Are Finnish trees growing or shrinking? 

EMD has evaluated the annual tree-growth using the recent Finnish LUKE data from 2021 comparing it to 2015 data.

As seen from graph below, average tree growth is positive for trees with a height to about 15m, then it becomes negative (on average) due to tree-felling and active forestry. Only areas marked with “Forest” as land-cover has been used in this short evaluation.
It is based on sampled data from random 125000 locations in Finland.

The update to the “Finnish LUKE Forest Map” has just been released into the windPRO online-data services.

The data from years 2021, 2019 and 2015 are available for users of windPRO 3.6 and 4.0 for use in the forest models available in windPRO: The displacement height calculator and the ORA tool.
With a few clicks you can easily select a different forest model and update your AEP.

Questions or comments? Please let us know at emd@emd.dk !

Read more here.

Image
Example of Forest Inventory of Finland – Part of Metsälä Wind Farm.

Acknowledgement
The Natural Resources Institute Finland / Luonnonvarakeskus (Luke) is acknowledged for development and release of the open dataset of Finnish forest data – and thus for aiding the development of wind energy in forested areas. Data-source: The Multi-Source National Forest Inventory Raster Maps of 2021 – Copyright (C) Natural Resources Institute Finland, 2023 & 2017. Distribution through EMD and windPRO.