Precipitation records in Galápagos sediments

Based on hydrogen isotope ratios from algae and mangrove lipids buried in Galápagos lake sediments, researchers report that the southward migration of the Intertropical Convergence Zone, an equatorial cloud band responsible for seasonal precipitation in the tropics, likely caused high rainfall in the tropical Pacific during the Little Ice Age later than previously estimated, whereas shifts in El Niño Southern Oscillation drove maritime precipitation patterns earlier in the Common Era, suggesting that climate change influences tropical Pacific precipitation. - See at PNAS.org

Article #15-16271: “Galápagos hydroclimate of the Common Era from paired microalgal and mangrove biomarker 2H/1H values,” by Daniel B. Nelson and Julian P. Sachs.