skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Model bias in simulating major chemical components of PM2.5 in China

Journal Article · · Atmospheric Chemistry and Physics (Online)
 [1];  [1];  [1];  [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5];  [6];  [1]; ORCiD logo [7];  [1];  [1];  [1]; ORCiD logo [1];  [1]
  1. Peking Univ., Beijing (China). State Key Joint Lab. of Environmental Simulation and Pollution Control
  2. Chinese Academy of Sciences (CAS), Beijing (China). State Key Lab. of Atmospheric Boundary Layer Physics and Atmospheric Chemistry
  3. Univ. of Edinburgh (United Kingdom)
  4. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  5. Chinese Academy of Meteorological Sciences, Beijing (China). State Key Lab. of Severe Weather
  6. Tsinghua Univ., Beijing (China). Ministry of Education Key Lab. for Earth System Modeling
  7. Peking Univ., Beijing (China). State Key Joint Lab. of Environmental Simulation and Pollution Control; Forschungzentrum Juelich GmbH, Juelich (Germany)

High concentrations of PM2.5 (particulate matter with an aerodynamic diameter less than 2.5 µm) in China have caused severe visibility degradation. Accurate simulations of PM2.5 and its chemical components are essential for evaluating the effectiveness of pollution control strategies and the health and climate impacts of air pollution. In this study, we compared the GEOS-Chem model simulations with comprehensive datasets for organic aerosol (OA), sulfate, nitrate, and ammonium in China. Model results are evaluated spatially and temporally against observations. The new OA scheme with a simplified secondary organic aerosol (SOA) parameterization significantly improves the OA simulations in polluted urban areas, highlighting the important contributions of anthropogenic SOA from semivolatile and intermediate-volatility organic compounds. The model underestimates sulfate and overestimates nitrate for most of the sites throughout the year. More significant underestimation of sulfate occurs in winter, while the overestimation of nitrate is extremely large in summer. The model is unable to capture some of the main features in the diurnal pattern of the PM2.5 chemical components, suggesting inaccuracies in the presented processes. Potential model adjustments that may lead to a better representation of the boundary layer height, the precursor emissions, hydroxyl radical concentrations, the heterogeneous formation of sulfate and nitrate, and the wet deposition of nitric acid and nitrate have been tested in the sensitivity analysis. The results show that uncertainties in chemistry perhaps dominate the model biases. The proper implementation of heterogeneous sulfate formation and the good estimates of the concentrations of sulfur dioxide, hydroxyl radical, and aerosol liquid water are essential for the improvement of the sulfate simulation. The update of the heterogeneous uptake coefficient of nitrogen dioxide significantly reduces the modeled concentrations of nitrate. However, the large overestimation of nitrate concentrations remains in summer for all tested cases. The possible bias in the chemical production and the wet deposition of nitrate cannot fully explain the model overestimation of nitrate, suggesting issues related to the atmospheric removal of nitric acid and nitrate. A better understanding of the atmospheric nitrogen budget, in particular, the role of the photolysis of particulate nitrate, is needed for future model developments. Moreover, the results suggest that the remaining underestimation of OA in the model is associated with the underrepresented production of SOA.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE; National Key Research and Development Program of China; National Natural Science Foundation of China (NSFC); Natural Environment Research Council
Grant/Contract Number:
AC05-76RL01830; 2017YFC0209802; 51861135102; 91544107; 41875165; NE/N006879/1; 15Y02ESPCP; 16Y01ESPCP
OSTI ID:
1713333
Report Number(s):
PNNL-SA-153072
Journal Information:
Atmospheric Chemistry and Physics (Online), Vol. 20, Issue 20; ISSN 1680-7324
Publisher:
European Geosciences UnionCopyright Statement
Country of Publication:
United States
Language:
English

References (130)

Improvement of a Global High-Resolution Ammonia Emission Inventory for Combustion and Industrial Sources with New Data from the Residential and Transportation Sectors journal February 2017
