Humboldt (Peru–Chile) Current

Assembled from 16 blocks · 2 evidence · 19 related

1. Story
2. The eastern boundary current of the South Pacific subtropical gyre, running north along the coast of Chile and Peru. It is cold for its latitude, and the reason is not the current itself but what the wind does at the coast: alongshore winds drive surface water offshore through Ekman transport, and cold, nutrient-rich water rises from a few hundred metres to replace it. The result is the most productive upwelling system in the world. The northern Humboldt system off Peru holds the largest single-species fishery ever recorded, on the Peruvian anchoveta, and the wider system has in some years supplied on the order of 15 per cent of the global fish catch from about 0.1 per cent of the ocean surface.
3. Knowledge
4. Humboldt (Peru–Chile) Current
5. Coastal and Equatorial Upwelling
6. Connections
7. Coastal and Equatorial Upwelling
8. Humboldt (Peru–Chile) Current
9. Ekman Transport and the Ekman Spiral
10. Thermohaline Circulation
11. El Niño–Southern Oscillation (ENSO)
12. Peruvian Anchoveta (Engraulis ringens)
13. El Niño Advisory in effect at the July 2026 CPC discussion
14. Evidence
15. The northern Humboldt Current upwelling system off Peru holds the world's largest single-species fishery, on the Peruvian anchoveta, with fish production per unit area higher than any other region of the world ocean; the wider system has supplied up to about 15 per cent of the global fish catch in some years from roughly 0.1 per cent of the marine surface. Read via search summary alongside Nature Conservancy and IUCN material; not fetched.
16. The four eastern boundary upwelling systems — California, Canary, Benguela and Humboldt — occupy about 1 per cent of the ocean surface and produce on the order of 20 per cent of the global fish catch. Read via search summary alongside an IUCN review chapter making the same statement; neither source was fetched, and the underlying fisheries accounting was not traced.