No trends in spring and autumn phenology during the global warming hiatus

No trends in spring and autumn phenology during the global warming hiatus
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全球变暖中断期间春季和秋季物候没有趋势

DOI:
10.1038/s41467-019-10235-8
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发表时间:
2019-06
影响因子:
16.6
通讯作者:
Jassal Rachhpal S
Jassal Rachhpal S
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Wang Xufeng;Xiao Jingfeng;Li Xin;Cheng Guodong;Ma Mingguo;Zhu Gaofeng;Arain M Altaf;Black T Andrew;Jassal Rachhpal S

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物候在调节光合作用、蒸散和地表能量通量方面起着重要作用,对气候变化十分敏感。全球平均地表气温数据表明,1998年至2012年期间全球变暖中断,但其对全球物候的影响仍不清楚。在这里,我们使用长期的卫星和FLUXNET记录,以检查在北方半球的气候变化趋势之前和期间的变暖间隙。基于卫星记录的结果表明,在气候变暖的间歇期,物候变化速率减缓。长期FLUXNET测量的分析,主要是在变暖的间隙,表明没有广泛的提前(或延迟)的趋势,在春季(或秋季)物候。普遍的物候趋势的缺乏部分导致了春季和秋季碳通量的普遍趋势的缺乏。我们的研究结果对于理解物候对气候变化的响应和气候-碳反馈具有重要意义。
Phenology plays a fundamental role in regulating photosynthesis, evapotranspiration, and surface energy fluxes and is sensitive to climate change. The global mean surface air temperature data indicate a global warming hiatus between 1998 and 2012, while its impacts on global phenology remains unclear. Here we use long-term satellite and FLUXNET records to examine phenology trends in the northern hemisphere before and during the warming hiatus. Our results based on the satellite record show that the phenology change rate slowed down during the warming hiatus. The analysis of the long-term FLUXNET measurements, mainly within the warming hiatus, shows that there were no widespread advancing (or delaying) trends in spring (or autumn) phenology. The lack of widespread phenology trends partly led to the lack of widespread trends in spring and autumn carbon fluxes. Our findings have significant implications for understanding the responses of phenology to climate change and the climate-carbon feedbacks.
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