Gutenberg Open Science: Sensitivity of mixed-phase moderately deep convective clouds to parameterizations of ice formation : an ensemble perspective

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-6567

Full metadata record

DC Field	Value	Language
dc.contributor.author	Miltenberger, Annette K.	-
dc.contributor.author	Field, Paul R.	-
dc.date.accessioned	2021-12-07T08:13:35Z	-
dc.date.available	2021-12-07T08:13:35Z	-
dc.date.issued	2021	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/6577	-
dc.description.abstract	The formation of ice in clouds is an important processes in mixed-phase and ice-phase clouds. Yet, the representation of ice formation in numerical models is highly uncertain. In the last decade, several new parameterizations for heterogeneous freezing have been proposed. However, it is currently unclear what the effect of choosing one parameterization over another is in the context of numerical weather prediction. We conducted high-resolution simulations (Δx=250 m) of moderately deep convective clouds (cloud top ∼−18 ∘C) over the southwestern United Kingdom using several formulations of ice formation and compared the resulting changes in cloud field properties to the spread of an initial condition ensemble for the same case. The strongest impact of altering the ice formation representation is found in the hydrometeor number concentration and mass mixing ratio profiles. While changes in accumulated precipitation are around 10 %, high precipitation rates (95th percentile) vary by 20 %. Using different ice formation representations changes the outgoing short-wave radiation by about 2.9 W m−2 averaged over daylight hours. The choice of a particular representation for ice formation always has a smaller impact then omitting heterogeneous ice formation completely. Excluding the representation of the Hallett–Mossop process or altering the heterogeneous freezing parameterization has an impact of similar magnitude on most cloud macro- and microphysical variables with the exception of the frozen hydrometeor mass mixing ratios and number concentrations. A comparison to the spread of cloud properties in a 10-member high-resolution initial condition ensemble shows that the sensitivity of hydrometeor profiles to the formulation of ice formation processes is larger than sensitivity to initial conditions. In particular, excluding the Hallett–Mossop representation results in profiles clearly different from any in the ensemble. In contrast, the ensemble spread clearly exceeds the changes introduced by using different ice formation representations in accumulated precipitation, precipitation rates, condensed water path, cloud fraction, and outgoing radiation fluxes.	en_GB
dc.description.sponsorship	Open Access-Publizieren Universität Mainz / Universitätsmedizin Mainz	de
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	*
dc.subject.ddc	530 Physik	de_DE
dc.subject.ddc	530 Physics	en_GB
dc.subject.ddc	550 Geowissenschaften	de_DE
dc.subject.ddc	550 Earth sciences	en_GB
dc.title	Sensitivity of mixed-phase moderately deep convective clouds to parameterizations of ice formation : an ensemble perspective	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-6567	-
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 08 Physik, Mathematik u. Informatik	de
jgu.organisation.number	7940	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Atmospheric chemistry and physics	de
jgu.journal.volume	21	de
jgu.journal.issue	5	de
jgu.pages.end	3627	de
jgu.pages.alternative	3642	de
jgu.publisher.year	2021	-
jgu.publisher.name	EGU	de
jgu.publisher.place	Katlenburg-Lindau	de
jgu.publisher.uri	https://doi.org/10.5194/acp-21-3627-2021	de
jgu.publisher.issn	1680-7324	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	530	de
jgu.subject.ddccode	550	de
jgu.publisher.doi	10.5194/acp-21-3627-2021
jgu.organisation.ror	https://ror.org/023b0x485
Appears in collections:	JGU-Publikationen

Files in This Item:

	File	Description	Size	Format
	miltenberger_annette_k.-copernicus-_se-20211203112136450.pdf		2.9 MB	Adobe PDF	View/Open

Show simple item record