Results from a measurement study performed in the Tropical Atlantic on board the
RHaMBLe Discovery Cruise D319 are presented. Measurements of aerosol composition,
hygroscopicity and CCN activity were used to test the ability of a single parameter model to
describe water uptake in sub-and supersaturated conditions. It was found that the magnitude
and temporal variability of the sub-saturated water uptake could be well represented using
the non-refractory composition to derive the model input for 2 periods when the large …

Results from a measurement study performed in the Tropical Atlantic on board the
RHaMBLe Discovery Cruise D319 are presented. Measurements of aerosol composition,
hygroscopicity and CCN activity were used to test the ability of a single parameter model to
describe water uptake in sub-and supersaturated conditions. 5 It was found that the
magnitude and variability of the sub-saturated water uptake could be well represented using
the non-refractory composition to derive the model input when most of the aerosol mass is …