气候变化领域集成服务门户(CCPortal): Comprehensive evaluations of diurnal NO2 measurements during DISCOVER-AQ 2011: Effects of resolution-dependent representation of NOx emissions

CCPortal

DOI	10.5194/acp-21-11133-2021
	Comprehensive evaluations of diurnal NO2 measurements during DISCOVER-AQ 2011: Effects of resolution-dependent representation of NOx emissions
	Li J.; Wang Y.; Zhang R.; Smeltzer C.; Weinheimer A.; Herman J.; Boersma K.F.; Celarier E.A.; Long R.W.; Szykman J.J.; Delgado R.; Thompson A.M.; Knepp T.N.; Lamsal L.N.; Janz S.J.; Kowalewski M.G.; Liu X.; Nowlan C.R.
发表日期	2021
ISSN	1680-7316
起始页码	11133
结束页码	11160
卷号	21 期号:14
英文摘要	Nitrogen oxides (NOx=NO+NO2) play a crucial role in the formation of ozone and secondary inorganic and organic aerosols, thus affecting human health, global radiation budget, and climate. The diurnal and spatial variations in NO2 are functions of emissions, advection, deposition, vertical mixing, and chemistry. Their observations, therefore, provide useful constraints in our understanding of these factors. We employ a Regional chEmical and trAnsport model (REAM) to analyze the observed temporal (diurnal cycles) and spatial distributions of NO2 concentrations and tropospheric vertical column densities (TVCDs) using aircraft in situ measurements and surface EPA Air Quality System (AQS) observations as well as the measurements of TVCDs by satellite instruments (OMI: the Ozone Monitoring Instrument; GOME-2A: Global Ozone Monitoring Experiment - 2A), ground-based Pandora, and the Airborne Compact Atmospheric Mapper (ACAM) instrument in July 2011 during the DISCOVER-AQ campaign over the Baltimore-Washington region. The model simulations at 36 and 4ĝ€¯km resolutions are in reasonably good agreement with the regional mean temporospatial NO2 observations in the daytime. However, we find significant overestimations (underestimations) of model-simulated NO2 (O3) surface concentrations during nighttime, which can be mitigated by enhancing nocturnal vertical mixing in the model. Another discrepancy is that Pandora-measured NO2 TVCDs show much less variation in the late afternoon than simulated in the model. The higher-resolution 4ĝ€¯km simulations tend to show larger biases compared to the observations due largely to the larger spatial variations in NOx emissions in the model when the model spatial resolution is increased from 36 to 4ĝ€¯km. OMI, GOME-2A, and the high-resolution aircraft ACAM observations show a more dispersed distribution of NO2 vertical column densities (VCDs) and lower VCDs in urban regions than corresponding 36 and 4ĝ€¯km model simulations, likely reflecting the spatial distribution bias of NOx emissions in the National Emissions Inventory (NEI) 2011. © 2021 Jianfeng Li et al.
语种	英语
scopus关键词	atmospheric modeling; concentration (composition); diurnal variation; in situ measurement; nitrogen oxides; spatial distribution; spatial resolution; Baltimore; Maryland; United States; Washington [United States]
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246709
作者单位	School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States; National Center for Atmospheric Research, Boulder, CO, United States; Joint Center for Earth Systems Technology, University of Maryland Baltimore County, Baltimore, MD, United States; Royal Netherlands Meteorological Institute, De Bilt, Netherlands; Meteorology and Air Quality Group, Wageningen University, Wageningen, Netherlands; Nasa Goddard Space Flight Center, Greenbelt, MD, United States; Universities Space Research Association, Columbia, MD, United States; National Exposure Research Laboratory, Office of Research and Development, Us Environmental Protection Agency, Research Triangle Park, NC, United States; Nasa Langley Research Center, Virginia, United States; Science Systems and Applications Inc., Hampton, VA, United States; Atomic and Molecular Physics Division, Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States; Atmospheric Sciences and Global Change Division, Pacific Nor...
推荐引用方式 GB/T 7714	Li J.,Wang Y.,Zhang R.,et al. Comprehensive evaluations of diurnal NO2 measurements during DISCOVER-AQ 2011: Effects of resolution-dependent representation of NOx emissions[J],2021,21(14).
APA	Li J..,Wang Y..,Zhang R..,Smeltzer C..,Weinheimer A..,...&Nowlan C.R..(2021).Comprehensive evaluations of diurnal NO2 measurements during DISCOVER-AQ 2011: Effects of resolution-dependent representation of NOx emissions.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(14).
MLA	Li J.,et al."Comprehensive evaluations of diurnal NO2 measurements during DISCOVER-AQ 2011: Effects of resolution-dependent representation of NOx emissions".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.14(2021).