Development, Characterization, and Validation of a Cold Stage-Based Ice Nucleation Array (PKU-INA)

Chen, Jie; Pei, Xiangyu; Wang, Hong; Zhu, Yao; Tang, Mingjin; Wu, Zhijun

doi:10.3390/atmos9090357

Cited by 22 publications

(31 citation statements)

References 38 publications

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“…INP measurements in the immersion mode were conducted using the PeKing University Ice Nucleation Array (PKU-INA). PKU-INA is a cold-stage-based ice nucleation array (Chen et al, 2018a). The sampled filter of each stage was completely submerged in 20 mL double-distilled water (resistivity of 18.2 M cm −1 at 25 • C).…”

Section: Inp Measurementsmentioning

confidence: 99%

Size-resolved atmospheric ice-nucleating particles during East Asian dust events

Chen

et al. 2021

Atmos. Chem. Phys.

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Abstract. Asian dust is an important source of atmospheric ice-nucleating particles (INPs). However, the freezing activity of airborne Asian dust, especially its sensitivity to particle size, is poorly understood. In this study we report the first INP measurement of size-resolved airborne mineral dust collected during East Asian dust events. The measured total INP concentrations in the immersion mode ranged from 10−2 to 102 L−1 in dust events at temperatures between −25 and −5 ∘C. The average contributions of heat-sensitive INPs at three temperatures, −10, −15, and −20 ∘C, were 81±12 %, 70±15 %, and 38±21 %, respectively, suggesting that proteinaceous biological materials have a substantial effect on the ice nucleation properties of Asian airborne mineral dust at high temperatures. The dust particles which originated from China's northwest deserts are more efficient INPs compared to those from northern regions. In general, there was no significant difference in the ice nucleation properties between East Asian dust particles and other regions in the world. An explicit size dependence of both INP concentration and surface ice-active-site density was observed. The nucleation efficiency of dust particles increased with increasing particle size, while the INP concentration first increased rapidly and then leveled, due to the significant decrease in the number concentration of larger particles. A new set of parameterizations for INP activity based on size-resolved nucleation properties of Asian mineral dust particles were developed over an extended temperature range (−35 to −6 ∘C). These size-dependent parameterizations require only particle size distribution as input and can be easily applied in models.

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Section: Inp Measurementsmentioning

confidence: 99%

Size-resolved atmospheric ice-nucleating particles during East Asian dust events

Chen

et al. 2021

Atmos. Chem. Phys.

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“…Mineral dust has high spatial and temporal variability, impacting atmospheric, oceanic, biological, terrestrial and human systems (Garrison et al, 2003;Gat et al, 2017;Jickells et al, 2005;Mahowald et al, 2014;Mazar et al, 2016;Middleton and Goudie, 2001). Each year, gigatons of dust are transported globally over long distances, dominating the atmospheric aerosol mass and aerosol optical depth (AOD) (Chiapello et al, 1999;Tegen and Fung, 1994;Ben-Ami et al, 2010;Prospero, 1999;Koren et al, 2006). Though the exact property of an aerosol that determines its ice nucleation ability remains unclear, it was consistently shown that the mineral composition plays an important role (Kanji et al, 2017) and that for a certain mineral type, larger particles are more effective heterogeneous INPs than small ones (Archuleta et al, 2005;Lüönd et al, 2010;Welti et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Size-dependent ice nucleation by airborne particles during dust events in the eastern Mediterranean

et al. 2019

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Abstract. The prediction of cloud ice formation in climate models remains a challenge, partly due to the complexity of ice-related processes. Mineral dust is a prominent aerosol in the troposphere and is an important contributor to ice nucleation in mixed-phase clouds, as dust can initiate ice heterogeneously at relatively low supercooling conditions. We characterized the ice nucleation properties of size-segregated mineral dust sampled during dust events in the eastern Mediterranean. The sampling site allowed us to compare the properties of airborne dust from several sources with diverse mineralogy that passed over different atmospheric paths. We focused on particles with six size classes determined by the Micro-Orifice Uniform Deposit Impactor (MOUDI) cutoff sizes: 5.6, 3.2, 1.8, 1.0, 0.6 and 0.3 µm. Ice nucleation experiments were conducted in the Weizmann Supercooled Droplets Observation on a Microarray (WISDOM) setup, whereby the particles are immersed in nanoliter droplets using a microfluidics technique. We observed that the activity of airborne particles depended on their size class; supermicron and submicron particles had different activities, possibly due to different composition. The concentrations of ice-nucleating particles and the density of active sites (ns) increased with the particle size and particle concentration. The supermicron particles in different dust events showed similar activity, which may indicate that freezing was dominated by common mineralogical components. Combining recent data of airborne mineral dust, we show that current predictions, which are based on surface-sampled natural dust or standard mineral dust, overestimate the activity of airborne dust, especially for the submicron class. Therefore, we suggest including information on particle size in order to increase the accuracy of ice formation modeling and thus weather and climate predictions.

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“…To avoid frost during cooling, high-purity dry nitrogen was delivered into the cold stage during the measurement. The temperature uncertainty was less than ± 0.4 ℃ at the various cooling rates (Chen et al, 2018a).…”

Section: Inp Measurementsmentioning

confidence: 81%

“…PKU-INA is a cold stage-based ice nucleation array, operated after careful temperature calibration (Chen et al, 2018a). The sampled filter of each stage was completely submerged in 20 mL double-distilled water (resistivity of 18.2 MΩ• cm at 25 ℃).…”

Section: Inp Measurementsmentioning

confidence: 99%

Size-Resolved Atmospheric Ice Nucleating Particles during East Asian Dust Events

Chen¹,

Wu²,

Chen³

et al. 2020

Preprint

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Abstract. Asian dust is an important source of atmospheric ice nucleating particles (INPs). However, the freezing activity of airborne Asian dust, especially its sensitivity to particle size, is poorly understood. In this study we report the first INP measurement of size-resolved airborne mineral dust collected during East Asian dust events. The measured total INP concentrations in the immersion mode ranged from 10−2 to 102 L−1 in dust events at temperatures between −25 and −5 °C. The average contributions of heat-sensitive INPs at three temperatures, −10, −15, and −20 °C, were 81 ± 12 %, 70 ± 15 %, and 38 ± 21 %, respectively, suggesting that proteinaceous biological materials have a substantial effect on the ice nucleation properties of Asian atmospheric mineral dust at warm temperatures. The dust particles which originated from China's northwest deserts are more efficient INPs compared to those from northern regions. There was no significant difference in the ice nucleation properties between East Asian dust particles and other regions in the world. An explicit size dependence of both INP concentration and surface ice active density was observed. The nucleation efficiency of dust particles increased with increasing particle size, while the INP concentration first increased rapidly and then levelled, due to the significant decrease in the number concentration of larger particles. A new set of parameterizations for INP activity based on size-resolved nucleation properties of Asian mineral dust particles were developed over an extended temperature range (−35 ~ −6 °C). These size-dependent parameterizations require only particle size distributions as input, and can be easily applied in models.

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Development, Characterization, and Validation of a Cold Stage-Based Ice Nucleation Array (PKU-INA)

Cited by 22 publications

References 38 publications

Size-resolved atmospheric ice-nucleating particles during East Asian dust events

Size-resolved atmospheric ice-nucleating particles during East Asian dust events

Size-dependent ice nucleation by airborne particles during dust events in the eastern Mediterranean

Size-Resolved Atmospheric Ice Nucleating Particles during East Asian Dust Events

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