10.6084/m9.figshare.7029398.v1
Ana Bastos
Ana
Bastos
Pierre Friedlingstein
Pierre
Friedlingstein
Stephen Sitch
Stephen
Sitch
Chi Chen
Chi
Chen
Arnaud Mialon
Arnaud
Mialon
Jean-Pierre Wigneron
Jean-Pierre
Wigneron
Vivek K. Arora
Vivek K.
Arora
Peter R. Briggs
Peter R.
Briggs
Josep G. Canadell
Josep G.
Canadell
Philippe Ciais
Philippe
Ciais
Frédéric Chevallier
Frédéric
Chevallier
Lei Cheng
Lei
Cheng
Christine Delire
Christine
Delire
Vanessa Haverd
Vanessa
Haverd
Atul K. Jain
Atul K.
Jain
Fortunat Joos
Fortunat
Joos
Etsushi Kato
Etsushi
Kato
Sebastian Lienert
Sebastian
Lienert
Danica Lombardozzi
Danica
Lombardozzi
Joe R. Melton
Joe R.
Melton
Ranga Myneni
Ranga
Myneni
Julia E. M. S. Nabel
Julia E. M. S.
Nabel
Julia Pongratz
Julia
Pongratz
Benjamin Poulter
Benjamin
Poulter
Christian Rödenbeck
Christian
Rödenbeck
Roland Séférian
Roland
Séférian
Hanqin Tian
Hanqin
Tian
Christel van Eck
Christel
van Eck
Nicolas Viovy
Nicolas
Viovy
Nicolas Vuichard
Nicolas
Vuichard
Anthony P. Walker
Anthony P.
Walker
Andy Wiltshire
Andy
Wiltshire
Jia Yang
Jia
Yang
Sönke Zaehle
Sönke
Zaehle
Ning Zeng
Ning
Zeng
Dan Zhu
Dan
Zhu
Supplementary Figures from Impact of the 2015–2016 El Nino on the terrestrial carbon cycle constrained by bottom-up and top-down approaches
The Royal Society
2018
carbon cycle
El-Niño/Southern Oscillation
land-surface models
atmospheric inversions
2018-08-30 16:51:47
Dataset
https://rs.figshare.com/articles/dataset/Supplementary_Figures_from_Impact_of_the_2015_2016_El_Nino_on_the_terrestrial_carbon_cycle_constrained_by_bottom-up_and_top-down_approaches/7029398
Evaluating the response of the land carbon sink to the anomalies in temperature and drought imposed by El-Niño events provides insights into the present-day carbon cycle and its climate-driven variability. It is also a necessary step to build confidence in terrestrial ecosystems models' response to the warming and drying stresses expected in the future over many continents, and particularly in the tropics. Here we present an in-depth analysis of the response of the terrestrial carbon cycle to the 2015/2016 El-Niño that imposed extreme warming and dry conditions in the tropics and other sensitive regions. First, we provide a synthesis of the spatio-temporal evolution of anomalies in net land-atmosphere CO<sub>2</sub> fluxes estimated by two <i>in situ</i> measurements based on atmospheric inversions and 16 land-surface models (LSMs) from TRENDYv6. Simulated changes in ecosystem productivity, decomposition rates and fire emissions are also investigated. Inversions and LSMs generally agree on the decrease and subsequent recovery of the land sink in response to the onset, peak and demise of El-Niño conditions and point to the decreased strength of the land carbon sink: by 0.4–0.7 PgC yr<sup>−1</sup> (inversions) and by 1.0 PgC yr<sup>−1</sup> (LSMs) during 2015/2016. LSM simulations indicate that a decrease in productivity, rather than increase in respiration, dominated the net biome productivity anomalies in response to ENSO throughout the tropics, mainly associated with prolonged drought conditions.This article is part of a discussion meeting issue ‘The impact of the 2015/2016 El Nino on the terrestrial tropical carbon cycle: patterns, mechanisms and implications’.