Tyynela, J. and von Lerber, Annakaisa . Validation of Microphysical Snow Models Using In Situ, Multifrequency, and Dual-Polarization Radar Measurements in Finland. J. Geophys. Res.-Atmos.. WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 2169-8996

Full text not available from this repository.

Abstract

As complex forward models for snow have become common in radar-based retrievals, there is a demand to validate these models in different environments. In this study, we perform a qualitative, general validation for nine different snow models that have been published and are available to users. The chosen models span a variety of different snow types, such as aggregates, rimed aggregates, melted aggregates, graupel, and single crystals, mainly because these particles are commonly observed in the Finnish climate. Fitted power law formulas for mass, fall velocity, aspect ratio, and area ratio are compared between the models and 5-year winter measurements in the Hyytiala forestry field station in Finland. We also compare the backscattering properties of the models to triple-frequency dual-polarization radar measurements during the Biogenic Aerosols Effects on Clouds and Climate campaign in 2014. We find that the denser models, regardless of the exact shapes, fit the in situ measurements best due to the prevalence of rime in the falling snow. However, when comparing also to the triple-frequency radar measurements at X, Ka, and W bands, and the linear depolarization ratio at Ka band, the physical snow models fit overall better than the empirical ones.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Tyynela, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
von Lerber, AnnakaisaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-124462
DOI: 10.1029/2019JD030721
Journal or Publication Title: J. Geophys. Res.-Atmos.
Publisher: AMER GEOPHYSICAL UNION
Place of Publication: WASHINGTON
ISSN: 2169-8996
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
ICE-CLOUD PROPERTIES; SCATTERING PROPERTIES; WAVELENGTH RADAR; MICROWAVE-SCATTERING; SNOWFLAKES; SIGNATURES; PARTICLES; AGGREGATE; RETRIEVAL; BACKSCATTERINGMultiple languages
Meteorology & Atmospheric SciencesMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/12446

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item