Effects of crystallographic properties on the ice nucleation properties of volcanic ash particles

Kulkarni, Gourihar; Nandasiri, Manjula I.; Zelenyuk, Alla; Beránek, Josef; Madaan, Nitesh; Devaraj, Arun; Shutthanandan, V.; Thevuthasan, Suntharampillai; Varga, Tamás

doi:10.1002/2015gl063270

Cited by 21 publications

(26 citation statements)

References 52 publications

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“…Findings in this study support this, as all five samples contain plagioclase based on XRD results (Figures S4-S8). Other deposition-mode experiments conducted on volcanic ash attribute improved INA to the presence of a crystallographic structure [34], yet two of the samples used here (OB2 and Taupo) are dominated by amorphous glass and show similar values to samples containing higher mineral contents. Thus, results presented here indicate that differences in mineral/glass abundance do not affect depositional INA at the limited range of temperatures investigated (Figure 3).…”

Section: Deposition-mode Ice Nucleation Activitymentioning

confidence: 94%

“…The dotted line represents homogeneous ice nucleation of pure water [53]. "X" symbols denote previous deposition-mode nucleation studies conducted on ash samples from other volcanoes, including Eyjafjallajökull, (Iceland) [34,54], Volcàn Fuego (Guatemala), Taupo (New Zealand), and Soufrière Hills (Montserrat) [37]. Combined with the deposition-mode data obtained here, results of all studies indicate that volcanic ash grains are efficient ice nucleating particles (INPs) at the temperatures examined regardless of bulk composition or mineral content.…”

Section: Deposition-mode Ice Nucleation Activitymentioning

confidence: 99%

“…More recent studies [30][31][32][33] confirm previous results [29] in which K-feldspars are the most efficient INPs in comparison to other minerals tested, including Na/Ca-feldspars, clay minerals, quartz, calcite, metal sulfates, and metal oxides. Several studies [8,16,17,[34][35][36][37][38] have conducted nucleation experiments on volcanic ash, using samples from a limited number of volcanoes; thus, there is ample opportunity to add to the current dataset concerning volcanic ash INA. Because the motivation of this study is to examine the roles of bulk composition and mineral content, these samples are not composed of ash originally formed during explosive eruptions, but ash manufactured from other types of volcanic deposits.…”

Section: Introductionmentioning

confidence: 99%

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Compositional and Mineralogical Effects on Ice Nucleation Activity of Volcanic Ash

et al. 2018

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Volcanic ash produced during explosive eruptions may serve as ice nuclei in the atmosphere, contributing to the occurrence of volcanic lightning due to tribocharging from ice-ice or ice-ash collisions. Here, different ash samples were tested using deposition-mode and immersion-mode ice nucleation experiments. Results show that bulk composition and mineral abundance have no measurable effect on depositional freezing at the temperatures tested, as all samples have similar ice saturation ratios. In the immersion mode, there is a strong positive correlation between K 2 O content and ice nucleation site density at −25 • C and a strong negative correlation between MnO and TiO 2 content at temperatures from −35 to −30 • C. The most efficient sample in the immersion mode has the highest surface area, smallest average grain size, highest K 2 O content, and lowest MnO content. These results indicate that although ash abundance-which creates more available surface area for nucleation-has a significant effect on immersion-mode freezing, composition may also contribute. Consequently, highly explosive eruptions of compositionally evolved magmas create the necessary parameters to promote ice nucleation on grain surfaces, which permits tribocharging due to ice-ice or ice-ash collisions, and contribute to the frequent occurrence of volcanic lightning within the eruptive column and plume during these events.

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Section: Deposition-mode Ice Nucleation Activitymentioning

confidence: 94%

Section: Deposition-mode Ice Nucleation Activitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Compositional and Mineralogical Effects on Ice Nucleation Activity of Volcanic Ash

et al. 2018

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“…More recent research by Durant et al [6] has evaluated volcanic ash samples from Chile and Hawaii in the immersion freezing mode giving overall median freezing temperatures of 253.1 K. They also investigated the effects of composition and surface area on the ice nucleating efficiencies of volcanic ash, but found only a weak correlation with freezing temperature. Kulkarni et al [17] has suggested that composition is of secondary importance compared to crystallographic structure regarding the ice nucleating efficiency of volcanic ash. Fornea et al [18] determined an average freezing temperature of 254.9 ± 2.0 K for large ash particles (250–300 μm) immersed in droplets.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Ice Nucleation by Soufriere Hills Volcanic Ash Immersed in Water Droplets

et al. 2017

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Fine particles of ash emitted during volcanic eruptions may sporadically influence cloud properties on a regional or global scale as well as influencing the dynamics of volcanic clouds and the subsequent dispersion of volcanic aerosol and gases. It has been shown that volcanic ash can trigger ice nucleation, but ash from relatively few volcanoes has been studied for its ice nucleating ability. In this study we quantify the efficiency with which ash from the Soufriere Hills volcano on Montserrat nucleates ice when immersed in supercooled water droplets. Using an ash sample from the 11th February 2010 eruption, we report ice nucleating efficiencies from 246 to 265 K. This wide range of temperatures was achieved using two separate droplet freezing instruments, one employing nanolitre droplets, the other using microlitre droplets. Soufriere Hills volcanic ash was significantly more efficient than all other ash samples that have been previously examined. At present the reasons for these differences are not understood, but may be related to mineralogy, amorphous content and surface chemistry.

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“…Durant et al (2008) showed that compared to similar meteorological clouds, enhanced ice crystal concentrations and smaller average ice size may be expected in volcanic clouds. However, the "specific chemical and physical properties of volcanic ash particles that could affect their ability to induce ice formation are poorly understood" (Kulkarni et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Ash and ice clouds during the Mt Kelud February 2014 eruption as interpreted from IASI and AVHRR/3 observations

Kylling

2016

Atmos. Meas. Tech.

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Abstract. During the Mt Kelud February 2014 eruption the ash cloud was detectable on 13-14 February in the infrared with the reverse absorption technique by, for example, the Advanced Very High Resolution Radiometer (AVHRR/3). The Infrared Atmospheric Sounding Interferometer (IASI) observed the ash cloud also on 15 February when AVHRR did not detect any ash signal. The differences between ash detection with AVHRR/3 and IASI are discussed along with the reasons for the differences, supported by radiative transfer modelling. The effect of concurrent ice clouds on the ash detection and the ash signal in the IASI measurements is demonstrated. Specifically, a radiative transfer model is used to simulate IASI spectra with ash-only, with ice cloud only and with both ash and ice clouds. It is shown that modelled IASI spectra with ash and ice clouds reproduce the measured IASI spectra better than ash-only-or ice-only-modelled spectra. The ash and ice modelled spectra that best reproduce the IASI spectra contain about a factor of 12 less ash than the ash-only spectra that come closest to reproducing the measured spectra.

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Effects of crystallographic properties on the ice nucleation properties of volcanic ash particles

Cited by 21 publications

References 52 publications

Compositional and Mineralogical Effects on Ice Nucleation Activity of Volcanic Ash

Compositional and Mineralogical Effects on Ice Nucleation Activity of Volcanic Ash

Heterogeneous Ice Nucleation by Soufriere Hills Volcanic Ash Immersed in Water Droplets

Ash and ice clouds during the Mt Kelud February 2014 eruption as interpreted from IASI and AVHRR/3 observations

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