Murakami Hiroyuki
National Oceanic and Atmospheric Administration/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, USA.
University Corporation for Atmospheric Research, Boulder, CO, USA.
Sci Adv. 2022 May 13;8(19):eabn9493. doi: 10.1126/sciadv.abn9493. Epub 2022 May 11.
Over the past 40 years, anthropogenic aerosols have been substantially decreasing over Europe and the United States owing to pollution control measures, whereas they have increased in South and East Asia because of the economic and industrial growth in these regions. However, it is not yet clear how the changes in anthropogenic aerosols have altered global tropical cyclone (TC) activity. In this study, we reveal that the decreases in aerosols over Europe and the United States have contributed to significant decreases in TCs over the Southern Hemisphere as well as increases in TCs over the North Atlantic, whereas the increases in aerosols in South and East Asia have exerted substantial decreases in TCs over the western North Pacific. These results suggest that how society controls future emissions of anthropogenic aerosols will exert a substantial impact on the world's TC activity.
在过去40年里，由于污染控制措施，人为气溶胶在欧洲和美国大幅减少，而在南亚和东亚，由于这些地区的经济和工业增长，人为气溶胶有所增加。然而，人为气溶胶的变化如何改变全球热带气旋（TC）活动尚不清楚。在这项研究中，我们发现欧洲和美国气溶胶的减少导致南半球热带气旋显著减少以及北大西洋热带气旋增加，而南亚和东亚气溶胶的增加使西北太平洋西部的热带气旋大幅减少。这些结果表明，社会如何控制未来人为气溶胶的排放将对全球热带气旋活动产生重大影响。
