On the influence of peatland draining on local climate

In no other country has the draining of peatland taken place to such a large extent as in Finland. According to earlier studies based on an analysis of observed temperatures, this draining has lowered the night-time minimum temperatures in heavily-drained regions. In the present study, we simulated...

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Bibliographic Details
Main Authors: Venäläinen, A., Rontu, L., Solantie, R.
Format: Article in Journal/Newspaper
Language:English
Published: Boreal Environment Research Publishing Board 2024
Subjects:
Online Access:http://hdl.handle.net/10138/578047
Description
Summary:In no other country has the draining of peatland taken place to such a large extent as in Finland. According to earlier studies based on an analysis of observed temperatures, this draining has lowered the night-time minimum temperatures in heavily-drained regions. In the present study, we simulated the cooling effect using the HIRLAM numerical weather prediction model. When simulated wet and dry peat conditions were compared in a late summer clear and calm case leading to night frost, the drop in local night-time minimum temperatures reached ten degrees. The difference in temperature was caused mainly by the change in the soil heat flux.