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Quantifying the Contributions of Aerosol- and Snow-Produced ClNO2 through Observations and 1D Modeling

Journal Article · · ACS Earth and Space Chemistry
 [1];  [2];  [3];  [2];  [4];  [2];  [5];  [2];  [2];  [6];  [6];  [7];  [2]
  1. Univ. of Michigan, Ann Arbor, MI (United States); National Center for Atmospheric Research (NCAR), Boulder, CO (United States)
  2. Univ. of Michigan, Ann Arbor, MI (United States)
  3. Univ. of Michigan, Ann Arbor, MI (United States); Hong Kong Polytechnic Univ. (Hong Kong)
  4. Univ. of Michigan, Ann Arbor, MI (United States); Paul Scherrer Inst. (PSI), Villigen (Switzerland); Zurich University of Applied Sciences (ZHAW) (Switzerland)
  5. National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States). Cooperative Inst. for Research in Environmental Sciences (CIRES)
  6. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States). Environmental Molecular Sciences Laboratory (EMSL)
  7. Pennsylvania State Univ., University Park, PA (United States)
Nitryl chloride (ClNO2) is a radical reservoir that forms and accumulates in the nocturnal atmospheric boundary layer influenced by combustion emissions and chloride (e.g., sea salt and road salt). Upon sunrise, ClNO2 rapidly photolyzes to generate highly reactive chlorine radicals (Cl) that affect the air quality by generating secondary air pollutants. Recent studies have shown road salt aerosols and saline snowpack to be sources of ClNO2 in the wintertime urban environment; however, the quantitative contributions of each chloride source are not known. In this study, we examine the vertically resolved contributions of aerosol particles and saline snowpack as sources of ClNO2 by using an observationally constrained snow–atmosphere coupled one-dimensional model applied to wintertime Kalamazoo, Michigan, U.S. Model simulations show that ClNO2 emitted from urban snowpack can be vertically transported throughout the entire atmospheric boundary layer and can be a significant source of ClNO2, contributing up to ~60% of the ClNO2 budget near the surface. Here, modeled snowpack ClNO2 emission rates were 6 (±7) times higher than the observationally derived emission rates, suggesting that not all snow chloride is available for reaction. ClNO2 production from both aerosol particles and snow emissions are required to best simulate the observed surface-level ClNO2. Using the traditional bulk parameterization for ClNO2 produced from particles significantly overestimated ClNO2 due to the assumption of having equivalent dinitrogen pentoxide (N2O5) uptake and chloride availability for the entire particle population. In comparison, the chemically resolved surface area-based parameterization slightly underestimated the observations and had uncertainties deriving from ClNO2 production from residential wood burning particles.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
National Oceanic and Atmospheric Administration (NOAA); National Science Foundation (NSF); USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
2337662
Report Number(s):
PNNL-SA--191621
Journal Information:
ACS Earth and Space Chemistry, Journal Name: ACS Earth and Space Chemistry Journal Issue: 12 Vol. 7; ISSN 2472-3452
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (105)

Measurements and modeling of the inorganic chemical composition of fine particulate matter and associated precursor gases in California's San Joaquin Valley during CalNex 2010: Inorganic PM & gases in the SJV journal June 2014
Importance of tropospheric ClNO 2 chemistry across the Northern Hemisphere journal June 2014
Evaluating N2O5 heterogeneous hydrolysis parameterizations for CalNex 2010 journal May 2016
Influence of oil and gas emissions on summertime ozone in the Colorado Northern Front Range: COLORADO O&G AND SUMMERTIME OZONE journal July 2016
A global model of tropospheric chlorine chemistry: Organic versus inorganic sources and impact on methane oxidation: Model of Tropospheric Cl Chemistry journal December 2016
Heterogeneous N 2 O 5 Uptake During Winter: Aircraft Measurements During the 2015 WINTER Campaign and Critical Evaluation of Current Parameterizations journal April 2018
