Articles | Volume 8, issue 2
https://doi.org/10.5194/amt-8-921-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/amt-8-921-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
25 Feb 2015
Research article |
| 25 Feb 2015
The white-light humidified optical particle spectrometer (WHOPS) – a novel airborne system to characterize aerosol hygroscopicity
B. Rosati
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
G. Wehrle
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
P. Zieger
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
now at: Department of Applied Environmental Science, Stockholm University, 10691 Stockholm, Sweden
U. Baltensperger
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
E. Weingartner
CORRESPONDING AUTHOR
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
now at: Institute for Aerosol and Sensor Technology, University of Applied Science Northwestern Switzerland, 5210 Windisch, Switzerland
Viewed
Total article views: 4,972 (including HTML, PDF, and XML)
Cumulative views and downloads
(calculated since 21 Jul 2014)
| HTML | XML | Total | Supplement | BibTeX | EndNote | |
|---|---|---|---|---|---|---|
| 3,003 | 1,790 | 179 | 4,972 | 359 | 232 | 247 |
- HTML: 3,003
- PDF: 1,790
- XML: 179
- Total: 4,972
- Supplement: 359
- BibTeX: 232
- EndNote: 247
Total article views: 3,810 (including HTML, PDF, and XML)
Cumulative views and downloads
(calculated since 25 Feb 2015)
| HTML | XML | Total | Supplement | BibTeX | EndNote | |
|---|---|---|---|---|---|---|
| 2,342 | 1,309 | 159 | 3,810 | 359 | 214 | 233 |
- HTML: 2,342
- PDF: 1,309
- XML: 159
- Total: 3,810
- Supplement: 359
- BibTeX: 214
- EndNote: 233
Total article views: 1,162 (including HTML, PDF, and XML)
Cumulative views and downloads
(calculated since 21 Jul 2014)
| HTML | XML | Total | BibTeX | EndNote | |
|---|---|---|---|---|---|
| 661 | 481 | 20 | 1,162 | 18 | 14 |
- HTML: 661
- PDF: 481
- XML: 20
- Total: 1,162
- BibTeX: 18
- EndNote: 14
Cited
15 citations as recorded by crossref.
- Aerosol hygroscopic growth, contributing factors, and impact on haze events in a severely polluted region in northern China J. Chen et al. https://doi.org/10.5194/acp-19-1327-2019
- Long-term aerosol optical hygroscopicity study at the ACTRIS SIRTA observatory: synergy between ceilometer and in situ measurements A. Bedoya-Velásquez et al. https://doi.org/10.5194/acp-19-7883-2019
- On the importance of the flow field in inexpensive optical aerosol particle counting and sizing C. Loizidis et al. https://doi.org/10.1038/s41598-025-11785-2
- Aerosolisation of microalgae: unveiling dimethyl-sulfide emissions during bubbling B. Rosati et al. https://doi.org/10.1038/s41612-025-01305-4
- The Ice Selective Inlet: a novel technique for exclusive extraction of pristine ice crystals in mixed-phase clouds P. Kupiszewski et al. https://doi.org/10.5194/amt-8-3087-2015
- LOAC: a small aerosol optical counter/sizer for ground-based and balloon measurements of the size distribution and nature of atmospheric particles – Part 1: Principle of measurements and instrument evaluation J. Renard et al. https://doi.org/10.5194/amt-9-1721-2016
- Effect of spray properties on aerosol scavenging efficiency with water mist H. Liang et al. https://doi.org/10.1080/02786826.2021.1966377
- Hygroscopic growth study in the framework of EARLINET during the SLOPE I campaign: synergy of remote sensing and in situ instrumentation A. Bedoya-Velásquez et al. https://doi.org/10.5194/acp-18-7001-2018
- Characterization of the Real Part of Dry Aerosol Refractive Index Over North America From the Surface to 12 km A. Aldhaif et al. https://doi.org/10.1029/2018JD028504
- Vertical profiling of aerosol hygroscopic properties in the planetary boundary layer during the PEGASOS campaigns B. Rosati et al. https://doi.org/10.5194/acp-16-7295-2016
- Effect of vessel size scale on the aerosol spray scavenging efficiency with water mist H. Liang et al. https://doi.org/10.1016/j.jaerosci.2021.105853
- Cooking Fume Particulate Matter as an Indoor Air Pollution Source: Comparative Measurement Methods and Correction Factors P. Wang et al. https://doi.org/10.3390/buildings16142793
- Studying the vertical aerosol extinction coefficient by comparing in situ airborne data and elastic backscatter lidar B. Rosati et al. https://doi.org/10.5194/acp-16-4539-2016
- Chemical composition and source analysis of carbonaceous aerosol particles at a mountaintop site in central Sweden V. Franke et al. https://doi.org/10.1080/16000889.2017.1353387
- An empirically derived inorganic sea spray source function incorporating sea surface temperature M. Salter et al. https://doi.org/10.5194/acp-15-11047-2015
15 citations as recorded by crossref.
