Concentration and variability of ice nuclei in the subtropical maritime boundary layer

Welti, André; Müller, Konrad; Fleming, Zoë L.; Stratmann, Frank

doi:https://doi.org/10.5194/acp-18-5307-2018

Articles | Volume 18, issue 8

https://doi.org/10.5194/acp-18-5307-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

BACCHUS – Impact of Biogenic versus Anthropogenic emissions...

https://doi.org/10.5194/acp-18-5307-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 8

Research article

|

19 Apr 2018

Research article |

| 19 Apr 2018

Concentration and variability of ice nuclei in the subtropical maritime boundary layer

André Welti, Konrad Müller, Zoë L. Fleming, and Frank Stratmann

Data sets

Time series of ice nuclei concentration at Cape Verde André Welti, Konrad Müller, Zoë L. Fleming, and Frank Stratmann https://doi.org/10.1594/PANGAEA.887029

Short summary

We report on ambient concentrations of ice nuclei, measured on the Cabo Verde islands. Concentrations are found to exponentially increase by 7 orders of magnitude from −5 to −38 °C. At each temperature, the frequency distribution of observed concentrations can be described by a lognormal distribution, typical for random dilution of substances during transport. Random dilution is found to account for larger fluctuations in IN concentration than seasonal changes and changes in air mass origin.