Below the Pacific Equatorial Undercurrent, anchor a 20 km wide (present upwelling width) trough drogue array to build internal waves, or augment natural internal tide waves, to mix cold and nutrient/iron-rich water to the surface. This can create a natural Equatorialy Symmetric La Niña mode, as occurred naturally in 1998.

See December 2024 AGU Poster Equatorial Undercurrent Mixing Project

Project background:

1. December 2024 AGU abstract: Geoengineering Proposal to Leverage Earth’s Natural Cooling Mechanism

2. Internal Tide Resonance in El Niño Amplification Duke & Werntz 2024. Duke & Werntz 2024 SCIENCE submission August 2024

3. The tropical hypothesis revisited: Is Pacific countercurrent consolidation the common mechanism of global cooling in interannual, millennial, and orbital time scales? John H. Duke, 4-11-2011

4. 2011 World Climate Research Program conference poster presents the hypothesis that tidal forcing is the common mechanism of global cooling in interannual, millennial, and orbital time scales: DUKE POSTER 2011 WCRP conference

5. Do periodic consolidations of Pacific countercurrents trigger global cooling by equatorially symmetric La Niña? Climate of the Past Discussions, 6, 905-961, 2010

6. 2009 Geoengineering proposal to leverage Earth’s natural cooling mechanisms

7. 2008 EGU abstract: A proposal to force vertical mixing of the Pacific Equatorial Undercurrent to create a system of equatorially trapped coupled convection that counteracts global warming

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