1
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Ping J, Cui E, Du Y, Wei N, Zhou J, Wang J, Niu S, Luo Y, Xia J. Enhanced causal effect of ecosystem photosynthesis on respiration during heatwaves. SCIENCE ADVANCES 2023; 9:eadi6395. [PMID: 37878695 PMCID: PMC10599625 DOI: 10.1126/sciadv.adi6395] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 09/21/2023] [Indexed: 10/27/2023]
Abstract
Because of global warming, Earth's ecosystems have been experiencing more frequent and severe heatwaves. Heatwaves are expected to tip terrestrial carbon sequestration by elevating ecosystem respiration and suppressing gross primary productivity (GPP). Here, using the convergent cross-mapping technique, this study detected positive bidirectional causal effects between GPP and respiration in two unprecedented European heatwaves. Heatwaves enhanced the causal effect strength of GPP on respiration rather than respiration on GPP across 40 site-years of observations. Further analyses and global simulations revealed spatial heterogeneity in the heatwave response of the causal link strength between GPP and respiration, which was jointly driven by the local climate and vegetation properties. However, the causal effect strength of GPP on respiration showed considerable uncertainties in CMIP6 models. This study reveals an enhanced causal link strength between GPP and respiration during heatwaves, shedding light on improving projections for terrestrial carbon sink dynamics under future climate extremes.
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Affiliation(s)
- Jiaye Ping
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, State Key Laboratory of Estuarine and Coastal Research, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
- Research Center for Global Change and Complex Ecosystems, Institute of Eco-Chongming, East China Normal University, Shanghai 200241, China
| | - Erqian Cui
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, State Key Laboratory of Estuarine and Coastal Research, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
- Research Center for Global Change and Complex Ecosystems, Institute of Eco-Chongming, East China Normal University, Shanghai 200241, China
| | - Ying Du
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, State Key Laboratory of Estuarine and Coastal Research, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
- Research Center for Global Change and Complex Ecosystems, Institute of Eco-Chongming, East China Normal University, Shanghai 200241, China
| | - Ning Wei
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, State Key Laboratory of Estuarine and Coastal Research, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
- Research Center for Global Change and Complex Ecosystems, Institute of Eco-Chongming, East China Normal University, Shanghai 200241, China
| | - Jian Zhou
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, State Key Laboratory of Estuarine and Coastal Research, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
- School of Integrative Plant Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY, 14850, USA
| | - Jing Wang
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, State Key Laboratory of Estuarine and Coastal Research, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
- Research Center for Global Change and Complex Ecosystems, Institute of Eco-Chongming, East China Normal University, Shanghai 200241, China
| | - Shuli Niu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Yiqi Luo
- School of Integrative Plant Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY, 14850, USA
| | - Jianyang Xia
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, State Key Laboratory of Estuarine and Coastal Research, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
- Research Center for Global Change and Complex Ecosystems, Institute of Eco-Chongming, East China Normal University, Shanghai 200241, China
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2
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Lohani P, Mukherjee S, Sekar KC, Mehta P, Kumar K, Dimri AP. Impact of monsoon season rainfall spells on the ecosystem carbon exchanges of Himalayan Chir-Pine and Banj-Oak-dominated forests: a comparative assessment. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:827. [PMID: 37294356 DOI: 10.1007/s10661-023-11297-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 04/24/2023] [Indexed: 06/10/2023]
Abstract
The Chir-Pine (Pinus roxburghii) and Banj-Oak (Quercus leucotrichophora)-dominated ecosystems of central Himalaya provide significant green services. However, responses of these ecosystems, with respect to ecosystem carbon flux variability, to changing microclimate are not yet studied. Since quantification of ecosystem responses to fluctuation in the microclimate, particularly rainfall, is expected to be beneficial for management of these ecosystems, this study aims (i) to quantify and compare amplitude of rainfall-induced change in the carbon fluxes of Chir-Pine and Banj-Oak-dominated ecosystems using wavelet methods, and (ii) to quantify and compare dissimilarities in the ecosystem exchanges due to varying rainfall spell and amount. Eddy covariance-based continuous daily micrometeorological and flux data, during the 2016-2017 monsoon seasons (total 244 days, 122 days of June-September), from two sites in Uttarakhand, India, are used for this purpose. We find that both Chir-Pine and Banj-Oak-dominated ecosystems are the sinks of carbon, and Chir-Pine-dominated ecosystem sequesters around 1.8 times higher carbon than the Banj-Oak. A systematic enhancement in the carbon assimilation of the Chir-Pine-dominated ecosystem is noted with increasing rainfall spell following a statistically significant power-law relationship. We have also identified a rainfall amount threshold for Chir-Pine and Banj-Oak-dominated ecosystems (10 ± 0.7 and 17 ± 1.2 mm, respectively) that resulted in highest ecosystem carbon assimilation in monsoon. The general inference of this study accentuates that Banj-Oak-dominated ecosystem is more sensitive to maximum rain within a spell whereas the Chir-Pine-dominated ecosystem is more responsive to increasing rainfall spell duration.