Elemental composition of organic aerosol: The gap between ambient and laboratory measurements journal May 2015
Summertime fine particulate nitrate pollution in the North China Plain: increasing trends, formation mechanisms and implications for control policy journal January 2018
Why do models overestimate surface ozone in the Southeast United States? journal January 2016
Modeling the formation and aging of secondary organic aerosols in Los Angeles during CalNex 2010 journal January 2015
Chemical feedbacks weaken the wintertime response of particulate sulfate and nitrate to emissions reductions over the eastern United States journal July 2018
Vehicle Emissions as an Important Urban Ammonia Source in the United States and China journal January 2017
Impacts of potential HONO sources on the concentrations of oxidants and secondary organic aerosols in the Beijing-Tianjin-Hebei region of China journal January 2019
Updated SO2 emission estimates over China using OMI/Aura observations journal January 2018
A possible pathway for rapid growth of sulfate during haze days in China journal January 2017
Exploring the missing source of glyoxal (CHOCHO) over China: THE MISSING SOURCE OF GLYOXAL OVER CHINA journal May 2012
Characterization of anthropogenic organic aerosols by TOF-ACSM with the new capture vaporizer journal January 2020
Model simulation of ammonium and nitrate aerosols distribution in the Euro-Mediterranean region and their radiative and climatic effects over 1979–2016 journal January 2019
Quantifying trace gas uptake to tropospheric aerosol: recent advances and remaining challenges journal January 2012
Monthly top-down NO x emissions for China (2005-2012): A hybrid inversion method and trend analysis: MONTHLY TOP-DOWN NO X EMISSIONS FOR CHINA journal April 2017
Quantifying the effect of organic aerosol aging and intermediate-volatility emissions on regional-scale aerosol pollution in China journal June 2016
A high-resolution ammonia emission inventory in China: AMMONIA EMISSION IN CHINA journal March 2012
Impacts of meteorological uncertainties on the haze formation in Beijing–Tianjin–Hebei (BTH) during wintertime: a case study journal January 2017
Source apportionment of organic aerosol from 2-year highly time-resolved measurements by an aerosol chemical speciation monitor in Beijing, China journal January 2018
Exploring the severe winter haze in Beijing: the impact of synoptic weather, regional transport and heterogeneous reactions journal January 2015
Fossil Fuel Combustion-Related Emissions Dominate Atmospheric Ammonia Sources during Severe Haze Episodes: Evidence from 15 N-Stable Isotope in Size-Resolved Aerosol Ammonium journal June 2016
A two-dimensional volatility basis set – Part 2: Diagnostics of organic-aerosol evolution journal January 2012
Chemical Differences Between PM 1 and PM 2.5 in Highly Polluted Environment and Implications in Air Pollution Studies journal March 2020
Measuring and simulating particulate organics in the atmosphere: problems and prospects journal January 2000
Analysis of daily, monthly, and annual burned area using the fourth-generation global fire emissions database (GFED4): ANALYSIS OF BURNED AREA journal March 2013
Nitrate radicals and biogenic volatile organic compounds: oxidation, mechanisms, and organic aerosol journal January 2017
Modeling organic aerosols over east China using a volatility basis-set approach with aging mechanism in a regional air quality model journal January 2016
Global distribution and climate forcing of carbonaceous aerosols journal January 2002
Increase in NO x Emissions from Indian Thermal Power Plants during 1996–2010: Unit-Based Inventories and Multisatellite Observations journal July 2012
An Aerosol Chemical Speciation Monitor (ACSM) for Routine Monitoring of the Composition and Mass Concentrations of Ambient Aerosol journal July 2011
Effect of changes in climate and emissions on future sulfate-nitrate-ammonium aerosol levels in the United States: FUTURE INORGANIC AEROSOLS IN THE U.S. journal January 2009
Importance of tropospheric ClNO 2 chemistry across the Northern Hemisphere journal June 2014
Photolysis of Particulate Nitrate as a Source of HONO and NO x journal May 2017
Potential sources of nitrous acid (HONO) and their impacts on ozone: A WRF-Chem study in a polluted subtropical region: MODELING HONO IN A SUBTROPICAL REGION journal April 2016
