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Title: Integrating laboratory and field data to quantify the immersion freezing ice nucleation activity of mineral dust particles

Abstract

Data from both laboratory studies and atmospheric measurements are used to develop an empirical parameterization for the immersion freezing activity of natural mineral dust particles. Measurements made with the Colorado State University (CSU) continuous flow diffusion chamber (CFDC) when processing mineral dust aerosols at a nominal 105% relative humidity with respect to water (RH w) are taken as a measure of the immersion freezing nucleation activity of particles. Ice active frozen fractions vs. temperature for dusts representative of Saharan and Asian desert sources were consistent with similar measurements in atmospheric dust plumes for a limited set of comparisons available. The parameterization developed follows the form of one suggested previously for atmospheric particles of non-specific composition in quantifying ice nucleating particle concentrations as functions of temperature and the total number concentration of particles larger than 0.5 μm diameter. Such an approach does not explicitly account for surface area and time dependencies for ice nucleation, but sufficiently encapsulates the activation properties for potential use in regional and global modeling simulations, and possible application in developing remote sensing retrievals for ice nucleating particles. A calibration factor is introduced to account for the apparent underestimate (by approximately 3, on average) of the immersion freezingmore » fraction of mineral dust particles for CSU CFDC data processed at an RH w of 105% vs. maximum fractions active at higher RH w. Instrumental factors that affect activation behavior vs. RH w in CFDC instruments remain to be fully explored in future studies. Nevertheless, the use of this calibration factor is supported by comparison to ice activation data obtained for the same aerosols from Aerosol Interactions and Dynamics of the Atmosphere (AIDA) expansion chamber cloud parcel experiments. Further comparison of the new parameterization, including calibration correction, to predictions of the immersion freezing surface active site density parameterization for mineral dust particles, developed separately from AIDA experimental data alone, shows excellent agreement for data collected in a descent through a Saharan aerosol layer. These studies support the utility of laboratory measurements to obtain atmospherically relevant data on the ice nucleation properties of dust and other particle types, and suggest the suitability of considering all mineral dust as a single type of ice nucleating particle as a useful first-order approximation in numerical modeling investigations.« less

Authors:
 [1];  [1];  [2]; ORCiD logo [3];  [4];  [1];  [5];  [5];  [6];  [6]; ORCiD logo [1]
  1. Colorado State Univ., Fort Collins, CO (United States). Dept. of Atmospheric Science
  2. Droplet Measurement Technologies, Boulder, CO (United States)
  3. Carnegie Mellon Univ., Pittsburgh, PA (United States). Center for Atmospheric Particle Studies
  4. North Carolina State Univ., Raleigh, NC (United States). Dept. of Marine, Earth and Atmospheric Sciences
  5. Karlsruhe Inst. of Technology (KIT) (Germany). Inst. for Meteorology and Climate Research. Atmospheric Aerosol Research
  6. Univ. of Wyoming, Laramie, WY (United States). Dept. of Atmospheric Sciences
Publication Date:
Research Org.:
Colorado State Univ., Fort Collins, CO (United States); Univ. of Wyoming, Laramie, WY (United States); Karlsruhe Inst. of Technology (KIT) (Germany)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23); National Science Foundation (NSF); Helmholtz Association (Germany)
OSTI Identifier:
1227905
Alternate Identifier(s):
OSTI ID: 1418647
Grant/Contract Number:  
SC0002354; ATM-0611936; ATM-0841602; AGS-1036028; AGS-1358495; AGS-1034858; VH-VI-233
Resource Type:
Published Article
Journal Name:
Atmospheric Chemistry and Physics (Online)
Additional Journal Information:
Journal Name: Atmospheric Chemistry and Physics (Online); Journal Volume: 15; Journal Issue: 1; Journal ID: ISSN 1680-7324
Publisher:
European Geosciences Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

DeMott, P. J., Prenni, A. J., McMeeking, G. R., Sullivan, R. C., Petters, M. D., Tobo, Y., Niemand, M., Möhler, O., Snider, J. R., Wang, Z., and Kreidenweis, S. M. Integrating laboratory and field data to quantify the immersion freezing ice nucleation activity of mineral dust particles. United States: N. p., 2015. Web. doi:10.5194/acp-15-393-2015.
DeMott, P. J., Prenni, A. J., McMeeking, G. R., Sullivan, R. C., Petters, M. D., Tobo, Y., Niemand, M., Möhler, O., Snider, J. R., Wang, Z., & Kreidenweis, S. M. Integrating laboratory and field data to quantify the immersion freezing ice nucleation activity of mineral dust particles. United States. doi:10.5194/acp-15-393-2015.
DeMott, P. J., Prenni, A. J., McMeeking, G. R., Sullivan, R. C., Petters, M. D., Tobo, Y., Niemand, M., Möhler, O., Snider, J. R., Wang, Z., and Kreidenweis, S. M. Tue . "Integrating laboratory and field data to quantify the immersion freezing ice nucleation activity of mineral dust particles". United States. doi:10.5194/acp-15-393-2015.
@article{osti_1227905,
title = {Integrating laboratory and field data to quantify the immersion freezing ice nucleation activity of mineral dust particles},
author = {DeMott, P. J. and Prenni, A. J. and McMeeking, G. R. and Sullivan, R. C. and Petters, M. D. and Tobo, Y. and Niemand, M. and Möhler, O. and Snider, J. R. and Wang, Z. and Kreidenweis, S. M.},
abstractNote = {Data from both laboratory studies and atmospheric measurements are used to develop an empirical parameterization for the immersion freezing activity of natural mineral dust particles. Measurements made with the Colorado State University (CSU) continuous flow diffusion chamber (CFDC) when processing mineral dust aerosols at a nominal 105% relative humidity with respect to water (RHw) are taken as a measure of the immersion freezing nucleation activity of particles. Ice active frozen fractions vs. temperature for dusts representative of Saharan and Asian desert sources were consistent with similar measurements in atmospheric dust plumes for a limited set of comparisons available. The parameterization developed follows the form of one suggested previously for atmospheric particles of non-specific composition in quantifying ice nucleating particle concentrations as functions of temperature and the total number concentration of particles larger than 0.5 μm diameter. Such an approach does not explicitly account for surface area and time dependencies for ice nucleation, but sufficiently encapsulates the activation properties for potential use in regional and global modeling simulations, and possible application in developing remote sensing retrievals for ice nucleating particles. A calibration factor is introduced to account for the apparent underestimate (by approximately 3, on average) of the immersion freezing fraction of mineral dust particles for CSU CFDC data processed at an RHw of 105% vs. maximum fractions active at higher RHw. Instrumental factors that affect activation behavior vs. RHw in CFDC instruments remain to be fully explored in future studies. Nevertheless, the use of this calibration factor is supported by comparison to ice activation data obtained for the same aerosols from Aerosol Interactions and Dynamics of the Atmosphere (AIDA) expansion chamber cloud parcel experiments. Further comparison of the new parameterization, including calibration correction, to predictions of the immersion freezing surface active site density parameterization for mineral dust particles, developed separately from AIDA experimental data alone, shows excellent agreement for data collected in a descent through a Saharan aerosol layer. These studies support the utility of laboratory measurements to obtain atmospherically relevant data on the ice nucleation properties of dust and other particle types, and suggest the suitability of considering all mineral dust as a single type of ice nucleating particle as a useful first-order approximation in numerical modeling investigations.},
doi = {10.5194/acp-15-393-2015},
journal = {Atmospheric Chemistry and Physics (Online)},
number = 1,
volume = 15,
place = {United States},
year = {2015},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.5194/acp-15-393-2015

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Cited by: 61 works
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