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Affiliation(s)
- Priyanka Lohani
- G. B. Pant National Institute of Himalayan Environment, Kosi-Katarmal, Almora, Uttarakhand, India
| | - Sandipan Mukherjee
- Ladakh Regional Centre, G. B. Pant National Institute of Himalayan Environment, Leh, India.
| | - K Chandra Sekar
- Garhwal Regional Centre, G. B. Pant National Institute of Himalayan Environment, Srinagar, Garhwal, India
| | - Pooja Mehta
- Garhwal Regional Centre, G. B. Pant National Institute of Himalayan Environment, Srinagar, Garhwal, India
| | - Kireet Kumar
- G. B. Pant National Institute of Himalayan Environment, Kosi-Katarmal, Almora, Uttarakhand, India
| | - A P Dimri
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
- Indian Institute of Geomagnetism, Mumbai, Maharastra, India
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3
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Pohl F, Rakovec O, Rebmann C, Hildebrandt A, Boeing F, Hermanns F, Attinger S, Samaniego L, Kumar R. Long-term daily hydrometeorological drought indices, soil moisture, and evapotranspiration for ICOS sites. Sci Data 2023; 10:281. [PMID: 37179354 PMCID: PMC10183025 DOI: 10.1038/s41597-023-02192-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
Eddy covariance sites are ideally suited for the study of extreme events on ecosystems as they allow the exchange of trace gases and energy fluxes between ecosystems and the lower atmosphere to be directly measured on a continuous basis. However, standardized definitions of hydroclimatic extremes are needed to render studies of extreme events comparable across sites. This requires longer datasets than are available from on-site measurements in order to capture the full range of climatic variability. We present a dataset of drought indices based on precipitation (Standardized Precipitation Index, SPI), atmospheric water balance (Standardized Precipitation Evapotranspiration Index, SPEI), and soil moisture (Standardized Soil Moisture Index, SSMI) for 101 ecosystem sites from the Integrated Carbon Observation System (ICOS) with daily temporal resolution from 1950 to 2021. Additionally, we provide simulated soil moisture and evapotranspiration for each site from the Mesoscale Hydrological Model (mHM). These could be utilised for gap-filling or long-term research, among other applications. We validate our data set with measurements from ICOS and discuss potential research avenues.
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Affiliation(s)
- Felix Pohl
- Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318, Leipzig, Germany.
| | - Oldrich Rakovec
- Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318, Leipzig, Germany
- Czech University of Life Sciences Prague, Faculty of Environmental Sciences, Kamýcká 129, Praha-Suchdol, 165 00, Czech Republic
| | - Corinna Rebmann
- Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318, Leipzig, Germany
| | - Anke Hildebrandt
- Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318, Leipzig, Germany
- Friedrich Schiller University Jena, Institute of Geoscience, Burgweg 11, 07749, Jena, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany
| | - Friedrich Boeing
- Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318, Leipzig, Germany
| | - Floris Hermanns
- Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318, Leipzig, Germany
| | - Sabine Attinger
- Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318, Leipzig, Germany
- University of Potsdam, Institute of Environmental Science and Geography, Am Neuen Palais 10, 14469, Potsdam, Germany
| | - Luis Samaniego
- Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318, Leipzig, Germany
- University of Potsdam, Institute of Environmental Science and Geography, Am Neuen Palais 10, 14469, Potsdam, Germany
| | - Rohini Kumar
- Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318, Leipzig, Germany
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4
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Meusburger K, Trotsiuk V, Schmidt‐Walter P, Baltensweiler A, Brun P, Bernhard F, Gharun M, Habel R, Hagedorn F, Köchli R, Psomas A, Puhlmann H, Thimonier A, Waldner P, Zimmermann S, Walthert L. Soil-plant interactions modulated water availability of Swiss forests during the 2015 and 2018 droughts. GLOBAL CHANGE BIOLOGY 2022; 28:5928-5944. [PMID: 35795901 PMCID: PMC9546155 DOI: 10.1111/gcb.16332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 07/02/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
Central Europe has been experiencing unprecedented droughts during the last decades, stressing the decrease in tree water availability. However, the assessment of physiological drought stress is challenging, and feedback between soil and vegetation is often omitted because of scarce belowground data. Here we aimed to model Swiss forests' water availability during the 2015 and 2018 droughts by implementing the mechanistic soil-vegetation-atmosphere-transport (SVAT) model LWF-Brook90 taking advantage of regionalized depth-resolved soil information. We calibrated the model against soil matric potential data measured from 2014 to 2018 at 44 sites along a Swiss climatic and edaphic drought gradient. Swiss forest soils' storage capacity of plant-available water ranged from 53 mm to 341 mm, with a median of 137 ± 42 mm down to the mean potential rooting depth of 1.2 m. Topsoil was the primary water source. However, trees switched to deeper soil water sources during drought. This effect was less pronounced for coniferous trees with a shallower rooting system than for deciduous trees, which resulted in a higher reduction of actual transpiration (transpiration deficit) in coniferous trees. Across Switzerland, forest trees reduced the transpiration by 23% (compared to potential transpiration) in 2015 and 2018, maintaining annual actual transpiration comparable to other years. Together with lower evaporative fluxes, the Swiss forests did not amplify the blue water deficit. The 2018 drought, characterized by a higher and more persistent transpiration deficit than in 2015, triggered widespread early wilting across Swiss forests that was better predicted by the SVAT-derived mean soil matric potential in the rooting zone than by climatic predictors. Such feedback-driven quantification of ecosystem water fluxes in the soil-plant-atmosphere continuum will be crucial to predicting physiological drought stress under future climate extremes.
