Dataset
Data from: Wind-driven emission of marine ice nucleating particles in the Scripps Ocean-Atmosphere Research Simulator (SOARS)
Dryad
01/27/2025
DOI: 10.5061/dryad.1jwstqk4z
Abstract
Sea spray aerosol (SSA) represent one of the most abundant natural aerosol types, contributing significantly to global aerosol mass and aerosol optical depth, as well as to both the magnitude and uncertainty of aerosol radiative forcing. In addition to their direct effects, SSA can also serve as ice nucleating particles (INPs), which are required for the initiation of cloud glaciation at temperatures warmer than ~-36 °C. This study presents initial results from the CHaracterizing Atmosphere-Ocean parameters in SOARS (CHAOS) mesocosm campaign, which was conducted in the new Scripps Ocean-Atmosphere Research Simulator (SOARS) wind-wave channel. SOARS allows for isolation of individual factors, such as wave height, wind speed, water temperature, or biological state, and can carefully vary them in a controlled manner. Here, we focus on the influence of wind speed on the emission of SSA and INPs. In agreement with recent Southern Ocean measurements, online INP observations during CHAOS showed an increasing relationship with wind speed, whereas offline CHAOS INP measurements did not, which may be related to sampling inlet differences. Changes in the INP activated fraction, dominant INP particle morphology, and INP composition were seen to vary with wind. Seawater ice nucleating entity concentrations during CHAOS were stable over time, indicating changes in atmospheric INPs were driven by wind speed and wave-breaking mechanics rather than variations in seawater chemistry or biology. While specific emission mechanisms remain elusive, these observations may help explain some of the variability in INP concentration and composition that have been seen in ambient measurements.
Details
- Title: Subtitle
- Data from: Wind-driven emission of marine ice nucleating particles in the Scripps Ocean-Atmosphere Research Simulator (SOARS)
- Creators
- Kathryn A. Moore - Colorado State UniversityThomas C. J. Hill - Colorado State UniversityChamika K. Madawala - University of IowaRaymond J Leibensperger III - Scripps Institution of OceanographySamantha Greeney - Texas A&M UniversityChristopher D. Cappa - University of California, DavisM. Dale Stokes - Scripps Institution of OceanographyGrant B. Deane - Scripps Institution of OceanographyChristopher Lee - Scripps Institution of OceanographyAlexei V. Tivanski - University of IowaKimberly A. Prather - University of California San DiegoPaul J. DeMott - Colorado State University
- Resource Type
- Dataset
- DOI
- 10.5061/dryad.1jwstqk4z
- Publisher
- Dryad
- Grant note
- CHE-1801971 / National Science Foundation (https://ror.org/021nxhr62) 006784 / National Science Foundation (https://ror.org/021nxhr62)
- Language
- English
- Date published
- 01/27/2025
- Academic Unit
- Chemistry
- Record Identifier
- 9984791076202771
Metrics
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