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Title: Emission or atmospheric processes? An attempt to attribute the source of large bias of aerosols in eastern China simulated by global climate models

Journal Article · · Atmospheric Chemistry and Physics (Online)

Here, global climate models often underestimate aerosol loadings in China, and these biases can have significant implications for anthropogenic aerosol radiative forcing and climate effects. The biases may be caused by either the emission inventory or the treatment of aerosol processes in the models, or both, but so far no consensus has been reached. In this study, a relatively new emission inventory based on energy statistics and technology, Multi-resolution Emission Inventory for China (MEIC), is used to drive the Community Atmosphere Model version 5 (CAM5) to evaluate aerosol distribution and radiative effects against observations in China. The model results are compared with the model simulations with the widely used Intergovernmental Panel on Climate Change Fifth Assessment Report (IPCC AR5) emission inventory. We find that the new MEIC emission improves the aerosol optical depth (AOD) simulations in eastern China and explains 22–28 % of the AOD low bias simulated with the AR5 emission. However, AOD is still biased low in eastern China. Seasonal variation of the MEIC emission leads to a better agreement with the observed seasonal variation of primary aerosols than the AR5 emission, but the concentrations are still underestimated. This implies that the atmospheric loadings of primary aerosols are closely related to the emission, which may still be underestimated over eastern China. In contrast, the seasonal variations of secondary aerosols depend more on aerosol processes (e.g., gas- and aqueous-phase production from precursor gases) that are associated with meteorological conditions and to a lesser extent on the emission. It indicates that the emissions of precursor gases for the secondary aerosols alone cannot explain the low bias in the model. Aerosol secondary production processes in CAM5 should also be revisited. The simulation using MEIC estimates the annual-average aerosol direct radiative effects (ADREs) at the top of the atmosphere (TOA), at the surface, and in the atmosphere to be –5.02, –18.47, and 13.45 W m–2, respectively, over eastern China, which are enhanced by –0.91, –3.48, and 2.57 W m–2 compared with the AR5 emission. The differences of ADREs by using MEIC and AR5 emissions are larger than the decadal changes of the modeled ADREs, indicating the uncertainty of the emission inventories. This study highlights the importance of improving both the emission and aerosol secondary production processes in modeling the atmospheric aerosols and their radiative effects. Yet, if the estimations of MEIC emissions in trace gases do not suffer similar biases to those in the AOD, our findings will help affirm a fundamental error in the conversion from precursor gases to secondary aerosols as hinted in other recent studies following different approaches.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1421322
Report Number(s):
PNNL-SA-130097
Journal Information:
Atmospheric Chemistry and Physics (Online), Vol. 18, Issue 2; ISSN 1680-7324
Publisher:
European Geosciences UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

References (91)