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Affiliation(s)
- Katrin Meusburger
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
| | - Volodymyr Trotsiuk
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
| | - Paul Schmidt‐Walter
- Agrometeorological Research CenterGerman Weather Service (DWD)BraunschweigGermany
| | - Andri Baltensweiler
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
| | - Philipp Brun
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
| | - Fabian Bernhard
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
| | - Mana Gharun
- Department of Environmental Systems ScienceETH ZürichZürichSwitzerland
- Department of GeosciencesUniversity of MünsterMünsterGermany
| | - Raphael Habel
- Department of Soil and EnvironmentForest Research Institute Baden WürttembergFreiburgGermany
| | - Frank Hagedorn
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
| | - Roger Köchli
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
| | - Achilleas Psomas
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
| | - Heike Puhlmann
- Department of Soil and EnvironmentForest Research Institute Baden WürttembergFreiburgGermany
| | - Anne Thimonier
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
| | - Peter Waldner
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
| | - Stephan Zimmermann
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
| | - Lorenz Walthert
- Swiss Federal Institute for ForestSnow and Landscape Research (WSL)BirmensdorfSwitzerland
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5
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Ramonet M, Ciais P, Apadula F, Bartyzel J, Bastos A, Bergamaschi P, Blanc PE, Brunner D, Caracciolo di Torchiarolo L, Calzolari F, Chen H, Chmura L, Colomb A, Conil S, Cristofanelli P, Cuevas E, Curcoll R, Delmotte M, di Sarra A, Emmenegger L, Forster G, Frumau A, Gerbig C, Gheusi F, Hammer S, Haszpra L, Hatakka J, Hazan L, Heliasz M, Henne S, Hensen A, Hermansen O, Keronen P, Kivi R, Komínková K, Kubistin D, Laurent O, Laurila T, Lavric JV, Lehner I, Lehtinen KEJ, Leskinen A, Leuenberger M, Levin I, Lindauer M, Lopez M, Myhre CL, Mammarella I, Manca G, Manning A, Marek MV, Marklund P, Martin D, Meinhardt F, Mihalopoulos N, Mölder M, Morgui JA, Necki J, O'Doherty S, O'Dowd C, Ottosson M, Philippon C, Piacentino S, Pichon JM, Plass-Duelmer C, Resovsky A, Rivier L, Rodó X, Sha MK, Scheeren HA, Sferlazzo D, Spain TG, Stanley KM, Steinbacher M, Trisolino P, Vermeulen A, Vítková G, Weyrauch D, Xueref-Remy I, Yala K, Yver Kwok C. The fingerprint of the summer 2018 drought in Europe on ground-based atmospheric CO 2 measurements. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190513. [PMID: 32892733 DOI: 10.1098/rstb.2019.0513] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
During the summer of 2018, a widespread drought developed over Northern and Central Europe. The increase in temperature and the reduction of soil moisture have influenced carbon dioxide (CO2) exchange between the atmosphere and terrestrial ecosystems in various ways, such as a reduction of photosynthesis, changes in ecosystem respiration, or allowing more frequent fires. In this study, we characterize the resulting perturbation of the atmospheric CO2 seasonal cycles. 2018 has a good coverage of European regions affected by drought, allowing the investigation of how ecosystem flux anomalies impacted spatial CO2 gradients between stations. This density of stations is unprecedented compared to previous drought events in 2003 and 2015, particularly thanks to the deployment of the Integrated Carbon Observation System (ICOS) network of atmospheric greenhouse gas monitoring stations in recent years. Seasonal CO2 cycles from 48 European stations were available for 2017 and 2018. Earlier data were retrieved for comparison from international databases or national networks. Here, we show that the usual summer minimum in CO2 due to the surface carbon uptake was reduced by 1.4 ppm in 2018 for the 10 stations located in the area most affected by the temperature anomaly, mostly in Northern Europe. Notwithstanding, the CO2 transition phases before and after July were slower in 2018 compared to 2017, suggesting an extension of the growing season, with either continued CO2 uptake by photosynthesis and/or a reduction in respiration driven by the depletion of substrate for respiration inherited from the previous months due to the drought. For stations with sufficiently long time series, the CO2 anomaly observed in 2018 was compared to previous European droughts in 2003 and 2015. Considering the areas most affected by the temperature anomalies, we found a higher CO2 anomaly in 2003 (+3 ppm averaged over 4 sites), and a smaller anomaly in 2015 (+1 ppm averaged over 11 sites) compared to 2018. 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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Affiliation(s)
