Julika Zinke, Matthew Salter, Paul Zieger, E. Douglas Nilsson
This dataset was created in a series of laboratory experiments to investigate the role of salinity and temperature on aerosol production and surface bubble spectra.
Sea spray aerosols were generated from artificial seawater in a temperature-controlled sea spray generation chamber using a plunging jet. The aerosol and surface bubble size distributions were monitored while the salinity was decreased from 35 to 0 g/kg (at a constant temperature T = 20 °C). This experiment was repeated at a higher salinity resolution in the range 10 – 5 g/kg where significant impacts of changing salinity on the aerosol and bubbles were expected.
Additionally, three temperature ramps were conducted at a range of salinities representative of the global average oceanic salinity as well as lower salinity waters such as the Black Sea and the Baltic Sea, where the water temperature was slowly decreased from 30 to 0 °C.
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Citation
Julika Zinke, Matthew Salter, Paul Zieger, E. Douglas Nilsson (2022) Laboratory data on the effect of salinity and temperature on sea spray aerosol production. Dataset version 3. Bolin Centre Database. https://doi.org/10.17043/zinke-2021-laboratory-3
References
Zinke J, Nilsson ED, Zieger P, Salter ME (2021) The effect of seawater salinity and seawater temperature on sea salt aerosol production. Submitted to JGR Atmospheres
Zieger P, Väisänen O, Corbin J, Partridge DG, Bastelberger S, Mousavi-Fard M, Rosati B, Gysel M, Krieger UK, Leck C, Nenes A, Riipinen I, Virtanen A, Salter ME (2017) Revising the hygroscopicity of inorganic sea salt particles. Nature Communications 8:15883. https://doi.org/10.1038/ncomms15883
Data description
The dataset includes six xlsx spreadsheet files:
Salinity experiments
The file salinity-experiments.xlsx contains two worksheets for the two sets of salinity experiments. The size distributions, that were measured with a differential mobility particle sizer (DMPS) and optical particle size spectrometer (OPSS), were combined at 350 nm and averaged for each salinity, and are given in the form dN/dlogDp.
Bubble density
The file bubble-density.xlsx provides averaged bubble densities in the field of view at each salinity.
Temperature ramps at distinct salinities
The file temperature-ramps.xlsx contains four work sheets with averaged particle size distributions (in the form dN/dlogDp) for the temperature ramps at the salinities 35 g/kg , 17 g/kg and 6 g/kg (the temperature ramp at salinity 35 g/kg was repeated).
The measured diameters are dry diameters and were shape corrected using a dynamic shape factor calculated according to Zieger et al. (2017).
Raw data
The files DMPS_data_raw.xlsx and OPSS_data_raw.xlsx contain each two work sheets with the raw data over the entire periods of both sets of experiments (in the form dN/dlogDp), that were measured by the differential mobility particle sizer (DMPS) and optical particle size spectrometer (OPSS). The time frames of each experiment are given in the file time_frames.xlsx.
Comments
Size-resolved particle concentrations were measured with a custom-built differential mobility particle sizer (DMPS) that measures particles with diameter 15 nm < Dp < 900 nm and an optical particle size spectrometer (OPSS) that measures particles 300 nm < Dp < 10 μm. These size distributions were combined at a diameter of 350 nm. Additionally, the total number concentration was measured with a condensation particle counter.
The bubble size distribution at the water surface was determined photographically.
Version history
Version 3
The files salinity-experiments.xlsx and temperature-ramps.xlsx have been updated. We have now loss-corrected the entire size distribution resulting from the combination of DMPS and OPSS data.
Version 2
The files salinity-experiments.xlsx and temperature-ramps.xlsx have been updated. The size distribution measured from the DMPS was loss-corrected for particle-sizes < 100 nm where density effects are negligible. Furthermore, we have corrected the data for an offset in the OPSS calibration between the experiments. Lastly, the size distribution of the DMPS and OPSS were combined at 350 nm instead of 500 nm to avoid multiple charging effects in the DMPS that can occur at particle sizes around 500 nm.
Version 1
Initial release.