Data Files Accompanying:  Isotopic Insights into Organic Composition Differences between Supermicron and Submicron Sea Spray Aerosol
Authors:  Daniel R. Crocker, Chathuri P. Kaluarachchi, Ruochen Cao, Julie Dinasquet, Emily B. Franklin, Clare K. Morris, Tran Nguyen, Ralph R. Torres, Todd R. Martz, Francesca Malfatti, Allen H. Goldstein, Alexei V. Tivanski, Kimberly A. Prather, Mark H. Thiemens
Journal: Environmental Science and Technology

Contact: 
Daniel Crocker, dcrocker@ucsd.edu, Department of Chemistry and Biochemistry, University of California San Diego

Cite as:
Crocker, Daniel R.; Kaluarachchi P. Chathuri; Cao, Ruochen; Dinasquet, Julie; Franklin, Emily  B.; Morris, Clare K.; Nguyen, Tran; Torres, Ralph R.; Martz, Todd R.; Malfatti, Francesca; Goldstein, Allen H.; Tivanski, Alexei V.; Prather, Kimberly A.; Thiemens, Mark H. (2021). Data from: Isotopic Insights into Organic Composition Differences between Supermicron and Submicron Sea Spray Aerosol. In Center for Aerosol Impacts on Chemistry of the Environment (CAICE). UC San Diego Library Digital Collections.
DOI: https://doi.org/10.6075/J0416X7M

This data package contains a data spreadsheet associated with the SeaSCAPE manuscript cited above. The data spreadsheet is in .xslx format with two tabs as described below.


First tab: SSA Measurements

The data values in this tab have been organized into submicron SSA, total suspended particles (TSP), and supermicron SSA. The submicron SSA and TSP were collected on filters during the experiment and the supermicron SSA was collected by taking the difference in their measured values. The data columns corresponding to these three size fractions are described below: 

The first two columns (A and B) of this tab provide the start and end time and date, respectively, for each SSA sample collection. Column C gives the carbon isotope values (d13C) for the SSA samples. Column D gives the SSA carbon concentration in the wave channel by taking the carbon amount measured on the filters and dividing by the total liters of air collected during each sampling period. Column E gives the total SSA mass collected on each filter sample as determined by gravimetric analysis. Column F is the organic mass fraction in SSA calculated by dividing Column D by Column E.

This data can be used to recreate Figure 2 and SI Figure S3 as well as parts of Figure 3, Figure 4, and SI Figure S1.


Second tab: Seawater Measurements

The data values in this tab have been organized into measurements on bulk seawater and measurements on the sea surface microlayer. Column A represents the collection date for each sample. Each sample was collected between 9 and 11 am on the day indicated.


Bulk Seawater Measurements:

Column B shows the particulate organic carbon concentration for particulates between 1 and 2.7 micron diameters. Column C shows the particulate organic carbon concentration for particulates between 2.7 and 10 micron diameters. Column D is the sum of columns B and C and shows the particulate organic carbon concentration for particulates between 1 and 10 micron diameters. Column E gives the carbon isotope values for particulate organic carbon between 1 and 10 µmicron diameters. Column F gives the dissolved organic carbon concentration for organic material with diameters smaller than 0.7 microns. Column G gives the carbon isotope value for the dissolved organic carbon on each day. Column H gives the bacteria concentration in the water column as measured by flow cytometry. Column I gives the measurements of bacterial production that were used to calculate the bacterial carbon demand displayed in the manuscript.

This data can be used to recreate the SeaSCAPE data plotted in Figure 1.


SSML Seawater Measurements:

Column B shows the sea surface microlayer surface tension as measured by the traditional tensiometer technique that probes to a solution depth of greater than 1000 micron. Column C gives the sea surface microlayer surface tension as measured by the novel atomic force microscopy technique that probes to a solution depth of only around 1 
micron.

The combined SSA and seawater measurements can be used to recreate Figures 1-4 as well as SI Figures 1 and 3.