Aerosol Influence on Mixed-Phase and Ice Clouds: Laboratory, Field, Remote-Sensing and Modeling Studies

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Aerosols".

Deadline for manuscript submissions: closed (30 September 2020) | Viewed by 5825

Special Issue Editors


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Guest Editor
Department of Life, Earth and Environmental Sciences, West Texas A&M University, Canyon, TX 79016, USA
Interests: ice nucleation; bioaerosol; dust; cloud; UAV

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Guest Editor
Pacific Northwest National Laboratory, Richland, WA 99354, USA
Interests: ice nucleation; aerosol science; climate change; CFD

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Guest Editor
Department of Meteorology and Climate Science, San Jose State University, San Jose, CA 95192, USA
Interests: ice and mixed-phase clouds; aircraft-based observations; climate and cloud-resolving model simulations

Special Issue Information

Dear Colleagues

Initiation of primary ice particles through various modes of ice nucleation and precipitation from ice containing clouds has been poorly understood. The observations of atmospheric ice-nucleating particles that govern the heterogeneous nucleation of ice are limited. As a result, there is a lack of appropriate theoretical descriptions of ice particle formation, which is also very difficult to be represented adequately in cloud and climate models.

This important problem has been investigated through combination of multiple approaches, and the session aims to invite contributors to discuss this growing body of literature. Topics include laboratory studies of ice nucleation of various aerosols, new developments of formulations and parameterizations for ice formation, in-situ and remote sensing observations of ice containing clouds, simulations of ice and mixed-phase clouds, aerosol-cloud interaction and their implications towards cloud radiative effects based on cloud-scale, regional and global models. Studies that combine observational and modeling efforts are also welcome.

Dr. Naruki Hiranuma
Dr. Gourihar Kulkarni
Dr. Minghui Diao
Guest Editors

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Keywords

  • ice nucleation
  • freezing
  • cloud
  • ice and mixed-phase clouds
  • secondary ice production
  • aerosol-cloud-climate interaction
  • hydrometeor

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Published Papers (1 paper)

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Research

13 pages, 1337 KiB  
Article
Release of Highly Active Ice Nucleating Biological Particles Associated with Rain
by Ayumi Iwata, Mayu Imura, Moeka Hama, Teruya Maki, Nozomu Tsuchiya, Ryota Kunihisa and Atsushi Matsuki
Atmosphere 2019, 10(10), 605; https://doi.org/10.3390/atmos10100605 - 8 Oct 2019
Cited by 13 | Viewed by 5128
Abstract
Biological particles may play an important role in the climate system by efficiently acting as ice nucleating particles (INPs) at a higher temperature range (e.g., above −20 °C where representative INPs such as mineral dust remain inactive), but there is an obvious lack [...] Read more.
Biological particles may play an important role in the climate system by efficiently acting as ice nucleating particles (INPs) at a higher temperature range (e.g., above −20 °C where representative INPs such as mineral dust remain inactive), but there is an obvious lack of direct evidence that these particles serve in this manner. Here, we collected ambient particles under different weather conditions for identifying INPs that are active above −22 °C. The abundance of such efficient INPs increased during or following rainfall events. The extensive characterization of individual particles by three different analyses (particle morphology and composition, heat sensitivity of ice nucleation activities, and biological fingerprinting by DNA staining) revealed that efficient INPs have distinctly biological characteristics, which differ significantly from more abundant, representative, and relatively less active INPs, such as mineral dust. Additionally, by combining the heat-sensitivity experiments and DNA staining techniques, efficient INPs were found to contain heat-sensitive biomaterials and biological cells. Our findings provide direct evidence that biological particles are preferentially released into the atmosphere during rainfall events and act as important atmospheric INPs at higher temperature ranges (warmer than −22 °C), where typical INPs remain inactive. Full article
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