- Aerosol hygroscopic growth, contributing factors, and impact on haze events in a severely polluted region in northern China J. Chen et al. https://doi.org/10.5194/acp-19-1327-2019
- Long-term aerosol optical hygroscopicity study at the ACTRIS SIRTA observatory: synergy between ceilometer and in situ measurements A. Bedoya-Velásquez et al. https://doi.org/10.5194/acp-19-7883-2019
- On the importance of the flow field in inexpensive optical aerosol particle counting and sizing C. Loizidis et al. https://doi.org/10.1038/s41598-025-11785-2
- Aerosolisation of microalgae: unveiling dimethyl-sulfide emissions during bubbling B. Rosati et al. https://doi.org/10.1038/s41612-025-01305-4
- The Ice Selective Inlet: a novel technique for exclusive extraction of pristine ice crystals in mixed-phase clouds P. Kupiszewski et al. https://doi.org/10.5194/amt-8-3087-2015
- LOAC: a small aerosol optical counter/sizer for ground-based and balloon measurements of the size distribution and nature of atmospheric particles – Part 1: Principle of measurements and instrument evaluation J. Renard et al. https://doi.org/10.5194/amt-9-1721-2016
- Effect of spray properties on aerosol scavenging efficiency with water mist H. Liang et al. https://doi.org/10.1080/02786826.2021.1966377
- Hygroscopic growth study in the framework of EARLINET during the SLOPE I campaign: synergy of remote sensing and in situ instrumentation A. Bedoya-Velásquez et al. https://doi.org/10.5194/acp-18-7001-2018
- Characterization of the Real Part of Dry Aerosol Refractive Index Over North America From the Surface to 12 km A. Aldhaif et al. https://doi.org/10.1029/2018JD028504
- Vertical profiling of aerosol hygroscopic properties in the planetary boundary layer during the PEGASOS campaigns B. Rosati et al. https://doi.org/10.5194/acp-16-7295-2016
- Effect of vessel size scale on the aerosol spray scavenging efficiency with water mist H. Liang et al. https://doi.org/10.1016/j.jaerosci.2021.105853
- Cooking Fume Particulate Matter as an Indoor Air Pollution Source: Comparative Measurement Methods and Correction Factors P. Wang et al. https://doi.org/10.3390/buildings16142793
- Studying the vertical aerosol extinction coefficient by comparing in situ airborne data and elastic backscatter lidar B. Rosati et al. https://doi.org/10.5194/acp-16-4539-2016
- Chemical composition and source analysis of carbonaceous aerosol particles at a mountaintop site in central Sweden V. Franke et al. https://doi.org/10.1080/16000889.2017.1353387
- An empirically derived inorganic sea spray source function incorporating sea surface temperature M. Salter et al. https://doi.org/10.5194/acp-15-11047-2015
Saved (final revised paper)
Latest update: 16 Sep 2026
Short summary
Only few measurements focused on vertical profiles of aerosol hygroscopic and optical properties in airborne studies. For this purpose the white-light optical particle spectrometer (WHOPS) was developed. It allows a relatively fast measurement of the particles hygroscopicity, mixing state and index of refraction of particles in the optically relevant size range. This paper presents a detailed technical description and characterization of the WHOPS and first results from the field.
Only few measurements focused on vertical profiles of aerosol hygroscopic and optical properties...
