Articles | Volume 22, issue 5
https://doi.org/10.5194/acp-22-3097-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-22-3097-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Technical note
| 
08 Mar 2022
Technical note |
| 08 Mar 2022
| 08 Mar 2022
Technical note: Real-time diagnosis of the hygroscopic growth micro-dynamics of nanoparticles with Fourier transform infrared spectroscopy
Xiuli Wei
Key Laboratory of Environmental Optics and Technology, Anhui Institute of
Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese
Academy of Sciences, Hefei 230031, China
Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230031, China
Haosheng Dai
Key Laboratory of Environmental Optics and Technology, Anhui Institute of
Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese
Academy of Sciences, Hefei 230031, China
Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230031, China
Huaqiao Gui
CORRESPONDING AUTHOR
Key Laboratory of Environmental Optics and Technology, Anhui Institute of
Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese
Academy of Sciences, Hefei 230031, China
CAS Center for Excellence in Regional Atmospheric Environment, Institute
of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
Jiaoshi Zhang
Key Laboratory of Environmental Optics and Technology, Anhui Institute of
Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese
Academy of Sciences, Hefei 230031, China
Yin Cheng
Key Laboratory of Environmental Optics and Technology, Anhui Institute of
Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese
Academy of Sciences, Hefei 230031, China
Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230031, China
Jie Wang
Key Laboratory of Environmental Optics and Technology, Anhui Institute of
Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese
Academy of Sciences, Hefei 230031, China
Yixin Yang
Key Laboratory of Environmental Optics and Technology, Anhui Institute of
Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese
Academy of Sciences, Hefei 230031, China
Key Laboratory of Environmental Optics and Technology, Anhui Institute of
Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese
Academy of Sciences, Hefei 230031, China
Jianguo Liu
Key Laboratory of Environmental Optics and Technology, Anhui Institute of
Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese
Academy of Sciences, Hefei 230031, China
Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230031, China
CAS Center for Excellence in Regional Atmospheric Environment, Institute
of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
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The variability, sources, and transport of ethane (C2H6) over eastern China from 2015 to 2020 were studied using ground-based Fourier transform infrared (FTIR) spectroscopy and GEOS-Chem simulations. C2H6 variability is driven by both meteorological and emission factors. The reduction in C2H6 in recent years over eastern China points to air quality improvement in China.
Youwen Sun, Hao Yin, Yuan Cheng, Qianggong Zhang, Bo Zheng, Justus Notholt, Xiao Lu, Cheng Liu, Yuan Tian, and Jianguo Liu
Atmos. Chem. Phys., 21, 9201–9222, https://doi.org/10.5194/acp-21-9201-2021, https://doi.org/10.5194/acp-21-9201-2021, 2021
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Yan Xiang, Tianshu Zhang, Chaoqun Ma, Lihui Lv, Jianguo Liu, Wenqing Liu, and Yafang Cheng
Atmos. Chem. Phys., 21, 7023–7037, https://doi.org/10.5194/acp-21-7023-2021, https://doi.org/10.5194/acp-21-7023-2021, 2021
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For the first time, a vertical observation network consisting of 13 aerosol lidars and more than 1000 ground observation stations were combined with a data assimilation technique to reveal key processes driving the 3-D dynamic evolution of PM2.5 concentrations during extreme heavy aerosol pollution on the North China Plain.
Youwen Sun, Hao Yin, Cheng Liu, Lin Zhang, Yuan Cheng, Mathias Palm, Justus Notholt, Xiao Lu, Corinne Vigouroux, Bo Zheng, Wei Wang, Nicholas Jones, Changong Shan, Min Qin, Yuan Tian, Qihou Hu, Fanhao Meng, and Jianguo Liu
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This study mapped the drivers of HCHO variability from 2015 to 2019 over eastern China. Hydroxyl (OH) radical production rates from HCHO photolysis were evaluated. The relative contributions of emitted and photochemical sources to the observed HCHO abundance were analyzed. Contributions of various emission sources and geographical regions to the observed HCHO summertime enhancements were determined.
