高级检索
王佳泽, 凌肖露, 朱新胜, 等. 2023. 秋冬季大气混合污染对南京地区地表微气象学特征的影响分析——以2018年为例[J]. 气候与环境研究, 28(2): 216−228. doi: 10.3878/j.issn.1006-9585.2022.22053
引用本文: 王佳泽, 凌肖露, 朱新胜, 等. 2023. 秋冬季大气混合污染对南京地区地表微气象学特征的影响分析——以2018年为例[J]. 气候与环境研究, 28(2): 216−228. doi: 10.3878/j.issn.1006-9585.2022.22053
WANG Jiaze, LING Xiaolu, ZHU Xinsheng, et al. 2023. Influence of Mixed Air Pollution on Surface Micrometeorological Characteristics in Autumn and Winter in the Nanjing Area —Taking 2018 as an Example [J]. Climatic and Environmental Research (in Chinese), 28 (2): 216−228. doi: 10.3878/j.issn.1006-9585.2022.22053
Citation: WANG Jiaze, LING Xiaolu, ZHU Xinsheng, et al. 2023. Influence of Mixed Air Pollution on Surface Micrometeorological Characteristics in Autumn and Winter in the Nanjing Area —Taking 2018 as an Example [J]. Climatic and Environmental Research (in Chinese), 28 (2): 216−228. doi: 10.3878/j.issn.1006-9585.2022.22053

秋冬季大气混合污染对南京地区地表微气象学特征的影响分析——以2018年为例

Influence of Mixed Air Pollution on Surface Micrometeorological Characteristics in Autumn and Winter in the Nanjing Area —Taking 2018 as an Example

  • 摘要: 利用江苏南京长三角大气过程与环境变化国家野外科学观测研究站(SORPES)的多要素集成观测数据,分析了2018年11月27日至12月3日期间在远距离沙尘输送和本地人为排放的综合影响下,大气混合污染对该地区地表微气象要素及能量平衡特征的影响。在此基础上,利用合成分析对比了南京地区秋冬季不同污染状况下地表气象要素和能量分配的响应特征。结果表明,污染天的日间气温比清洁天下降约1℃,而夜间气温升高达2℃。污染天向下/向上短波辐射通量减少的幅度高达清洁天同比的48.8%和55.2%,而夜间向下/向上长波辐射通量增幅则达到清洁天的15%和5.1%。清洁天日间净辐射较污染天高出45.6%,日间地表感热通量较污染天高出75.5%,而地表潜热通量的差异相对较小。污染天夜间平均波文比大于清洁天,表明夜间感热交换更强烈。该研究有助于深入认识长三角城市群区不同来源、不同性质的大气污染物对地表能量平衡和局地气象要素的影响过程和机制,为城市群区空气污染与气象条件的相互作用以及空气质量预报和相应的防治对策提供科学依据。

     

    Abstract: Multielement observation data from the Station for Observing Regional Processes of the Earth System (SORPES) from 27 November to 3 December 2018 were used to quantitatively analyze the influence of mixed air pollution conditions on surface micrometeorological elements and energy balance characteristics under the combined effects of long-distance sand and dust and local emission pollution. On this basis, the response characteristics of surface meteorological elements and energy distribution under different pollution conditions in autumn and winter in Nanjing are compared by synthetic analysis. The results showed a daytime temperature of approximately 1 °C lower on polluted days than on clear days and a night temperature of approximately 2 °C higher. The downward/upward shortwave radiation flux on polluted days decreased as high as 48.8% and 55.2%, and the downward/upward long-wave radiation flux at night increased by 15% and 5.1%. On clear days, the net radiation budget during the day was 45.6% higher than that of polluted days, and the surface sensible heat flux was 75.5% higher than that of polluted days, while the difference in the surface latent heat flux was relatively small. The average Bowen ratio at night was higher on polluted days than on clear days, indicating stronger nighttime sensible heat exchange. The results help understand the influence process and mechanism of air pollution from different sources and different properties on surface energy balance and local meteorological elements in urban agglomerations of the Yangtze River Delta, as well as provide a verification basis for the interaction between air pollution and meteorological conditions, air quality prediction, and corresponding countermeasures.

     

/

返回文章
返回