Ice nucleating particles at a coastal marine boundary layer site: correlations with aerosol type and meteorological conditions

Mason, R. H.; Si, Meng; Li, J.; Chou, C.; Dickie, Ryan; Toom-Sauntry, D.; Pöhlker, Christopher; Yakobi-Hancock, Jacqueline; Ladino, Luis A.; Jones, Keith; Leaitch, W. R.; Schiller, C. L.; Abbatt, Jonathan P. D.; Huffman, J. A.; Bertram, Allan K.

doi:10.5194/acp-15-12547-2015

Cited by 83 publications

(75 citation statements)

References 163 publications

(206 reference statements)

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“…Ice nucleating particles (INPs) are generally thought to represent a small subsection of total ambient particles. INPs have surface characteristics that allow for them to cause freezing at warmer temperatures or lower supersaturations (heterogeneous nucleation) than would normally be seen via homogenous nucleation [13,14]. While some modeling studies have pointed towards PBAP as being unimportant for ice nucleation on a global and annual scale, this may not be the case on regional and seasonal scales, especially if high levels of biological particles are present and other types of INPs are low [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Review: The Use of Real-Time Fluorescence Instrumentation to Monitor Ambient Primary Biological Aerosol Particles (PBAP)

Fennelly

Sewell²,

Prentice

et al. 2017

Atmosphere

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Primary biological aerosol particles (PBAP) encompass many particle types that are derived from several biological kingdoms. These aerosol particles can be composed of both whole living units such as pollen, bacteria, and fungi, as well as from mechanically formed particles, such as plant debris. They constitute a significant proportion of the overall atmospheric particle load and have been linked with adverse health issues and climatic effects on the environment. Traditional methods for their analysis have focused on the direct capture of PBAP before subsequent laboratory analysis. These analysis types have generally relied on direct optical microscopy or incubation on agar plates, followed by time-consuming microbiological investigation. In an effort to address some of these deficits, real-time fluorescence monitors have come to prominence in the analysis of PBAP. These instruments offer significant advantages over traditional methods, including the measurement of concentrations, as well as the potential to simultaneously identify individual analyte particles in real-time. Due to the automated nature of these measurements, large data sets can be collected and analyzed with relative ease. This review seeks to highlight and discuss the extensive literature pertaining to the most commonly used commercially available real-time fluorescence monitors (WIBS, UV-APS and BioScout). It discusses the instruments operating principles, their limitations and advantages, and the various environments in which they have been deployed. The review provides a detailed examination of the ambient fluorescent aerosol particle concentration profiles that are obtained by these studies, along with the various strategies adopted by researchers to analyze the substantial data sets the instruments generate. Finally, a brief reflection is presented on the role that future instrumentation may provide in revolutionizing this area of atmospheric research.

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Section: Introductionmentioning

confidence: 99%

Review: The Use of Real-Time Fluorescence Instrumentation to Monitor Ambient Primary Biological Aerosol Particles (PBAP)

Fennelly

Sewell²,

Prentice

et al. 2017

Atmosphere

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“…DeMott et al (2010) It should be emphasized that this INP parameterization shows an uncertainty in the range of a factor of 5-10 as recent observation indicate (McCluskey et al, 2014;Mason et al, 2015;Taylor et al, 2016a, b). The most obvious reason for the remaining uncertainty is that the specific aerosol composition, i.e., the mixture of aerosol types (the exact amount of pollen, dust, soot, organic material, sulfates, etc.…”

Section: Estimation Of N Inp From N 250drymentioning

confidence: 99%

Potential of polarization lidar to provide profiles of CCN- and INP-relevant aerosol parameters

Mamouri¹,

Ansmann²

2016

Atmos. Chem. Phys.

