Zobrazeno 1 - 10
of 801
pro vyhledávání: '"Achatz, P."'
Autor:
Jochum, Felix, Chew, Ray, Lott, François, Voelker, Georg S., Weinkaemmerer, Jan, Achatz, Ulrich
A Lagrangian gravity-wave parameterization (MS-GWaM, Multi-Scale Gravity-Wave Model) that allows for fully transient wave-mean-flow interaction and horizontal propagation is applied to orographic gravity waves for the first time. Both linear and nonl
Externí odkaz:
http://arxiv.org/abs/2408.03139
The representation of subgrid-scale orography is a challenge in the physical parameterization of orographic gravity-wave sources in weather forecasting. A significant hurdle is encoding as much physical information with as simple a representation as
Externí odkaz:
http://arxiv.org/abs/2403.19184
The Internal wave Dissipation, Energy and Mixing (IDEMIX) model presents a novel way of parameterizing internal gravity waves in the atmosphere. Using a continuous full wave spectrum in the energy balance equation and integrating over all vertical wa
Externí odkaz:
http://arxiv.org/abs/2311.13555
The interaction between small-scale waves and a larger-scale flow can be described by a multi-scale theory that forms the basis for a new class of parameterizations of subgrid-scale gravity waves (GW) in weather and climate models. The development of
Externí odkaz:
http://arxiv.org/abs/2310.07334
Publikováno v:
Atmos. Chem. Phys. 24 (2024) 3297-3308
In climate modelling, the reality of simulated flows in the middle atmosphere is largely affected by the model's representation of gravity wave processes that are unresolved, while these processes are usually simplified to facilitate computations. Th
Externí odkaz:
http://arxiv.org/abs/2309.15301
Parametrizations for internal gravity waves in atmospheric models are traditionally subject to a number of simplifications. Most notably, they rely on both neglecting wave propagation and advection in the horizontal direction (single-column assumptio
Externí odkaz:
http://arxiv.org/abs/2309.11257
We present an asymptotic approach for the systematic investigation of the effect of gravity waves (GW) on ice clouds formed through homogeneous nucleation. In particular, we consider high- and mid-frequency GW in the tropopause region driving the for
Externí odkaz:
http://arxiv.org/abs/2304.10206
Autor:
Stefan Achatz, Arne Skerra
Publikováno v:
FEBS Open Bio, Vol 14, Iss 6, Pp 888-905 (2024)
The development of the Escherichia coli K‐12 laboratory strains JM83, JM109 and XL1‐Blue was instrumental in early gene technology. We report the comprehensive genome sequence analysis of JM83 and XL1‐Blue using Illumina and Oxford Nanopore tec
Externí odkaz:
https://doaj.org/article/5b671c6fdfe74658b2eb6380ca72eb83
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 3297-3308 (2024)
In climate modelling, the reality of simulated flows in the middle atmosphere is largely affected by the model's representation of gravity wave processes that are unresolved, while these processes are usually simplified to facili
Externí odkaz:
https://doaj.org/article/648e3e85234f4ebfbbb9020e5f301955
Autor:
Ortega, Evelyn A., Fuenzalida, Jorge, Selimovic, Mirela, Dovzhik, Krishna, Achatz, Lukas, Wengerowsky, Soeren, Shiozaki, Rodrigo F., Neumann, Sebastian Philipp, Bohmann, Martin, Ursin, Rupert
Publikováno v:
J. Opt. Soc. Am. B 40, 165-171 (2023)
The thorough characterization of entangled-photon sources is vital for their optimal use in quantum communication. However, this task is not trivial at telecommunication wavelengths. While cameras and spectrometers are well developed for visible and
Externí odkaz:
http://arxiv.org/abs/2209.00061