Chemical processing does not always impair heterogeneous ice nucleation of mineral dust particles

Sullivan, R. C.; Miñambres, Lorena; DeMott, Paul J.; Prenni, A. J.; Carrico, Christian M.; Levin, Ezra J. T.; Kreidenweis, Sonia M.

doi:10.1029/2010gl045540

Cited by 119 publications

(169 citation statements)

References 29 publications

Supporting

Mentioning

154

Contrasting

Unclassified

Order By: Relevance

“…As bare particles age in the atmosphere, they acquire liquid surface coatings by condensing soluble species and water vapour or by scavenging soluble particles, and they are thus transformed from deposition or contact nuclei into possible immersion nuclei. This transformation may dampen the ice-forming ability of some IN types at temperatures relevant for mixed-phase clouds (Cziczo et al, 2009;Eastwood et al, 2009;Chernoff and Bertram, 2010;Sullivan et al, 2010a). Specifically, organic coatings or oxidation by ozone tend to reduce the ice nucleation efficiency Möhler et al, 2005;, but this depends on the ozone levels (Kanji et al, 2013).…”

Section: Aerosol Radiation Clouds and Precipitationmentioning

confidence: 99%

Particulate matter, air quality and climate: lessons learned and future needs

et al. 2015

View full text Add to dashboard Cite

Abstract. The literature on atmospheric particulate matter (PM), or atmospheric aerosol, has increased enormously over the last 2 decades and amounts now to some 1500-2000 papers per year in the refereed literature. This is in part due to the enormous advances in measurement technologies, which have allowed for an increasingly accurate understanding of the chemical composition and of the physical properties of atmospheric particles and of their processes in the atmosphere. The growing scientific interest in atmospheric aerosol particles is due to their high importance for environmental policy. In fact, particulate matter constitutes one of the most challenging problems both for air quality and for climate change policies. In this context, this paper reviews the most recent results within the atmospheric aerosol sciences and the policy needs, which have driven much of the increase in monitoring and mechanistic research over the last 2 decades.The synthesis reveals many new processes and developments in the science underpinning climate-aerosol interactions and effects of PM on human health and the environment. However, while airborne particulate matter is responsible for globally important influences on premature human mortality, we still do not know the relative importance of the different chemical components of PM for these effects. Likewise, the magnitude of the overall effects of PM on climate remains highly uncertain. Despite the uncertainty there are many things that could be done to mitigate local and global problems of atmospheric PM. Recent analyses have shown that reducing black carbon (BC) emissions, using known control measures, would reduce global warming and delay the time when anthropogenic effects on global temperature would exceed 2 • C. Likewise, cost-effective control measures on ammonia, an important agricultural precursor gas for secondary inorganic aerosols (SIA), would reduce regional eutrophication and PM concentrations in large areas of Europe, China and the USA. Thus, there is much that could be done to reduce the effects of atmospheric PM on the climate and the health of the environment and the human population.A prioritized list of actions to mitigate the full range of effects of PM is currently undeliverable due to shortcomings in the knowledge of aerosol science; among the shortcomings, the roles of PM in global climate and the relative roles of Published by Copernicus Publications on behalf of the European Geosciences Union. 8218S. Fuzzi et al.: Particulate matter, air quality and climate different PM precursor sources and their response to climate and land use change over the remaining decades of this century are prominent. In any case, the evidence from this paper strongly advocates for an integrated approach to air quality and climate policies.

show abstract

Section: Aerosol Radiation Clouds and Precipitationmentioning

confidence: 99%

Particulate matter, air quality and climate: lessons learned and future needs

et al. 2015

View full text Add to dashboard Cite

show abstract

“…For comparison, we have also investigated the uptake of N 2 O 5 to ATD, which is essentially ground sand from the Arizona desert and which, although possessing a mineralogy that does not correspond closely to that of globally important sources of atmospheric mineral dust aerosols (e.g. Saharan or Asian dust) has often been used as a laboratory surrogate for investigations of heterogeneous reactivity (Crowley et al, 2010a) and cloud nucleation efficiency of mineral dust particles (Sullivan et al, 2010;Vlasenko et al, 2005). Though the uptake of N 2 O 5 onto mineral dust particles has been confirmed to lead to the formation of particulate nitrate (Seisel et al, 2005;Tang et al, 2012), it is still not clear why different mineral dust components show variable heterogeneous reactivity towards N 2 O 5 (Crowley et al, 2010a).…”

