Pressure-dependent performance of two CEN-specified condensation particle counters
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Published:2023-10-09
Issue:19
Volume:16
Page:4445-4460
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ISSN:1867-8548
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Container-title:Atmospheric Measurement Techniques
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language:en
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Short-container-title:Atmos. Meas. Tech.
Author:
Bauer Paulus S.ORCID, Spät DorianORCID, Eisenhut Martina, Gattringer AndreasORCID, Weinzierl BernadettORCID
Abstract
Abstract. One of the most important parameters to quantify an
aerosol is the particle number concentration. Condensation particle counters (CPCs) are commonly used to measure the aerosol number concentration in the
nanometer size range. To compare the data from different measurement
stations and campaigns, it is important to harmonize the instrument
specifications, which is why the CEN/TS 16976:2016 technical specification was introduced for CPCs. Therein, the parameters of the CEN CPC are specified
for standard pressure and temperature. However, CEN CPCs are used in various surroundings, on high mountains or on airplanes, where they are exposed to low-pressure conditions. Here, we present the pressure-dependent performance
(including the concentration linearity and counting efficiency) of two
different models of CEN CPCs, the Grimm 5410 CEN and the TSI 3772 CEN. We
found that their performance at 1000 and 750 hPa was in accordance with
the CEN technical specifications. Below 500 hPa, the performance decreased
for both CPC models, but the decrease was different for the two models. To
gain insight into the performance of the two CPC models, we performed a
simulation study. This study included simulations of the saturation profiles and calculations of internal particle losses within the CPCs. The
simulations reproduced the overall performance decrease with decreasing
pressure and reveal that the internal structure of the CPC has a significant
influence on the performance. We anticipate our publication to provide a
deeper understanding of the counting efficiency of CPCs and their pressure
dependence. Our findings might be a starting point for new standards that
include the pressure-dependent performance, or they could help in designing
new CPCs.
Funder
H2020 European Research Council European Space Agency Universität Wien
Publisher
Copernicus GmbH
Subject
Atmospheric Science
Reference61 articles.
1. Alnæs, M., Blechta, J., Hake, J., Johansson, A., Kehlet, B., Logg, A., Richardson, C., Ring, J., Rognes, M. E., and Wells, G. N.: The FEniCS Project Version 1.5, Archive of Numerical Software, 3, https://doi.org/10.11588/ANS.2015.100.20553, 2015. 2. Asmi, A., Collaud Coen, M., Ogren, J. A., Andrews, E., Sheridan, P., Jefferson, A., Weingartner, E., Baltensperger, U., Bukowiecki, N., Lihavainen, H., Kivekäs, N., Asmi, E., Aalto, P. P., Kulmala, M., Wiedensohler, A., Birmili, W., Hamed, A., O'Dowd, C., G Jennings, S., Weller, R., Flentje, H., Fjaeraa, A. M., Fiebig, M., Myhre, C. L., Hallar, A. G., Swietlicki, E., Kristensson, A., and Laj, P.: Aerosol decadal trends – Part 2: In-situ aerosol particle number concentrations at GAW and ACTRIS stations, Atmos. Chem. Phys., 13, 895–916, https://doi.org/10.5194/acp-13-895-2013, 2013. 3. Bauer, P., Spät, D., Eisenhut, M., Gattringer, A., and Weinzierl, B.: Data of Pressure-dependent performance of two CEN-specified condensation particle counters, Universtiät Wien [data set], https://doi.org/10.25365/phaidra.427, 2023. 4. Bezantakos, S. and Biskos, G.: Temperature and pressure effects on the
performance of the portable TSI 3007 condensation particle counter:
Implications on ground and aerial observations, J. Aerosol Sci., 159, 105877,
https://doi.org/10.1016/j.jaerosci.2021.105877, 2021. 5. Bianchi, F., Junninen, H., Bigi, A., Sinclair, V. A., Dada, L., Hoyle, C.
R., Zha, Q., Yao, L., Ahonen, L. R., Bonasoni, P., Mazon, S. B., Hutterli,
M., Laj, P., Lehtipalo, K., Kangasluoma, J., Kerminen, V.-M., Kontkanen, J.,
Marinoni, A., Mirme, S., Molteni, U., Petäjä, T., Riva, M., Rose,
C., Sellegri, K., Yan, C., Worsnop, D. R., Kulmala, M., Baltensperger, U.,
and Dommen, J.: Biogenic particles formed in the Himalaya as an important
source of free tropospheric aerosols, Nat. Geosci., 14, 4–9,
https://doi.org/10.1038/s41561-020-00661-5, 2020.
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