Impact of the 2015/2016 El Niño on the terrestrial carbon cycle constrained by bottom-up and top-down approaches.
Impact of the 2015/2016 El Niño on the terrestrial carbon cycle constrained by bottom-up and top-down approaches.
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DOI：
10.1098/rstb.2017.0304
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发表时间：
2018-10-08
期刊：
影响因子：
--
通讯作者：
Zhu D
中科院分区：
文献类型：
--
作者：
Bastos A;Friedlingstein P;Sitch S;Chen C;Mialon A;Wigneron JP;Arora VK;Briggs PR;Canadell JG;Ciais P;Chevallier F;Cheng L;Delire C;Haverd V;Jain AK;Joos F;Kato E;Lienert S;Lombardozzi D;Melton JR;Myneni R;Nabel JEMS;Pongratz J;Poulter B;Rödenbeck C;Séférian R;Tian H;van Eck C;Viovy N;Vuichard N;Walker AP;Wiltshire A;Yang J;Zaehle S;Zeng N;Zhu D
通过评估陆地碳汇对厄尔尼诺现象造成的温度和干旱异常的反应，可以深入了解当今的碳循环及其由气候驱动的变异性。这也是建立对陆地生态系统模型对许多大陆，特别是热带地区未来预期的变暖和干旱压力的反应的信心的一个必要步骤。在这里，我们深入分析了陆地碳循环对2015/2016年厄尔尼诺现象的响应，厄尔尼诺现象给热带地区和其他敏感地区带来了极端变暖和干燥的条件。首先，我们提供了一个合成的时空演变的异常净陆地-大气CO2通量估计的两个原位测量的基础上大气逆温和16陆面模型（LSMs）从TRENDYv 6。模拟生态系统生产力，分解率和火灾排放的变化也进行了研究。逆温和LSM普遍同意陆地碳汇的减少和随后的恢复，以应对厄尔尼诺条件的开始，高峰和消亡，并指出陆地碳汇的强度下降：在2015/2016年期间，0.4-0.7 PgC yr−1（逆温）和1.0 PgC yr−1（LSM）。LSM模拟表明，生产力下降，而不是呼吸增加，占主导地位的净生物群落生产力异常响应ENSO整个热带地区，主要与长期干旱条件。这篇文章是讨论会议议题“2015/2016厄尔尼诺对陆地热带碳循环的影响：模式，机制和含义”的一部分。
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 CO2 fluxes estimated by two in situ 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−1 (inversions) and by 1.0 PgC yr−1 (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 Niño on the terrestrial tropical carbon cycle: patterns, mechanisms and implications’.
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水文弹性和亚马逊生产力。
影响因子：
16.6
作者：
Ahlström A;Canadell JG;Schurgers G;Wu M;Berry JA;Guan K;Jackson RB
通讯作者：
Jackson RB
影响因子：
56.9
作者：
Chatterjee, A.;Gierach, M. M.;Schimel, D. S.
通讯作者：
Schimel, D. S.
影响因子：
16.6
作者：
Cheng L;Zhang L;Wang YP;Canadell JG;Chiew FHS;Beringer J;Li L;Miralles DG;Piao S;Zhang Y
通讯作者：
Zhang Y
DOI：
10.1002/joc.3711
发表时间：
2014-03-15
期刊：
INTERNATIONAL JOURNAL OF CLIMATOLOGY
影响因子：
--
作者：
Harris, I.;Jones, P. D.;Lister, D. H.
通讯作者：
Lister, D. H.
影响因子：
4.4
作者：
Chevallier, Frederic;Broquet, Gregoire;Crisp, David
通讯作者：
Crisp, David