Temperature dependence of heterogeneous uptake of N2O5 by ammonium sulfate aerosol journal July 2009
Chlorine activation within urban or power plant plumes: Vertically resolved ClNO 2 and Cl 2 measurements from a tall tower in a polluted continental setting : CHLORINE ACTIVATION WITHIN PLUMES journal August 2013
N 2 O 5 uptake coefficients and nocturnal NO 2 removal rates determined from ambient wintertime measurements : WINTERTIME N journal August 2013
Theoretical Estimation of Biologically Effective UV Radiation at the Earth’s Surface book January 1997
Size dependent partitioning of organic material: evidence for the formation of organic coatings on aqueous aerosols journal May 2007
On street observations of particulate matter movement and dispersion due to traffic on an urban road journal June 2008
Secondary aerosol formation from the oxidation of toluene by chlorine atoms journal October 2008
Characterization and heterogeneity of coarse particles across an urban area journal January 2012
Road salt emissions: A comparison of measurements and modelling using the NORTRIP road dust emission model journal September 2016
Observations of N 2 O 5 and ClNO 2 at a polluted urban surface site in North China: High N 2 O 5 uptake coefficients and low ClNO 2 product yields journal May 2017
Increases in wintertime PM2.5 sodium and chloride linked to snowfall and road salt application journal March 2018
Eight-year (2007–2014) trends in ambient fine particulate matter (PM2.5) and its chemical components in the Capital Region of Alberta, Canada journal May 2016
Ozone weekend effect in cities: Deep insights for urban air pollution control journal December 2020
Nighttime NO loss and ClNO2 formation in the residual layer of a polluted region: Insights from field measurements and an iterative box model journal May 2018
The Role of Hydrates, Competing Chemical Constituents, and Surface Composition on ClNO2 Formation journal February 2021
Production of N 2 O 5 and ClNO 2 through Nocturnal Processing of Biomass-Burning Aerosol journal December 2017
ClNO 2 Production from N 2 O 5 Uptake on Saline Playa Dusts: New Insights into Potential Inland Sources of ClNO 2 journal May 2019
Springtime Nitrogen Oxide-Influenced Chlorine Chemistry in the Coastal Arctic journal June 2019
Gas- and Particle-Phase Products from the Chlorine-Initiated Oxidation of Polycyclic Aromatic Hydrocarbons journal November 2015
Reacto-Diffusive Length of N 2 O 5 in Aqueous Sulfate- and Chloride-Containing Aerosol Particles journal February 2016
Observation of Road Salt Aerosol Driving Inland Wintertime Atmospheric Chlorine Chemistry journal May 2020
Urban Snowpack ClNO 2 Production and Fate: A One-Dimensional Modeling Study journal June 2020
Observation of N2O5 Deposition and ClNO2 Production on the Saline Snowpack journal April 2021
Production and Release of Molecular Bromine and Chlorine from the Arctic Coastal Snowpack journal April 2017
Physical Characterization of Frozen Saltwater Solutions Using Raman Microscopy journal May 2018
HONO, Particulate Nitrite, and Snow Nitrite at a Midlatitude Urban Site during Wintertime journal March 2019
Sulfate and Carboxylate Suppress the Formation of ClNO2 at Atmospheric Interfaces journal July 2019
Physical Characterization of Frozen Aqueous Solutions Containing Sodium Chloride and Humic Acid at Environmentally Relevant Temperatures journal January 2020
Interactions of Atmospheric Trace Gases with Ice Surfaces:  Adsorption and Reaction journal December 2003
Receptor Modeling of Toronto PM2.5 Characterized by Aerosol Laser Ablation Mass Spectrometry journal September 2004
Long-Term Measurements of NO 3 Radical at a Semiarid Urban Site: 2. Seasonal Trends and Loss Mechanisms journal August 2010
Observation of ClNO 2 in a Mid-Continental Urban Environment journal October 2011
Single-Particle SEM-EDX Analysis of Iron-Containing Coarse Particulate Matter in an Urban Environment: Sources and Distribution of Iron within Cleveland, Ohio journal April 2012
Nitryl Chloride and Molecular Chlorine in the Coastal Marine Boundary Layer journal April 2012
