Interannual variation in methane emissions from tropical wetlands triggered by repeated El Niño Southern Oscillation

Interannual variation in methane emissions from tropical wetlands triggered by repeated El Niño Southern Oscillation

© 2017 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 23(2017), 11 vom: 15. Nov., Seite 4706-4716
1. Verfasser: Zhu, Qiuan (VerfasserIn)
Weitere Verfasser: Peng, Changhui, Ciais, Philippe, Jiang, Hong, Liu, Jinxun, Bousquet, Philippe, Li, Shiqin, Chang, Jie, Fang, Xiuqin, Zhou, Xiaolu, Chen, Huai, Liu, Shirong, Lin, Guanghui, Gong, Peng, Wang, Meng, Wang, Han, Xiang, Wenhua, Chen, Jing
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article El Niño-Southern Oscillation atmospheric methane methane emission tropical wetlands Greenhouse Gases Methane OP0UW79H66
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520 |a Methane (CH4 ) emissions from tropical wetlands contribute 60%-80% of global natural wetland CH4 emissions. Decreased wetland CH4 emissions can act as a negative feedback mechanism for future climate warming and vice versa. The impact of the El Niño-Southern Oscillation (ENSO) on CH4 emissions from wetlands remains poorly quantified at both regional and global scales, and El Niño events are expected to become more severe based on climate models' projections. We use a process-based model of global wetland CH4 emissions to investigate the impacts of the ENSO on CH4 emissions in tropical wetlands for the period from 1950 to 2012. The results show that CH4 emissions from tropical wetlands respond strongly to repeated ENSO events, with negative anomalies occurring during El Niño periods and with positive anomalies occurring during La Niña periods. An approximately 8-month time lag was detected between tropical wetland CH4 emissions and ENSO events, which was caused by the combined time lag effects of ENSO events on precipitation and temperature over tropical wetlands. The ENSO can explain 49% of interannual variations for tropical wetland CH4 emissions. Furthermore, relative to neutral years, changes in temperature have much stronger effects on tropical wetland CH4 emissions than the changes in precipitation during ENSO periods. The occurrence of several El Niño events contributed to a lower decadal mean growth rate in atmospheric CH4 concentrations throughout the 1980s and 1990s and to stable atmospheric CH4 concentrations from 1999 to 2006, resulting in negative feedback to global warming 
650 4 |a Journal Article 
650 4 |a El Niño-Southern Oscillation 
650 4 |a atmospheric methane 
650 4 |a methane emission 
650 4 |a tropical wetlands 
650 7 |a Greenhouse Gases  |2 NLM 
650 7 |a Methane  |2 NLM 
650 7 |a OP0UW79H66  |2 NLM 
700 1 |a Peng, Changhui  |e verfasserin  |4 aut 
700 1 |a Ciais, Philippe  |e verfasserin  |4 aut 
700 1 |a Jiang, Hong  |e verfasserin  |4 aut 
700 1 |a Liu, Jinxun  |e verfasserin  |4 aut 
700 1 |a Bousquet, Philippe  |e verfasserin  |4 aut 
700 1 |a Li, Shiqin  |e verfasserin  |4 aut 
700 1 |a Chang, Jie  |e verfasserin  |4 aut 
700 1 |a Fang, Xiuqin  |e verfasserin  |4 aut 
700 1 |a Zhou, Xiaolu  |e verfasserin  |4 aut 
700 1 |a Chen, Huai  |e verfasserin  |4 aut 
700 1 |a Liu, Shirong  |e verfasserin  |4 aut 
700 1 |a Lin, Guanghui  |e verfasserin  |4 aut 
700 1 |a Gong, Peng  |e verfasserin  |4 aut 
700 1 |a Wang, Meng  |e verfasserin  |4 aut 
700 1 |a Wang, Han  |e verfasserin  |4 aut 
700 1 |a Xiang, Wenhua  |e verfasserin  |4 aut 
700 1 |a Chen, Jing  |e verfasserin  |4 aut 
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773 1 8 |g volume:23  |g year:2017  |g number:11  |g day:15  |g month:11  |g pages:4706-4716 
856 4 0 |u http://dx.doi.org/10.1111/gcb.13726  |3 Volltext 
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