Atmos. Chem. Phys. Discuss., 10, 19277-19307, 2010
www.atmos-chem-phys-discuss.net/10/19277/2010/
doi:10.5194/acpd-10-19277-2010
© Author(s) 2010. This work is distributed
under the Creative Commons Attribution 3.0 License.
Review Status
This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Manchester Ice Nucleus Counter (MINC) measurements from the 2007 International workshop on Comparing Ice nucleation Measuring Systems (ICIS-2007)
H. M. Jones1, M. J. Flynn1, P. J. DeMott2, and O. Möhler3
1Centre for Atmospheric Science, SEAES, University of Manchester, Manchester, UK
2Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado, USA
3Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Germany

Abstract. An ice nucleus counter was developed and constructed to enable investigation of potential ice nucleating materials. The Manchester Ice Nucleus Chamber (MINC) is a concentric-cylinder continuous flow diffusion chamber (CFDC). A full explanation of the MINC instrument is given here, along with first results and a comparison to an established instrument of similar design (Colorado State University CFDC) during sampling of common ice nucleating aerosols at the 2007 International workshop on Comparing Ice nucleation Measuring Systems (ICIS-2007). Both instruments detected the onset of ice nucleation under similar conditions of temperature and supersaturation for several different types of ice nuclei. Comparisons of the ratio of ice nuclei to total aerosol concentrations as a function of relative humidity (RH) showed agreement within one order of magnitude. Possible reasons for differences between the two instruments relating to differences in their design are discussed, along with suggestions to future improvements to the current design.

Citation: Jones, H. M., Flynn, M. J., DeMott, P. J., and Möhler, O.: Manchester Ice Nucleus Counter (MINC) measurements from the 2007 International workshop on Comparing Ice nucleation Measuring Systems (ICIS-2007), Atmos. Chem. Phys. Discuss., 10, 19277-19307, doi:10.5194/acpd-10-19277-2010, 2010.
 
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