评价潮湿城市的夏季热环境:当地气候区的角度
Junjie Wang1, Jun Yang1,2,3, Xiangming Xiao4
1Human Settlements Research Center, Liaoning Normal University, Dalian 116029, China.
iScience
|June 30, 2025
概括
由于气候变化,城市的热量和湿度正在恶化. 这项研究使用了当地气候区 (LCZ) 来分析温度和湿度的变化,发现特定城市地区的气候变暖显著.
科学领域:
- 城市气候学 城市气候学
- 环境科学环境科学
- 地理 地理 地理 地理.
背景情况:
- 单个土地表面温度 (LST) 不足以表征城市的热量和湿度.
- 近地表空气温度和湿度越来越多地用于研究城市气候变化.
- 气候变暖加剧了城市的炎热和潮湿条件.
研究的目的:
- 利用当地气候区 (LCZ) 分析城市热量和湿度的空间和时间变化.
- 了解高湿度城市夏季炎热气候的演变.
- 为了研究相对湿度,LST和近地表空气温度之间的关系.
主要方法:
- 当地气候区 (LCZ) 理论的应用.
- 对2013年至2022年陆地表面温度 (LST) 和近地表空气温度和湿度数据的分析.
- 不同的LCZ和城市位置的温度和湿度的比较.
主要成果:
- 从2013年到2022年,平均LST增加了6.15°C.
- 确定LCZ8,LCZ10和紧LCZ为主要变暖区.
- 相对湿度显著降低了近地表温度,但对LST没有影响.
- 湿球温度在城市中心低于郊区,在LCZ1-3高于LCZ4-6.
结论:
- LCZ框架有效地描述了热和潮湿的城市环境及其气候演变.
- 城市变暖趋势在特定的低温区域显著,突出显示了有针对性的减缓战略的必要性.
- 湿度在地表和近地表城市温度中起着差异性的作用,影响热舒适度.
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