- M Ramonet
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - P Ciais
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - F Apadula
- Ricerca sul Sistema Energetico, Milan, Italy
| | - J Bartyzel
- AGH University of Science and Technology, 30059 Krakow, Poland
| | - A Bastos
- Department of Geography, Ludwig-Maximilians University, 80333 Munich, Germany
| | - P Bergamaschi
- European Commission, Joint Research Centre, Ispra, Italy
| | - P E Blanc
- Aix Marseille Univ, Avignon Université, CNRS, IRD, Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale (IMBE), Marseille, France
| | - D Brunner
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
| | | | - F Calzolari
- National Research Council, Institute of Atmospheric Sciences and Climate, Bologna, Italy
| | - H Chen
- Centre for Isotope Research (CIO), University of Groningen, Nijenborgh 6, 9747 AG Groningen, The Netherlands
| | - L Chmura
- AGH University of Science and Technology, 30059 Krakow, Poland
| | - A Colomb
- Université Clermont Auvergne, CNRS, Laboratoire de Météorologie Physique, UMR 6016, Clermont-Ferrand, France
| | - S Conil
- DRD/OPE, Andra, Bure, France
| | - P Cristofanelli
- National Research Council, Institute of Atmospheric Sciences and Climate, Bologna, Italy
| | - E Cuevas
- Izana Atmospheric Research Center, Meteorological State Agency of Spain, Tenerife, Spain
| | - R Curcoll
- Institut de Ciencia i Tecnologia Ambientals, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - M Delmotte
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - A di Sarra
- Agenzia Nazionale per le Nuove Tecnologie, l'Energia e lo Sviluppo Economico Sostenibile, Rome, Italy
| | - L Emmenegger
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
| | - G Forster
- National Centre for Atmospheric Science, University of East Anglia, Norwich, UK
| | - A Frumau
- Netherlands Organisation for Applied Scientific Research, Petten, The Netherlands
| | - C Gerbig
- Max Planck Institute for Biogeochemistry, Jena, Germany
| | - F Gheusi
- Laboratoire d'Aérologie, UPS Université Toulouse 3, CNRS (UMR5560), Toulouse, France
| | - S Hammer
- University of Heidelberg, Institut fuer Umweltphysik, Heidelberg, Germany
| | - L Haszpra
- Research Centre for Astronomy and Earth Sciences, Sopron, Hungary
| | - J Hatakka
- Finnish Meteorological Institute, Helsinki, Finland
| | - L Hazan
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - M Heliasz
- Centre for Environmental and Climate Research, Lund University, Lund, Sweden
| | - S Henne
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
| | - A Hensen
- Netherlands Organisation for Applied Scientific Research, Petten, The Netherlands
| | - O Hermansen
- NILU - Norwegian Institute for Air Research, Oslo, Norway
| | - P Keronen
- Institute for Atmospheric and Earth System Research (INAR), University of Helsinki, Helsinki, Finland
| | - R Kivi
- Finnish Meteorological Institute, Helsinki, Finland
| | - K Komínková
- Global Change Research Institute of the Czech Academy of Sciences, Brno, Czech Republic
| | - D Kubistin
- Deutscher Wetterdienst, Hohenpeißenberg Meteorological Observatory, Hohenpeißenberg, Germany
| | - O Laurent
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - T Laurila
- Finnish Meteorological Institute, Helsinki, Finland
| | - J V Lavric
- Max Planck Institute for Biogeochemistry, Jena, Germany
| | - I Lehner
- Centre for Environmental and Climate Research, Lund University, Lund, Sweden
| | - K E J Lehtinen
- Finnish Meteorological Institute, Helsinki, Finland.,University of Eastern Finland, Kuopio, Finland
| | - A Leskinen
- Finnish Meteorological Institute, Helsinki, Finland.,University of Eastern Finland, Kuopio, Finland
| | - M Leuenberger
- University of Bern, Physics Institute, Climate and Environmental Physics Division and Oeschger Center for Climate Change Research, Bern, Switzerland
| | - I Levin
- University of Heidelberg, Institut fuer Umweltphysik, Heidelberg, Germany
| | - M Lindauer
- Deutscher Wetterdienst, Hohenpeißenberg Meteorological Observatory, Hohenpeißenberg, Germany
| | - M Lopez
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - C Lund Myhre
- NILU - Norwegian Institute for Air Research, Oslo, Norway
| | - I Mammarella
- Institute for Atmospheric and Earth System Research (INAR), University of Helsinki, Helsinki, Finland
| | - G Manca
- European Commission, Joint Research Centre, Ispra, Italy
| | - A Manning
- National Centre for Atmospheric Science, University of East Anglia, Norwich, UK
