Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 18, issue 17
Articles | Volume 18, issue 17
https://doi.org/10.5194/amt-18-4397-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/amt-18-4397-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 17
Research article
 | 
10 Sep 2025
Research article |  | 10 Sep 2025

Improving the accuracy in particle concentration measurements of a balloon-borne optical particle counter, UCASS

Sina Jost, Ralf Weigel, Konrad Kandler, Luis Valero, Jessica Girdwood, Chris Stopford, Warren Stanley, Luca K. Eichhorn, Christian von Glahn, and Holger Tost

Viewed

Total article views: 4,422 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
3,695 578 149 4,422 306 151 206
  • HTML: 3,695
  • PDF: 578
  • XML: 149
  • Total: 4,422
  • Supplement: 306
  • BibTeX: 151
  • EndNote: 206
Views and downloads (calculated since 12 Mar 2025)
Cumulative views and downloads (calculated since 12 Mar 2025)

Viewed (geographical distribution)

Total article views: 4,422 (including HTML, PDF, and XML) Thereof 4,399 with geography defined and 23 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved (final revised paper)

Latest update: 07 Jul 2026
Download
Short summary
For the balloon-borne detection of particles (diameter 0.4 < Dp < 40 µm), the Universal Cloud and Aerosol Sounding System (UCASS) was used, whose sample flow is determined by GPS-measured ascent rates. In flights, actual UCASS sample flows rarely match the ascent rates. Errors are minimised by real-time detection of the UCASS flows, e.g. by implementing a thermal flow sensor (TFS) within the UCASS. The TFSs were tested in flight and calibrated at up to 10 m s−1 and at variable angles of attack.
Read more
Share
Special issue
The tropopause region in a changing atmosphere (TPChange)...