ACPD

Atmospheric Chemistry and Physics Discussions

ACPD

Atmos. Chem. Phys. Discuss.

1680-7375

Göttingen, Germany

10.5194/acp-2022-29

Technical Note: A High-Resolution Autonomous Record of Ice Nuclei Concentrations for Fall and Winter at Storm Peak Laboratory

Hodshire

Anna L.

https://orcid.org/0000-0002-5099-3659

¹ Levin

Ezra J. T.

¹ Hallar

A. Gannet

² Rapp

Christopher N.

³ Gilchrist

Dan R.

² McCubbin

Ian

² McMeeking

Gavin R.

Handix Scientific Inc., Fort Collins, CO, 80526, USA

Department of Atmospheric Sciences, University of Utah, Salt Lake City, UT, 84112, USA

Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN, 47907, USA

03 02 2022

2022 1 15

2022

This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/

This article is available from https://acp.copernicus.org/preprints/acp-2022-29/

The full text article is available as a PDF file from https://acp.copernicus.org/preprints/acp-2022-29/acp-2022-29.pdf

High-resolution, long-term measurements of ice nucleating particles (INPs) have been impeded by complex instrumentation that requires a trained on-site technician to operate or analyze offline. We have significantly updated the well-characterized continuous flow diffusion chamber (CFDC) instrument to run autonomously with minimal in-person handling and easy remote access. This new CFDC, the CFDC-Ice Activation Spectrometer (CFDC-IAS) was deployed for four months (October 2020–January 2021) at the mountain-top Storm Peak Laboratory site in Colorado and provided 5-minute resolution measurements daily at target temperatures of −20, −25, and −30 °C. Concentrations of INPs across all temperatures had a median value of 6 per standard liter (sL−1), and a mean of 10 sL−1 with a range of ~0–470 sL−1.

National Aeronautics and Space Administration

80NSSC19C0166

National Science Foundation

AGS-2025215