Korean National Emissions Inventory System and 2007 Air Pollutant Emissions journal December 2011
A Comprehensive Model Test of the HONO Sources Constrained to Field Measurements at Rural North China Plain journal February 2019
The climatology of planetary boundary layer height in China derived from radiosonde and reanalysis data journal January 2016
Shift in the Temporal Trend of Boundary Layer Height in China Using Long‐Term (1979–2016) Radiosonde Data journal June 2019
Real-time chemical characterization of atmospheric particulate matter in China: A review journal June 2017
Field-Deployable, High-Resolution, Time-of-Flight Aerosol Mass Spectrometer journal December 2006
Radiative and heterogeneous chemical effects of aerosols on ozone and inorganic aerosols over East Asia journal May 2018
Toward a general parameterization of N 2 O 5 reactivity on aqueous particles: the competing effects of particle liquid water, nitrate and chloride journal January 2009
Enhanced sulfate formation during China's severe winter haze episode in January 2013 missing from current models: MODELING WINTER HAZE FORMATION IN CHINA journal September 2014
Development of a portable cavity-enhanced absorption spectrometer for the measurement of ambient NO3 and N2O5: experimental setup, lab characterizations, and field applications in a polluted urban environment journal January 2017
Planetary boundary layer height from CALIOP compared to radiosonde over China journal January 2016
Atmospheric nitrogen deposition to China: A model analysis on nitrogen budget and critical load exceedance journal March 2017
Rethinking the global secondary organic aerosol (SOA) budget: stronger production, faster removal, shorter lifetime journal January 2016
Measurement Methods to Determine Compliance with Ambient Air Quality Standards for Suspended Particles journal May 1995
Fast particulate nitrate formation via N 2 O 5 uptake aloft in winter in Beijing journal January 2018
Role of Nitrogen Dioxide in the Production of Sulfate during Chinese Haze-Aerosol Episodes journal January 2018
High H 2 O 2 Concentrations Observed during Haze Periods during the Winter in Beijing: Importance of H 2 O 2 Oxidation in Sulfate Formation journal November 2018
Hybrid Mass Balance/4D‐Var Joint Inversion of NO x and SO 2 Emissions in East Asia journal July 2019
Nitrogen Oxides Emissions, Chemistry, Deposition, and Export Over the Northeast United States During the WINTER Aircraft Campaign journal November 2018
Emissions of air pollutants and greenhouse gases over Asian regions during 2000–2008: Regional Emission inventory in ASia (REAS) version 2 journal January 2013
Natural and transboundary pollution influences on sulfate-nitrate-ammonium aerosols in the United States: Implications for policy journal January 2004
Volatility dependence of Henry's law constants of condensable organics: Application to estimate depositional loss of secondary organic aerosols: Solubility and removal of organic vapors journal July 2014
High N 2 O 5 Concentrations Observed in Urban Beijing: Implications of a Large Nitrate Formation Pathway journal August 2017
Atmospheric ammonia and particulate inorganic nitrogen over the United States journal January 2012
High-resolution ammonia emissions inventories in China from 1980 to 2012 journal January 2016
Parameterization of surface resistances to gaseous dry deposition in regional-scale numerical models journal January 1989
Quantifying the rural residential energy transition in China from 1992 to 2012 through a representative national survey journal May 2018
Implementation of dust emission and chemistry into the Community Multiscale Air Quality modeling system and initial application to an Asian dust storm episode journal January 2012
Mixing layer height and its implications for air pollution over Beijing, China journal January 2016
Radical chemistry at a rural site (Wangdu) in the North China Plain: observation and model calculations of OH, HO2 and RO2 radicals journal January 2017
Carbonaceous aerosols in China: top-down constraints on primary sources and estimation of secondary contribution journal January 2012
Optimized regional and interannual variability of lightning in a global chemical transport model constrained by LIS/OTD satellite data: IAV OF LIGHTNING CONSTRAINED BY LIS/OTD journal October 2012
