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What is the primary cause of the observed widespread increases in precipitation intensity
| 题名： | What is the primary cause of the observed widespread increases in precipitation intensity |
| 正文语种： | 中文 |
| 作者： | Run Liu Shaw C.Liu Ralph J.Cicerone C.J.Shiu Jun Li Jingli Wang Yuanhang Zhang |
| 作者单位： | State Key Joint Laboratory of Environmental Simulation and Pollution ontrol, ollege of Environmental Sciences and Engineering, Peking University, Beijing 100871 Research enter for Environmental hanges, cademia Sinica, Taipei 11529; epartment of tmospheric Science, National entral University, Jhongli 32001 National cademy of Sciences, Washington 0001, US and also at Earth System Science, University of alifornia, Irvine Research enter for Environmental hanges, cademia Sinica, Taipei 11529 4 Institute of Urban Meteorology of hina Meteorological dministration, Beijing 100089 5 |
| 关键词： | Extreme precipitation global warming aerosols risk of floods and droughts |
| 摘要： | Significant increases in precipitation intensity, as a result of increases of heavy precipitation and/or decreases of light precipitation have been observed over widespread regions of the globe.Global wanning and effects of anthropogenic aerosols have been proposed as possible causes of these changes.In this work we identify the primary cause of the increases in precipitation intensity by contrasting observed characteristics of precipitation in the tropical 10°S-10°N oceanic region to those at higher latitudes (5°N-20°N, 20°N-45°N land area) in the Northern Hemisphere (NH) for 1979-2007, and a polluted region in eastern China (1955-2011).Significant increases in heavy precipitation and/or decreases in light precipitation with net increases in precipitation intensity are found in all regions examined, while amounts of total precipitation show relative small or negligible changes.Characteristics of these changes suggest that global warming rather than aerosol effects is the primary cause of the changes. |
| 会议日期： | 20150921 |
| 会议举办地点： | 北京 |
| 会议名称： | 2015中国科协海峡两岸青年科学家学术活动月两岸环保高层专家论坛 |
| 出版日期： | 2015-09-21 |
| 母体文献： | 2015中国科协海峡两岸青年科学家学术活动月两岸环保高层专家论坛论文集 |
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