A5061639328- Oceanographic and Atmospheric Processes
- Geophysics and Gravity Measurements
- Ocean Waves and Remote Sensing
- Heat Transfer Mechanisms
- Ionosphere and magnetosphere dynamics
- Fluid Dynamics and Vibration Analysis
- Meteorological Phenomena and Simulations
- Heat Transfer and Optimization
- Nanofluid Flow and Heat Transfer
- Fluid Dynamics and Turbulent Flows
- Tropical and Extratropical Cyclones Research
- Methane Hydrates and Related Phenomena
Laboratoire d'Hydrodynamique
2022-2025
Laboratoire de Météorologie Dynamique
2024
Amirkabir University of Technology
2018
The evolution of a Lamb–Oseen vortex is studied in stratified rotating fluid under the complete Coriolis force. In companion paper, it was shown that non-traditional force generates vertical velocity field and vorticity anomaly at critical radius when Froude number larger than unity. Below Rossby $\widetilde {Ro}$ , two-dimensional shear instability next triggered by anomaly. Here, we test robustness this against small three-dimensional perturbations. Direct numerical simulations (DNS) show...
Expanding upon our previous work1, we extend the evaluation of gravity wave parameterization schemes in Atmospheric Component IPSL Climate Model (LMDZ6A) by incorporating comparisons with high-resolution datasets from ICOsahedral Nonhydrostatic Weather and (ICON) Integrated Forecasting System (IFS). The ICON dataset corresponds to ~ 5 km horizontal resolution simulations for spring 2020, coarse-grained a 100 grid (1°). IFS 1 winter 2018, T42 (~2.8°). In both models, assume...
We compare the parameterization schemes that represent gravity waves in Atmospheric Component of IPSL Climate Model (LMDZ6A) and high-resolution ICOsahedral Nonhydrostatic Weather (ICON). Our focus lies assessing capabilities wave drag to predict zonal momentum fluxes derived from ICON. The is run offline using ICON meteorological fields coarse grained a healpix grid with size representative an ESM (around 100km x 100km). then examine temporal mean, horizontal mean stresses predicted by...
We study the dynamics of an initially axisymmetric and vertical Lamb–Oseen vortex in a stratified-rotating fluid under complete Coriolis force on $f$ plane, i.e. presence background rotation both along horizontal directions. By combination direct numerical simulations asymptotic analyses for small rotation, we show that critical layer appears at radius where angular velocity is equal to buoyancy frequency when Froude number larger than unity. This generates invariant which first increases...