Contrasting carbon cycle responses of the tropical continents to the 2015-2016 El Nino

被引：343

作者：

Liu, Junjie ^{[1
]}

Bowman, Kevin W. ^{[1
]}

Schimel, David S. ^{[1
]}

Parazoo, Nicolas C. ^{[1
]}

Jiang, Zhe ^{[2
]}

Lee, Meemong ^{[1
]}

Bloom, A. Anthony ^{[1
]}

Wunch, Debra ^{[3
]}

Frankenberg, Christian ^{[1
,4
]}

Sun, Ying ^{[1
,7
]}

O'Dell, Christopher W. ^{[5
]}

Gurney, Kevin R. ^{[6
]}

Menemenlis, Dimitris ^{[1
]}

Gierach, Michelle ^{[1
]}

Crisp, David ^{[1
]}

Eldering, Annmarie ^{[1
]}

机构：

[1] CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA

[2] Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA

[3] Univ Toronto, Toronto, ON, Canada

[4] CALTECH, Pasadena, CA 91125 USA

[5] Colorado State Univ, Ft Collins, CO 80523 USA

[6] Arizona State Univ, Tempe, AZ USA

[7] Cornell Univ, Sch Integrat Plant Sci, Soil & Crop Sci Sect, Ithaca, NY USA

来源：

SCIENCE | 2017年 / 358卷 / 6360期

关键词：

CLIMATE EXTREMES; DROUGHT; CO2; FOREST; SENSITIVITY; ECOSYSTEMS; EVOLUTION; BALANCE; FLUXES; VARIABILITY;

D O I：

10.1126/science.aam5690

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The 2015-2016 El Nino led to historically high temperatures and low precipitation over the tropics, while the growth rate of atmospheric carbon dioxide (CO2) was the largest on record. Here we quantify the response of tropical net biosphere exchange, gross primary production, biomass burning, and respiration to these climate anomalies by assimilating column CO2, solar-induced chlorophyll fluorescence, and carbon monoxide observations from multiple satellites. Relative to the 2011 La Nina, the pantropical biosphere released 2.5 +/- 0.34 gigatons more carbon into the atmosphere in 2015, consisting of approximately even contributions from three tropical continents but dominated by diverse carbon exchange processes. The heterogeneity of the carbon-exchange processes indicated here challenges previous studies that suggested that a single dominant process determines carbon cycle interannual variability.

引用

页数：7

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