此外,与2023年大西洋多年代际涛动(AMO)相关的多年代际变率也为全球平均表面温度变化的激发提供了重要的变暖背景。因此,如果排除自然变化(包括厄尔尼诺和大西洋多年代际涛动等),仅考虑全球变暖趋势,预计2023年全球平均表面温度变化为1.15±0.07°C,仅增加0.02°C。
据介绍,2023年,地球大部分地区经历了自1850年以来最温暖的北方夏季和秋季。2023年是否会成为全球最暖的一年?全球变暖幅度如此之大的原因是什么?成为科学界最热门的话题,与人类社会的未来发展密切相关。
附:英文原文
Title: El Nino and AMO are kindling the astonishingly large margin warming of GMST in 2023
Author: Kexin Li, Fei Zheng, Jiang Zhu, ZENG Qing-cun
Issue&Volume: 2023-12-29
Abstract: In 2023, the majority of the earth has witnessed the warmest boreal summer and autumn since 1850. Whether 2023 will be the warmest year and what causes the astonishingly large margin of warming become the hottest topics in scientific community and are closely connected to the future development of human society. This report analyzed the monthly varying global mean surface temperature (GMST) in 2023 and found that the globe, the land, and the ocean in 2023 all exhibit extraordinary warming, which is distinct from any previous year in recorded history. Based on the GMST statistical ensemble prediction model developed at the Institute of Atmospheric Physics, the GMST in 2023 is predicted to be 1.41 ± 0.07 °C, which will certainly surpass that in 2016 as the warmest year since 1850 and is approaching to the 1.5 °C global warming threshold. Compared to 2022, the GMST in 2023 will increase 0.24 °C, with the 88% increment contributed by the annual variability as mostly affected by El Nino. Moreover, the multidecadal variability related to Atlantic Multidecadal Oscillation (AMO) in 2023 also provides an important warming background for kindling the GMST. As a result, the GMST in 2023 is expected to be 1.15 ± 0.07 °C with only 0.02 °C increment, if the effects of natural variability, including El Nino and AMO, are eliminated and only the global warming trend is considered.
DOI: 10.1007/s00376-023-3371-4
Source: http://www.iapjournals.ac.cn/aas/en/article/doi/10.1007/s00376-023-3371-4viewType=HTML
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