This is a dataset consisting of the ice-nucleating particle measurements made during the cruise to the north pole in 2018 on board the Oden ice breaker.  
Other datasets from this cruise can be located in the Bolin database: 

Leck, C., et al. (2018), Data from expedition Arctic Ocean, 2018, in Bolin Centre Database, edited, doi:10.17043/oden-ao-2018-expedition-1.

We have included:
1. The log of the filter times that gives the start and end time associated with each filter.
2. A zip file containing the INP concentration spectra corresponding to each filter
3. The surface area concentrations derived from size distribution measurements corresponding to each filter
4. The active site densities corresponding to each filter. 
5. The SHARK data including the radiosonde, OPC and INP data.