Cloud Condensation Nuclei Counter (CCNc)
The analysis of size-segregated cloud condensation nuclei counter (CCNC) data and its implications for cloud droplet activation
... (cloud condensation nu- clei) and hygroscopic properties were measured with a size- segregated CCNC (cloud condensation nuclei counter) in a boreal environment of southern ...
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Calibration and measurement uncertainties of a continuous-flow cloud condensation nuclei counter (DMT-CCNC): CCN activation of ammonium sulfate and sodium chloride aerosol particles in theory and experiment
... 2.1 Cloud condensation nuclei counter (CCNC) The CCNC used and characterized in this study is a continuous-flow streamwise thermal-gradient CCN counter, commercially available from ...
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A synthesis of cloud condensation nuclei counter (CCNC) measurements within the EUCAARI network
... This article summarises the measurements performed by CCNCs within the framework of the European Integrated project on Aerosol Cloud Climate and Air Quality interac- tions (EUCAARI). One of the EUCAARI project ...
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Measurements of particle masses of inorganic salt particles for calibration of cloud condensation nuclei counters
... continuous-flow cloud condensation nuclei counter (DMT-CCNC): CCN activation of ammonium sulfate and sodium chloride aerosol particles in theory and experiment, ...
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Hygroscopic properties and cloud condensation nuclei activation of limonene-derived organosulfates and their mixtures with ammonium sulfate
... a cloud condensation nuclei counter (CCNC) to determine the hy- groscopicity parameter, κ, for pure L-OS 250 and mixtures of L-OS 250 with ammonium sulfate (AS) over a wide range of humidity ...
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A broad supersaturation scanning (BS2) approach for rapid measurement of aerosol particle hygroscopicity and cloud condensation nuclei activity
... Fast scanning of S is important for measurements of am- bient CCN or laboratory-generated CCN with high temporal variability. The DMT (Droplet Measurement Technologies) CCN counter (CCNC) is one of the most ...
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Observations of Australian Cloud Condensation Nuclei (CCN)
... Inside the DMA are two cylinders, one inside the other. The outer cylinder is kept at ground potential, while the inner cylinder is connected to a negative power supply (0 to 10,000 V), creating an electric field between ...
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Measured and modelled cloud condensation nuclei number concentration at the high alpine site Jungfraujoch
... The aerosol number size distribution between diameters of 12 and 570 nm was measured with a scanning mobility parti- cle sizer (SMPS). It consisted of a differential mobility ana- lyzer (DMA, TSI 3071) and a ...
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Estimation of cloud condensation nuclei concentration from aerosol optical quantities: influential factors and uncertainties
... aerosol condensation nuclei (CN) concentra- tions, aerosol scattering and absorption properties, as well as the aerosol hygroscopic growth factor (f RH ) , are mea- sured by a suite of instruments ...
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Size-dependent hygroscopicity parameter ( κ ) and chemical composition of secondary organic cloud condensation nuclei
... Here we only brie fly mention the particle measurements. The number size distribution was characterized using a scanning mobility particle sizer (SMPS). Additionally, the total number concentration was measured using a ...
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Hygroscopic growth and cloud condensation nuclei activity of fresh and chemically-aged biomass-pyrolyzed organic aerosol
... 2.4.3 Condensation particle counter (CPC) The CPC and CCN counter have a similar working concept: condensation of a vapor is used to grow small aerosol particles into a larger size that can be ...
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Experimental and theoretical studies of cloud condensation nuclei
... Cloud condensation nuclei ( CCN), those particles that nucleate cloud droplet forma- tion, influence the droplet number and size distribution in a cloud, which in turn d[r] ...
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Measurement and modeling of cloud condensation nuclei in continental air
... To characterize the influence of different Köhler modeling approaches on the CCNC calibration and measurement data analysis, critical supersaturations ( S c ) have been calculated for amm[r] ...
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Global cloud condensation nuclei influenced by carbonaceous combustion aerosol
... 2010; Jacobson et al., 2010). However, it has not been possi- ble to evaluate these predictions against observed CCN con- centrations. In this paper we investigate the impact of carbonaceous combustion aerosol on global ...
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Global cloud condensation nuclei influenced by carbonaceous combustion aerosol
... 2010; Jacobson et al., 2010). However, it has not been possi- ble to evaluate these predictions against observed CCN con- centrations. In this paper we investigate the impact of carbonaceous combustion aerosol on global ...
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Efficiency of cloud condensation nuclei formation from ultrafine particles
... With a large fraction of new particles added to the atmosphere being too small to act as CCN immediately, it is important to determine their ability to grow to CCN size in 5 various parts of the atmosphere. In order to ...
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Cloud condensation nuclei closure study on summer arctic aerosol
... The directly measured CCN number concentration was then com- pared with a CCN number concentration calculated using both bulk aerosol mass composition data from an aerosol mass spectrome[r] ...
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On the Effect of Dust Particles on Global Cloud Condensation Nuclei and Cloud Droplet Number
... and cloud droplet number ...considers cloud droplet formation within an ascending air parcel con- taining an external mixture of soluble particles (that activate according to Köhler theory), and insoluble, ...
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Organic condensation: a vital link connecting aerosol formation to cloud condensation nuclei (CCN) concentrations
... The global implications of our results are illustrated in Figs. 9–11, where the impact of the enhanced ultrafine par- ticle growth is shown as predicted with the chemical trans- port model GEOS-Chem for June 2001 (Figs. ...
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The relationship between biomass burning aerosols, cloud condensation nuclei and cloud stucture in Amazonia
... Climatology of the intensity of daily precipitation as a percentage of total amount in 10 mm/day categories for different temperature regimes, based on 51, 37, and 12 worldwide stations[r] ...
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