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Title: Sensitivity of aerosol optical properties to the aerosol size distribution over central Europe and the Mediterranean Basin using the WRF-Chem v.3.9.1.1 coupled model

Journal Article · · Geoscientific Model Development (Online)

The size distribution of atmospheric aerosols plays a key role for understanding and quantifying the uncertainties related to aerosol–radiation and aerosol–cloud interactions. These interactions ultimately depend on the size distribution through optical properties (such as aerosol optical depth, AOD) or cloud microphysical properties. Hence, the main objective of this contribution is to disentangle the impact of the representation of aerosol size distribution on aerosol optical properties over central Europe, particularly over the Mediterranean Basin, during a summertime aerosol episode. To fulfill this objective, a sensitivity test has been conducted using the coupled chemistry–meteorology model WRF-Chem (Weather Research Forecast model coupled with Chemistry). The test modified the parameters defining a lognormal size distribution (geometric diameter and standard deviation) by 10 %, 20 %, and 50 %. Results reveal that the reduction in the standard deviation of the accumulation mode leads to the largest impacts on AOD due to a transfer of particles from the accumulation mode to the coarse mode. A reduction in the geometric diameter of the accumulation mode also has an influence on AOD representation since particles in this mode are assumed to be smaller. In addition, an increase in the geometric diameter of the coarse mode produces a redistribution through the total size distribution by relocating particles from the finer modes to the coarse.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE; Spanish Ministry of the Economy and Competitiveness; European Regional Development Fund
Grant/Contract Number:
AC05-76RL01830; CGL2017-87921-R; EST18/00718
OSTI ID:
1735596
Report Number(s):
PNNL-SA-158300
Journal Information:
Geoscientific Model Development (Online), Vol. 13, Issue 12; ISSN 1991-9603
Publisher:
European Geosciences UnionCopyright Statement
Country of Publication:
United States
Language:
English

References (81)