| | - M V Marek
- Global Change Research Institute of the Czech Academy of Sciences, Brno, Czech Republic
| | - P Marklund
- Swedish University of Agricultural Sciences, Unit for Field-based Forest Research, 92291 Vindeln, Sweden
| | - D Martin
- Environmental Protection Agency, Dublin, Ireland
| | | | - N Mihalopoulos
- Environmental Chemical Processes Laboratory, University of Crete, Greece
| | - M Mölder
- Department of Physical Geography and Ecosystem Science (INES), Lund University, Lund, Sweden
| | - J A Morgui
- Institut de Ciencia i Tecnologia Ambientals, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - J Necki
- AGH University of Science and Technology, 30059 Krakow, Poland
| | - S O'Doherty
- Atmospheric Chemistry Research Group School of Chemistry, University of Bristol, Bristol, UK
| | - C O'Dowd
- National University of Ireland Galway, Galway, Ireland
| | - M Ottosson
- Swedish University of Agricultural Sciences, Unit for Field-based Forest Research, 92291 Vindeln, Sweden
| | - C Philippon
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - S Piacentino
- Agenzia Nazionale per le Nuove Tecnologie, l'Energia e lo Sviluppo Economico Sostenibile, Rome, Italy
| | - J M Pichon
- Université Clermont Auvergne, CNRS, Laboratoire de Météorologie Physique, UMR 6016, Clermont-Ferrand, France
| | - C Plass-Duelmer
- Deutscher Wetterdienst, Hohenpeißenberg Meteorological Observatory, Hohenpeißenberg, Germany
| | - A Resovsky
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - L Rivier
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - X Rodó
- Climate and Health Programme (CLIMA), Barcelona Institute for Global Health (ISGLOBAL), Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avancats (ICREA), Barcelona, Spain
| | - M K Sha
- Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
| | - H A Scheeren
- Centre for Isotope Research (CIO), University of Groningen, Nijenborgh 6, 9747 AG Groningen, The Netherlands
| | - D Sferlazzo
- Agenzia Nazionale per le Nuove Tecnologie, l'Energia e lo Sviluppo Economico Sostenibile, Rome, Italy
| | - T G Spain
- National University of Ireland Galway, Galway, Ireland
| | - K M Stanley
- Atmospheric Chemistry Research Group School of Chemistry, University of Bristol, Bristol, UK.,Institute for Atmospheric and Environmental Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - M Steinbacher
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
| | - P Trisolino
- National Research Council, Institute of Atmospheric Sciences and Climate, Bologna, Italy
| | | | - G Vítková
- Global Change Research Institute of the Czech Academy of Sciences, Brno, Czech Republic
| | - D Weyrauch
- Deutscher Wetterdienst, Hohenpeißenberg Meteorological Observatory, Hohenpeißenberg, Germany
| | - I Xueref-Remy
- Aix Marseille Univ, Avignon Université, CNRS, IRD, Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale (IMBE), Marseille, France
| | - K Yala
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - C Yver Kwok
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
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6
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Peters W, Bastos A, Ciais P, Vermeulen A. A historical, geographical and ecological perspective on the 2018 European summer drought. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190505. [PMID: 32892723 DOI: 10.1098/rstb.2019.0505] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Wouter Peters
- Department of Meteorology and Air Quality, Wageningen University, Wageningen, The Netherlands.,Centre for Isotope Research Groningen, Groningen University, Groningen, The Netherlands
| | - Ana Bastos
- Max Planck Institute for Biogeochemistry, Jena, Germany
| | - Philippe Ciais
- Laboratoire des Sciences du Climat et de l'Environnement, Gif-sur-Yvette, France
| | - Alex Vermeulen
- Integrated Carbon Observing System (ICOS ERIC), Carbon Portal, Lund, Sweden
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7
