Adsorption of nitrogen and water vapor by insoluble particles and the implication on cloud condensation nuclei activity

Hung, Hsin-Chia; Wang, Kuan-Chih; Chen, Jen‐Ping

doi:10.1016/j.jaerosci.2015.04.002

Cited by 13 publications

(47 citation statements)

References 24 publications

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“…Postgrado (AUIP), Consejeria de Innovación, ciencia y Empleo de la Junta de Andalucía, also by "Juan de la CiervaFormación" program (FJCI-2014-22052 andFJCI-2014-20819) (l) BC was assumed to be insoluble (e.g. Hung et al, 2015). …”

Section: Discussionunclassified

Hygroscopic growth study in the framework of EARLINET during the SLOPE I campaign: synergy of remote sensing and in-situ instrumentation

Bedoya-Velásquez¹,

Navas-Guzmán²,

Granados-Muñoz³

et al. 2017

Preprint

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25This work focuses on the study of aerosol hygroscopic growth during Sierra Nevada Lidar AerOsol Profiling Experiment (SLOPE I) campaign by using the synergy of active and passive remote sensors at Granada valley station (IISTA-CEAMA station) and in-situ instrumentation at a mountain station (Sierra Nevada station, SNS), located ~20 km away from IISTA-CEAMA and about 1 km above this station. To this end, a methodology based on the combination of calibrated water vapour mixing ratio ( ) profiles, retrieved from an EARLINET multiwavelength Raman lidar (RL), and continuous temperature 30 profiles from a microwave radiometer (MWR) for obtaining relative humidity ( ) profiles with high temporal resolution is used. This methodology is validated against an approach using radiosounding (RS) data at the EARLINET IISTA-CEAMA station, achieving differences in hygroscopic growth parameter ( ) lower than 5% between the methodology based on RS and that based on remote sensing. During SLOPE I the remote sensing methodology used for aerosol hygroscopic growth studies has been checked using Mie calculations with in-situ measurements at SNS. For SLOPE I case with remote sensing 35 instrumentation, an increase in particle backscatter coefficient at 355 and 532 nm is observed from 1.5 to 2.4 km a.s.l. in the 2 relative humidity range of 78-98%, but also a decrease on Ångström exponent (AE) and particle linear depolarization ratio (PLDR). This fact indicates that particles become larger and more spherical as relative humidity increases, what is strongly related to aerosol hygroscopic growth. In addition, atmospheric stability is checked ensuring well-mixed layers.Vertical and horizontal wind analysis is performed by means of a co-located Doppler lidar system at IISTA-CEAMA station, in order to evaluate the horizontal and vertical dynamics of the air masses. Finally, the Hänel parameterization is applied to 5 experimental data for both stations, obtaining relative differences between RL and Mie simulations up to 13 % and 10 % for 532 nm and 355 nm, respectively.

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Section: Discussionunclassified

Hygroscopic growth study in the framework of EARLINET during the SLOPE I campaign: synergy of remote sensing and in-situ instrumentation

Bedoya-Velásquez¹,

Navas-Guzmán²,

Granados-Muñoz³

et al. 2017

Preprint

View full text Add to dashboard Cite

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“…Commercial instruments, usually designed to measure the Brunauer-Emmett-Teller (BET) surface areas using nitrogen or helium (Torrent et al, 1990), have been utilized to investigate hygroscopic properties of atmospherically relevant particles (Ma et al, 2010b;Ma et al, 2012b;Hung et al, 2015). For example, Ma et al (2010b) integrated an AUTOSORB-1-C instrument (Quantachrome, US) with a water vapor generator, and employed this apparatus to investigate hygroscopic properties of NaCl, NH4NO3 and (NH4)2SO4.…”

Section: Physisorption Analysermentioning

confidence: 99%

“…Fourier transform infrared spectroscopy (FTIR), a vibrational absorption spectroscopy, has been widely employed in laboratory (Goodman et al, 2000;Eliason et al, 2003;Asad et al, 2004b;Hung et al, 2005;Najera et al, 2009;Li et al, 2010;Tang et al, 2016b) and field work (Maria et al, 2002;Russell et al, 2011;Takahama et al, 2013;Takahama et al, 2016;Takahama et al, 2019) to characterize chemical composition of aerosol particles. It can also be used in aerosol hygroscopicity studies.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 99%

A review of experimental techniques for aerosol hygroscopicity studies

Tang¹,

Chan²,

Li³

et al. 2019

Preprint

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<p><strong>Abstract.</strong> Hygroscopicity is one of the most important physicochemical properties of aerosol particles, and also plays indispensable roles in many other scientific and technical fields. A myriad of experimental techniques, which differ in principles, configurations and cost, are available for investigating aerosol hygroscopicity under subsaturated conditions (i.e., relative humidity below 100&#8201;%). A comprehensive review of these techniques is provided in this paper, in which experimental techniques are broadly classified into four categories, according to the way samples under investigation are prepared. For each technique, we describe its operation principle and typical configuration, use representative examples reported in previous work to illustrate how this technique can help better understand aerosol hygroscopicity, and discuss its advantages and disadvantages. In addition, future directions are outlined and discussed for further technical improvement and instrumental development.</p>

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“…FHH-AT describes the contribution of water adsorption to CCN activity by Eq. (2) (Hung et al, 2015;Kumar et al, 2009b;Sorjamaa and Laaksonen, 2007;Tang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Technical note: Frenkel, Halsey and Hill analysis of water on clay minerals: toward closure between cloud condensation nuclei activity and water adsorption

et al. 2019

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Abstract. Insoluble atmospheric aerosol, such as mineral dust, has been identified as an important contributor to the cloud droplet number concentration and indirect climate effect. However, empirically derived Frenkel–Halsey–Hill (FHH) water adsorption parameters remain the largest source of uncertainty in assessing the effect of insoluble aerosol on climate using the FHH activation theory (FHH-AT). Furthermore, previously reported FHH water adsorption parameters for illite and montmorillonite determined from water adsorption measurements below 100 % RH do not satisfactorily agree with values determined from FHH-AT analysis of experimental cloud condensation nuclei (CCN) measurements under supersaturated conditions. The work reported here uses previously reported experimental water adsorption measurements for illite and montmorillonite clays (Hatch et al., 2012, 2014) to show that improved analysis methods that account for the surface microstructure are necessary to obtain better agreement of FHH parameters between water adsorption and experimental CCN-derived FHH parameters.

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Adsorption of nitrogen and water vapor by insoluble particles and the implication on cloud condensation nuclei activity

Cited by 13 publications

References 24 publications

Hygroscopic growth study in the framework of EARLINET during the SLOPE I campaign: synergy of remote sensing and in-situ instrumentation

Hygroscopic growth study in the framework of EARLINET during the SLOPE I campaign: synergy of remote sensing and in-situ instrumentation

A review of experimental techniques for aerosol hygroscopicity studies

Technical note: Frenkel, Halsey and Hill analysis of water on clay minerals: toward closure between cloud condensation nuclei activity and water adsorption

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