频率主导印度未来热浪的强度
1DST-Mahamana Centre of Excellence in Climate Change Research, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India.
iScience
|November 29, 2023
概括
印度未来的热浪频率将大幅增加,特别是在更高排放的场景下. 印度西北部,中部和中南部被确定为未来的热浪热点,需要紧急的适应战略.
科学领域:
- 气候科学 气候科学
- 环境科学 环境科学
- 气象学 天气学
背景情况:
- 热浪对印度的人类健康,农业和基础设施构成重大威胁.
- 了解未来的热浪特征对于有效的适应计划至关重要.
研究的目的:
- 分析印度热浪频率和强度的预测变化.
- 确定最容易受到未来热浪事件影响的地区.
- 为制定耐热政策提供基准.
主要方法:
- 利用了南亚 (SA) 区域气候模型模拟的协调区域气候降级实验 (CORDEX).
- 分析了中期 (2041-2060) 和长期 (2081-2099) 未来时期的模拟.
- 雇员代表度路径 (RCP) 4.5 和 RCP 8.5 排放场景.
- 使用历史数据验证模型性能,确定SMHI_CSIRO-MK3.6作为表现最佳的模型.
主要成果:
- 根据RCP 4.5.5,预计热浪频率将增加四到七倍.
- 根据RCP 8.5.5,预计热浪频率将增加五到十倍.
- 在这两种情景中观察到频率主导强度的增加.
- 确定印度西北部,中部和中南部是未来的热浪热点,南中部地区的增长最大.
结论:
- 印度未来的热浪事件预计将变得更加频繁和强烈.
- 印度中南部被确定为一个关键地区,需要立即关注热浪适应.
- 这些高分辨率的预测对于告知耐热政策和适应措施至关重要.
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