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Smith NE, Kooijmans LMJ, Koren G, van Schaik E, van der Woude AM, Wanders N, Ramonet M, Xueref-Remy I, Siebicke L, Manca G, Brümmer C, Baker IT, Haynes KD, Luijkx IT, Peters W. Spring enhancement and summer reduction in carbon uptake during the 2018 drought in northwestern Europe. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190509. [PMID: 32892721 PMCID: PMC7485100 DOI: 10.1098/rstb.2019.0509] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We analysed gross primary productivity (GPP), total ecosystem respiration (TER) and the resulting net ecosystem exchange (NEE) of carbon dioxide (CO2) by the terrestrial biosphere during the summer of 2018 through observed changes across the Integrated Carbon Observation System (ICOS) network, through biosphere and inverse modelling, and through remote sensing. Highly correlated yet independently-derived reductions in productivity from sun-induced fluorescence, vegetative near-infrared reflectance, and GPP simulated by the Simple Biosphere model version 4 (SiB4) suggest a 130–340 TgC GPP reduction in July–August–September (JAS) of 2018. This occurs over an area of 1.6 × 106 km2 with anomalously low precipitation in northwestern and central Europe. In this drought-affected area, reduced GPP, TER, NEE and soil moisture at ICOS ecosystem sites are reproduced satisfactorily by the SiB4 model. We found that, in contrast to the preceding 5 years, low soil moisture is the main stress factor across the affected area. SiB4’s NEE reduction by 57 TgC for JAS coincides with anomalously high atmospheric CO2 observations in 2018, and this is closely matched by the NEE anomaly derived by CarbonTracker Europe (52 to 83 TgC). Increased NEE during the spring (May–June) of 2018 (SiB4 −52 TgC; CTE −46 to −55 TgC) largely offset this loss, as ecosystems took advantage of favourable growth conditions. 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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Affiliation(s)
- Naomi E Smith
- Meteorology and Air Quality, Wageningen University and Research, Wageningen, The Netherlands
| | - Linda M J Kooijmans
- Meteorology and Air Quality, Wageningen University and Research, Wageningen, The Netherlands
| | - Gerbrand Koren
- Meteorology and Air Quality, Wageningen University and Research, Wageningen, The Netherlands
| | - Erik van Schaik
- Meteorology and Air Quality, Wageningen University and Research, Wageningen, The Netherlands
| | - Auke M van der Woude
- Meteorology and Air Quality, Wageningen University and Research, Wageningen, The Netherlands.,Centre for Isotope Research, University of Groningen, Groningen, The Netherlands
| | - Niko Wanders
- Department of Physical Geography, Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands
| | - Michel Ramonet
- Université Aix Marseille, Université Avignon, CNRS, IRD, Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale (IMBE), Marseille, France
| | - Irène Xueref-Remy
- Université Aix Marseille, Université Avignon, CNRS, IRD, Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale (IMBE), Marseille, France
| | - Lukas Siebicke
- University of Göttingen, Bioclimatology, Büsgenweg 2, 37077 Göttingen, Niedersachsen, Germany
| | - Giovanni Manca
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Christian Brümmer
- Thünen Institute of Climate-Smart Agriculture, Bundesallee 65, 38116 Braunschweig, Germany
| | - Ian T Baker
- Department of Atmospheric Science, Colorado State University, Fort Collins, CO, USA
| | - Katherine D Haynes
- Department of Atmospheric Science, Colorado State University, Fort Collins, CO, USA
| | - Ingrid T Luijkx
- Meteorology and Air Quality, Wageningen University and Research, Wageningen, The Netherlands
| | - Wouter Peters
- Meteorology and Air Quality, Wageningen University and Research, Wageningen, The Netherlands.,Centre for Isotope Research, University of Groningen, Groningen, The Netherlands
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8
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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 TS, 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 ES, Varlagin A, Vendrame N, Vincke C, Völksch I, Weber S, Wille C, Wizemann HD, Zeeman M, Vereecken H. Altered energy partitioning across terrestrial ecosystems in the European drought year 2018. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190524. [PMID: 32892732 DOI: 10.1098/rstb.2019.0524] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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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Affiliation(s)
- Alexander Graf
- Institute of Bio- and Geosciences: Agrosphere (IBG3), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Anne Klosterhalfen
- Institute of Bio- and Geosciences: Agrosphere (IBG3), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany.,Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Skogsmarksgränd 17, 90183 Umeå, Sweden
| | - Nicola Arriga
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Christian Bernhofer
- Chair of Meteorology, Technische Universität Dresden, Pienner Straße 23, 01737 Tharandt, Germany
| | - Heye Bogena
- Institute of Bio- and Geosciences: Agrosphere (IBG3), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Frédéric Bornet
