Journal article
Authors list: Graf, Alexander; Klosterhalfen, Anne; Arriga, Nicola; Bernhofer, Christian; Bogena, Heye; Bornet, Frederic; Brueggemann, Nicolas; Bruemmer, Christian; Buchmann, Nina; Chi, Jinshu; Chipeaux, Christophe; Cremonese, Edoardo; Cuntz, Matthias; Dusek, Jiri; El-Madany, Tarek S.; Fares, Silvano; Fischer, Milan; Foltynova, Lenka; Gharun, Mana; Ghiasi, Shiva; Gielen, Bert; Gottschalk, Pia; Gruenwald, Thomas; Heinemann, Guenther; Heinesch, Bernard; Heliasz, Michal; Holst, Jutta; Hoertnagl, Lukas; Ibrom, Andreas; Ingwersen, Joachim; Jurasinski, Gerald; Klatt, Janina; Knohl, Alexander; Koebsch, Franziska; Konopka, Jan; Korkiakoski, Mika; Kowalska, Natalia; Kremer, Pascal; Kruijt, Bart; Lafont, Sebastien; Leonard, Joel; De Ligne, Anne; Longdoz, Bernard; Loustau, Denis; Magliulo, Vincenzo; Mammarella, Ivan; Manca, Giovanni; Mauder, Matthias; Migliavacca, Mirco; Molder, Meelis; Neirynck, Johan; Ney, Patrizia; Nilsson, Mats; Paul-Limoges, Eugenie; Peichl, Matthias; Pitacco, Andrea; Poyda, Arne; Rebmann, Corinna; Roland, Marilyn; Sachs, Torsten; Schmidt, Marius; Schrader, Frederik; Siebicke, Lukas; Sigut, Ladislav; Tuittila, Eeva-Stiina; Varlagin, Andrej; Vendrame, Nadia; Vincke, Caroline; Voelksch, Ingo; Weber, Stephan; Wille, Christian; Wizemann, Hans-Dieter; Zeeman, Matthias; Vereecken, Harry
Publication year: 2020
Journal: Philosophical Transactions of the Royal Society. B: Biological Sciences
Volume number: 375
Issue number: 1810
ISSN: 0962-8436
eISSN: 1471-2970
DOI Link: https://doi.org/10.1098/rstb.2019.0524
Publisher: The Royal Society
Abstract:
Drought and heat events, such as the 2018 European drought, interact with the exchange of energy between the land surface and the atmosphere, potentially affecting albedo, sensible and latent heat fluxes, as well as CO(2)exchange. Each of these quantities may aggravate or mitigate the drought, heat, their side effects on productivity, water scarcity and global warming. We used measurements of 56 eddy covariance sites across Europe to examine the response of fluxes to extreme drought prevailing most of the year 2018 and how the response differed across various ecosystem types (forests, grasslands, croplands and peatlands). Each component of the surface radiation and energy balance observed in 2018 was compared to available data per site during a reference period 2004-2017. Based on anomalies in precipitation and reference evapotranspiration, we classified 46 sites as drought affected. These received on average 9% more solar radiation and released 32% more sensible heat to the atmosphere compared to the mean of the reference period. In general, drought decreased net CO(2)uptake by 17.8%, but did not significantly change net evapotranspiration. The response of these fluxes differed characteristically between ecosystems; in particular, the general increase in the evaporative index was strongest in peatlands and weakest in croplands. This article is part of the theme issue 'Impacts of the 2018 severe drought and heatwave in Europe: from site to continental scale'.
Citation Styles
Harvard Citation style: Graf, A., Klosterhalfen, A., Arriga, N., Bernhofer, C., Bogena, H., Bornet, F., et al. (2020) Altered energy partitioning across terrestrial ecosystems in the European drought year 2018, Philosophical Transactions of the Royal Society B: Biological Sciences, 375(1810), Article 20190524. https://doi.org/10.1098/rstb.2019.0524
APA Citation style: Graf, A., Klosterhalfen, A., Arriga, N., Bernhofer, C., Bogena, H., Bornet, F., Brueggemann, N., Bruemmer, C., Buchmann, N., Chi, J., Chipeaux, C., Cremonese, E., Cuntz, M., Dusek, J., El-Madany, T., Fares, S., Fischer, M., Foltynova, L., Gharun, M., ...Vereecken, H. (2020). Altered energy partitioning across terrestrial ecosystems in the European drought year 2018. Philosophical Transactions of the Royal Society B: Biological Sciences. 375(1810), Article 20190524. https://doi.org/10.1098/rstb.2019.0524
Keywords
BALANCE CLOSURE; Energy balance; HEAT; heat flux; net carbon uptake; WATER-USE EFFICIENCY
