基于WRF-LUCY模型的冬季集中供暖对局地气候的影响

黄蓓, 倪广恒

清华大学学报(自然科学版) ›› 2020, Vol. 60 ›› Issue (2) : 162-170.

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PDF(8942 KB)
清华大学学报(自然科学版) ›› 2020, Vol. 60 ›› Issue (2) : 162-170. DOI: 10.16511/j.cnki.qhdxxb.2019.22.040
水利水电工程

基于WRF-LUCY模型的冬季集中供暖对局地气候的影响

  • 黄蓓, 倪广恒
作者信息 +

Local climate impact of central heating in the winter based on the WRF-LUCY model

  • HUANG Bei, NI Guangheng
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文章历史 +

摘要

快速的城市化发展通过改变下垫面影响了区域的陆气过程,同时高密度、高强度的人类活动带来大量的人为热排放,加剧了城市局地气候变化。分析人为热及其动态变化对城市局地气候的影响,对探究城市陆气过程具有重要的科学价值。该研究在中尺度气象模式(WRF)中考虑人为热估算模型(LUCY),选取北京地区为研究对象,对比分析了在WRF中是否考虑高时空精度的人为热带来的差异,并以冬季集中供暖为例分析了大量人为热集中释放对局地气候的影响。结果显示:采用WRF-LUCY模型的模拟结果在各气象要素变化以及城乡环流中均有较为合理的表现;集中供暖前后的人为热变化导致空气温度骤增且快速达到新的稳定状态;气温的升高幅度在夜间较大,日间较小。该研究为城市局地气候模拟提供了可靠的工具,为城市能耗规划和环境改善提供了科学依据。

Abstract

Rapid urbanization affects land and atmospheric processes through changes in the underlying surface conditions. At the same time, high-density, high-intensity human activities in urban areas result in large amounts of anthropogenic heat (AH) emissions which impact the local urban climate. Thus, research on the impact of anthropogenic heat on the local urban climate is important for exploring urban land-atmosphere interactions. This study couples weather research and forecasting model (WRF) with the heating results calculated by the large scale urban consumption of energy (LUCY) model. This study analyzes how the high spatial and temporal resolution of the anthropogenic heat emission model used in the WRF model affects the simulation results. The Beijing winter central heating system is used as an example to study the impact of a large anthropogenic heat release on the local climate. The results show that the WRF-LUCY model gives reasonable predictions of the meteorological elements and the urban-rural circulation, that the anthropogenic heat released by the heating causes the air temperature to rapidly increase, and that the temperature rise is greater at night than during the day. This study provides a reliable tool for urban local climate simulations and a scientific basis for urban energy planning and environmental improvement.

关键词

城市局地气候 / 冬季集中供暖 / 人为热

Key words

urban local climate / winter central heating / anthropogenic heat

引用本文

导出引用
黄蓓, 倪广恒. 基于WRF-LUCY模型的冬季集中供暖对局地气候的影响[J]. 清华大学学报(自然科学版). 2020, 60(2): 162-170 https://doi.org/10.16511/j.cnki.qhdxxb.2019.22.040
HUANG Bei, NI Guangheng. Local climate impact of central heating in the winter based on the WRF-LUCY model[J]. Journal of Tsinghua University(Science and Technology). 2020, 60(2): 162-170 https://doi.org/10.16511/j.cnki.qhdxxb.2019.22.040

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基金

倪广恒,教授,E-mail:ghni@tsinghua.edu.cn

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