Wintertime Airborne Measurements of Ice Nucleating Particles in the High Arctic: A Hint to a Marine, Biogenic Source for Ice Nucleating Particles.

Hartmann, M., Adachi, K., Eppers, O., Haas, C., Herber, A., Holzinger, R., Hünerbein, A., Jäkel, E., Jentzsch, C., Pinxteren, M., Wex, H., Willmes, S. and Stratmann, F. (2020) Wintertime Airborne Measurements of Ice Nucleating Particles in the High Arctic: A Hint to a Marine, Biogenic Source for Ice Nucleating Particles. Open Access Geophysical Research Letters, 47 (13). e2020GL087770. DOI 10.1029/2020GL087770.

[thumbnail of Hartmann.pdf]
Preview
Text
Hartmann.pdf - Published Version
Available under License Creative Commons: Attribution 4.0.

Download (2MB) | Preview
[thumbnail of Supporting information]
Preview
Text (Supporting information)
grl60754-sup-0001-text_si-s01.pdf - Supplemental Material
Available under License Creative Commons: Attribution 4.0.

Download (19MB) | Preview

Supplementary data:

Abstract

Ice nucleating particles (INPs) affect the radiative properties of cold clouds. Knowledge concerning their concentration above ground level and their potential sources is scarce. Here we present the first highly temperature resolved ice nucleation spectra of airborne samples from an aircraft campaign during late winter in 2018. Most INP spectra featured low concentration levels (<3 · 10−4 L−1 at −15°C). However, we also found INP concentrations of up to 1.8·10−2 L−1 at −15°C and freezing onsets as high as −7.5°C for samples mainly from the marine boundary layer. Shape and onset temperature of the ice nucleation spectra of those samples as well as heat sensitivity hint at biogenic INP. Colocated measurements additionally indicate a local marine influence rather than long-range transport. Our results suggest that even in late winter above 80°N a local marine source for biogenic INP, which can efficiently nucleate ice at high temperatures, is present.

Document Type: Article
Keywords: Ice nucleating particles, arctic marine boundary layer
Refereed: Yes
Open Access Journal?: No
Publisher: AGU (American Geophysical Union), Wiley
Projects: CATS
Date Deposited: 15 Jul 2021 09:47
Last Modified: 08 Feb 2023 09:29
URI: https://oceanrep.geomar.de/id/eprint/53031

Actions (login required)

View Item View Item