[1] This study is mainly aimed at proposing objective tools for the identification and tracking of three-dimensional eddy structures. It is conducted with a high-resolution numerical model of the ocean region around South Africa, and emphasis is put on Cape Basin anticyclones and cyclones thought to be actively implicated in the Indian-Atlantic interocean exchange. We settle on wavelet analysis...

The aim of the New Zealand Southern ALPs EXperiment (SALPEX) was to study chiefly, but not exclusively, how the Southern Alps promote precipitation on the upwind side of the mountain chain in pre-frontal northwesterly airstreams. The third and most extensive field phase of the experiment ran for three weeks during October 1996, and documented two events in considerable detail. The present paper...

This paper investigates – using the GEOS-Chem global chemical transport model how surface deposition of divalent mercury species (Hg(II)) is influenced by Hg(II) production at different atmospheric heights. The authors show that surface deposition is dominated by production in the upper and middle troposphere and highlight the large role of subtropical anticyclones as a global reservoir of Hg(I...

Sea level anomaly from satellite altimetry and in situ near-surface drifter velocities, combined within a simplified equation of horizontal momentum, reveal peculiar dynamical balances in the strongest known currents of the World Ocean. In the Gulf Stream, this study demonstrates the importance of centrifugal force due to the curvature of the streamlines. After filtering out Ekman currents (usi...