Increased control of vegetation on global terrestrial energy fluxes

Giovanni Forzieri; Diego G. Miralles; Philippe Ciais; Ramdane Alkama; Youngryel Ryu; Gregory Duveiller; Ke Zhang; Eddy Robertson; Markus Kautz; Brecht Martens; Chongya Jiang; Almut Arneth; Goran Georgievski; Wei Li; Guido Ceccherini; Peter Anthoni; Peter Lawrence; Andy Wiltshire; Julia Pongratz; Shilong Piao; Stephen Sitch; Daniel S. Goll; Vivek K. Arora; Sebastian Lienert; Danica Lombardozzi; Etsushi Kato; Julia E.M.S. Nabel; Hanqin Tian; Pierre Friedlingstein; Alessandro Cescatti

doi:10.1038/s41558-020-0717-0

Increased control of vegetation on global terrestrial energy fluxes

Giovanni Forzieri
, Diego G. Miralles
, Philippe Ciais
, Ramdane Alkama
, Youngryel Ryu
, Gregory Duveiller
, Ke Zhang
, Eddy Robertson
, Markus Kautz
, Brecht Martens
, Chongya Jiang
, Almut Arneth
, Goran Georgievski
, Wei Li
, Guido Ceccherini
, Peter Anthoni
, Peter Lawrence
, Andy Wiltshire
, Julia Pongratz
, Shilong Piao

Stephen Sitch, Daniel S. Goll, Vivek K. Arora, Sebastian Lienert, Danica Lombardozzi, Etsushi Kato, Julia E.M.S. Nabel, Hanqin Tian, Pierre Friedlingstein, Alessandro Cescatti

European Commission Joint Research Centre
Ghent University
CEA/UVSQ/CNRS
Department of Landscape Architecture and Rural Systems Engineering
Hohai University
Now at Met Office Hadley Centre
Forest Research Institute Baden-Württemberg
Institute of Meteorology and Climate Research
Helmholtz-Zentrum Hereon GmbH
Helmholtz Centre for Polar and Marine Sciences
Tsinghua University
National Center for Atmospheric Research
Universität München
Max Planck Institute for Meteorology
Tsinghua University
University of Exeter
University of Augsburg
University of Victoria
University of Bern
Institute of Applied Energy (IAE)
Auburn University

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

Changes in vegetation structure are expected to influence the redistribution of heat and moisture; however, how variations in the leaf area index (LAI) affect this global energy partitioning is not yet quantified. Here, we estimate that a unit change in LAI leads to 3.66 ± 0.45 and −3.26 ± 0.41 W m⁻² in latent (LE) and sensible (H) fluxes, respectively, over the 1982–2016 period. Analysis of an ensemble of data-driven products shows that these sensitivities increase by about 20% over the observational period, prominently in regions with a limited water supply, probably because of an increased transpiration/evaporation ratio. Global greening has caused a decrease in the Bowen ratio (B = H/LE) of −0.010 ± 0.002 per decade, which is attributable to the increased evaporative surface. Such a direct LAI effect on energy fluxes is largely modulated by plant functional types (PFTs) and background climate conditions. Land surface models (LSMs) misrepresent this vegetation control, possibly due to underestimation of the biophysical responses to changes in the water availability and poor representation of LAI dynamics.

langue originale	Anglais
Pages (de - à)	356-362
Nombre de pages	7
journal	Nature Climate Change
Volume	10
Numéro de publication	4
Les DOIs	https://doi.org/10.1038/s41558-020-0717-0
état	Publié - 1 avr. 2020
Modification externe	Oui

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Forzieri, G., Miralles, D. G., Ciais, P., Alkama, R., Ryu, Y., Duveiller, G., Zhang, K., Robertson, E., Kautz, M., Martens, B., Jiang, C., Arneth, A., Georgievski, G., Li, W., Ceccherini, G., Anthoni, P., Lawrence, P., Wiltshire, A., Pongratz, J., ... Cescatti, A. (2020). Increased control of vegetation on global terrestrial energy fluxes. Nature Climate Change, 10(4), 356-362. https://doi.org/10.1038/s41558-020-0717-0

@article{792b8e7c53654f0c9ff7c5354a4e9c0b,

title = "Increased control of vegetation on global terrestrial energy fluxes",

abstract = "Changes in vegetation structure are expected to influence the redistribution of heat and moisture; however, how variations in the leaf area index (LAI) affect this global energy partitioning is not yet quantified. Here, we estimate that a unit change in LAI leads to 3.66 ± 0.45 and −3.26 ± 0.41 W m−2 in latent (LE) and sensible (H) fluxes, respectively, over the 1982–2016 period. Analysis of an ensemble of data-driven products shows that these sensitivities increase by about 20\% over the observational period, prominently in regions with a limited water supply, probably because of an increased transpiration/evaporation ratio. Global greening has caused a decrease in the Bowen ratio (B = H/LE) of −0.010 ± 0.002 per decade, which is attributable to the increased evaporative surface. Such a direct LAI effect on energy fluxes is largely modulated by plant functional types (PFTs) and background climate conditions. Land surface models (LSMs) misrepresent this vegetation control, possibly due to underestimation of the biophysical responses to changes in the water availability and poor representation of LAI dynamics.",

