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DOI	10.5194/acp-23-1785-2023
	Role of K-feldspar and quartz in global ice nucleation by mineral dust in mixed-phase clouds
	Chatziparaschos, Marios; Daskalakis, Nikos; Myriokefalitakis, Stelios; Kalivitis, Nikos; Nenes, Athanasios; Ageitos, Maria Goncalves; Costa-Suros, Montserrat; Perez Garcia-Pando, Carlos; Zanoli, Medea; Vrekoussis, Mihalis; Kanakidou, Maria
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	1785
结束页码	1801
卷号	23 期号:3 页码:17
英文摘要	Ice-nucleating particles (INPs) enable ice formation, profoundly affecting the microphysical and radiative properties, lifetimes, and precipitation rates of clouds. Mineral dust emitted from arid regions, particularly potassium-containing feldspar (K-feldspar), has been shown to be a very effective INP through immersion freezing in mixed-phase clouds. However, despite the fact that quartz has a significantly lower ice nucleation activity, it is more abundant than K-feldspar in atmospheric desert dust and therefore may be a significant source of INPs. In this contribution, we test this hypothesis by investigating the global and regional importance of quartz as a contributor to INPs in the atmosphere relative to K-feldspar. We have extended a global 3-D chemistry transport model (TM4-ECPL) to predict INP concentrations from both K-feldspar and quartz mineral dust particles with state-of-the-art parameterizations using the ice-active surface-site approach for immersion freezing. Our results show that, although K-feldspar remains the most important contributor to INP concentrations globally, affecting mid-level mixed-phase clouds, the contribution of quartz can also be significant. Quartz dominates the lowest and the highest altitudes of dust-derived INPs, affecting mainly low-level and high-level mixed-phase clouds. The consideration of quartz INPs also improves the comparison between simulations and observations at low temperatures. Our simulated INP concentrations predict similar to 51 % of the observations gathered from different campaigns within 1 order of magnitude and similar to 69 % within 1.5 orders of magnitude, despite the omission of other potentially important INP aerosol precursors like marine bioaerosols. Our findings support the inclusion of quartz in addition to K-feldspar as an INP in climate models and highlight the need for further constraining their abundance in arid soil surfaces along with their abundance, size distribution, and mixing state in the emitted dust atmospheric particles.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000925096700001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273908
作者单位	University of Crete; Foundation for Research & Technology - Hellas (FORTH); Institute of Chemical Engineering Sciences (ICE-HT); University of Bremen; National Observatory of Athens; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; Universitat Politecnica de Catalunya; Barcelona Supercomputer Center (BSC-CNS); Universitat Politecnica de Catalunya; ICREA; University of Bremen
推荐引用方式 GB/T 7714	Chatziparaschos, Marios,Daskalakis, Nikos,Myriokefalitakis, Stelios,et al. Role of K-feldspar and quartz in global ice nucleation by mineral dust in mixed-phase clouds[J],2023,23(3):17.
APA	Chatziparaschos, Marios.,Daskalakis, Nikos.,Myriokefalitakis, Stelios.,Kalivitis, Nikos.,Nenes, Athanasios.,...&Kanakidou, Maria.(2023).Role of K-feldspar and quartz in global ice nucleation by mineral dust in mixed-phase clouds.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(3),17.
MLA	Chatziparaschos, Marios,et al."Role of K-feldspar and quartz in global ice nucleation by mineral dust in mixed-phase clouds".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.3(2023):17.