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在整个美国比较近似的热应力测量
Yoonjung Ahn1,2, Cascade Tuholske3,4, Robbie M Parks5
1Geography & Atmospheric Science Department University of Kansas Lawrence KS USA.
GeoHealth
|January 24, 2024
概括
准确的天气数据对于了解热应激至关重要. 网格数据集与地面测量热量指数和WBGT强烈一致,有助于公共卫生工作.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 气候科学 气候科学
背景情况:
- 气候变化加剧了热浪,造成了全球重大公共卫生风险.
- 准确测量热应激对于减轻健康影响至关重要.
- 现有的热应激指标,如热量指数 (HI) 和湿球球温度 (WBGT),依赖于气象数据,但缺乏对数据集的系统比较.
研究的目的:
- 系统地比较用于热应力指标的网格天气数据集.
- 评估近似HI和WBGT测量与不同气候的地面数据之间的一致性.
- 为了确定气象变量对热应力测量精度的影响.
主要方法:
- 通过使用网格数据 (ERA5-Land,PRISM,Daymet) 对地面测量进行了三项热量测量 (HImax,WBGT_Bernard,WBGT_Liljegren) 的比较.
- 分析了Köppen-Geiger气候和各种气象输入变量 (温度,湿度,风,太阳辐射) 的差异.
- 使用了包括R平方和根均平方误差 (RMSE) 在内的统计措施.
主要成果:
- 在HI和WBGT_Bernard近似和地面数据 (R2 0.76-0.95) 之间观察到强烈一致.
- 热量测量的差异因气候区和输入气象变量而异.
- 相对湿度,太阳辐射和风速对测量准确度产生了显著影响.
结论:
- 网格化的天气数据集为评估热量暴露提供了可靠的基础.
- 进一步的研究和本地监测网络是必要的,以减少测量错误.
- 更好地了解热应激措施对于提高与极端热有关的公共卫生结果至关重要.
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