Cloud condensation nuclei and hygroscopic growth measurement at Mace Head from 2009 to 2010

This dataset reports the results of in situ measurements of cloud condensation nuclei (CCN) number concentration, aerosol chemical composition, aerosol hygroscopic growth factor, particle number size distribution collected from 2009 to 2010 at Mace Head Research Station(53.33° N, 9.90 °W; 21m a.m.s.l; 300m from the waterline). This dataset is discussed in a manuscript titled "The impact of aerosol size-dependent hygroscopicity and mixing state on the cloud condensation nuclei over the Northeast Atlantic" by "Wei Xu, Kirsten. Fossum, Jurgita Ovadnevaite, Chunshui Lin, Ru-Jin Huang, Colin O’Dowd, Darius Ceburnis" which is submitted to Atmospheric Chemistry and Physics.