Study of the Uptake of N2O5 by Water and NaCl Solutions journal September 1994
NMR Investigation of the Quasi-Brine Layer in Ice/Brine Mixtures journal October 2002
N 2 O 5 Reaction on Submicron Sea Salt Aerosol:  Kinetics, Products, and the Effect of Surface Active Organics journal November 2005
Release of Gas-Phase Halogens by Photolytic Generation of OH in Frozen Halide−Nitrate Solutions: An Active Halogen Formation Mechanism? journal June 2010
Can We Model Snow Photochemistry? Problems with the Current Approaches journal May 2013
N 2 O 5 Reactive Uptake on Aqueous Sulfuric Acid Solutions Coated with Branched and Straight-Chain Insoluble Organic Surfactants journal March 2008
Heterogeneous Interconversion Reactions of BrNO2, ClNO2, Br2, and Cl2 journal February 1998
Influence of an organic coating on the reactivity of aqueous aerosols probed by the heterogeneous hydrolysis of N 2 O 5 : ORGANIC COATINGS AND AEROSOL REACTIVITY journal June 2003
Reactive uptake coefficients for N 2 O 5 determined from aircraft measurements during the Second Texas Air Quality Study: Comparison to current model parameterizations journal January 2009
A comparison of Arctic BrO measurements by chemical ionization mass spectrometry and long path-differential optical absorption spectroscopy journal January 2011
Significant concentrations of nitryl chloride observed in rural continental Europe associated with the influence of sea salt chloride and anthropogenic emissions: ClNO journal May 2012
The sea breeze/land breeze circulation in Los Angeles and its influence on nitryl chloride production in this region: CLNO journal November 2012
Production of Secondary Organic Aerosol During Aging of Biomass Burning Smoke From Fresh Fuels and Its Relationship to VOC Precursors journal March 2019
ClNO 2 Yields From Aircraft Measurements During the 2015 WINTER Campaign and Critical Evaluation of the Current Parameterization journal November 2018
The reaction probabilities of ClONO 2 and N 2 O 5 on polar stratospheric cloud materials journal January 1991
Reaction of N 2 O 5 on tropospheric aerosols: Impact on the global distributions of NO x , O 3 , and OH journal April 1993
Fate of ClNO2 over aqueous solutions containing iodide journal June 1995
Production and decay of ClNO 2 from the reaction of gaseous N 2 O 5 with NaCl solution: Bulk and aerosol experiments journal February 1997
Formation of chemically active chlorine compounds by reactions of atmospheric NaCl particles with gaseous N2O5 and ClONO2 journal January 1989
A large atomic chlorine source inferred from mid-continental reactive nitrogen chemistry journal March 2010
High levels of nitryl chloride in the polluted subtropical marine boundary layer journal April 2008
Photochemical production of molecular bromine in Arctic surface snowpacks journal April 2013
Effects of halogens on European air-quality journal January 2017
N 2 O 5 reactive uptake kinetics and chlorine activation on authentic biomass-burning aerosol journal January 2019
Hydrolysis of N2O5 on sub-micron sulfate aerosols journal January 2003
N2O5 hydrolysis on sub-micron organic aerosols: the effect of relative humidity, particle phase, and particle size journal January 2003
Characterization and optimization of an online system for the simultaneous measurement of atmospheric water-soluble constituents in the gas and particle phases journal January 2012
Gas-Phase Tropospheric Chemistry of Volatile Organic Compounds: 1. Alkanes and Alkenes journal March 1997
An advanced modeling study on the impacts and atmospheric implications of multiphase dimethyl sulfide chemistry journal September 2016
Active molecular iodine photochemistry in the Arctic journal September 2017
Direct detection of atmospheric atomic bromine leading to mercury and ozone depletion journal June 2019
An Algorithm for Combining Electrical Mobility and Aerodynamic Size Distributions Data when Measuring Ambient Aerosol Special Issue of Aerosol Science and Technology on Findings from the Fine Particulate Matter Supersites Program journal December 2004
Normal Atmosphere: Large Radical and Formaldehyde Concentrations Predicted journal July 1971
