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The study uses the Weather Research and Forecasting Model to simulate the impact of basin-wide agricultural expansion in the La Plata River basin. It finds divergent regional climate responses: the northern region experiences decreased temperatures and precipitation due to increased albedo and moisture advection, while the southern region sees increased temperatures and precipitation due to decreased albedo and altered moisture flux convergence. These changes also influence precipitation patterns over the South Atlantic Ocean.

The study analyzes nearly six years of data from pressure-equipped inverted echo sounders (PIESs) to determine the transport characteristics of the Deep Western Boundary Current (DWBC) at 34.5° S. It finds that the time-mean absolute geostrophic transport is -15 Sv, but the variability is extreme, with a peak-to-peak range from -89 to +50 Sv. This high level of variability, which exceeds the time mean, suggests the influence of coherent vortices or Rossby Wave-like signals.

The study identifies divergent sea surface temperature trends around southern South America between 1982 and 2017, with warming in mid-latitude regions and the Northern Patagonian Shelf, and cooling south of 50°S and on the Southern Patagonian Shelf. These trends became most significant between 2008 and 2017 and are linked to atmospheric forcing and large-scale climate modes including ENSO, the Interdecadal Pacific Oscillation, and the Southern Annular Mode.

Brazil has reframed its South Atlantic strategy to protect significant pre-salt oil and gas deposits, leading to a naval modernisation programme and a 'Blue Amazon' campaign to foster a maritime mentality. This strategy includes pursuing the expansion of its continental shelf through UNCLOS, developing a nuclear-propulsion attack submarine in co-operation with France, and establishing a 'goodwill belt' of defence ties with West African states. Brazil also seeks to revive the South Atlantic Peace and Co-operation Zone (Zopacas) to assert regional leadership and limit the influence of outside powers like NATO.