气候变化领域集成服务门户(CCPortal): MJO teleconnections to crop growing seasons

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DOI	10.1007/s00382-019-05109-0
	MJO teleconnections to crop growing seasons
	Anderson W.; Muñoz Á.G.; Goddard L.; Baethgen W.; Chourio X.
发表日期	2020
ISSN	0930-7575
起始页码	2203
结束页码	2219
卷号	54
英文摘要	While many Madden–Julian Oscillation (MJO) teleconnections are well documented, the significance of these teleconnections to agriculture is not well understood. Here we analyze how the MJO affects the climate during crop flowering seasons, when crops are particularly vulnerable to abiotic stress. Because the MJO is located in the tropics of the summer hemisphere and maize is a tropical, summer-grown crop, the MJO teleconnections to maize flowering seasons are stronger and more coherent than those to wheat, which tends to be grown in midlatitudes and flowers during the spring. The MJO significantly affects not only daily average precipitation and soil moisture, but also the probability of extreme precipitation, soil moisture and maximum temperatures during crop flowering seasons. The average influence on the probability of extreme daily precipitation, soil moisture, and maximum temperature events is roughly equal. On average the MJO modifies the probability of a 5th or 95th, 10th or 90th, and 25th or 75th percentile event by ∼ 2.5%, ∼ 4% and ∼ 7%, respectively. This means that an exceptionally dry (10th percentile) soil moisture value, for example, would become ∼ 40% more common (happening 14% of the time) during certain MJO phases. That the MJO can simultaneously dry soils and raise maximum air temperatures may be particularly damaging to crops because without available soil water during times of heat stress, plants are unable to transpire to cool leaf-level temperatures as a means of avoiding long-term damage. As a result, even though teleconnections from the MJO last only a few days to a week, they likely affect crop growth. © 2020, The Author(s).
语种	英语
scopus关键词	climate effect; crop production; extreme event; flowering; growing season; high temperature; Madden-Julian oscillation; maize; soil moisture; teleconnection; Triticum aestivum; Zea mays
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145604
作者单位	International Research Institute for Climate and Society, Palisades, NY, United States
推荐引用方式 GB/T 7714	Anderson W.,Muñoz Á.G.,Goddard L.,et al. MJO teleconnections to crop growing seasons[J],2020,54.
APA	Anderson W.,Muñoz Á.G.,Goddard L.,Baethgen W.,&Chourio X..(2020).MJO teleconnections to crop growing seasons.Climate Dynamics,54.
MLA	Anderson W.,et al."MJO teleconnections to crop growing seasons".Climate Dynamics 54(2020).