Fast in-situ measurements of glyoxal (CHOCHO) and nitrous acid (HONO) in northern Chinese plane during CAREBEIJING – NCP2014
Kyung-Eun Min1,2, William P Dube2,3, Rebecca A Washenfelder1,4, Andrew O'Neil Langford1, Steven S Brown5, Sebastian Broch6, Hendrik Fuchs7, Sebastian Gomm8, Andreas Hofzumahaus9, Frank Holland8, Min HU10, L Gregory Huey11, Kamil Kubik8, Xin Li8, Xiaoxi Liu11, Keding Lu12, Franz Rohrer13, Min Shao14, Steven J Sjostedt11, Zhaofeng Tan15, Tong Zhu16, Andreas Wahner8, Baolin Wang17, Ming Wang16, Yuhang Wang18, Limin Zeng10, Yinsong Zhang16 and Yuanhang Zhang10, (1)NOAA ESRL, Boulder, CO, United States, (2)CIRES, Boulder, CO, United States, (3)NOAA ESRL Chemical Sciences Division, Boulder, CO, United States, (4)NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, CO, United States, (5)NOAA, Earth System Research Laboratory, Boulder, CO, United States, (6)Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-8: Troposphere, Jülich, Germany, (7)Forschungszentrum Jülich, Institute of Climate and Energy Systems, Troposphere (ICE-3), Jülich, Germany, (8)Forschungszentrum Jülich, Institute of Energy and Climate Research, IEK-8: Troposphere, Jülich, Germany, (9)Forschungszentrum Jülich, IEK8:Troposphere, Jülich, Germany, (10)Peking University, College of Environmental Sciences and Engineering, Beijing, China, (11)Georgia Institute of Technology Main Campus, School of Earth and Atmospheric Sciences, Atlanta, GA, United States, (12)Peking University, State Key Joint Laboratory or Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Beijing, China, (13)Forschungszentrum Jülich GmbH, Institute of Climate and Energy Systems, Troposphere (ICE-3), Jülich, Germany, (14)Jinan University, College of Environment and Climate, Institute for Environmental and Climate Research, Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou, China, (15)Peking University, State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Beijing, China, (16)Peking University, Beijing, China, (17)Qilu University of Technology, Beijing, China, (18)Georgia Institute of Technology Main Campus, School of Earth and Atmospheric Sciences, Atlanta, United States
Abstract:
The Northern China Plain has experienced visibility degradation and detrimental health impacts due to aerosol and photochemical pollution. To examine these air quality issues, CAREBEIJING-NCP2014 (Care Beijing – Northern China Plain 2014) was held in WangDu, Hebei province, China from 6 June to 15 July 2014.
We deployed our newly developed instrument, ACES (Airborne Cavity Enhanced Spectrometer), for high time resolution in-situ measurement of glyoxal (CHOCHO), nitrous acid (HONO) and other trace gases (NO2, H2O) to investigate mechanisms of oxidation processes and secondary organic aerosol (SOA) formation.
The in situ measurements of CHOCHO provide observational constraints on secondary organic aerosol formation and oxidation processes, since this molecule has been proposed to play a crucial role in forming aerosol due to its high water solubility, isomerization, and abundant production from the oxidation of many different volatile organic compounds (VOCs). A box model analysis incorporating secondary glyoxal sources from VOC oxidation and sinks to OH reaction, photolysis and heterogeneous uptake will be used to determine a budget and potential for SOA formation.
This work was supported by the National Natural Science Foundation of China (21190052), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB05010500) and the U.S. National Science Foundation Atmospheric (AGS-1405805).
