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| 城市化进程对热环境影响的WRF/UCM评估方法 |
| Evaluation Method of the Impact of Urbanization on Thermal Environment Based on WRF / UCM |
| 投稿时间：2019-02-20 修订日期：2019-03-25 |
| DOI： |
| 中文关键词: WRF/UCM 城市气候 数值模拟 城市化 |
| 英文关键词: WRF/UCM urban climate quantitative simulation urbanization |
| 基金项目:基于远景预测的城市气候灾害协同防治体系研究，国家社科基金项目 |
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| 中文摘要: |
| 建立了一种评估总规尺度城市规划布局对热环境影响的高精度模拟方法。实现了高精度土地利用、地形等数据向WRF静态数据场的转化，并确立了所需的物理方案和UCM模型城市参数。以大连2015年夏季连续晴朗天气8月9日-8月14日为例， 进行了100m的高分辨率模拟。模拟结果与气象站观测值吻合度较好。以1993年和2020年的两种土地利用和规划资料进行了WRF对比实验。结果表明自1993年以来，随着城市扩张，城市温度不断升高，平均风速下降。城市总体升温幅度为0.56℃，甘井子区，金普区等地区温度上升最明显，范围在1?1.5℃之间。温度上升幅度超过1℃的地区占城市总面积的12.6％。中山区，西岗区，沙河口区等城市建成区的温度升高范围较小，介于0.3℃与0.8℃之间。金普新区风速下降最明显，平均值为0.62 m?s-1，中山区，西岗区，沙河口区的城市扩张与1993年相比并不明显，但受到周边影响，风速也有所下降。 |
| 英文摘要: |
| A high-precision simulation method is established to evaluate the impact of urban planning layout on thermal environment. The process of transforming high-precision land use and terrain data into WRF static data field is achieved, and the required physical scheme and UCM model urban categories are established. A 100 m finer high resolution simulation was conducted for 5 consecutive days (August 9 - August 14) during the sunny days in Dalian, the simulation results are in good agreement with the observation data of the weather station. Two types of land use and planning information in 1993 and 2020 were run by the WRF. The results show that since 1993, with the urban expansion, the city temperature increases continuously and the average wind speed decreases. The average temperature increase 0.56 °C in urban constructed area. The temperature rises of Ganjingzi District and Jinpu District are evidently increased with the range being between 1 and 1.5 °C. The urban area with a temperature increase range above 1 °C accounts for 12.6% of the total area. The temperature of urbanized areas formerly，such as The Zhongshan District, Xigang District and Shahekou District, increase range is smaller, between 0.3 °C and 0.8 °C. The wind speed show a significant downward trend in the Jinpu New District, and the average value declines 0.62 m?s-1. Although the urban expansion of the Zhongshan District, Xigang District and Shahekou District is not evident compared with that in 1993, the wind speed also dropped as a result of the surrounding influences. |
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