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

Title: Metrics to quantify the importance of mixing state for CCN activity

Journal Article · · Atmospheric Chemistry and Physics (Online)
ORCiD logo [1];  [1]; ORCiD logo [2]; ORCiD logo [3]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Atmospheric Sciences and Global Change Division
  2. University of Illinois at Urbana–Champaign, Urbana (United States). Department of Mechanical Science and Engineering
  3. University of Illinois at Urbana–Champaign, Urbana (United States). Department of Atmospheric Sciences

It is commonly assumed that models are more prone to errors in predicted cloud condensation nuclei (CCN) concentrations when the aerosol populations are externally mixed. In this work we investigate this assumption by using the mixing state index (χ) proposed by Riemer and West (2013) to quantify the degree of external and internal mixing of aerosol populations. We combine this metric with particle-resolved model simulations to quantify error in CCN predictions when mixing state information is neglected, exploring a range of scenarios that cover different conditions of aerosol aging. We show that mixing state information does indeed become unimportant for more internally mixed populations, more precisely for populations with χ larger than 75 %. For more externally mixed populations (χ below 20 %) the relationship of χ and the error in CCN predictions is not unique and ranges from lower than -40 % to about 150 %, depending on the underlying aerosol population and the environmental supersaturation. We explain the reasons for this behavior with detailed process analyses.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-76RL01830; SC0011771
OSTI ID:
1367378
Report Number(s):
PNNL-SA-122612; KP1701000
Journal Information:
Atmospheric Chemistry and Physics (Online), Vol. 17, Issue 12; ISSN 1680-7324
Publisher:
European Geosciences UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

References (62)

