Detecting nonequilibrium states in atmospheric turbulence

M Wacławczyk, JL Nowak, H Siebert… - Journal of the …, 2022 - journals.ametsoc.org
In this work we show how to retrieve information about temporal changes of turbulence in
the atmosphere based on in situ wind velocity measurements performed by aircraft. We …

Not All Clear Air Turbulence Is Kolmogorov—The Fine‐Scale Nature of Atmospheric Turbulence

P Rodriguez Imazio, PD Mininni… - Journal of …, 2023 - Wiley Online Library
We study a strong clear air turbulence (CAT) event experienced by the German High‐
Altitude Long‐Range research aircraft (HALO) during the Southern Hemisphere Transport …

Clear air turbulence observed across a tropopause fold over the Drake Passage—a case study

P Rodriguez Imazio, A Dörnbrack… - Journal of …, 2022 - Wiley Online Library
An aircraft turbulence encounter over the Drake Passage is investigated by combining
unique high‐frequency flight level data, vertical profiles of a near‐simultaneous radiosonde …

Coupled and decoupled stratocumulus-topped boundary layers: turbulence properties

JL Nowak, H Siebert, KE Szodry… - … Chemistry and Physics, 2021 - acp.copernicus.org
We compare turbulence properties in coupled and decoupled marine stratocumulus-topped
boundary layers (STBLs) using high-resolution in situ measurements performed by the …

Effects of subgrid‐scale turbulence parametrization on the representation of clear‐air turbulence using kilometre‐to hectometre‐scale numerical simulations

L Rogel, D Ricard, É Bazile… - Quarterly Journal of the …, 2023 - Wiley Online Library
A turbulence event arising in a jet exit region above the Belgium–Luxembourg area,
determined from airliner in‐situ measurements, is reproduced using the meteorological …

[HTML][HTML] Estimating the turbulent kinetic energy dissipation rate from one-dimensional velocity measurements in time

M Schröder, T Bätge, E Bodenschatz… - Atmospheric …, 2024 - amt.copernicus.org
The turbulent kinetic energy dissipation rate is one of the most important quantities
characterizing turbulence. Experimental studies of a turbulent flow in terms of the energy …

Cloud Microphysics Investigations with the Cloudkite Laboratory

M Schröder - 2023 - pure.mpg.de
Clouds are crucial to the Earth's radiation budget and energy balance. Inadequately
resolved cloud processes are a major source of uncertainty in weather forecasts and climate …

The ratio of transverse to longitudinal turbulent velocity statistics for aircraft measurements

JL Nowak, M Lothon, DH Lenschow… - …, 2024 - egusphere.copernicus.org
The classical theory of homogeneous isotropic turbulence predicts the ratio of transverse to
longitudinal structure functions or power spectra equal to 4/3 in the inertial subrange. For the …

Investigation of non-equilibrium turbulence decay in the atmospheric boundary layer using Doppler lidar measurements

M Karasewicz, M Wacławczyk… - …, 2024 - egusphere.copernicus.org
This work concerns analysis of turbulence in the Atmospheric Boundary Layer (ABL) short
before and after the sunset. Based on a large set of the Doppler lidar measurements at rural …

Non-equilibrium dissipation scaling in atmospheric turbulence

M Wacławczyk, JL Nowak… - Journal of Physics …, 2022 - iopscience.iop.org
This work is devoted to the detection of non-equilibrium turbulence states in atmospheric
turbulence. The non-equilibrium scaling contradicts the classical Richardson-Kolmogorov …