Effect of aerosol size distribution changes on AOD, CCN and cloud droplet concentration: Case studies from Erfurt and Melpitz, Germany: AEROSOL EFFECT ON AOD AND CLOUDS journal April 2012
Prediction of cloud droplet number in a general circulation model journal September 1997
An assessment of aerosol optical properties from remote-sensing observations and regional chemistry–climate coupled models over Europe journal January 2018
A New Vertical Diffusion Package with an Explicit Treatment of Entrainment Processes journal September 2006
Evaluating the representation of aerosol optical properties using an online coupled model over the Iberian Peninsula journal January 2017
A new mechanism for regional atmospheric chemistry modeling journal November 1997
Toward a minimal representation of aerosols in climate models: description and evaluation in the Community Atmosphere Model CAM5 journal January 2012
Absorption of visible radiation in atmosphere containing mixtures of absorbing and nonabsorbing particles journal January 1981
The AFWA dust emission scheme for the GOCART aerosol model in WRF-Chem v3.8.1 journal January 2019
Fully coupled “online” chemistry within the WRF model journal December 2005
Sensitivity Analysis of Chemical Mechanisms in the WRF-Chem Model in Reconstructing Aerosol Concentrations and Optical Properties in the Tibetan Plateau journal January 2018
An operational system for the assimilation of the satellite information on wild-land fires for the needs of air quality modelling and forecasting journal January 2009
Quantifying aerosol size distributions and their temporal variability in the Southern Great Plains, USA journal January 2019
Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project journal January 2011
Sources and distributions of dust aerosols simulated with the GOCART model journal September 2001
Radiative impact of mineral dust on monsoon precipitation variability over West Africa journal January 2011
General circulation model assessment of the sensitivity of direct climate forcing by anthropogenic sulfate aerosols to aerosol size and chemistry journal January 1995
Uncertainties in assessing radiative forcing by mineral dust journal November 1998
Aerosol–cloud–precipitation interactions. Part 1. The nature and sources of cloud-active aerosols journal July 2008
Aerosol size distribution models based on in situ measurements journal March 1997
The impact of dust storms on the Arabian Peninsula and the Red Sea journal January 2015
WRF-Chem simulations of a typical pre-monsoon dust storm in northern India: influences on aerosol optical properties and radiation budget journal January 2014
EDF Statistics for Goodness of Fit and Some Comparisons journal September 1974
Properties of the Log-Normal Particle Size Distribution journal January 1994
Mineral dust aerosol size distribution change during atmospheric transport journal January 2003
Uncertainty in modeling dust mass balance and radiative forcing from size parameterization journal January 2013
Dust modeling over Saudi Arabia using WRF-Chem: March 2009 severe dust case journal October 2015
The tropospheric degradation of isoprene: an updated module for the regional atmospheric chemistry mechanism journal April 2003
The ERA-Interim reanalysis: configuration and performance of the data assimilation system journal April 2011
Summertime re-circulations of air pollutants over the north-eastern Iberian coast observed from systematic EARLINET lidar measurements in Barcelona journal August 2004
Perturbation of the European free troposphere aerosol by North American forest fire plumes during the ICARTT-ITOP experiment in summer 2004 journal January 2007
The aerosol size distribution of Los Angeles smog journal April 1972
Uncertainties of wild-land fires emission in AQMEII phase 2 case study journal August 2015
Photooxidant dynamics in the Mediterranean basin in summer: Results from European research projects journal April 1997
Modeling of particle size distribution and its influence on the radiative properties of mineral dust aerosol journal August 1996
Aerosol-radiation interaction in atmospheric models: Idealized sensitivity study of simulated short-wave direct radiative effects to particle microphysical properties journal January 2018
The Fire INventory from NCAR (FINN): a high resolution global model to estimate the emissions from open burning journal January 2011
The spatial distribution of mineral dust and its shortwave radiative forcing over North Africa: modeling sensitivities to dust emissions and aerosol size treatments journal January 2010
Climate Forcing by Anthropogenic Aerosols journal January 1992
Emission of trace gases and aerosols from biomass burning journal December 2001
A scale and aerosol aware stochastic convective parameterization for weather and air quality modeling journal January 2014
Saharan Dust Modeling Over the Mediterranean Basin and Central Europe: Does the Resolution Matter? journal November 2019
Radiative forcing by long-lived greenhouse gases: Calculations with the AER radiative transfer models journal January 2008
Direct and semi-direct aerosol radiative effect on the Mediterranean climate variability using a coupled regional climate system model journal June 2014
Global sensitivity experiments of the radiative forcing due to mineral aerosols journal August 2001
Fast-J: Accurate Simulation of In- and Below-Cloud Photolysis in Tropospheric Chemical Models journal January 2000
Analysis of a Severe Dust Storm Event over China: Application of the WRF-Dust Model journal January 2011
Modeling dust sources, transport, and radiative effects at different altitudes over the Tibetan Plateau journal January 2020
Impact of aerosol microphysical properties on mass scattering cross sections journal October 2017
Variability in regional background aerosols within the Mediterranean journal January 2009
Wavelength dependence of the optical depth of biomass burning, urban, and desert dust aerosols journal December 1999
Aerosol number size distributions from 3 to 500 nm diameter in the arctic marine boundary layer during summer and autumn journal January 1996
Understanding and improving model representation of aerosol optical properties for a Chinese haze event measured during KORUS-AQ journal January 2020
Aerosol optical properties over Europe: an evaluation of the AQMEII Phase 3 simulations against satellite observations journal January 2019
Aerosol optical properties in the southeastern United States in summer – Part 2: Sensitivity of aerosol optical depth to relative humidity and aerosol parameters journal January 2016
Intercomparison of models representing direct shortwave radiative forcing by sulfate aerosols journal July 1998
Estimates of the direct and indirect radiative forcing due to tropospheric aerosols: A review journal November 2000
Light scattering by dust and anthropogenic aerosol at a remote site in the Negev desert, Israel journal January 2002
A new lumped structure photochemical mechanism for large-scale applications journal December 1999
Size distribution and hygroscopic properties of aerosol particles from dry-season biomass burning in Amazonia journal January 2006
High‐resolution regional modeling of summertime transport and impact of African dust over the Red Sea and Arabian Peninsula journal June 2016
Inclusion of ash and SO2 emissions from volcanic eruptions in WRF-Chem: development and some applications journal January 2013
Parameterization of surface resistances to gaseous dry deposition in regional-scale numerical models journal January 1989
The direct effect of aerosols on solar radiation over the broader Mediterranean basin journal January 2012
One-Year data of Submicron size Modes of Tropospheric Background Aerosol in Southern Finland journal May 2000
A scaling theory for the size distribution of emitted dust aerosols suggests climate models underestimate the size of the global dust cycle journal December 2010
One year boundary layer aerosol size distribution data from five nordic background stations journal January 2003
Thirty years of in situ stratospheric aerosol size distribution measurements from Laramie, Wyoming (41°N), using balloon-borne instruments journal January 2003
Technical Note: Evaluation of the WRF-Chem "Aerosol Chemical to Aerosol Optical Properties" Module using data from the MILAGRO campaign journal January 2010
Added Value of Aerosol-Cloud Interactions for Representing Aerosol Optical Depth in an Online Coupled Climate-Chemistry Model over Europe journal April 2020
Absorption and Scattering of Light by Small Particles book April 1998
Impact of elevated aerosol layer on the cloud macrophysical properties prior to monsoon onset journal May 2013
Diurnal variation of aerosol optical depth and PM2.5 in South Korea: a synthesis from AERONET, satellite (GOCI), KORUS-AQ observation, and the WRF-Chem model journal January 2018
Impact of Cloud Microphysics on the Development of Trailing Stratiform Precipitation in a Simulated Squall Line: Comparison of One- and Two-Moment Schemes journal March 2009
Evaluation of aerosol direct radiative forcing in MIRAGE journal March 2001
The physical characteristics of sulfur aerosols journal January 1978
Climate change hot-spots journal January 2006
Long-term observations of aerosol size distributions in semi-clean and polluted savannah in South Africa journal January 2013
Modal aerosol dynamics model for Europe journal September 1998
WRF-Chem model sensitivity to chemical mechanisms choice in reconstructing aerosol optical properties journal August 2015
Estimates of global terrestrial isoprene emissions using MEGAN (Model of Emissions of Gases and Aerosols from Nature) journal January 2006

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