141

184

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Abstract. We investigate the potential of polarization lidar to provide vertical profiles of aerosol parameters from which cloud condensation nucleus (CCN) and ice nucleating particle (INP) number concentrations can be estimated. We show that height profiles of particle number concentrations n 50,dry considering dry aerosol particles with radius > 50 nm (reservoir of CCN in the case of marine and continental non-desert aerosols), n 100,dry (particles with dry radius > 100 nm, reservoir of desert dust CCN), and of n 250,dry (particles with dry radius > 250 nm, reservoir of favorable INP), as well as profiles of the particle surface area concentration s dry (used in INP parameterizations) can be retrieved from lidar-derived aerosol extinction coefficients σ with relative uncertainties of a factor of 1.5-2 in the case of n 50,dry and n 100,dry and of about 25-50 % in the case of n 250,dry and s dry . Of key importance is the potential of polarization lidar to distinguish and separate the optical properties of desert aerosols from non-desert aerosol such as continental and marine particles. We investigate the relationship between σ , measured at ambient atmospheric conditions, and n 50,dry for marine and continental aerosols, n 100,dry for desert dust particles, and n 250,dry and s dry for three aerosol types (desert, non-desert continental, marine) and for the main lidar wavelengths of 355, 532, and 1064 nm. Our study is based on multiyear Aerosol Robotic Network (AERONET) photometer observations of aerosol optical thickness and column-integrated particle size distribution at Leipzig, Germany, and Limassol, Cyprus, which cover all realistic aerosol mixtures. We further include AERONET data from field campaigns in Morocco, Cabo Verde, and Barbados, which provide pure dust and pure marine aerosol scenarios. By means of a simple CCN parameterization (with n 50,dry or n 100,dry as input) and available INP parameterization schemes (with n 250,dry and s dry as input) we finally compute profiles of the CCN-relevant particle number concentration n CCN and the INP number concentration n INP . We apply the method to a lidar observation of a heavy dust outbreak crossing Cyprus and a case dominated by continental aerosol pollution.

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“…Since then, biological INPs have been shown to be widespread in the air, clouds and precipitation, from tropics to polar regions (e.g., [6,[18][19][20]), and over oceans [21][22][23]. Water isotope ratio measurements in snowfall showed that biological INPs are precipitated more efficiently than other analyzed.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric Processing and Variability of Biological Ice Nucleating Particles in Precipitation at Opme, France

et al. 2017

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Atmospheric ice nucleating particles (INPs) contribute to initiate precipitation. In particular, biological INPs act at warmer temperatures than other types of particles (>−10 • C) therefore potentially defining precipitation distribution. Here, in order to identify potential environmental drivers in the distribution and fate of biological INPs in the atmosphere, we conducted a mid-term study of the freezing characteristics of precipitation. A total of 121 samples were collected during a period of >1.5 years at the rural site of Opme (680 m a.s.l. (above sea level), France). INP concentration ranged over two orders of magnitude at a given temperature depending on the sample; there were <1 INPs mL −1 at ≥−5 • C,~0.1 to 10 mL −1 between −5 • C and −8 • C, and~1 to 100 mL −1 at colder temperatures. The data support the existence of an intimate natural link between biological INPs and hydrological cycles. In addition, acidification was strongly correlated with a decrease of the freezing characteristics of the samples, suggesting that human activities impact the role of INPs as triggers of precipitation. Water isotope ratio measurements and statistical comparison with aerosol and cloud water data confirmed some extent of INP partitioning in the atmosphere, with the INPs active at the warmest temperatures tending to be more efficiently precipitated.

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Ice nucleating particles at a coastal marine boundary layer site: correlations with aerosol type and meteorological conditions

Cited by 83 publications

References 163 publications

Review: The Use of Real-Time Fluorescence Instrumentation to Monitor Ambient Primary Biological Aerosol Particles (PBAP)

Review: The Use of Real-Time Fluorescence Instrumentation to Monitor Ambient Primary Biological Aerosol Particles (PBAP)

Potential of polarization lidar to provide profiles of CCN- and INP-relevant aerosol parameters

Atmospheric Processing and Variability of Biological Ice Nucleating Particles in Precipitation at Opme, France

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