Miguel Ricardo A. Hilario, Ewan Crosbie, Michael Shook, Jeffrey S. Reid, Maria Obiminda L. Cambaliza, James Bernard B. Simpas, Luke Ziemba, Joshua P. DiGangi, Glenn S. Diskin, Phu Nguyen, F. Joseph Turk, Edward Winstead, Claire E. Robinson, Jian Wang, Jiaoshi Zhang, Yang Wang, Subin Yoon, James Flynn, Sergio L. Alvarez, Ali Behrangi, and Armin Sorooshian
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This study characterizes long-range transport from major Asian pollution sources into the tropical northwest Pacific and the impact of scavenging on these air masses. We combined aircraft observations, HYSPLIT trajectories, reanalysis, and satellite retrievals to reveal distinct composition and size distribution profiles associated with specific emission sources and wet scavenging. The results of this work have implications for international policymaking related to climate and health.
Zhuang Wang, Cheng Liu, Zhouqing Xie, Qihou Hu, Meinrat O. Andreae, Yunsheng Dong, Chun Zhao, Ting Liu, Yizhi Zhu, Haoran Liu, Chengzhi Xing, Wei Tan, Xiangguang Ji, Jinan Lin, and Jianguo Liu
Atmos. Chem. Phys., 20, 14917–14932, https://doi.org/10.5194/acp-20-14917-2020, https://doi.org/10.5194/acp-20-14917-2020, 2020
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Significant stratification of aerosols was observed in North China. Polluted dust dominated above the PBL, and anthropogenic aerosols prevailed within the PBL, which is mainly driven by meteorological conditions. The key role of the elevated dust is to alter atmospheric thermodynamics and stability, causing the suppression of turbulence exchange and a decrease in PBL height, especially during the dissipation stage, thereby inhibiting dissipation of persistent heavy surface haze pollution.
Ke Tang, Min Qin, Wu Fang, Jun Duan, Fanhao Meng, Kaidi Ye, Helu Zhang, Pinhua Xie, Yabai He, Wenbin Xu, Jianguo Liu, and Wenqing Liu
Atmos. Meas. Tech., 13, 6487–6499, https://doi.org/10.5194/amt-13-6487-2020, https://doi.org/10.5194/amt-13-6487-2020, 2020
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We present an improved instrument for the simultaneous detection of atmospheric nitrous acid (HONO) and nitrogen dioxide (NO2). The robustness of the system is verified by simulating the influence of the relative change in light intensity on the measurement results. The instrument's capability to make fast high-sensitivity measurements of HONO and NO2 is of great significance for understanding the source of HONO and studying its role in atmospheric chemistry.
Wenjing Su, Cheng Liu, Ka Lok Chan, Qihou Hu, Haoran Liu, Xiangguang Ji, Yizhi Zhu, Ting Liu, Chengxin Zhang, Yujia Chen, and Jianguo Liu
Atmos. Meas. Tech., 13, 6271–6292, https://doi.org/10.5194/amt-13-6271-2020, https://doi.org/10.5194/amt-13-6271-2020, 2020
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The paper presents an improved retrieval of the TROPOMI tropospheric HCHO column over China. The new retrieval optimized both slant column retrieval and air mass factor calculation for TROPOMI observations of HCHO over China. The improved TROPOMI HCHO is subsequently validated by MAX-DOAS observations. Compared to the operational product, the improved HCHO agrees better with the MAX-DOAS data and thus is better suited for the analysis of regional- and city-scale pollution in China.
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Short summary
We demonstrated the usage of the Fourier transform infrared (FTIR) spectroscopic technique to characterize in real time the hygroscopic growth properties of nanoparticles and their phase transition micro-dynamics at the molecular level. We first realize real-time measurements of water content and dry nanoparticle mass to characterize hygroscopic growth factors. We then identify in real time the hydration interactions and the dynamic hygroscopic growth process of the functional groups.
We demonstrated the usage of the Fourier transform infrared (FTIR) spectroscopic technique to...
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