Aerosol optical properties and radiative effect determined from sky-radiometer over Loess Plateau of Northwest China journal January 2011
Advances in studying interactions between aerosols and monsoon in China journal October 2015
Primary anthropogenic aerosol emission trends for China, 1990–2005 journal January 2011
Sulfur dioxide and primary carbonaceous aerosol emissions in China and India, 1996–2010 journal January 2011
The effect of harmonized emissions on aerosol properties in global models – an AeroCom experiment journal January 2007
Aerosol and monsoon climate interactions over Asia journal November 2016
Model development of dust emission and heterogeneous chemistry within the Community Multiscale Air Quality modeling system and its application over East Asia journal January 2016
Historical (1750 - 2014) anthropogenic emissions of reactive gases and aerosols from the Community Emission Data System (CEDS) preprint March 2017
Toward a minimal representation of aerosols in climate models: description and evaluation in the Community Atmosphere Model CAM5 journal January 2012
Mechanism for the formation of the January 2013 heavy haze pollution episode over central and eastern China journal November 2013
Radiative forcing in the ACCMIP historical and future climate simulations journal January 2013
Radiative forcing of the direct aerosol effect from AeroCom Phase II simulations journal January 2013
Light Absorption by Carbonaceous Particles: An Investigative Review journal January 2006
Elucidating severe urban haze formation in China journal November 2014
The role of circulation features on black carbon transport into the Arctic in the Community Atmosphere Model version 5 (CAM5): BC TRANSPORT IN OFF-LINE CAM5 journal May 2013
Enhanced haze pollution by black carbon in megacities in China journal March 2016
Impacts of uncertainty in AVOC emissions on the summer ROx budget and ozone production rate in the three most rapidly-developing economic growth regions of China journal September 2014
Aerosol Properties Over Bright-Reflecting Source Regions journal March 2004
An investigation of the sub-grid variability of trace gases and aerosols for global climate modeling journal January 2010
Understanding of regional air pollution over China using CMAQ, part II. Process analysis and sensitivity of ozone and particulate matter to precursor emissions journal September 2010
Seasonality in anthropogenic aerosol effects on East Asian climate simulated with CAM5: SEASONALITY IN AEROSOL CLIMATE EFFECTS journal October 2015
Aerosol optical properties and radiative effects in the Yangtze Delta region of China journal January 2007
The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP): overview and description of models, simulations and climate diagnostics journal January 2013
Radiative forcing by aerosols as derived from the AeroCom present-day and pre-industrial simulations journal January 2006
Effect of internal mixture on black carbon radiative forcing journal December 2011
Historical (1850–2000) gridded anthropogenic and biomass burning emissions of reactive gases and aerosols: methodology and application journal January 2010
Reactive nitrogen chemistry in aerosol water as a source of sulfate during haze events in China journal December 2016
The ERA-Interim reanalysis: configuration and performance of the data assimilation system journal April 2011
Aerosol optical properties and their radiative effects in northern China journal January 2007
Pathways of sulfate enhancement by natural and anthropogenic mineral aerosols in China journal December 2014
Constraining black carbon aerosol over Asia using OMI aerosol absorption optical depth and the adjoint of GEOS-Chem journal January 2015
Asian emissions in 2006 for the NASA INTEX-B mission journal January 2009
A compilation of aerosol optical properties and calculation of direct radiative forcing over an urban region in northern China journal January 2007
Satellite remote sensing of changes in NO x emissions over China during 1996–2010 journal March 2012
Formation of Urban Fine Particulate Matter journal February 2015
Modeling study on the air quality impacts from emission reductions and atypical meteorological conditions during the 2008 Beijing Olympics journal March 2011
The Regional Particulate Matter Model: 1. Model description and preliminary results journal January 1995
Atmospheric aerosol compositions in China: spatial/temporal variability, chemical signature, regional haze distribution and comparisons with global aerosols journal January 2012
An improved parameterization for sulfuric acid–water nucleation rates for tropospheric and stratospheric conditions journal January 2002
Improvement and further development in CESM/CAM5: gas-phase chemistry and inorganic aerosol treatments journal January 2014
First observation-based estimates of cloud-free aerosol radiative forcing across China journal January 2010
Persistent sulfate formation from London Fog to Chinese haze journal November 2016
NO x emissions in China: historical trends and future perspectives journal January 2013
WRF-Chem simulations of aerosols and anthropogenic aerosol radiative forcing in East Asia journal August 2014
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
MIX: a mosaic Asian anthropogenic emission inventory under the international collaboration framework of the MICS-Asia and HTAP journal January 2017
Multiphase chemistry of atmospheric amines journal January 2013
Mesoscale modelling study of the interactions between aerosols and PBL meteorology during a haze episode in China Jing–Jin–Ji and its near surrounding region – Part 2: Aerosols' radiative feedback effects journal January 2015
