TY  - JOUR
AU  - Graf, Alexander
AU  - Klosterhalfen, Anne
AU  - Arriga, Nicola
AU  - Bernhofer, Christian
AU  - Bogena, Heye
AU  - Bornet, Frédéric
AU  - Brüggemann, Nicolas
AU  - Brümmer, Christian
AU  - Buchmann, Nina
AU  - Chi, Jinshu
AU  - Chipeaux, Christophe
AU  - Cremonese, Edoardo
AU  - Cuntz, Matthias
AU  - Dušek, Jiří
AU  - El-Madany, Tarek S.
AU  - Fares, Silvano
AU  - Fischer, Milan
AU  - Foltýnová, Lenka
AU  - Gharun, Mana
AU  - Ghiasi, Shiva
AU  - Gielen, Bert
AU  - Gottschalk, Pia
AU  - Grünwald, Thomas
AU  - Heinemann, Günther
AU  - Heinesch, Bernard
AU  - Heliasz, Michal
AU  - Holst, Jutta
AU  - Hörtnagl, Lukas
AU  - Ibrom, Andreas
AU  - Ingwersen, Joachim
AU  - Jurasinski, Gerald
AU  - Klatt, Janina
AU  - Knohl, Alexander
AU  - Koebsch, Franziska
AU  - Konopka, Jan
AU  - Korkiakoski, Mika
AU  - Kowalska, Natalia
AU  - Kremer, Pascal
AU  - Kruijt, Bart
AU  - Lafont, Sebastien
AU  - Léonard, Joël
AU  - De Ligne, Anne
AU  - Longdoz, Bernard
AU  - Loustau, Denis
AU  - Magliulo, Vincenzo
AU  - Mammarella, Ivan
AU  - Manca, Giovanni
AU  - Mauder, Matthias
AU  - Migliavacca, Mirco
AU  - Mölder, Meelis
AU  - Neirynck, Johan
AU  - Ney, Patrizia
AU  - Nilsson, Mats
AU  - Paul-Limoges, Eugénie
AU  - Peichl, Matthias
AU  - Pitacco, Andrea
AU  - Poyda, Arne
AU  - Rebmann, Corinna
AU  - Roland, Marilyn
AU  - Sachs, Torsten
AU  - Schmidt, Marius
AU  - Schrader, Frederik
AU  - Siebicke, Lukas
AU  - Šigut, Ladislav
AU  - Tuittila, Eeva-Stiina
AU  - Varlagin, Andrej
AU  - Vendrame, Nadia
AU  - Vincke, Caroline
AU  - Völksch, Ingo
AU  - Weber, Stephan
AU  - Wille, Christian
AU  - Wizemann, Hans-Dieter
AU  - Zeeman, Matthias
AU  - Vereecken, Harry
TI  - Altered energy partitioning across terrestrial ecosystems in the European drought year 2018
JO  - Philosophical transactions / B Biological sciences Series B
VL  - 375
IS  - 1810
SN  - 1471-2970
CY  - London
PB  - Royal Society
M1  - FZJ-2020-03088
SP  - 20190524 -
PY  - 2020
AB  - 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.This article is part of the theme issue ‘Impacts of the 2018 severe drought and heatwave in Europe: from site to continental scale’.
LB  - PUB:(DE-HGF)16
C6  - pmid:32892732
UR  - <Go to ISI:>//WOS:000570228700005
DO  - DOI:10.1098/rstb.2019.0524
UR  - https://juser.fz-juelich.de/record/884091
ER  -