Aerosol pH and liquid water content determine when particulate matter is sensitive to ammonia and nitrate availability journal January 2020
Long-term real-time measurements of aerosol particle composition in Beijing, China: seasonal variations, meteorological effects, and source analysis journal January 2015
ISORROPIA II: a computationally efficient thermodynamic equilibrium model for K<sup>+</sup>–Ca<sup>2+</sup>–Mg<sup>2+</sup>–NH<sub>4</sub><sup>+</sup>–Na<sup>+</sup>–SO<sub>4</sub><sup>2−</sup>–NO<sub>3</sub><sup>−</sup>–Cl<sup>−</sup>–H<sub>2</sub>O aerosols journal January 2007
Impact of various emission control schemes on air quality using WRF-Chem during APEC China 2014 journal September 2016
Sulfate-nitrate-ammonium aerosols over China: response to 2000–2015 emission changes of sulfur dioxide, nitrogen oxides, and ammonia journal January 2013
Sulfur dioxide and primary carbonaceous aerosol emissions in China and India, 1996–2010 journal January 2011
Aerosol and boundary-layer interactions and impact on air quality journal September 2017
Tropospheric Ozone Assessment Report: Assessment of global-scale model performance for global and regional ozone distributions, variability, and trends journal January 2018
Historical (1750–2014) anthropogenic emissions of reactive gases and aerosols from the Community Emissions Data System (CEDS) journal January 2018
Heterogeneous N 2 O 5 Uptake During Winter: Aircraft Measurements During the 2015 WINTER Campaign and Critical Evaluation of Current Parameterizations journal April 2018
New insights into PM 2.5 chemical composition and sources in two major cities in China during extreme haze events using aerosol mass spectrometry journal January 2016
Air quality and climate change, Topic 3 of the Model Inter-Comparison Study for Asia Phase III (MICS-Asia III) – Part 1: Overview and model evaluation journal January 2018
Gas-particle interactions above a Dutch heathland: II. Concentrations and surface exchange fluxes of atmospheric particles journal January 2004
Relationships between the planetary boundary layer height and surface pollutants derived from lidar observations over China: regional pattern and influencing factors journal January 2018
Sources of atmospheric nitrous acid: State of the science, current research needs, and future prospects journal August 2014
Underreported coal in statistics: A survey-based solid fuel consumption and emission inventory for the rural residential sector in China journal February 2019
The AeroCom evaluation and intercomparison of organic aerosol in global models journal January 2014
The Model of Emissions of Gases and Aerosols from Nature version 2.1 (MEGAN2.1): an extended and updated framework for modeling biogenic emissions journal January 2012
Biogenic secondary organic aerosol over the United States: Comparison of climatological simulations with observations journal January 2007
A global perspective on aerosol from low-volatility organic compounds journal January 2010
Modeling anthropogenically controlled secondary organic aerosols in a megacity: a simplified framework for global and climate models journal January 2011
Nighttime radical observations and chemistry journal January 2012
Chemical composition, sources, and aging process of submicron aerosols in Beijing: Contrast between summer and winter: PM POLLUTION IN BEIJING journal February 2016
Sampling and conditioning artifacts of PM2.5 in filter-based samplers journal March 2014
Sources, seasonality, and trends of southeast US aerosol: an integrated analysis of surface, aircraft, and satellite observations with the GEOS-Chem chemical transport model journal January 2015
Air pollution in mega cities in China journal January 2008
Relative importance of gas uptake on aerosol and ground surfaces characterized by equivalent uptake coefficients journal January 2019
Global impact of nitrate photolysis in sea-salt aerosol on NOx, OH, and O3 in the marine boundary layer journal January 2018
Reactive nitrogen chemistry in aerosol water as a source of sulfate during haze events in China journal December 2016
Oxidation of Gas-Phase SO 2 on the Surfaces of Acidic Microdroplets: Implications for Sulfate and Sulfate Radical Anion Formation in the Atmospheric Liquid Phase journal August 2015
The Role of Clouds in the Tropospheric NO x Cycle: A New Modeling Approach for Cloud Chemistry and Its Global Implications journal May 2019
