Calibration and evaluation of a broad supersaturation scanning (BS2) cloud condensation nuclei counter for rapid measurement  of particle hygroscopicity and cloud condensation nuclei (CCN) activity

Kim, Najin; Cheng, Yafang; Ma, Nan; Pöhlker, Mira L.; Klimach, Thomas; Mentel, Thomas F.; Krüger, Ovid O.; Pöschl, Ulrich; Su, Hang

doi:https://doi.org/10.5194/amt-14-6991-2021

Articles | Volume 14, issue 11

https://doi.org/10.5194/amt-14-6991-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-14-6991-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 11

Research article

|

05 Nov 2021

Research article |

| 05 Nov 2021

Calibration and evaluation of a broad supersaturation scanning (BS2) cloud condensation nuclei counter for rapid measurement of particle hygroscopicity and cloud condensation nuclei (CCN) activity

Najin Kim, Yafang Cheng, Nan Ma, Mira L. Pöhlker, Thomas Klimach, Thomas F. Mentel, Ovid O. Krüger, Ulrich Pöschl, and Hang Su

Supplement

https://doi.org/10.5194/amt-14-6991-2021-supplement

Data sets

Data for BS2-CCN calibration experiment Najin Kim https://edmond.mpdl.mpg.de/imeji/collection/ pohD2XdTlrMwzka7

Short summary

A broad supersaturation scanning CCN (BS2-CCN) system, in which particles are exposed to a range of supersaturation simultaneously, can measure a broad range of CCN activity distribution with a high time resolution. We describe how the BS2-CCN system can be effectively calibrated and which factors can affect the calibration curve. Intercomparison experiments between typical DMA-CCN and BS2-CCN measurements to evaluate the BS2-CCN system showed high correlation and good agreement.