Articles | Volume 18, issue 8
Atmos. Chem. Phys., 18, 5307–5320, 2018

Special issue: BACCHUS – Impact of Biogenic versus Anthropogenic emissions...

Atmos. Chem. Phys., 18, 5307–5320, 2018

Research article 19 Apr 2018

Research article | 19 Apr 2018

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

André Welti et al.

Data sets

Time series of ice nuclei concentration at Cape Verde André Welti, Konrad Müller, Zoë L. Fleming, and Frank Stratmann

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.
Final-revised paper