Ubiquity of ClNO 2 in the urban boundary layer of Calgary, Alberta, Canada journal April 2016
Multivariate analysis of metals content in urban snow near traffic lanes in Novi Sad, Serbia journal January 2014
Modeling chemistry in and above snow at Summit, Greenland – Part 1: Model description and results journal January 2011
Deposition of dinitrogen pentoxide, N2O5, to the snowpack at high latitudes journal May 2011
Temperature dependent halogen activation by N2O5 reactions on halide-doped ice surfaces journal June 2012
Halogen activation via interactions with environmental ice and snow in the polar lower troposphere and other regions journal January 2012
Modeling chemistry in and above snow at Summit, Greenland – Part 2: Impact of snowpack chemistry on the oxidation capacity of the boundary layer journal July 2012
Photochemical chlorine and bromine activation from artificial saline snow journal January 2013
A review of air–ice chemical and physical interactions (AICI): liquids, quasi-liquids, and solids in snow journal January 2014
Air–snowpack exchange of bromine, ozone and mercury in the springtime Arctic simulated by the 1-D model PHANTAS – Part 1: In-snow bromine activation and its impact on ozone journal January 2014
Air–snowpack exchange of bromine, ozone and mercury in the springtime Arctic simulated by the 1-D model PHANTAS – Part 2: Mercury and its speciation journal April 2014
Reactive uptake of N 2 O 5 to internally mixed inorganic and organic particles: the role of organic carbon oxidation state and inferred organic phase separations journal January 2014
The fate of NOx emissions due to nocturnal oxidation at high latitudes: 1-D simulations and sensitivity experiments journal July 2014
Estimating N 2 O 5 uptake coefficients using ambient measurements of NO 3 , N 2 O 5 , ClNO 2 and particle-phase nitrate journal January 2016
Impacts of heterogeneous uptake of dinitrogen pentoxide and chlorine activation on ozone and reactive nitrogen partitioning: improvement and application of the WRF-Chem model in southern China journal December 2016
Significant concentrations of nitryl chloride sustained in the morning: investigations of the causes and impacts on ozone production in a polluted region of northern China journal December 2016
Fast heterogeneous N 2 O 5 uptake and ClNO 2 production in power plant and industrial plumes observed in the nocturnal residual layer over the North China Plain journal January 2017
A new mechanism for atmospheric mercury redox chemistry: implications for the global mercury budget journal January 2017
Heterogeneous N 2 O 5 uptake coefficient and production yield of ClNO 2 in polluted northern China: roles of aerosol water content and chemical composition journal January 2018
Low levels of nitryl chloride at ground level: nocturnal nitrogen oxides in the Lower Fraser Valley of British Columbia journal May 2018
Integration of airborne and ground observations of nitryl chloride in the Seoul metropolitan area and the implications on regional oxidation capacity during KORUS-AQ 2016 journal January 2019
The role of chlorine in global tropospheric chemistry journal January 2019
pH-dependent production of molecular chlorine, bromine, and iodine from frozen saline surfaces journal January 2019
Urban inland wintertime N2O5 and ClNO2 influenced by snow-covered ground, air turbulence, and precipitation journal February 2022
The origin of sea salt in snow on Arctic sea ice and in coastal regions journal January 2004
The effect of varying levels of surfactant on the reactive uptake of N2O5 to aqueous aerosol journal January 2006
An overview of snow photochemistry: evidence, mechanisms and impacts journal January 2007
Snow physics as relevant to snow photochemistry journal January 2008
Parameterization of N 2 O 5 reaction probabilities on the surface of particles containing ammonium, sulfate, and nitrate journal January 2008
The role of ice in N2O5 heterogeneous hydrolysis at high latitudes journal December 2008
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
Chlorine activation by N 2 O 5 : simultaneous, in situ detection of ClNO 2 and N 2 O 5 by chemical ionization mass spectrometry journal January 2009