Data for: Low temperature ice nucleation of sea spray and secondary marine aerosols under cirrus cloud conditions

Sea spray aerosols (SSA) represent one of the most abundant aerosol types on a global scale and have been observed at all altitudes including the upper troposphere. SSA has been explored in recent years as a source of ice nucleating particles (INPs) in cirrus clouds due to the ubiquity of cirrus clouds and the uncertainties in their radiative forcing. This study expands upon previous works on low temperature ice nucleation of SSA by investigating the effects of atmospheric aging of SSA and the ice nucleating activity of newly formed secondary marine aerosols (SMA) using an oxidation flow reactor. Polydisperse aerosol distributions were generated from a Marine Aerosol Reference Tank (MART) filled with 120 L of real or artificial seawater and were dried to very low relative humidity to crystallize the salt constituents of SSA prior to their subsequent freezing, which was measured using a Continuous Flow Diffusion Chamber (CFDC). Results show that for both primary SSA (pSSA), and the aged ..., , , **README for “Low Temperature Ice Nucleation of Sea Spray and Secondary Marine Aerosols under Cirrus Cloud Conditions”**
 
Ryan Patnaude
Postdoctoral Fellow
Colorado State University
Department of Atmospheric Science
1371 Campus Delivery, Fort Collins, CO 80526
[e-mail]
[https://orcid.org/0000-0003-3129-8279](https://orcid.org/0000-0003-3129-8279)
 
**1.0        Data Set Overview**
 
These measurements were from experiments conducted at Colorado State University to better understand the ice nucleating ability of sea spray and secondary marine aerosols at cirrus cloud temperatures. This archive is for the Colorado State University continuous flow diffusion chamber (CFDC) instrument, and aerosol particle data from aerodynamic particle sizer (APS) and scanning mobility particle sizer (SMPS) instruments. The experiments were conducted between March 3^rd and March 17^th of 2021.
 
Experimental days:
03/04/2021 – 03/04/2021: Artificial seawater (ASW) wit...,