author = "Giovanni Forzieri and Miralles, \{Diego G.\} and Philippe Ciais and Ramdane Alkama and Youngryel Ryu and Gregory Duveiller and Ke Zhang and Eddy Robertson and Markus Kautz and Brecht Martens and Chongya Jiang and Almut Arneth and Goran Georgievski and Wei Li and Guido Ceccherini and Peter Anthoni and Peter Lawrence and Andy Wiltshire and Julia Pongratz and Shilong Piao and Stephen Sitch and Goll, \{Daniel S.\} and Arora, \{Vivek K.\} and Sebastian Lienert and Danica Lombardozzi and Etsushi Kato and Nabel, \{Julia E.M.S.\} and Hanqin Tian and Pierre Friedlingstein and Alessandro Cescatti",

note = "Publisher Copyright: {\textcopyright} 2020, Crown/European Union.",

year = "2020",

month = apr,

day = "1",

doi = "10.1038/s41558-020-0717-0",

language = "English",

volume = "10",

pages = "356--362",

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Forzieri, G, Miralles, DG, Ciais, P, Alkama, R, Ryu, Y, Duveiller, G, Zhang, K, Robertson, E, Kautz, M, Martens, B, Jiang, C, Arneth, A, Georgievski, G, Li, W, Ceccherini, G, Anthoni, P, Lawrence, P, Wiltshire, A, Pongratz, J, Piao, S, Sitch, S, Goll, DS, Arora, VK, Lienert, S, Lombardozzi, D, Kato, E, Nabel, JEMS, Tian, H, Friedlingstein, P & Cescatti, A 2020, 'Increased control of vegetation on global terrestrial energy fluxes', Nature Climate Change, VOL. 10, Numéro 4, p. 356-362. https://doi.org/10.1038/s41558-020-0717-0

TY - JOUR

T1 - Increased control of vegetation on global terrestrial energy fluxes

AU - Forzieri, Giovanni

AU - Miralles, Diego G.

AU - Ciais, Philippe

AU - Alkama, Ramdane

AU - Ryu, Youngryel

AU - Duveiller, Gregory

AU - Zhang, Ke

AU - Robertson, Eddy

AU - Kautz, Markus

AU - Martens, Brecht

AU - Jiang, Chongya

AU - Arneth, Almut

AU - Georgievski, Goran

AU - Li, Wei

AU - Ceccherini, Guido

AU - Anthoni, Peter

AU - Lawrence, Peter

AU - Wiltshire, Andy

AU - Pongratz, Julia

AU - Piao, Shilong

AU - Sitch, Stephen

AU - Goll, Daniel S.

AU - Arora, Vivek K.

AU - Lienert, Sebastian

AU - Lombardozzi, Danica

AU - Kato, Etsushi

AU - Nabel, Julia E.M.S.

AU - Tian, Hanqin

AU - Friedlingstein, Pierre

AU - Cescatti, Alessandro

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Changes in vegetation structure are expected to influence the redistribution of heat and moisture; however, how variations in the leaf area index (LAI) affect this global energy partitioning is not yet quantified. Here, we estimate that a unit change in LAI leads to 3.66 ± 0.45 and −3.26 ± 0.41 W m−2 in latent (LE) and sensible (H) fluxes, respectively, over the 1982–2016 period. Analysis of an ensemble of data-driven products shows that these sensitivities increase by about 20% over the observational period, prominently in regions with a limited water supply, probably because of an increased transpiration/evaporation ratio. Global greening has caused a decrease in the Bowen ratio (B = H/LE) of −0.010 ± 0.002 per decade, which is attributable to the increased evaporative surface. Such a direct LAI effect on energy fluxes is largely modulated by plant functional types (PFTs) and background climate conditions. Land surface models (LSMs) misrepresent this vegetation control, possibly due to underestimation of the biophysical responses to changes in the water availability and poor representation of LAI dynamics.

AB - Changes in vegetation structure are expected to influence the redistribution of heat and moisture; however, how variations in the leaf area index (LAI) affect this global energy partitioning is not yet quantified. Here, we estimate that a unit change in LAI leads to 3.66 ± 0.45 and −3.26 ± 0.41 W m−2 in latent (LE) and sensible (H) fluxes, respectively, over the 1982–2016 period. Analysis of an ensemble of data-driven products shows that these sensitivities increase by about 20% over the observational period, prominently in regions with a limited water supply, probably because of an increased transpiration/evaporation ratio. Global greening has caused a decrease in the Bowen ratio (B = H/LE) of −0.010 ± 0.002 per decade, which is attributable to the increased evaporative surface. Such a direct LAI effect on energy fluxes is largely modulated by plant functional types (PFTs) and background climate conditions. Land surface models (LSMs) misrepresent this vegetation control, possibly due to underestimation of the biophysical responses to changes in the water availability and poor representation of LAI dynamics.

UR - https://www.scopus.com/pages/publications/85082695973

U2 - 10.1038/s41558-020-0717-0

DO - 10.1038/s41558-020-0717-0

M3 - Article

AN - SCOPUS:85082695973

SN - 1758-678X

VL - 10

SP - 356

EP - 362

JO - Nature Climate Change

JF - Nature Climate Change

IS - 4

ER -

Increased control of vegetation on global terrestrial energy fluxes

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