Author: Cornwell, Gavin C
Last saved by: Yoo, Ho Jung

This digital collection contains the data used in the manuscript, “Ejection of dust from the ocean as a novel source of potential marine ice nucleating particles.” Data includes single particle composition data collected by an ATOFMS for lab and field experiments, INP concentrations for lab experiments, and modelling simulations output. Data was collected at University of California at San Diego, Colorado State University, and Bodega Marine Laboratory (-123.1 W, 38.3 N, alt 15 m) from Jan 15, 2015 to Jan 1, 2019. Data was analyzed in Matlab (v. 2016b). Additional questions about this dataset should be directed to Kim Prather (kprather@ucsd.edu).

ATOFMS Data

The .txt files contain the data for single particle composition as measured by an aerosol time-of-flight mass spectrometer (ATOFMS). There are three separate files: (1) experiments in the miniMART with NaCl-solution doped with ATD; (2) natural seawater experiments in a MART; and (3) field data collected at Bodega Marine Laboratory from January 15-March 8, 2015 (-123.1 W, 38.3 N, alt 15 m). Data was processed and analyzed in Matlab 2016b with the toolkit FATES.

Timestamp				Date and time that particle was collected in format yyyymmddHHMMSS
Dva (um)	 			Particle aerodynamic diameter, in microns
Particle type				1 = SSA, 2 = Dust, 3 = Dust mixed with SS (CalWater-2015 only)

INP Data

This excel file contains ice nucleating particle analysis presented in this study. The first sheet shows the results of experiments from a miniMART sea spray aerosol generation tank, using a NaCl solution doped with Arizonta test dust. The second sheets shows the compiled data from the field and lab experiments shown in Figure 4 of the manuscript. Particle surface areas were determined using an APS. 

Simulations

These files contain the simulation results run in the Community Atmospheric Model v5, a component of the Community Earth Systems Model v1.2.2. Data has not been corrected to the atmospheric loading as described in the manuscript. Files are in netcdf (version 4) format. Each contains the monthly fresh and ocean-emitted dust emissions, concentrations, and deposition amounts. Data for sea spray emissions is contained in a separate file. File naming is ‘ltXXd_EFYYYY.nc’ where XX and YYYY are the lifetime and enrichment factor variables. Also, XX=1 denotes a lifetime of 1 day, while XX=01 denotes a lifetime of 0.1 days.