Mato Grosso, Brazil's leading corn-producing state, has seen a shift in its export ports, with the 'Northern Arc' of ports in northern Brazil increasing their share to 60.8% of total exports from January to September of 2024, up from 47.6% in 2021. The main ports, Barcarena and Santarem, exported 84.1% of Mato Grosso's corn. However, extreme drought in northern Brazil, expected to persist until 2026 due to climate change and deforestation, is causing concerns for river navigation and future recovery.