We performed an experimental study of large-scale wakes in a rotating shallow-water layer. Standard particle image velocimetry was used to measure the horizontal velocity field, while a laser-induced fluorescence technique was used to measure the geopotential deviation i.e., the interface deviation . According to these measurements, we were able to quantify the dynamics in a wide region of para...

Ice-Tethered Profilers (ITP), deployed in the Arctic Ocean between 2004 and 2013, have provided detailed temperature and salinity measurements of an assortment of halocline eddies. A total of 127 mesoscale eddies have been detected, 95% of which were anticyclones, the majority of which had anomalously cold cores. These cold-core anticyclonic eddies were observed in the Beaufort Gyre region (Can...

Within the context of the rotating shallow water equations, it is shown how initially unbalanced states possessing certain symmetries dynamically evolve to lose those symmetries during nonlinear geostrophic adjustment. Using conservation law methods, it is demonstrated that the adjustment of equal and opposite ~circular! mass imbalances results in a balanced end state where cyclones are stronge...

When floods ravage Asian monsoon regions in summer, megadroughts often attack extratropical North America, which feature an intercontinental contrasting precipitation anomaly between Asia and North America. However, the characteristics of the contrasting Asian-North American (CANA) precipitation anomalies and associated mechanisms have not been investigated specifically. In this article, we fir...

[1] We investigate the intraseasonal (30–90 day) variations in satellite-observed tropical total ozone (O3) and their connection to theMadden-Julian Oscillation (MJO). Tropical total O3 intraseasonal variations are large ( ±10 DU) and comparable to those in annual and interannual time scales. These O3 anomalies are mainly evident in the subtropics over the Pacific and eastern; hemisphere and pr...

The current knowledge about spatial and temporal dynamics of the Black Sea's thermohaline structure is incomplete because of missing data and sparse distribution of existing measurements in space and time. This study presents 56 year continuous simulations of the Black Sea's hydrodynamics using the 3D General Estuarine Transport Model (GETM), without incorporating any relaxation toward climatol...

A method is proposed for reconstructing the full vector velocity eld (i.e., the three velocity components) in the gaseous disks of spiral galaxies from observed radial velocities. The method is based on Fourier analysis of the observed velocity eld and interpretation of the resulting Fourier harmonics in the framework of a model accounting for motion in the spiral arms. The model is based on th...

Abstract July-September rainfall is a key component of Ethiopia’s annual and source variability throughout inland Greater Horn Africa. In this study we investigate the relative influences Mascarene (MH) South Atlantic (AH) highs on in covarying region Africa using CHIRPS observed ERA5 reanalysis. We show that mixed metric circulation at 850 hPa these two subtropical anticyclones (AH-MH), better...

The Kuroshio Extension (KE) region is one of the most energetic regions in global ocean where prominent mesoscale dynamics persistently occur. spatial distribution and temporal evolution sea surface temperature (SST) gradient eddies KE are investigated. SST can be applied for identifying fronts, within two times radii composited to quantify impact on frontal activities. Depressed gradients iden...