New insights into the dynamics of ocean features known as deep chlorophyll maxima set the stage for better understanding of their role in carbon cycling.
proxies
Posted inNews
Holy Water: Miracle Accounts and Proxy Data Tell a Climate Story
In 6th century Italy, saints were said to perform an unusual number of water miracles. Paleoclimatological data from a stalagmite may reveal why.
Posted inEditors' Highlights
Tracking Excess Nitrogen with Freshwater Mussels
Mussel shell periostracum and carbonate bound organic matter document seasonal variability in the isotopic composition of riverine suspended particulate organic matter.
Posted inEditors' Vox
Stalagmite Layers Reveal Hidden Climate Stories
A global investigation discovers where annually laminated stalagmites are found, analyzes their growth properties, and explains how they can be best used in Earth science research.
Posted inNews
Podcast: What Tree Rings Can Tell Us About the U.S. Civil War
Climate change–induced drought may have had an influence on the Civil War.
Posted inNews
Geologists Have a New Tool for Reconstructing the Ancient Climate
A new study of seafloor sediments finds that the temperature record in the early Paleozoic corresponds to significant shifts in the diversity of life on Earth.
Posted inNews
Terrestrial Plants Flourished After the Cretaceous–Paleogene Extinction
Compounds in ancient plant leaves tell the story of how an extinction event shaped our planet’s ecosystems.
Posted inNews
A Robust Proxy for Geomagnetic Reversal Rates in Deep Time
The strength of Earth’s magnetic field in the distant past can tell scientists whether the planet’s magnetic poles were steady or prone to frequent reversals.
Posted inNews
Bat Guano Traces Changes in Agriculture and Hurricane Activity
Researchers hiked and rappeled into two caves in Jamaica to collect over 40 kilograms of excrement.
Posted inResearch Spotlights
Improving Proxy Representations of Ocean Properties
Many oceanic properties are not directly observed but are instead estimated using proxy measurements. A new method uses physics-based correlations to reduce uncertainty in this relationship.