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@ARTICLE{Krisch:884899,
author = {Krisch, Isabell and Ern, Manfred and Hoffmann, Lars and
Preusse, Peter and Strube, Cornelia and Ungermann, Jörn and
Woiwode, Wolfgang and Riese, Martin},
title = {{S}uperposition of gravity waves with different propagation
characteristics observed by airborne and space-borne
infrared sounders},
journal = {Atmospheric chemistry and physics / Discussions},
volume = {327},
issn = {1680-7367},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {FZJ-2020-03304},
pages = {-},
year = {2020},
abstract = {A complex gravity wave structure consisting of a
superposition of multiple wave packets was observed above
southern Scandinavia on 28 January 2016 with the Gimballed
Limb Observer for Radiance Imaging of the Atmosphere
(GLORIA). The tomographic measurement capability of GLORIA
enabled a detailed 3-D reconstruction of the gravity wave
field and the identification of multiple wave packets with
different horizontal and vertical scales. The larger-scale
gravity waves with horizontal wavelengths 5 around 400 km
could be characterised using a 3-D wave-decomposition
method. For the characterization of the smaller-scale wave
components with horizontal wavelengths below 200 km, the 3-D
wave-decomposition method needs to be further improved in
the future. For the larger-scale gravity wave components, a
combination of gravity-wave ray-tracing calculations and
ERA5 reanalysis fields identified orography as well as a
jet-exit region and a low pressure system as possible
sources. All gravity waves propagate 10 upward into the
middle stratosphere, but only the orographic waves stay
directly above their source. The comparison with ERA5 also
shows that ray-tracing provides reasonable results even for
such complex cases with multiple overlapping wave packets.
AIRS measurements in the middle stratosphere support these
findings, even though their coarse vertical resolution
barely resolves the observed wave structure in this case
study. The high-resolution GLORIA observations are therefore
an important source of information on gravity wave
characteristics in the upper troposphere and lower
stratosphere region.},
cin = {IEK-7 / JSC},
ddc = {550},
cid = {I:(DE-Juel1)IEK-7-20101013 / I:(DE-Juel1)JSC-20090406},
pnm = {244 - Composition and dynamics of the upper troposphere and
middle atmosphere (POF3-244) / 511 - Computational Science
and Mathematical Methods (POF3-511)},
pid = {G:(DE-HGF)POF3-244 / G:(DE-HGF)POF3-511},
typ = {PUB:(DE-HGF)16},
doi = {10.5194/acp-2020-327},
url = {https://juser.fz-juelich.de/record/884899},
}