are added into the model every year.

Elevation model 2 m is derived from laser scanning data, with a minimum point density of 0.5 per square metres. The dataset is produced in two quality classes:

The elevation model in class I is automatically calculated from the laser scanning data collected in the spring, but controlling and improving the calculation is done by using aerial photographs. Further control of the data is manual work.

The elevation model in class II is automatically calculated from the laser scanning data collected in the summer, and no manual control is performed. This way the elevation model data is produced faster.

The elevation model in class II will later be replaced by data from class I.

The accuracy of elevation data in quality class I is on average 0.3 metres. The elevation data is expressed in metres. When it comes to elevation and position accuracy, the product may contain parts that have been updated with such data that is not as accurate as laser scanning data.

The accuracy of the elevation model in class II varies between 0.3 metres and one metre because of the elevation-increasing effect of vegetation that varies locally.

More information in the quality model for Elevation model 2 m (in Finnish): http://www.maanmittauslaitos.fi/sites/maanmittauslaitos.fi/files/attachments/2017/05/KMTK_korkeusmallit_laatukasikirja_2017-01-02.pdf

Index for the coverage of quality classes I and II (in Finnish): https://www.maanmittauslaitos.fi/maastotiedonyllapito

Conformity
Information product specification: Elevation, COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services.
2010-12-08
The product does not meet the specifications.
Distributor

National Land Survey of Finland customerservice@nls.fi

Limitations on access

no limitations to public access

Reference system
ETRS89 / TM35FIN(E,N) (EPSG:3067)
N2000 height (EPSG:3900)
Distribution format
Ascii grid
GeoTiff

Korkeusmallit

Product Price € (excl. VAT) Price € (incl. VAT)
77103010090
Korkeusmalli 2m ja 10m ensimmäinen lehti
89,27 110,70
77103010091
Korkeusmalli 2m ja 10m seuraavat lehdet
15,73 19,50
77103010093
Korkeusmalli 2m koko Suomi
1575,00 1 953,00
77103010092
Korkeusmalli 10m koko Suomi
787,50 976,50
Not based on a decree