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Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1098/rstb.2019.0524
Volltext Akzeptiertes Manuskript
Titel (primär) Altered energy partitioning across terrestrial ecosystems in the European drought year 2018
Autor Graf, A.; Klosterhalfen, A.; Arriga, N.; Bernhofer, C.; Bogena, H.; Bornet, F.; Brüggemann, N.; Brümmer, C.; Buchmann, N.; Chi, J.; Chipeaux, C.; Cremonese, E.; Cuntz, M.; Dušek, J.; El-Madany, T.S.; Fares, S.; Fischer, M.; Foltýnová, L.; Gharun, M.; Ghiasi, S.; Gielen, B.; Gottschalk, P.; Grünwald, T.; Heinemann, G.; Heinesch, B.; Heliasz, M.; Holst, J.; Hörtnagl, L.; Ibrom, A.; Ingwersen, J.; Jurasinski, G.; Klatt, J.; Knohl, A.; Koebsch, F.; Konopka, J.; Korkiakoski, M.; Kowalska, N.; Kremer, P.; Kruijt, B.; Lafont, S.; Léonard, J.; de Ligne, A.; Longdoz, B.; Loustau, D.; Magliulo, V.; Mammarella, I.; Manca, G.; Mauder, M.; Migliavacca, M.; Mölder, M.; Neirynck, J.; Ney, P.; Nilsson, M.; Paul-Limoges, E.; Peichl, M.; Pitacco, A.; Poyda, A.; Rebmann, C.; Roland, M.; Sachs, T.; Schmidt, M.; Schrader, F.; Siebicke, L.; Šigut, L.; Tuittila, E.-S.; Varlagin, A.; Vendrame, N.; Vincke, C.; Völksch, I.; Weber, S.; Wille, C.; Wizemann, H.-D.; Zeeman, M.; Vereecken, H.
Quelle Philosophical Transactions of the Royal Society B-Biological Sciences
Erscheinungsjahr 2020
Department CHS
Band/Volume 375
Heft 1810
Seite von art. 20190524
Sprache englisch
Keywords eddy covariance; energy balance; evapotranspiration; heat flux; net carbon uptake; water-use efficiency
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 CO2 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 CO2 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.
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Graf, A., Klosterhalfen, A., Arriga, N., Bernhofer, C., Bogena, H., Bornet, F., Brüggemann, N., Brümmer, C., Buchmann, N., Chi, J., Chipeaux, C., Cremonese, E., Cuntz, M., Dušek, J., El-Madany, T.S., Fares, S., Fischer, M., Foltýnová, L., Gharun, M., Ghiasi, S., Gielen, B., Gottschalk, P., Grünwald, T., Heinemann, G., Heinesch, B., Heliasz, M., Holst, J., Hörtnagl, L., Ibrom, A., Ingwersen, J., Jurasinski, G., Klatt, J., Knohl, A., Koebsch, F., Konopka, J., Korkiakoski, M., Kowalska, N., Kremer, P., Kruijt, B., Lafont, S., Léonard, J., de Ligne, A., Longdoz, B., Loustau, D., Magliulo, V., Mammarella, I., Manca, G., Mauder, M., Migliavacca, M., Mölder, M., Neirynck, J., Ney, P., Nilsson, M., Paul-Limoges, E., Peichl, M., Pitacco, A., Poyda, A., Rebmann, C., Roland, M., Sachs, T., Schmidt, M., Schrader, F., Siebicke, L., Šigut, L., Tuittila, E.-S., Varlagin, A., Vendrame, N., Vincke, C., Völksch, I., Weber, S., Wille, C., Wizemann, H.-D., Zeeman, M., Vereecken, H. (2020):
Altered energy partitioning across terrestrial ecosystems in the European drought year 2018
Philos. Trans. R. Soc. B-Biol. Sci. 375 (1810), art. 20190524 10.1098/rstb.2019.0524