How an ocean climate cycle favored Harvey

SCIENCE Human factors may prolong storm-boosting Atlantic Multidecadal Oscillation phase Hurricane Harvey was the first major hurricane to make landfall in the United States since 2005, but in some ways, it was long overdue. For decades now, tropical storms have been getting a boost from a powerful but still mysterious long-term cycle in North Atlantic … More How an ocean climate cycle favored Harvey

California rains put spotlight on atmospheric rivers

Forecasts of moisture conduits could aid water managers California has no mighty rivers like the Mississippi, but rivers of a kind are flooding the state. Since the new year, more than a meter of precipitation has fallen in some places, unleashing floods, triggering landslides, and, last week, bringing the emergency spillway of the Oroville Dam, … More California rains put spotlight on atmospheric rivers

Crystal clocks

SCIENCE How smudged crystals offer windows into a volcano’s eruptive past. Crystals in volcanic rocks contain clocks that offer clues to the volcano’s plumbing and past behavior. The technique, called diffusion chronometry, is catching on among volcanologists. It depends on understanding how the crystals grew out of a magma soup deep underground, accreting layers that … More Crystal clocks