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Data from: Automation and Heat Transfer Characterization of Immersion Mode Spectroscopy for Analysis of Ice Nucleating Particles
Prather, Kimberly A
Date Created and/or Issued
June 2016 to December 2016
Contributing Institution
UC San Diego, Research Data Curation Program
Center for Aerosol Impacts on Chemistry of the Environment (CAICE)
Rights Information
Under copyright
Constraint(s) on Use: This work is protected by the U.S. Copyright Law (Title 17, U.S.C.). Use of this work beyond that allowed by "fair use" or any license applied to this work requires written permission of the copyright holder(s). Responsibility for obtaining permissions and any use and distribution of this work rests exclusively with the user and not the UC San Diego Library. Inquiries can be made to the UC San Diego Library program having custody of the work.
Use: This work is available from the UC San Diego Library. This digital copy of the work is intended to support research, teaching, and private study.
Rights Holder and Contact
UC Regents
The heat transfer properties of the SIO-Automated Ice Spectrometer (AIS), an ice nucleation measurement technique, are characterized using a finite-element analysis based heat transfer simulation that was developed using the 3D Design Software SOLIDWORKS. The heat transfer simulation is proposed as a tool that could be used to explain the sources of bias in temperature measurements in ice nucleation particles (INP) measurement techniques, and ultimately explain the observed discrepancies in measured ice nucleation particles (INP) freezing temperatures between different instruments. The simulation results posted here show that a difference of +8.4 °C between the well base temperature and the headspace gas results in an up to 0.6 °C stratification of the aliquot, whereas a difference of +4.2 °C or less results in a thermally homogenous water volume within the error of the thermal probe, ±0.2 °C. The results also show that there is a strong temperature gradient in the immediate vicinity of the aliquot, such that without careful placement of temperature probes, or characterization of heat transfer properties of the water and cooling environment, ice nucleation particles (INP) measurements can be biased toward colder temperatures. Using the modified immersion mode technique, the Automated Ice Spectrometer (AIS) measurements of the standard test dust illite NX are reported and compared against 6 other immersion mode droplet assay techniques featured in (Hiranuma et al., 2015) that used wet suspensions.
Funding to support this research was provided by the Center for Aerosol Impacts on Climate and Environment (CAICE), a National Science Foundation Center for Chemical Innovation (CHE-1305427).
Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 ( )
Beall, Charlotte M.; Stokes, M. Dale; Hill, Thomas C.; DeMott, Paul J.; DeWald, Jesse T.; Prather, Kimberly A. (2017). Data from: Automation and Heat Transfer Characterization of Immersion Mode Spectroscopy for Analysis of Ice Nucleating Particles. In Center for Aerosol Impacts on Chemistry of the Environment (CAICE). UC San Diego Library Digital Collections.
Beall, C. M., Stokes, M. D., Hill, T. C., DeMott, P. J., DeWald, J. T., and Prather, K. A.: Automation and heat transfer characterization of immersion mode spectroscopy for analysis of ice nucleating particles, Atmos. Meas. Tech., 10, 2613-2626,, 2017.
Ice nucleation

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