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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Regional scale analysis of climate extremes in an SRM geoengineering simulation, Part 1: precipitation extremes
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Regional scale analysis of climate extremes in an SRM geoengineering simulation, Part 1: precipitation extremes

机译：SRM Geoengineed模拟中气候极值区域规模分析，第1部分：降水极值

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In this study, we examine the statistics of precipitation extreme events in a model simulation of solar radiation management (SRM) geoengineering. We consider both intensity and frequency-based extreme indices for precipitation. The analysis is performed over both large-scale domains as well as regional scales ( 22 Giorgi land regions). We find that precipitation extremes are substantially reduced in geoengineering simulation: the magnitude of change is much smaller than those that occur in a simulation with elevated atmospheric CO2 alone. In the geoengineered climate, though the global mean of the intensity of extreme precipitation events is slightly less than in control climate, substantial changes remain on regional scales. We do not find significant changes in the frequency of precipitation extremes in geoengineering simulation compared to control simulation on global and regional scales. We infer that SRM schemes are likely to reduce precipitation extremes and the associated impacts on a global scale. However, we note that a comprehensive assessment of moral, social, ethical, legal, technological, economic, political and governance issues is required for using SRM methods to counter the impacts of climate change.
机译：在这项研究中，我们研究了太阳辐射管理模型模拟中降水极端事件的统计数据。我们考虑降水的强度和基于频率的极端指标。分析在大型域以及区域尺度（22个Giorgi Land区）上进行。我们发现，在地理工程模拟中，降水极端显着降低：变化的大小远小于在升高的大气二氧化碳的模拟中发生的变化。在地理工程气氛中，尽管全球性沉淀事件强度的平均值略低于控制气候，但在区域尺度上仍然存在大量变化。与全球和区域尺度的控制仿真相比，我们在地理工程模拟中没有发现降水极端频率的显着变化。我们推断SRM方案可能会降低降水和对全球范围的相关影响。但是，我们注意到，使用SRM方法对抗气候变化的影响，需要全面评估道德，社会，道德，法律，技术，经济，政治和治理问题。

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