Section: J Tang Et Al: Heterogeneous Reaction Of N 2 O 5 With Ilmentioning

confidence: 99%

“…formation of particulate nitrate and/or sulphate) (Laskin et al, 2005;Matsuki et al, 2005;Mori et al, 2003;Sullivan et al, 2007) can modify their hygroscopicity and ability to serve as cloud condensation nuclei (Krueger et al, 2003;Shi et al, 2008;Sullivan et al, 2009;Tobo et al, 2010). Finally, heterogeneous processing can influence the ice nucleation properties of mineral dust particles (Cziczo et al, 2009;Kanji et al, 2013;Niedermeier et al, 2010;Sullivan et al, 2010). N 2 O 5 is formed in the reaction of NO 2 with NO 3 radicals, the latter formed by the oxidation of NO 2 by O 3 (Reaction R1) (Wayne et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous reaction of N<sub>2</sub>O<sub>5</sub> with illite and Arizona test dust particles

2014

View full text Add to dashboard Cite

Abstract. The heterogeneous reaction of N 2 O 5 with airborne illite and Arizona test dust (ATD) particles was investigated at room temperature and at different relative humidities using an atmospheric pressure aerosol flow tube. N 2 O 5 at concentrations in the range 8 to 24 × 10 12 molecule cm −3 was monitored using thermal-dissociation cavity ring-down spectroscopy at 662 nm. At zero relative humidity a large uptake coefficient of N 2 O 5 to illite was obtained, γ (N 2 O 5 ) = 0.09, which decreased to 0.04 as relative humidity was increased to 67 %. In contrast, the uptake coefficient derived for ATD is much lower (∼ 0.006) and displays a weaker (if any) dependence on relative humidity (0-67 %). Potential explanations are given for the significant differences between the uptake behaviour for ATD and illite and the results are compared with uptake coefficients for N 2 O 5 on other mineral surfaces.

show abstract

“…INAS densities were also derived from ice fractions f ice observed in studies investigating the deposition nucleation mode properties of monodisperse ATD particles (Koehler et al, 2010;Sullivan et al, 2010;Welti et al, 2009) with…”

Section: General Ice Nucleation Active Surface Density Approachmentioning

confidence: 99%

A new temperature- and humidity-dependent surface site density approach for deposition ice nucleation

et al. 2015

View full text Add to dashboard Cite

Abstract. Deposition nucleation experiments with ArizonaTest Dust (ATD) as a surrogate for mineral dusts were conducted at the AIDA cloud chamber at temperatures between 220 and 250 K. The influence of the aerosol size distribution and the cooling rate on the ice nucleation efficiencies was investigated. Ice nucleation active surface site (INAS) densities were calculated to quantify the ice nucleation efficiency as a function of temperature, humidity and the aerosol surface area concentration. Additionally, a contact angle parameterization according to classical nucleation theory was fitted to the experimental data in order to relate the ice nucleation efficiencies to contact angle distributions. From this study it can be concluded that the INAS density formulation is a very useful tool to describe the temperature-and humidity-dependent ice nucleation efficiency of ATD particles.Deposition nucleation on ATD particles can be described by a temperature-and relative-humidity-dependent INAS density function n s (T , S ice ) withwhere the temperature-and saturation-dependent function x therm is defined aswith the saturation ratio with respect to ice S ice > 1 and within a temperature range between 226 and 250 K. For lower temperatures, x therm deviates from a linear behavior with temperature and relative humidity over ice.Also, two different approaches for describing the time dependence of deposition nucleation initiated by ATD particles are proposed. Box model estimates suggest that the timedependent contribution is only relevant for small cooling rates and low number fractions of ice-active particles.

show abstract

Chemical processing does not always impair heterogeneous ice nucleation of mineral dust particles

Cited by 119 publications

References 29 publications

Particulate matter, air quality and climate: lessons learned and future needs

Particulate matter, air quality and climate: lessons learned and future needs

Heterogeneous reaction of N<sub>2</sub>O<sub>5</sub> with illite and Arizona test dust particles

A new temperature- and humidity-dependent surface site density approach for deposition ice nucleation

Contact Info

Product

Resources

About

Chemical processing does not always impair heterogeneous ice nucleation of mineral dust particles

Cited by 119 publications

References 29 publications

Particulate matter, air quality and climate: lessons learned and future needs

Particulate matter, air quality and climate: lessons learned and future needs

Heterogeneous reaction of N&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; with illite and Arizona test dust particles

A new temperature- and humidity-dependent surface site density approach for deposition ice nucleation

Contact Info

Product

Resources

About

Heterogeneous reaction of N<sub>2</sub>O<sub>5</sub> with illite and Arizona test dust particles