Weighted Flow Algorithms (WFA) for stochastic particle coagulation journal September 2011
Modeling the evolution of aerosol particles in a ship plume using PartMC-MOSAIC journal January 2014
Black carbon mixing state impacts on cloud microphysical properties: Effects of aerosol plume and environmental conditions: IMPACTS OF BC MIXING STATE ON CLOUDS journal May 2016
Explaining variance in black carbon's aging timescale journal January 2015
Methodology for quantifying the volatile mixing state of an aerosol journal May 2016
The effect of physical and chemical aerosol properties on warm cloud droplet activation journal January 2006
Strong radiative heating due to the mixing state of black carbon in atmospheric aerosols journal February 2001
Quantifying aerosol mixing state with entropy and diversity measures journal January 2013
Hygroscopic properties of aerosol particles at high relative humidity and their diurnal variations in the North China Plain journal January 2011
Simulating the evolution of soot mixing state with a particle‐resolved aerosol model journal January 2009
In-situ measurements of the mixing state and optical properties of soot with implications for radiative forcing estimates journal July 2009
Binning for Efficient Stochastic Multiscale Particle Simulations journal January 2013
CCN closure study: Effects of aerosol chemical composition and mixing state journal January 2015
The aerosol-climate model ECHAM5-HAM journal January 2005
MATRIX (Multiconfiguration Aerosol TRacker of mIXing state): an aerosol microphysical module for global atmospheric models journal January 2008
CCN predictions using simplified assumptions of organic aerosol composition and mixing state: a synthesis from six different locations journal January 2010
Modeling the formation of secondary organic aerosol within a comprehensive air quality model system journal November 2001
Analysis of aerosol interactions with numerical techniques for solving coagulation, nucleation, condensation, dissolution, and reversible chemistry among multiple size distributions journal January 2002
The MESSy aerosol submodel MADE3 (v2.0b): description and a box model test journal January 2014
Description and evaluation of GLOMAP-mode: a modal global aerosol microphysics model for the UKCA composition-climate model journal January 2010
Inference of population structure using multilocus genotype data: dominant markers and null alleles: TECHNICAL ARTICLE journal March 2007
Description and evaluation of a new four-mode version of the Modal Aerosol Module (MAM4) within version 5.3 of the Community Atmosphere Model journal January 2016
Chemical imaging of ambient aerosol particles: Observational constraints on mixing state parameterization journal September 2015
A new method for multicomponent activity coefficients of electrolytes in aqueous atmospheric aerosols journal January 2005
Single particle diversity and mixing state measurements journal January 2014
A single parameter representation of hygroscopic growth and cloud condensation nucleus activity journal January 2007
Estimating black carbon aging time-scales with a particle-resolved aerosol model journal January 2010
Quantitative determination of carbonaceous particle mixing state in Paris using single-particle mass spectrometer and aerosol mass spectrometer measurements journal January 2013
MADE-in: a new aerosol microphysics submodel for global simulation of insoluble particles and their mixing state journal January 2011
Hygroscopic properties of carbon and diesel soot particles journal August 1997
Evaluation of black carbon estimations in global aerosol models journal January 2009
Characterization and parameterization of aerosol cloud condensation nuclei activation under different pollution conditions journal April 2016
Industrial Structure and the Sources of Agglomeration Economies: Evidence from Manufacturing Plant Production: Industrial Structure and Agglomeration journal March 2013
A computationally efficient Multicomponent Equilibrium Solver for Aerosols (MESA) journal January 2005
Model for Simulating Aerosol Interactions and Chemistry (MOSAIC) journal January 2008
Characterization of the Single Particle Mixing State of Individual Ship Plume Events Measured at the Port of Los Angeles journal March 2010
A new lumped structure photochemical mechanism for large-scale applications journal December 1999
Local and Regional Components of Aerosol in a Heavily Trafficked Street Canyon in Central London Derived from PMF and Cluster Analysis of Single-Particle ATOFMS Spectra journal February 2015
Improving our fundamental understanding of the role of aerosol−cloud interactions in the climate system journal May 2016
Entropy and Information in Neural Spike Trains journal January 1998
The importance of aerosol mixing state and size-resolved composition on CCN concentration and the variation of the importance with atmospheric aging of aerosols journal January 2010
Droplet activation properties of organic aerosols observed at an urban site during CalNex-LA: CCN ACTIVITY OF ORGANIC AEROSOLS journal April 2013
Impacts of black carbon mixing state on black carbon nucleation scavenging: Insights from a particle-resolved model: PARTMC-MOSAIC BLACK CARBON MIXING STATE journal December 2012
When is cloud condensation nuclei activity sensitive to particle characteristics at emission?: CCN ACTIVITY OF PRIMARY AEROSOL journal December 2013
Hygroscopicity distribution concept for measurement data analysis and modeling of aerosol particle mixing state with regard to hygroscopic growth and CCN activation journal January 2010
Evolution and Measurement of Species Diversity journal May 1972
Single Particle Characterization of Ultrafine and Accumulation Mode Particles from Heavy Duty Diesel Vehicles Using Aerosol Time-of-Flight Mass Spectrometry journal June 2006
A three-dimensional sectional representation of aerosol mixing state for simulating optical properties and cloud condensation nuclei: Aerosol Mixing State Representation journal May 2016
Aerosol Properties and Processes: A Path from Field and Laboratory Measurements to Global Climate Models journal July 2007
Particle-resolved simulation of aerosol size, composition, mixing state, and the associated optical and cloud condensation nuclei activation properties in an evolving urban plume journal January 2010
MATRIX (Multiconfiguration Aerosol TRacker of mIXing state): an aerosol microphysical module for global atmospheric models journal January 2008
Evaluation of black carbon estimations in global aerosol models journal January 2009
CCN predictions using simplified assumptions of organic aerosol composition and mixing state: a synthesis from six different locations journal January 2009
Functional Groups of Metazoan Parasites of the Dusky Flounder (Syacium papillosum) as Bioindicators of Environmental Health of the Yucatan Shelf journal April 2021
Quantitative determination of carbonaceous particle mixing state in Paris using single-particle mass spectrometer and aerosol mass spectrometer measurements text January 2013
MADE-in : a new aerosol microphysics submodel for global simulation of insoluble particles and their mixing state text January 2011
The effect of physical and chemical aerosol properties on warm cloud droplet activation text January 2006
Description and evaluation of GLOMAP-mode: a modal global aerosol microphysics model for the UKCA composition-climate model journal January 2010
Single particle diversity and mixing state measurements other January 2014
Simulating the evolution of soot mixing state with a particle-resolved aerosol model text January 2008
Estimating black carbon aging time-scales with a particle-resolved aerosol model preprint January 2009
A single parameter representation of hygroscopic growth and cloud condensation nucleus activity journal January 2006

Cited By (6)

Effects of Aerosols on the Precipitation of Convective Clouds: A Case Study in the Yangtze River Delta of China journal July 2019
Aerosol mixing state matters for particles deposition in human respiratory system journal June 2018
Aerosol mixing state revealed by transmission electron microscopy pertaining to cloud formation and human airway deposition journal July 2019
A Review of the Representation of Aerosol Mixing State in Atmospheric Models journal March 2019
Machine Learning to Predict the Global Distribution of Aerosol Mixing State Metrics journal January 2018
Quantifying Impacts of Aerosol Mixing State on Nucleation-Scavenging of Black Carbon Aerosol Particles journal January 2018