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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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AMT | Articles | Volume 11, issue 10
Atmos. Meas. Tech., 11, 5629–5641, 2018
https://doi.org/10.5194/amt-11-5629-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: Fifth International Workshop on Ice Nucleation (FIN) (ACP/AMT...

Atmos. Meas. Tech., 11, 5629–5641, 2018
https://doi.org/10.5194/amt-11-5629-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 15 Oct 2018

Research article | 15 Oct 2018

An instrument for quantifying heterogeneous ice nucleation in multiwell plates using infrared emissions to detect freezing

Alexander D. Harrison et al.

Data sets

Freezing temperature laboratory experiments of individual droplets each contained in a well plate using InfraRed-Nucleation by Immersed Particles Instrument (IR-NIPI) A. D. Harrison, T. F. Whale, R. Rutledge, S. Lamb, M. D. Tarn, G. C. E. Porter, M. Adams, J. B. McQuaid, G. J. Morris, and B. J. Murray https://doi.org/10.5285/858a4b439d7d4466b82ea5215614f135

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Short summary
The detection of low concentrations of ice-nucleating particles (INPs) is challenging. Here we present a new technique (IR-NIPI) that is sensitive to low concentrations of INPs (> 0.01 L−1) and uses an infrared camera with a novel calibration to detect the freezing of experimental suspensions. IR-NIPI temperature measurements prove to be robust with a series of comparisons to thermocouple measurements. Experimental comparisons to other freezing assay instruments are also in agreement.
The detection of low concentrations of ice-nucleating particles (INPs) is challenging. Here we...
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