- BioEcoAgro Joint Research Unit, INRAE, Université de Liège, Université de Lille, Université de Picardie Jules Verne, 02000 Barenton-Bugny, France
| | - Nicolas Brüggemann
- Institute of Bio- and Geosciences: Agrosphere (IBG3), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Christian Brümmer
- Institute of Climate-Smart Agriculture, Johann Heinrich von Thünen Institute, Bundesallee 65, 38116 Braunschweig, Germany
| | - Nina Buchmann
- Department of Environmental Systems Science, ETH Zurich, Universitätstraße 2, 8092 Zurich, Switzerland
| | - Jinshu Chi
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Skogsmarksgränd 17, 90183 Umeå, Sweden
| | | | - Edoardo Cremonese
- Climate Change Unit, Environmental Protection Agency of Aosta Valley, Italy
| | - Matthias Cuntz
- Unité mixte de Recherche Silva, Université de Lorraine, AgroParisTech, INRAE, UMR Silva, 54000 Nancy, France
| | - Jiří Dušek
- Department of Matter and Energy Fluxes, Global Change Research Institute of the Czech Academy of Sciences, Bělidla 986/4a, 60300 Brno, Czech Republic
| | - Tarek S El-Madany
- Department of Biogeochemical Integration, Max Planck Institute for Biogeochemistry, Hans-Knöll-Straße 10, 07745 Jena, Germany
| | - Silvano Fares
- National Research Council (NRC), Institute of Bioeconomy, Via dei Taurini 19, 00100 Rome, Italy
| | - Milan Fischer
- Department of Matter and Energy Fluxes, Global Change Research Institute of the Czech Academy of Sciences, Bělidla 986/4a, 60300 Brno, Czech Republic
| | - Lenka Foltýnová
- Department of Matter and Energy Fluxes, Global Change Research Institute of the Czech Academy of Sciences, Bělidla 986/4a, 60300 Brno, Czech Republic
| | - Mana Gharun
- Department of Environmental Systems Science, ETH Zurich, Universitätstraße 2, 8092 Zurich, Switzerland
| | - Shiva Ghiasi
- Department of Environmental Systems Science, ETH Zurich, Universitätstraße 2, 8092 Zurich, Switzerland
| | - Bert Gielen
- University of Antwerp, Plants and Ecosystems, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Pia Gottschalk
- Remote Sensing and Geoinformatics, German Research Centre for Geosciences (GFZ), Telegrafenberg, 14473 Potsdam, Germany
| | - Thomas Grünwald
- Chair of Meteorology, Technische Universität Dresden, Pienner Straße 23, 01737 Tharandt, Germany
| | - Günther Heinemann
- Environmental Meteorology, University of Trier, Behringstraße 21, 54296 Trier, Germany
| | - Bernard Heinesch
- Terra Teaching and Research Centre, University of Liege - Gembloux Agro-Bio Tech, Avenue de la Faculté, 8, 5030 Gembloux, Belgium
| | - Michal Heliasz
- Department of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, 22362 Lund, Sweden
| | - Jutta Holst
- Department of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, 22362 Lund, Sweden
| | - Lukas Hörtnagl
- Department of Environmental Systems Science, ETH Zurich, Universitätstraße 2, 8092 Zurich, Switzerland
| | - Andreas Ibrom
- Department of Environmental Engineering, Technical University of Denmark (DTU), Bygningstorvet 115, 2800 Lyngby, Denmark
| | - Joachim Ingwersen
- Institute of Soil Science and Land Evaluation, University of Hohenheim, Emil-Wolff-Straße 27, 70599 Stuttgart, Germany
| | - Gerald Jurasinski
- Department for Landscape Ecology and Site Evaluation, University of Rostock, Justus von Liebig Weg 6, 18059 Rostock, Germany
| | - Janina Klatt
- Institute of Meteorology and Climate Research - Atmospheric Environmental Research, Karlsruhe Institute of Technology, Campus Alpin, Kreuzeckbahnstraße 19, 82467 Garmisch-Partenkirchen, Germany
| | - Alexander Knohl
- Bioclimatology, University of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
| | - Franziska Koebsch
- Department for Landscape Ecology and Site Evaluation, University of Rostock, Justus von Liebig Weg 6, 18059 Rostock, Germany
| | - Jan Konopka
- Climatology and Environmental Meteorology, Institute of Geoecology, Technische Universität Braunschweig, Langer Kamp 19c, 38106 Braunschweig, Germany
| | - Mika Korkiakoski
- Climate System Research Unit, Finnish Meteorological Institute, PO Box 503, 00101 Helsinki, Finland
| | - Natalia Kowalska
- Department of Matter and Energy Fluxes, Global Change Research Institute of the Czech Academy of Sciences, Bělidla 986/4a, 60300 Brno, Czech Republic
| | - Pascal Kremer
- Institute of Soil Science and Land Evaluation, University of Hohenheim, Emil-Wolff-Straße 27, 70599 Stuttgart, Germany
| | - Bart Kruijt
- Department of Environmental Sciences, Wageningen University and Research, PO Box 47, 6700 AA Wageningen, The Netherlands
| | - Sebastien Lafont
- ISPA, Bordeaux Sciences Agro, INRAE, 33140, Villenave d'Ornon, France
| | - Joël Léonard
- BioEcoAgro Joint Research Unit, INRAE, Université de Liège, Université de Lille, Université de Picardie Jules Verne, 02000 Barenton-Bugny, France
