气候变化领域集成服务门户(CCPortal): The Madden-Julian Oscillation Affects Maize Yields Throughout the Tropics and Subtropics

CCPortal

DOI	10.1029/2020GL087004
	The Madden-Julian Oscillation Affects Maize Yields Throughout the Tropics and Subtropics
	Anderson W.B.; Han E.; Baethgen W.; Goddard L.; Muñoz Á.G.; Robertson A.W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:11
英文摘要	Understanding what causes weather-related stresses that lead to crop failures is a critical step toward stabilizing global food production. While there are many sources of weather-related stresses, the 30–60 days of Madden-Julian Oscillation (MJO) is the dominant source of subseasonal climate variability in the tropics, making it a potential—but as of yet unexplored—source of crop yield anomalies. Here crop models and observational yield statistics are used to assess whether the MJO affects maize yields. We find that the influence of the MJO is widespread; it can increase or reduce maize yields throughout the tropics. In dry, hot environments the MJO can reduce maize yields by reducing precipitation, decreasing soil moisture, and increasing extreme heat, while in wetter, cooler environments—where water stress is less common—MJO-forced decreases in rainfall bring increases in solar radiation that benefits maize yields. These results provide a pathway to develop actionable early warnings using subseasonal forecasts. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Chemical contamination; Crops; Precipitation (meteorology); Soil moisture; Tropics; Climate variability; Critical steps; Crop failures; Early warning; Food production; Hot environments; Madden-Julian oscillation; Water stress; Climatology; Madden-Julian oscillation; maize; precipitation intensity; soil moisture; solar radiation; subtropical region; tropical region; water stress; yield response; Zea mays
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170273
作者单位	The International Research Institute for Climate and Society, Palisades, NY, United States
推荐引用方式 GB/T 7714	Anderson W.B.,Han E.,Baethgen W.,et al. The Madden-Julian Oscillation Affects Maize Yields Throughout the Tropics and Subtropics[J],2020,47(11).
APA	Anderson W.B.,Han E.,Baethgen W.,Goddard L.,Muñoz Á.G.,&Robertson A.W..(2020).The Madden-Julian Oscillation Affects Maize Yields Throughout the Tropics and Subtropics.Geophysical Research Letters,47(11).
MLA	Anderson W.B.,et al."The Madden-Julian Oscillation Affects Maize Yields Throughout the Tropics and Subtropics".Geophysical Research Letters 47.11(2020).