Research Data Leeds Repository

Atmospheric ice-nucleating particles in the eastern Mediterranean

Tarn, Mark D. and Wyld, Bethany V. and Reicher, Naama and Alayof, Matan and Gat, Daniella and Sanchez-Marroquin, Alberto and Sikora, Sebastien N. F. and Harrison, Alexander D. and Rudich, Yinon and Murray, Benjamin J. (2024) Atmospheric ice-nucleating particles in the eastern Mediterranean. University of Leeds. [Dataset] https://doi.org/10.5518/1487

Dataset description

While the atmosphere in the eastern Mediterranean is part of the dust belt, it encounters air masses from Europe, the Mediterranean Sea, and the Sahara and Arabian Desert that bring with them a whole host of potential dust and bioaerosol compositions and concentrations via long-range transport. The consequential changes in the populations of ice-nucleating particles (INPs), aerosols that influence weather and climate by the triggering of freezing in supercooled cloud water droplets, including in the convective cloud systems in the region, are not so well understood beyond the influence of desert dust storms in increasing INP concentrations. Here, we undertook an intensive INP measurement campaign in Israel to monitor changes in concentrations and activity from four major air masses, including the potential for activity from biological INPs. Our findings show that the INP activity in the region is likely dominated by the K-feldspar mineral content, with southwesterly air masses from the Sahara and easterly air masses from the Arabian Desert markedly increasing both aerosol and INP concentrations. Most intriguingly, a handful of air masses that passed over the Nile Delta and the northern Fertile Crescent, regions containing fertile agricultural soils and wetlands, brought high INP concentrations with strong indicators of biological activity. These results suggest that the Fertile Crescent could be a sporadic source of high-temperature biological ice-nucleating activity across the region that could periodically dominate the otherwise K-feldspar-controlled INP environment. We propose that these findings warrant further exploration in future studies in the region, which may be particularly pertinent given the ongoing desertification of the Fertile Crescent that could reveal further sources of dust and fertile soil-based INPs in the eastern Mediterranean region. The Dataset contains ice-nucleating particle concentrations and activities measured throughout the two-week campaign, alongside aerosol particle concentrations, and bacterial and fungal aerosol concentrations.

Subjects:	F000 - Physical sciences > F700 - Science of aquatic & terrestrial environments > F750 - Environmental sciences
Divisions:	Faculty of Environment > School of Earth and Environment
License:	Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited:	11 Jun 2024 12:32
URI:	https://archive.researchdata.leeds.ac.uk/id/eprint/1296
Additional details Additional details Creators: Creators ORCID Other ID Email Primary affiliation Primary affiliation ID Primary affiliation ID type Secondary affiliation Secondary affiliation ID Secondary affiliation ID type Tarn, Mark D. https://orcid.org/0000-0001-5827-4125 University of Leeds https://ror.org/024mrxd33 ror Wyld, Bethany V. https://orcid.org/0000-0002-1549-4686 University of Leeds https://ror.org/024mrxd33 ror Reicher, Naama https://orcid.org/0000-0003-4555-1343 Weizmann Institute of Science https://ror.org/0316ej306 ror Alayof, Matan Weizmann Institute of Science https://ror.org/0316ej306 ror Gat, Daniella https://orcid.org/0000-0002-0595-4626 Weizmann Institute of Science https://ror.org/0316ej306 ror Sanchez-Marroquin, Alberto https://orcid.org/0000-0003-4510-4551 University of Leeds https://ror.org/024mrxd33 ror Sikora, Sebastien N. F. https://orcid.org/0000-0002-8560-8837 University of Leeds https://ror.org/024mrxd33 ror Harrison, Alexander D. https://orcid.org/0000-0003-1522-0391 University of Leeds https://ror.org/024mrxd33 ror Rudich, Yinon https://orcid.org/0000-0003-3149-0201 Weizmann Institute of Science https://ror.org/0316ej306 ror Murray, Benjamin J. https://orcid.org/0000-0002-8198-8131 University of Leeds https://ror.org/024mrxd33 ror Type of data: Dataset Research funders: Weizmann-UK Making Connections Program, European Research Council, Engineering and Physical Sciences Research Council Grant numbers: 648661 MarineIce, EP/R513258/1 Publication date: 2024 Resource language: English Publisher: University of Leeds Contact Email Address: m.d.tarn@leeds.ac.uk Last Modified: 11 Jun 2024 22:35

Files

Documentation

readme [8kB] readme [8kB] readme [8kB] Visible to: Anyone File name: README_Tarn_2024.txt Content type: Documentation Mime-Type: text/plain License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 8kB

Data

Data for Figure 1 [17kB] Data for Figure 1 [17kB] Data for Figure 1 [17kB] Visible to: Anyone File name: Dataset_for_Fig_1.csv Content type: Data Description: Background-corrected ice-nucleating particle concentrations Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 17kB

Data for Figure 2f [344kB] Data for Figure 2f [344kB] Data for Figure 2f [344kB] Visible to: Anyone File name: Dataset_for_Fig_2f.csv Content type: Data Description: Aerosol particle concentrations measured using an OPC Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 344kB

Data for Figure 2g [697kB] Data for Figure 2g [697kB] Data for Figure 2g [697kB] Visible to: Anyone File name: Dataset_for_Fig_2g.csv Content type: Data Description: Particle mass concentrations measured using an OPC Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 697kB

Data for Figure 2h [3MB] Data for Figure 2h [3MB] Data for Figure 2h [3MB] Visible to: Anyone File name: Dataset_for_Fig_2h.csv Content type: Data Description: Particle size distributions measured using an OPC Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 3MB

Data for Figure 2i [5kB] Data for Figure 2i [5kB] Data for Figure 2i [5kB] Visible to: Anyone File name: Dataset_for_Fig_2i.csv Content type: Data Description: Time series of ice-nucleating particle concentrations Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 5kB

Data for Figure 4 [15kB] Data for Figure 4 [15kB] Data for Figure 4 [15kB] Visible to: Anyone File name: Dataset_for_Fig_4.csv Content type: Data Description: Droplet freezing temperatures for heated and non-heated 3 hour filter samples Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 15kB

Data for Figure 5a [1kB] Data for Figure 5a [1kB] Data for Figure 5a [1kB] Visible to: Anyone File name: Dataset_for_Fig_5a.csv Content type: Data Description: Bacterial aerosol concentrations Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 1kB

Data for Figure 5b [1kB] Data for Figure 5b [1kB] Data for Figure 5b [1kB] Visible to: Anyone File name: Dataset_for_Fig_5b.csv Content type: Data Description: Fungal aerosol concentrations Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 1kB

Data for Figure 6 [19kB] Data for Figure 6 [19kB] Data for Figure 6 [19kB] Visible to: Anyone File name: Dataset_for_Fig_6.csv Content type: Data Description: Ice-active surface site densities of aerosol samples Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 19kB

Supplement Data [7MB] Supplement Data [7MB] Supplement Data [7MB] Visible to: Anyone File name: Supplement_datasets.zip Content type: Data Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 7MB