Earth/Environment

Earth’s iron heart can melt, plus Atlantic weather and more ice thinning in this week’s news

Deep ocean jets drive Atlantic weather Regular weather patterns in the tropical Atlantic are driven by deep ocean currents, not the winds and other atmospheric factors that cause El Ni±o and similar cycles. An international research team now finds evidence that 4.5-year cycles in temperature, precipitation and winds are driven by deep jets in equatorial waters that carry energy upward.