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The opposing effects of reforestation and afforestation on the diurnal temperature cycle at the surface and in the lowest atmospheric model level in the European summer

Breil, Marcus; Rechid, D.; Davin, E. L.; De Noblet-Ducoudré, N.; Katragkou, E.; Cardoso, R. M.; Hoffmann, P.; Jach, L. L.; Soares, P. M. M.; Sofiadis, G.; Strada, S.; Strandberg, G.; Tölle, M. H.; Warrach-Sagi, K.

The biophysical effects of reforestation and afforestation (herein jointly called re/afforestation) on the diurnal temperature cycle in European summer are investigated by analyzing a regional climate model (RCM) ensemble, established within the Land Use and Climate Across Scales Flagship Pilot Study (LUCAS FPS). With this RCM ensemble, two idealized experiments are performed for Europe, one with a continent with maximized forest cover, and one in which all forests are turned into grassland. First, an in-depth analysis of one ensemble member (“CCLM-VEG3D”) is carried out, to reveal the complex process chain caused by such land use changes (LUCs). From these findings, the whole ensemble is analyzed and principal biophysical effects of re/afforestation are derived. Results show that the diurnal temperature range is reduced at the surface (top of the vegetation) with re/afforestation. Most RCMs simulate colder surface temperatures T$_[surf]$ during the day and warmer T$_[surf]$ during the night. Thus, for the first time, the principal temperature interrelations found in observation-based studies in the midlatitudes could be reproduced within a model intercomparison study. ... mehr

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DOI: 10.1175/JCLI-D-19-0624.1
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Forschungsbereich Troposphäre (IMK-TRO)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 0894-8755, 1520-0442
KITopen-ID: 1000125656
Erschienen in Journal of climate
Band 33
Heft 21
Seiten 9159-9179
Schlagwörter Europe, Vegetation-atmosphere interactions, Surface temperature, Land surface model, Regional models, Land use
Nachgewiesen in Scopus
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