| | - Anne De Ligne
- Terra Teaching and Research Centre, University of Liege - Gembloux Agro-Bio Tech, Avenue de la Faculté, 8, 5030 Gembloux, Belgium
| | - Bernard Longdoz
- Terra Teaching and Research Centre, University of Liege - Gembloux Agro-Bio Tech, Avenue de la Faculté, 8, 5030 Gembloux, Belgium
| | - Denis Loustau
- ISPA, Bordeaux Sciences Agro, INRAE, 33140, Villenave d'Ornon, France
| | - Vincenzo Magliulo
- CNR - Institute for Agricultural and Forest Systems, Via Patacca, 85, 80040 Ercolano (Napoli), Italy
| | - Ivan Mammarella
- Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Gustaf Hällströmin katu 2B, 00014 Helsinki, Finland
| | - Giovanni Manca
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Matthias Mauder
- Institute of Meteorology and Climate Research - Atmospheric Environmental Research, Karlsruhe Institute of Technology, Campus Alpin, Kreuzeckbahnstraße 19, 82467 Garmisch-Partenkirchen, Germany
| | - Mirco Migliavacca
- Department of Biogeochemical Integration, Max Planck Institute for Biogeochemistry, Hans-Knöll-Straße 10, 07745 Jena, Germany
| | - Meelis Mölder
- Department of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, 22362 Lund, Sweden
| | - Johan Neirynck
- Research Institute for Nature and Forest, INBO, Havenlaan 88 Box 73, 1000 Brussels, Belgium
| | - Patrizia Ney
- Institute of Bio- and Geosciences: Agrosphere (IBG3), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Mats Nilsson
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Skogsmarksgränd 17, 90183 Umeå, Sweden
| | - Eugénie Paul-Limoges
- Department of Geography, University of Zurich, Winterthurerstraße 190, 8057 Zurich, Switzerland
| | - Matthias Peichl
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Skogsmarksgränd 17, 90183 Umeå, Sweden
| | - Andrea Pitacco
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - Arne Poyda
- Institute of Soil Science and Land Evaluation, University of Hohenheim, Emil-Wolff-Straße 27, 70599 Stuttgart, Germany.,Institute of Crop Science and Plant Breeding, Grass and Forage Science/Organic Agriculture, Christian-Albrechts-University Kiel, Hermann-Rodewald-Straße 9, 24118 Kiel, Germany
| | - Corinna Rebmann
- Helmholtz Centre for Environmental Research GmbH - UFZ, Department Computational Hydrosystems, Permoserstraße 15, 04318 Leipzig, Germany
| | - Marilyn Roland
- University of Antwerp, Plants and Ecosystems, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Torsten Sachs
- Remote Sensing and Geoinformatics, German Research Centre for Geosciences (GFZ), Telegrafenberg, 14473 Potsdam, Germany
| | - Marius Schmidt
- Institute of Bio- and Geosciences: Agrosphere (IBG3), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Frederik Schrader
- Institute of Climate-Smart Agriculture, Johann Heinrich von Thünen Institute, Bundesallee 65, 38116 Braunschweig, Germany
| | - Lukas Siebicke
- Bioclimatology, University of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
| | - Ladislav Šigut
- Department of Matter and Energy Fluxes, Global Change Research Institute of the Czech Academy of Sciences, Bělidla 986/4a, 60300 Brno, Czech Republic
| | - Eeva-Stiina Tuittila
- School of Forest Sciences, University of Eastern Finland, Yliopistokatu 7, 80101 Joensuu, Finland
| | - Andrej Varlagin
- Laboratory of Biocentology, A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky pr.33, Moscow 119071, Russia
| | - Nadia Vendrame
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - Caroline Vincke
- Environmental Sciences, Earth and Life Institute, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Ingo Völksch
- Institute of Meteorology and Climate Research - Atmospheric Environmental Research, Karlsruhe Institute of Technology, Campus Alpin, Kreuzeckbahnstraße 19, 82467 Garmisch-Partenkirchen, Germany
| | - Stephan Weber
- Climatology and Environmental Meteorology, Institute of Geoecology, Technische Universität Braunschweig, Langer Kamp 19c, 38106 Braunschweig, Germany
| | - Christian Wille
- Remote Sensing and Geoinformatics, German Research Centre for Geosciences (GFZ), Telegrafenberg, 14473 Potsdam, Germany
| | - Hans-Dieter Wizemann
- Institute of Physics and Meteorology, University of Hohenheim, 70593 Stuttgart, Germany
| | - Matthias Zeeman
- Institute of Meteorology and Climate Research - Atmospheric Environmental Research, Karlsruhe Institute of Technology, Campus Alpin, Kreuzeckbahnstraße 19, 82467 Garmisch-Partenkirchen, Germany
| | - Harry Vereecken
- Institute of Bio- and Geosciences: Agrosphere (IBG3), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
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