Aerosol optical depth (AOD) and Ångström exponent of aerosols observed by the Chinese Sun Hazemeter Network from August 2004 to September 2005 journal January 2007
Simulations of sulfate–nitrate–ammonium (SNA) aerosols during the extreme haze events over northern China in October 2014 journal January 2016
Regional CO pollution and export in China simulated by the high-resolution nested-grid GEOS-Chem model journal January 2009
Assessing the CAM5 physics suite in the WRF-Chem model: implementation, resolution sensitivity, and a first evaluation for a regional case study journal January 2014
Projections of SO 2 , NO x and carbonaceous aerosols emissions in Asia journal January 2009
Aerosol trends over China, 1980–2000 journal May 2008
Decadal simulation and comprehensive evaluation of CESM/CAM5.1 with advanced chemistry, aerosol microphysics, and aerosol-cloud interactions journal February 2015
Quantifying the uncertainties of a bottom-up emission inventory of anthropogenic atmospheric pollutants in China journal January 2011
NO x lifetimes and emissions of cities and power plants in polluted background estimated by satellite observations journal January 2016
Optical properties and radiative forcing of urban aerosols in Nanjing, China journal February 2014
Parameterization of optical properties for hydrated internally mixed aerosol: PARAMETERIZATION OF OPTICAL PROPERTIES FOR HYDRATED AEROSOL journal May 2007
Satellite detection and model verification of NO x emissions from power plants in Northern China journal October 2010
High-resolution ammonia emissions inventories in China from 1980 to 2012 journal January 2016
The contribution of China’s emissions to global climate forcing journal March 2016
Global evaluation of the Collection 5 MODIS dark-target aerosol products over land journal January 2010
Enhanced formation of fine particulate nitrate at a rural site on the North China Plain in summer: The important roles of ammonia and ozone journal January 2015
Growth in NO x emissions from power plants in China: bottom-up estimates and satellite observations journal January 2012
Transpacific transport of ozone pollution and the effect of recent Asian emission increases on air quality in North America: an integrated analysis using satellite, aircraft, ozonesonde, and surface observations journal January 2008
Carbonaceous aerosols in China: top-down constraints on primary sources and estimation of secondary contribution journal January 2012
Atmospheric sulphuric acid and aerosol formation: implications from atmospheric measurements for nucleation and early growth mechanisms journal January 2006
Significant reduction of surface solar irradiance induced by aerosols in a suburban region in northeastern China journal January 2007
Uncertainties in anthropogenic aerosol concentrations and direct radiative forcing induced by emission inventories in eastern China journal December 2015
Technical Note: On the use of nudging for aerosol–climate model intercomparison studies journal January 2014
Climatic effects of air pollutants over china: A review journal November 2014
Recent large reduction in sulfur dioxide emissions from Chinese power plants observed by the Ozone Monitoring Instrument: SO journal April 2010
A multimodel assessment of the influence of regional anthropogenic emission reductions on aerosol direct radiative forcing and the role of intercontinental transport: AEROSOL INTERCONTINENTAL TRANSPORT journal January 2013
Optical Properties of Aerosols and Clouds: The Software Package OPAC journal May 1998
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
Mineral dust and NOx promote the conversion of SO2 to sulfate in heavy pollution days journal February 2014
Sulfate-nitrate-ammonium aerosols over China: response to 2000–2015 emission changes of sulfur dioxide, nitrogen oxides, and ammonia journal January 2013
Atmospheric Chemistry and Physics: From Air Pollution to Climate Change journal October 1998
Global evaluation of the Collection 5 MODIS dark-target aerosol products over land journal January 2010
Historical (1850–2000) gridded anthropogenic and biomass burning emissions of reactive gases and aerosols: methodology and application journal January 2010
Atmospheric aerosol compositions in China: spatial/temporal variability, chemical signature, regional haze distribution and comparisons with global aerosols journal January 2011
Sulfate-nitrate-ammonium aerosols over China: response to 2000–2015 emission changes of sulfur dioxide, nitrogen oxides, and ammonia journal January 2012
Source apportionment of carbon monoxide over India: a quantitative analysis using MOZART-4 journal October 2020
Atmospheric Chemistry and Physics: From Air Pollution to Climate Change journal September 1998
Transpacific transport of ozone pollution and the effect of recent Asian emission increases on air quality in North America: an integrated analysis using satellite, aircraft, ozonesonde, and surface observations journal January 2008
Asian emissions in 2006 for the NASA INTEX-B mission journal January 2009
Radiative forcing in the ACCMIP historical and future climate simulations journal January 2012
Historical (1750–2014) anthropogenic emissions of reactive gases and aerosols from the Community Emissions Data System (CEDS) journal January 2018
Technical note: On the use of nudging for aerosol-climate model intercomparison studies text January 2014
Projections of SO2, NOxand carbonaceous aerosols emissions in Asia journal September 2009

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