Journal Article

FZJ-2020-03088

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Altered energy partitioning across terrestrial ecosystems in the European drought year 2018

Graf, A. (Corresponding author)FZJ* ; Klosterhalfen, A. ; Arriga, N. ; Bernhofer, C. ; Bogena, H.FZJ* ; Bornet, F. ; Brüggemann, N.FZJ* ; 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.FZJ* ; 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.FZJ*

2020
Royal Society London

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Please use a persistent id in citations: http://hdl.handle.net/2128/26175  doi:10.1098/rstb.2019.0524

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.This article is part of the theme issue ‘Impacts of the 2018 severe drought and heatwave in Europe: from site to continental scale’.

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Contributing Institute(s):

1. Agrosphäre (IBG-3)

Research Program(s):

1. 255 - Terrestrial Systems: From Observation to Prediction (POF3-255) (POF3-255)
2. IDAS-GHG - Instrumental and Data-driven Approaches to Source-Partitioning of Greenhouse Gas Fluxes: Comparison, Combination, Advancement (BMBF-01LN1313A) (BMBF-01LN1313A)
3. TERENO - Terrestrial Environmental Observatories (TERENO-2008) (TERENO-2008)
4. ICOS - Integrated Carbon Observation System (211574) (211574)

Appears in the scientific report 2020

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Database coverage:
; ; BIOSIS Previews ; Biological Abstracts ; Clarivate Analytics Master Journal List ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Life Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; National-Konsortium ; PubMed Central ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection ; Zoological Record

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