A global climatology of ice-nucleating particles under cirrus conditions derived from model simulations with MADE3 in EMAC
-
Published:2022-12-19
Issue:24
Volume:22
Page:15887-15907
-
ISSN:1680-7324
-
Container-title:Atmospheric Chemistry and Physics
-
language:en
-
Short-container-title:Atmos. Chem. Phys.
Author:
Beer Christof G.ORCID, Hendricks Johannes, Righi MattiaORCID
Abstract
Abstract. Atmospheric aerosols can act as ice-nucleating particles (INPs), thereby influencing the formation and the microphysical properties of cirrus clouds, resulting in distinct climate effects. In addition to mineral dust and soot particles, laboratory experiments suggest crystalline ammonium sulfate and glassy organic particles as effective INPs in the cirrus regime. However, the impact of these new particle types at the global scale is still highly uncertain. Here, we present and analyse a global climatology of INPs derived from model simulations performed with a global aerosol–climate model coupled to a two-moment cloud microphysical scheme and a parametrization for aerosol-induced ice formation in cirrus clouds. This global INP climatology comprises mineral dust and soot particles as well as crystalline ammonium sulfate and glassy organics, including a simplified formulation of the particle phase state for the latter. By coupling the different INP types to the microphysical cirrus cloud scheme, their ice nucleation potential under cirrus conditions is analysed, considering possible competition mechanisms between different INPs. The simulated INP concentrations in the range of about 1 to 100 L−1 agree well with in situ observations and other global model studies. We show that INP concentrations of glassy organics and crystalline ammonium sulfate are strongly related to the ambient conditions which often inhibit the glassy or crystalline phase respectively. Our model results suggest that glassy organic particles probably only have a minor influence, as INP concentrations are mostly low in the cirrus regime. On the other hand, crystalline ammonium sulfate often shows large INP concentrations, has the potential to influence ice nucleation in cirrus clouds, and should be taken into account in future model applications.
Funder
Helmholtz Association
Publisher
Copernicus GmbH
Subject
Atmospheric Science
Reference92 articles.
1. Abbatt, J. P. D., Benz, S., Cziczo, D. J., Kanji, Z., Lohmann, U., and
Möhler, O.: Solid Ammonium Sulfate Aerosols as Ice Nuclei: A Pathway for
Cirrus Cloud Formation, Science, 313, 1770–1773,
https://doi.org/10.1126/science.1129726, 2006. a, b 2. Barahona, D., Rodriguez, J., and Nenes, A.: Sensitivity of the global
distribution of cirrus ice crystal concentration to heterogeneous freezing,
J. Geophys. Res.-Atmos., 115, D23213, https://doi.org/10.1029/2010JD014273, 2010. a, b, c 3. Bateman, A. P., Gong, Z., Liu, P., Sato, B., Cirino, G., Zhang, Y., Artaxo, P., Bertram, A. K., Manzi, A. O., Rizzo, L. V., Souza, R. A. F., Zaveri, R. A., and Martin, S. T.: Sub-micrometre particulate matter is primarily in liquid form over Amazon rainforest, Nat. Geosci., 9, 34–37,
https://doi.org/10.1038/ngeo2599, 2015. a 4. Baustian, K., Wise, M., Jensen, E., Schill, G., Freedman, M., and Tolbert, M.: State transformations and ice nucleation in amorphous (semi-) solid organic aerosol, Atmos. Chem. Phys., 13, 5615–5628, https://doi.org/10.5194/acp-13-5615-2013, 2013. a, b 5. Baustian, K. J., Wise, M. E., and Tolbert, M. A.: Depositional ice nucleation
on solid ammonium sulfate and glutaric acid particles, Atmos. Chem. Phys.,
10, 2307–2317, https://doi.org/10.5194/acp-10-2307-2010, 2010. a
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|