Results 181 to 190 of about 888,402 (309)

EnKF and expectation‐maximization based parameter estimation of a convective gravity‐wave parameterization using Strateole 2 constant‐level balloon data

Quarterly Journal of the Royal Meteorological Society, EarlyView.
An offline methodology is applied to estimate parameters of a convective gravity‐wave scheme using momentum flux (MF) observations from constant‐level balloons (left panels: pdfs of east and west MFs in green from observations and black from EnKF). The approach integrates an ensemble Kalman filter with an expectation‐maximization algorithm and permits ...
F. Lott, P. Tandeo, M. Pulido, D. Bardet
wiley   +1 more source

Transmission Characteristics of 80 Gbit/s Nyquist-DWDM System in Atmospheric Turbulence. [PDF]

Sensors (Basel)
Du S, Yang Q, Chen T, Wang T.
europepmc   +1 more source

The physical and synoptic‐dynamical differences between warm days, hot days, and heatwaves during summer in Victoria, Australia

Quarterly Journal of the Royal Meteorological Society, EarlyView.
During the day, there is composite mean cold advection in the boundary layer on warm days (WDs), hot days (HDs) and heatwaves (HWs). There is weaker surface‐sensible heating on HDs and HWs. A nocturnal jet advects warm air on HDs and HWs. There is a strong and slow‐moving upper‐level anticyclone on HWs.
Qinuo Huang, Michael J. Reeder, Christian Jakob, Malcolm J. King   +3 more
wiley   +1 more source

Stability of optical knots in atmospheric turbulence. [PDF]

Nat Commun
Pires DG, Tsvetkov D, Barati Sedeh H, Chandra N, Litchinitser NM.   +4 more
europepmc   +1 more source

Modulation of turbulence and mesoscale structure in nested large‐eddy simulations with a gray‐zone parent domain

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The cell perturbation (CP) method mitigate mesoscale structural perturbations entering large‐eddy simulations (LES) from gray‐zone parent domains. The turbulent kinetic energy (TKE) bias‐filtering effect of CP increases with nesting ratio and is most pronounced under weakly convective conditions.
Jung‐Hee Ryu, Song‐Lak Kang
wiley   +1 more source

Automatic Quantification of Atmospheric Turbulence Intensity in Space-Time Domain. [PDF]

Sensors (Basel)
Gulich D, Tebaldi M, Sierra-Sosa D.
europepmc   +1 more source

Characteristics of upper‐level updrafts and downdrafts in the anvils of tropical deep convective clouds

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study investigates the thermodynamic and microphysical characteristics of updrafts and downdrafts of tropical deep convective anvil clouds using in situ measurements. We found that parts of the downdrafts are in ice supersaturation in these clouds.
Sreehari Kizhuveettil, Jordi Vila‐Guerau de Arellano, Martina Krämer, Armin Afchine, Luiz A. T. Machado, Martin Zöger, Wiebke Frey   +6 more
wiley   +1 more source

Augmenting atmospheric turbulence effects on thermal-adapted deep object detection models. [PDF]

Sci Rep
Uzun E, Akagündüz E.
europepmc   +1 more source

Further development of adaptive parameter tuning in the numerical weather prediction models of Deutscher Wetterdienst

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The introduction of adaptive parameter tuning in the numerical weather prediction models of DWD in 2022 substantially improved the forecast quality of near‐surface variables like 2‐m temperature and 2‐m humidity. Since 2023, refinements and extensions, primarily affecting the surface evaporation and its diurnal cycle, have led to further advances ...
Günther Zängl
wiley   +1 more source

Spectral location for the universal scaling regime in Martian atmospheric turbulence. [PDF]

Commun Earth Environ
Coimbra MCY, de la Torre Juárez M, McKeon BJ, Marín M, Murdoch N, Navarro S, Rodríguez-Manfredi JA, Stott A.   +7 more
europepmc   +1 more source