Role of K-feldspar and quartz in global ice nucleation by mineral dust in mixed-phase clouds
-
Published:2023-02-02
Issue:3
Volume:23
Page:1785-1801
-
ISSN:1680-7324
-
Container-title:Atmospheric Chemistry and Physics
-
language:en
-
Short-container-title:Atmos. Chem. Phys.
Author:
Chatziparaschos Marios, Daskalakis NikosORCID, Myriokefalitakis SteliosORCID, Kalivitis NikosORCID, Nenes AthanasiosORCID, Gonçalves Ageitos MaríaORCID, Costa-Surós MontserratORCID, Pérez García-Pando CarlosORCID, Zanoli Medea, Vrekoussis MihalisORCID, Kanakidou MariaORCID
Abstract
Abstract. 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 ∼ 51 % of the
observations gathered from different campaigns within 1 order of magnitude
and ∼ 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.
Funder
European Regional Development Fund Horizon 2020
Publisher
Copernicus GmbH
Subject
Atmospheric Science
Reference103 articles.
1. Abdelkader, M., Metzger, S., Steil, B., Klingmüller, K., Tost, H., Pozzer, A., Stenchikov, G., Barrie, L., and Lelieveld, J.: Sensitivity of transatlantic dust transport to chemical aging and related atmospheric processes, Atmos. Chem. Phys., 17, 3799–3821, https://doi.org/10.5194/acp-17-3799-2017, 2017. 2. Albani, S., Mahowald, N. M., Perry, A. T., Scanza, R. A., Zender, C. S.,
G.Heavens, N., V. Maggi, J. F. K., and L.Otto-Bliesner, and B.: Improved
dust representation in the CommunityAtmosphere Model, J. Adv. Model. Earth
Sy, 6, 92–95, https://doi.org/10.1002/2013MS000279, 2014. 3. Arimoto, R., Duce, R. A., Ray, B. J., Ellis, W. G., Cullen, J. D., and Merrill, J. T.: Trace elements in the atmosphere over the North Atlantic, J. Geophys. Res., 100, 1199–1213, https://doi.org/10.1029/94JD02618, 1995. 4. Atkinson, J. D., Murray, B. J., Woodhouse, M. T., Whale, T. F., Baustian, K.
J., Carslaw, K. S., Dobbie, S., O'Sullivan, D., and Malkin, T. L.: The
importance of feldspar for ice nucleation by mineral dust in mixed-phase
clouds, Nature, 498, 355–358, https://doi.org/10.1038/nature12278, 2013. 5. Barahona, D. and Nenes, A.: Parameterizing the competition between homogeneous and heterogeneous freezing in ice cloud formation – polydisperse ice nuclei, Atmos. Chem. Phys., 9, 5933–5948, https://doi.org/10.5194/acp-9-5933-2009, 2009.
Cited by
8 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
|
|