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Development and characterization of the Portable Ice Nucleation Chamber 2 (PINCii)

Castarède, Dimitri ; Brasseur, Zoé ; Wu, Yusheng ; Kanji, Zamin A. ; Hartmann, Markus ; Ahonen, Lauri ; Bilde, Merete ; Kulmala, Markku ; Petäjä, Tuukka and Pettersson, Jan B.C. , et al. (2023) In Atmospheric Measurement Techniques 16(16). p.3881-3899
Abstract

The Portable Ice Nucleation Chamber 2 (PINCii) is a newly developed continuous flow diffusion chamber (CFDC) for measuring ice nucleating particles (INPs). PINCii is a vertically oriented parallel-plate CFDC that has been engineered to improve upon the limitations of previous generations of CFDCs. This work presents a detailed description of the PINCii instrument and the upgrades that make it unique compared with other operational CFDCs. The PINCii design offers several possibilities for improved INP measurements. Notably, a specific icing procedure results in low background particle counts, which demonstrates the potential for PINCii to measure INPs at low concentrations (<10L-1). High-spatial-resolution wall-temperature mapping... (More)

The Portable Ice Nucleation Chamber 2 (PINCii) is a newly developed continuous flow diffusion chamber (CFDC) for measuring ice nucleating particles (INPs). PINCii is a vertically oriented parallel-plate CFDC that has been engineered to improve upon the limitations of previous generations of CFDCs. This work presents a detailed description of the PINCii instrument and the upgrades that make it unique compared with other operational CFDCs. The PINCii design offers several possibilities for improved INP measurements. Notably, a specific icing procedure results in low background particle counts, which demonstrates the potential for PINCii to measure INPs at low concentrations (<10L-1). High-spatial-resolution wall-temperature mapping enables the identification of temperature inhomogeneities on the chamber walls. This feature is used to introduce and discuss a new method for analyzing CFDC data based on the most extreme lamina conditions present within the chamber, which represent conditions most likely to trigger ice nucleation. A temperature gradient can be maintained throughout the evaporation section in addition to the main chamber, which enables PINCii to be used to study droplet activation processes or to extend ice crystal growth. A series of both liquid droplet activation and ice nucleation experiments were conducted at temperature and saturation conditions that span the spectrum of PINCii's operational conditions (-50≤temperature≤-15°C and 100 ≤ relative humidity with respect to ice≤160%) to demonstrate the instrument's capabilities. In addition, typical sources of uncertainty in CFDCs, including particle background, particle loss, and variations in aerosol lamina temperature and relative humidity, are quantified and discussed for PINCii.

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type
Contribution to journal
publication status
published
subject
in
Atmospheric Measurement Techniques
volume
16
issue
16
pages
19 pages
publisher
Copernicus GmbH
external identifiers
  • scopus:85172927268
ISSN
1867-1381
DOI
10.5194/amt-16-3881-2023
language
English
LU publication?
yes
id
f4adba2b-cd9d-42c0-89c2-304fb0fb2577
date added to LUP
2023-12-11 15:57:06
date last changed
2024-02-14 14:18:31
@article{f4adba2b-cd9d-42c0-89c2-304fb0fb2577,
  abstract     = {{<p>The Portable Ice Nucleation Chamber 2 (PINCii) is a newly developed continuous flow diffusion chamber (CFDC) for measuring ice nucleating particles (INPs). PINCii is a vertically oriented parallel-plate CFDC that has been engineered to improve upon the limitations of previous generations of CFDCs. This work presents a detailed description of the PINCii instrument and the upgrades that make it unique compared with other operational CFDCs. The PINCii design offers several possibilities for improved INP measurements. Notably, a specific icing procedure results in low background particle counts, which demonstrates the potential for PINCii to measure INPs at low concentrations (&lt;10L-1). High-spatial-resolution wall-temperature mapping enables the identification of temperature inhomogeneities on the chamber walls. This feature is used to introduce and discuss a new method for analyzing CFDC data based on the most extreme lamina conditions present within the chamber, which represent conditions most likely to trigger ice nucleation. A temperature gradient can be maintained throughout the evaporation section in addition to the main chamber, which enables PINCii to be used to study droplet activation processes or to extend ice crystal growth. A series of both liquid droplet activation and ice nucleation experiments were conducted at temperature and saturation conditions that span the spectrum of PINCii's operational conditions (-50≤temperature≤-15°C and 100 ≤ relative humidity with respect to ice≤160%) to demonstrate the instrument's capabilities. In addition, typical sources of uncertainty in CFDCs, including particle background, particle loss, and variations in aerosol lamina temperature and relative humidity, are quantified and discussed for PINCii.</p>}},
  author       = {{Castarède, Dimitri and Brasseur, Zoé and Wu, Yusheng and Kanji, Zamin A. and Hartmann, Markus and Ahonen, Lauri and Bilde, Merete and Kulmala, Markku and Petäjä, Tuukka and Pettersson, Jan B.C. and Sierau, Berko and Stetzer, Olaf and Stratmann, Frank and Svenningsson, Birgitta and Swietlicki, Erik and Thu Nguyen, Quynh and Duplissy, Jonathan and Thomson, Erik S.}},
  issn         = {{1867-1381}},
  language     = {{eng}},
  month        = {{08}},
  number       = {{16}},
  pages        = {{3881--3899}},
  publisher    = {{Copernicus GmbH}},
  series       = {{Atmospheric Measurement Techniques}},
  title        = {{Development and characterization of the Portable Ice Nucleation Chamber 2 (PINCii)}},
  url          = {{http://dx.doi.org/10.5194/amt-16-3881-2023}},
  doi          = {{10.5194/amt-16-3881-2023}},
  volume       = {{16}},
  year         = {{2023}},
}