Publication Date:
2024-01-30
Description:
The animation visualizes pathways of the upper limb of the overturning circulation in the South Atlantic by means of virtual fluid particle trajectories. The animation has been created with ParaView. The trajectories present a subset of the trajectories evaluated in Rühs et al. (2019). They have been calculated by using the ARIANE tool (version 2.2.6; Blanke and Raynauld, 1997; Blanke et al., 1999) in qualitative mode and 5-day mean 3D velocity output from the eddy-rich ocean-sea-ice model configuration INALT20 (experiment KFS044; Schwarzkopf et al., 2019). Specifically, particles were released over the full depth and width of the northward flowing North Brazil current at 6S and were then advected backwards in time until they reach the Pacific Ocean through Drake Passage or the Indian Ocean through the Agulhas Current system. Along-track temperatures were recorded and are visualized by the color of the trajectories (red=warm, blue=cold). The animation shows that water particles flowing from the Indian Ocean to the tropical Atlantic are relative warm, while particles entering from the Pacific Ocean tend to colder – the reason for the frequently used terminology “warm water route” and “cold water route”.
Type:
Video
,
NonPeerReviewed
,
info:eu-repo/semantics/other
Format:
video
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