我们发现,这些全球规模的风型出现时,主要粮食生产地同时出现热浪的风险增加了20倍。”哥伦比亚大学的地球系统研究员凯·科恩哈伯(Kai Kornhuber)说道。
Kornhuber and his team analysed climate data from 1979 to 2018 and found that when two particular wavelengths of circumglobal Rossby waves – called wave–5 and wave–7 – occurred in the Northern Hemisphere jet stream, they channel hot subtropical air into regions in North America, Europe, and Asia.
科恩哈伯和他的团队分析了1979年至2018年的气候数据,发现当环地罗斯贝波的两股特定波长波-5和波-7出现在北半球的喷流中时,会将亚热带热空气引入北美、欧洲和亚洲地区。
The hot air produces temperature spikes that can persist for weeks: extreme weather events that kill people, and threaten global food security through the widespread impact they have on crops.
热空气会产生持续数周的温度峰值。极端天气会致人死亡,并通过对庄稼造成影响而威胁全球食品安全。
【今年热浪不断,入冬不冷,科学家好像发现了原因】相关文章:
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