The first microwave and submillimetre closure study using particle models of oriented ice hydrometeors to simulate polarimetric measurements of ice clouds
Abstract GHz, and a variety of in situ instruments. Of particular interest to this study are the large V–H polarised brightness temperature differences measured from ISMAR above a thick frontal ice cloud. Previous studies combining radar and passive submillimetre measurements have not considered polarisation differences. Moreover, they have assumed particle habits a priori. We aim to test whether the large V–H measurements can be simulated successfully by using an atmospheric model consistent with in situ microphysics. GHz. However, it was required that a proportion of the particles were changed in order to increase the V–H polarised brightness temperature differences. Thus, we incorporated millimetre-sized dendritic crystals, as these particles were observed in the probe imagery. At the second dual-polarised channel of 664 GHz, the brightness temperature depressions were generally simulated at the correct locations; however, the simulated V–H was too large. This work shows that multi-frequency polarisation information could be used to infer realistic particle shapes, orientations, and representations of the split between single crystals and aggregates within the cloud.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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The first microwave and submillimetre closure study using particle models of oriented ice hydrometeors to simulate polarimetric measurements of ice clouds ; volume:17 ; number:11 ; year:2024 ; pages:3533-3552 ; extent:20
Atmospheric measurement techniques ; 17, Heft 11 (2024), 3533-3552 (gesamt 20)
- Urheber
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McCusker, Karina
Baran, Anthony J.
Westbrook, Chris
Fox, Stuart
Eriksson, Patrick
Cotton, Richard
Delanoë, Julien
Ewald, Florian
- DOI
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10.5194/amt-17-3533-2024
- URN
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urn:nbn:de:101:1-2408051418105.268428699824
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 10:52 MESZ
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Beteiligte
- McCusker, Karina
- Baran, Anthony J.
- Westbrook, Chris
- Fox, Stuart
- Eriksson, Patrick
- Cotton, Richard
- Delanoë, Julien
- Ewald, Florian
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