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@ARTICLE{Kalisch:825098,
author = {Kalisch, Silvio and Chun, H.-Y. and Ern, M. and Preusse, P.
and Trinh, Thai and Eckermann, S. D. and Riese, Martin},
title = {{C}omparison of simulated and observed convective gravity
waves},
journal = {Journal of geophysical research / Atmospheres},
volume = {121},
number = {22},
issn = {2169-897X},
address = {Hoboken, NJ},
publisher = {Wiley},
reportid = {FZJ-2016-07575},
pages = {13,474 - 13,492},
year = {2016},
abstract = {Gravity waves (GWs) from convection have horizontal
wavelengths typically shorter than 100 km. Resolving these
waves in state-of-the-art atmospheric models still remains
challenging. Also, their time-dependent excitation process
cannot be represented by a common GW drag parametrization
with static launch distribution. Thus, the aim of this paper
is to investigate the excitation and three-dimensional
propagation of GWs forced by deep convection in the
troposphere and estimate their influence on the middle
atmosphere. For that purpose, the GW ray tracer Gravity-wave
Regional Or Global Ray Tracer (GROGRAT) has been coupled to
the Yonsei convective GW source model. The remaining free
model parameters have been constrained by measurements. This
work led to a coupled convective GW model representing
convective GWs forced from small cells of deep convection up
to large-scale convective clusters. In order to compare our
simulation results with observed global distributions of
momentum flux, limitations of satellite instruments were
taken into account: The observational filter of a
limb-viewing satellite instrument restricts measurements of
GWs to waves with horizontal wavelengths longer than 100 km.
Convective GWs, however, often have shorter wavelengths.
This effect is taken into account when comparing simulated
and observable GW spectra. We find good overall agreement
between simulated and observed GW global distributions, if
superimposed with a nonorographic background spectrum for
higher-latitude coverage. Our findings indicate that parts
of the convective GW spectrum can indeed be observed by
limb-sounding satellites.},
cin = {IEK-7},
ddc = {550},
cid = {I:(DE-Juel1)IEK-7-20101013},
pnm = {244 - Composition and dynamics of the upper troposphere and
middle atmosphere (POF3-244) / HITEC - Helmholtz
Interdisciplinary Doctoral Training in Energy and Climate
Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF3-244 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000393127800015},
doi = {10.1002/2016JD025235},
url = {https://juser.fz-juelich.de/record/825098},
}