Adjoint inversion of Chinese non-methane volatile organic compound emissions using space-based observations of formaldehyde and glyoxal journal January 2018
Sources of organic aerosols in Europe: a modeling study using CAMx with modified volatility basis set scheme journal January 2019
Sources of carbonaceous aerosols over the United States and implications for natural visibility journal January 2003
Severe haze in northern China: A synergy of anthropogenic emissions and atmospheric processes journal April 2019
High efficiency of livestock ammonia emission controls in alleviating particulate nitrate during a severe winter haze episode in northern China journal January 2019
Chemical and microphysical characterization of ambient aerosols with the aerodyne aerosol mass spectrometer journal January 2007
Impact of new laboratory studies of N 2 O 5 hydrolysis on global model budgets of tropospheric nitrogen oxides, ozone, and OH journal January 2005
Model evaluation and intercomparison of surface-level ozone and relevant species in East Asia in the context of MICS-Asia Phase III – Part 1: Overview journal January 2019
Persistent sulfate formation from London Fog to Chinese haze journal November 2016
Variations of ground-level O 3 and its precursors in Beijing in summertime between 2005 and 2011 journal January 2014
Wintertime photochemistry in Beijing: observations of ROx radical concentrations in the North China Plain during the BEST-ONE campaign journal January 2018
Steps towards a mechanistic model of global soil nitric oxide emissions: implementation and space based-constraints journal January 2012
Modelling secondary organic aerosols in China journal November 2017
MIX: a mosaic Asian anthropogenic emission inventory under the international collaboration framework of the MICS-Asia and HTAP journal January 2017
Wet and dry deposition of atmospheric nitrogen at ten sites in Northern China journal January 2012
Exploring atmospheric free-radical chemistry in China: the self-cleansing capacity and the formation of secondary air pollution journal July 2018
Simulations of sulfate–nitrate–ammonium (SNA) aerosols during the extreme haze events over northern China in October 2014 journal January 2016
The contribution of outdoor air pollution sources to premature mortality on a global scale journal September 2015
Global inorganic nitrate production mechanisms: comparison of a global model with nitrate isotope observations journal January 2020
Quantification of SO 2 Oxidation on Interfacial Surfaces of Acidic Micro-Droplets: Implication for Ambient Sulfate Formation journal July 2018
Revised treatment of wet scavenging processes dramatically improves GEOS-Chem 12.0.0 simulations of surface nitric acid, nitrate, and ammonium over the United States journal January 2019
Agricultural ammonia emissions in China: reconciling bottom-up and top-down estimates journal January 2018
Trends of non-methane hydrocarbons (NMHC) emissions in Beijing during 2002–2013 journal January 2015
One-year simulation of ozone and particulate matter in China using WRF/CMAQ modeling system journal January 2016
Constraints on Aerosol Nitrate Photolysis as a Potential Source of HONO and NO x journal November 2018
Spatial–temporal patterns of inorganic nitrogen air concentrations and deposition in eastern China journal January 2018
Formation of particulate sulfate and nitrate over the Pearl River Delta in the fall: Diagnostic analysis using the Community Multiscale Air Quality model journal July 2015
Exploring the vertical profile of atmospheric organic aerosol: comparing 17 aircraft field campaigns with a global model journal January 2011
Parameterization of N 2 O 5 reaction probabilities on the surface of particles containing ammonium, sulfate, and nitrate journal January 2008
Heterogeneous sulfate aerosol formation mechanisms during wintertime Chinese haze events: air quality model assessment using observations of sulfate oxygen isotopes in Beijing journal January 2019
Anthropogenic emission inventories in China: a review journal November 2017
MICS-Asia III: multi-model comparison and evaluation of aerosol over East Asia journal January 2019
Heterogeneous chemistry: a mechanism missing in current models to explain secondary inorganic aerosol formation during the January 2013 haze episode in North China journal January 2015