EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Impacts of global re-/afforestation and deforestation on large scale atmospheric circulation

Iris Manola1, Dim Coumou1, Andrea Alessandri2, Edouard Davin3, Suqi Guo4, Felix Havermann4, Steven De Hertog5, Quentin Lejeune6, Inga Menke6, Julia Pongratz4,7, Carl Schleussner6, Sonia Seneviratne3, and Wim Thiery5
Iris Manola et al.
  • 1Vrije Universiteit Amsterdam, Institute for Environmental studies, Amsterdam, The Netherlands.
  • 2Royal Netherlands Meteorological Institute, R&D Weather and Climate Modeling, De Bilt, The Netherlands
  • 3ETH Zurich, Institute for Atmospheric and Climate Science, 8092 Zurich, Switzerland.
  • 4Ludwig-Maximilians-University Munich, Department of Geography, Munich, Germany.
  • 5Vrije Universiteit Brussel, Department of Hydrology and Hydraulic Engineering, Brussels, Belgium.
  • 6Climate Analytics, Berlin, Germany.
  • 7Max Planck Institute for Meteorology, Hamburg, Germany.

Land cover and land management (LCLM) changes have a high potential to influence the biogeophysical and biogeochemical earth system processes. The interaction of soil and vegetation with the atmosphere alternates the water, energy and momentum balance, in turn affecting the climate locally, as well as the climate of distant regions through teleconnection pathways. This, among others, might benefit or oppose risks to local and global breadbasket regions, impacting the crop yields.

In this study, we conduct model experiments to assess the local and remote impact of LCLM changes, in particular global re-/afforestation and deforestation, with a focus on the large-scale boreal summer atmospheric circulation. We hypothesize that due to the dominant role of land-atmosphere feedbacks in this season, robust dynamical transformations take place due to the LCLM changes. The idealized model experiments consist of three fully coupled Earth System Models (EC-EARTH, MPI-ESM and CESM) that run under constant 2015 greenhouse forcing for 150 years. Globally the LCLM changes go through a sequence of unchanged grid boxes in a checkerboard approach as recent studies have done, in order to accurately separate the local from the non-local effects.

How to cite: Manola, I., Coumou, D., Alessandri, A., Davin, E., Guo, S., Havermann, F., De Hertog, S., Lejeune, Q., Menke, I., Pongratz, J., Schleussner, C., Seneviratne, S., and Thiery, W.: Impacts of global re-/afforestation and deforestation on large scale atmospheric circulation, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-19444,, 2020

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