Cornwell, Gavin C.; Sultana, Camille M.; Prank, Marje; Cochran, Richard E.; Hill, Thomas C. J.; Schill, Gregg P.; DeMott, Paul J.; Mahowald, Natalie; Prather, Kimberly A. (2020). Data from: Ejection of dust from the ocean as a potential source of marine ice nucleating particles. In Center for Aerosol Impacts on Chemistry of the Environment (CAICE). UC San Diego Library Digital Collections. https://doi.org/10.6075/J0T1522V

Abstract: Oceans are, generally, relatively weak sources of ice nucleating particles (INPs). Thus, dust transported from terrestrial regions can dominate atmospheric INP concentrations even in remote marine regions. Studies of ocean-emitted INPs have focused upon sea spray aerosols containing biogenic species. Even though large concentrations of dust are transported over marine regions, resuspended dust has never been explicitly considered as another possible source of ocean-emitted INPs. Current models assume that deposited dust is not re-emitted from surface waters. Our laboratory studies of aerosol particles produced from coastal seawater and synthetic seawater doped with dust show that dust can indeed be ejected from water during bubble bursting. INP concentration measurements show these ejected dust particles retain ice nucleating activity. Doping synthetic seawater to simulate a strong dust deposition event produced INPs active at temperatures colder than -13 ºC and INP concentrations one to two orders of magnitude greater than either lab sea spray or marine boundary layer measurements. The relevance of these laboratory findings is highlighted by single particle composition measurements along the California coast where at least 9% of dust particles were mixed with sea salt. Additionally, global modeling studies show that resuspension of dust from the ocean could exert the most impact over the Southern Ocean, where ocean-emitted INPs are thought to dominate atmospheric INP populations. More work characterizing the factors governing the resuspension of dust particles is required to understand the potential impact upon clouds.

This digital object 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).

• 2015 to 2019

• 2020

• Cornwell, Gavin C.

• Prather, Kimberly A.

• DeMott, Paul J.
• Hill, Thomas C. J.
• Mahowald, Natalie
• Prank, Marje
• Schill, Gregg P.
• Sultana, Camille M.

• Cochran, Richard E.

• Center For Western Weather and Water Extremes (CW3E)

National Science Foundation through the Centers of Chemical Innovation Program via the Center for Aerosol Impacts on Chemistry of the Environment (CHE-1305427) and the CalWater2 field campaign (NSF AGS-1451347).

• Global

• Dust
• Ice nucleating particles
• Ocean
• Sea spray aerosol

• data
• text

• English

Camille Sultana: http://orcid.org/0000-0003-4038-5518

Gavin Cornwell: https://orcid.org/0000-0002-4774-1282

Kim Prather: https://orcid.org/0000-0003-3048-9890

Paul J. DeMott: https://orcid.org/0000-0002-3719-1889

Primary associated publication

• Cornwell, Gavin C.; Sultana, Camille M.; Prank, Marje; Cochran, Richard E.; Hill, Thomas C. J.; Schill, Gregg P.; DeMott, Paul J.; Mahowald, Natalie; Prather, Kimberly A. (2020). Ejection of Dust From the Ocean as a Potential Source of Marine Ice Nucleating Particles. Journal of Geophysical Research: Oceans, 125, e2020JD033073. https://doi.org/10.1029/2020JD033073

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2022-07-07