Recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation.
Recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation.
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DOI：
10.1038/s41467-023-36727-2
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发表时间：
2023-02-21
影响因子：
16.6
通讯作者：
Brandt, Martin
中科院分区：
文献类型：
--
作者：
Zhang, Wenmin;Schurgers, Guy;Penuelas, Josep;Fensholt, Rasmus;Yang, Hui;Tang, Jing;Tong, Xiaowei;Ciais, Philippe;Brandt, Martin
大气CO2增长率(CGR)的变率在很大程度上受热带温度波动的控制。自1960年以来，CGR对热带温度的敏感度显著增加，但在这里我们发现这一趋势已经停止。这里，我们使用毛纳罗亚和南极的长期二氧化碳记录来计算CGR，结果显示，从1960-1979到1979-2000，CGR增加了200%，但从1980-2001到2001-2020，又减少了117%，几乎回到了20世纪60年代的水平。的变化与降水量在二十年尺度上的变化显著相关。动态植被模型的结果进一步证实了这些发现，这些结果共同表明，降水的增加控制了近几十年来降水的减少。我们的结果表明，较潮湿的条件导致了热带温度变化对碳循环的影响的去耦合。作者们展示了最近热带温度变化和由热带较潮湿条件驱动的碳循环的脱钩。
The atmospheric CO2 growth rate (CGR) variability is largely controlled by tropical temperature fluctuations. The sensitivity of CGR to tropical temperature has strongly increased since 1960, but here we show that this trend has ceased. Here, we use the long-term CO2 records from Mauna Loa and the South Pole to compute CGR, and show that increased by 200% from 1960–1979 to 1979–2000 but then decreased by 117% from 1980–2001 to 2001–2020, almost returning back to the level of the 1960s. Variations in are significantly correlated with changes in precipitation at a bi-decadal scale. These findings are further corroborated by results from a dynamic vegetation model, collectively suggesting that increases in precipitation control the decreased during recent decades. Our results indicate that wetter conditions have led to a decoupling of the impact of the tropical temperature variation on the carbon cycle. The authors show a recent decoupling of the tropical temperature variations and the carbon cycle that is driven by wetter conditions in the tropics.
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影响因子：
64.8
作者：
Green, Julia K.;Seneviratne, Sonia I.;Gentine, Pierre
通讯作者：
Gentine, Pierre
影响因子：
16.6
作者：
Luo X;Keenan TF
通讯作者：
Keenan TF
影响因子：
16.6
作者：
Aragão LEOC;Anderson LO;Fonseca MG;Rosan TM;Vedovato LB;Wagner FH;Silva CVJ;Silva Junior CHL;Arai E;Aguiar AP;Barlow J;Berenguer E;Deeter MN;Domingues LG;Gatti L;Gloor M;Malhi Y;Marengo JA;Miller JB;Phillips OL;Saatchi S
通讯作者：
Saatchi S
影响因子：
2.7
作者：
DURBIN, J;WATSON, GS
通讯作者：
WATSON, GS
影响因子：
11.4
作者：
Humphrey, Vincent;Gudmundsson, Lukas
通讯作者：
Gudmundsson, Lukas