Comprehensive modelling study on observed new particle formation at the SORPES station in Nanjing, China
Comprehensive modelling study on observed new particle formation at the SORPES station in Nanjing, China
复制标题
中国南京 SORPES 站观测到的新颗粒形成的综合模拟研究
DOI：
10.5194/acp-16-2477-2016
复制
发表时间：
2016-01-01
影响因子：
6.3
通讯作者：
Boy, Michael
中科院分区：
文献类型：
--
作者：
Huang, Xin;Zhou, Luxi;Boy, Michael
抽象。新粒子形成（NPF）由于其对气溶胶种群的影响以及对云凝结核的可能贡献，在过去的20年中得到了广泛的研究。然而，在中国经常发生高污染事件的大城市地区，关于这一主题的密集测量和建模活动仍然非常有限。本研究提供了一个全面的模拟研究的NPF事件发生在长江三角洲（YRD）地区，中国西部的结果。综合模拟系统结合了WRF-Chem（天气研究和预报模式与化学相结合）区域化学输送模式和MALTE-BOX截面箱模式（预测对流层低层新气溶胶形成的模式），能够模拟大气成核和随后的增长。在这里，我们提出了一个详细的讨论三个典型的NPF天，在此期间，测量的空气质量显着的影响，无论是人为活动，生物排放，或混合海洋和大陆的来源。总体而言，模拟的NPF事件与相应的测量结果基本一致，使我们能够进一步了解YRD地区的NPF过程。基于模拟，我们得出结论，生物有机化合物，特别是单萜，通过其低挥发性氧化产物在新形成的簇的初始冷凝生长中发挥着至关重要的作用。虽然在这个建模系统中仍然存在一些不确定性，但这种方法提供了更好地理解颗粒形成和生长过程的可能性。
Abstract. New particle formation (NPF) has been investigated intensively during the last 2 decades because of its influence on aerosol population and the possible contribution to cloud condensation nuclei. However, intensive measurements and modelling activities on this topic in urban metropolitan areas in China with frequent high-pollution episodes are still very limited. This study provides results from a comprehensive modelling study on the occurrence of NPF events in the western part of the Yangtze River Delta (YRD) region, China. The comprehensive modelling system, which combines the WRF-Chem (the Weather Research and Forecasting model coupled with Chemistry) regional chemical transport model and the MALTE-BOX sectional box model (the model to predict new aerosol formation in the lower troposphere), was shown to be capable of simulating atmospheric nucleation and subsequent growth. Here we present a detailed discussion of three typical NPF days, during which the measured air masses were notably influenced by either anthropogenic activities, biogenic emissions, or mixed ocean and continental sources. Overall, simulated NPF events were generally in good agreement with the corresponding measurements, enabling us to get further insights into NPF processes in the YRD region. Based on the simulations, we conclude that biogenic organic compounds, particularly monoterpenes, play an essential role in the initial condensational growth of newly formed clusters through their low-volatility oxidation products. Although some uncertainties remain in this modelling system, this method provides a possibility to better understand particle formation and growth processes.