The response of the regional longwave radiation balance and climate system in Europe to an idealized afforestation experiment

The response of the regional longwave radiation balance and climate system in Europe to an idealized afforestation experiment

Afforestation is an important mitigation strategy for climate change due to its carbon sequestration potential. Besides this favorable biogeochemical effect on global CO2 concentrations, afforestation also affects the regional climate by changing the biogeophysical land surface characteristics. In t...

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Bibliographic Details
Published in:Earth system dynamics Vol. 14; no. 1; pp. 243 - 253
Main Authors: Breil, Marcus, Krawczyk, Felix, Pinto, Joaquim G
Format: Journal Article
Language:English
Published: Gottingen Copernicus GmbH 27-02-2023
Copernicus Publications
Subjects:
Afforestation
Atmospheric temperature
Biogeochemistry
Carbon
Carbon dioxide
Carbon sequestration
Climate change
Climate system
Climatic changes
Emissions
Experiments
Forests
Grasslands
Land use
Long wave radiation
Mitigation
Moisture effects
Radiation
Radiation balance
Reduction
Regional climates
Simulation
Surface properties
Surface temperature
Europe
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Summary:Afforestation is an important mitigation strategy for climate change due to its carbon sequestration potential. Besides this favorable biogeochemical effect on global CO2 concentrations, afforestation also affects the regional climate by changing the biogeophysical land surface characteristics. In this study, we investigate the effects of an idealized global CO2 reduction to pre-industrial conditions by a Europe-wide afforestation experiment on the regional longwave radiation balance, starting in the year 1986 on a continent entirely covered with grassland. Results show that the impact of biogeophysical processes on the surface temperatures is much stronger than that of biogeochemical processes. Furthermore, biogeophysically induced changes of the surface temperatures, atmospheric temperatures, and moisture concentrations are as important for the regional longwave radiation balance as the global CO2 reduction. While the outgoing longwave radiation is increased in winter, it is reduced in summer. In terms of annual total, a Europe-wide afforestation has a regional warming effect despite reduced CO2 concentrations. Thus, even for an idealized reduction of the global CO2 concentrations to pre-industrial levels, the European climate response to afforestation would still be dominated by its biogeophysical effects.
ISSN:2190-4987
2190-4979
2190-4987
DOI:10.5194/esd-14-243-2023