Browse Journal Highlights

Highlights include enriched and related content of notable journal articles presented on Eos org AGU org AGU On Demand and in AGU journals

New hypothesis for changes in deep-water circulation in the Southern Ocean


Editor’s Highlight—   This study examines changes in deep-water circulation in the Southern Ocean between the last glacial maximum and today, specifically changes in circulation associated with Drake Passage, the deep-water channel between Cape Horn and the South Shetland Islands that connected the.... more

Proxy data used to reconstruct 10,000 years of Indian monsoons

Editors’ Highlight— This paper provides detailed reconstruction of changes in monsoonal precipitation over India over the last 10,000 years and comparison with proxy results. The authors conclude that teleconnections from the equatorial Pacific contributed to, if not accounted for, greater early- to.... more

Cores reveal ocean circulation changes during the last deglaciation

Editor’s Highlight—   This paper discusses the complexity of changes in the Atlantic Meridional Overturning Circulation as reconstructed from cores in the western equatorial Atlantic Ocean. Understanding feedbacks between climate change and Atlantic circulation is of major importance in attempts to.... more

New sediment core reveals details about Cretaceous Oceanic Anoxic Event

Editor’s Highlight—   A newly-drilled sediment core in the Tarfaya Basin, Morocco, has captured an extraordinarily detailed sequence of the Cretaceous Oceanic Anoxic Event 2 (OAE2). This paper presents the results of combined carbon isotopic-micropaleontological-trace metal study on the core. The expanded.... more

Improving Our Understanding of El Niño in a Warm Climate

Jenny Lunn, Contributing Writer

From Research Spotlights— A new study seeks to bring together the strongest features of proxy data and climate models to reduce uncertainties in reconstructions of past El Niño behavior.  The El Niño–Southern Oscillation (ENSO) has been a preoccupation of scientists in recent years. It has.... more

Sediment Cores Reveal Ocean Current’s Past Life

Sarah Witman, Freelance Writer

From Research Spotlights— East Asia’s Black Current may have rerouted in the past 10,000 years or so.  Unlike the blackcurrant (a small, sour berry often made into jellies and jams), the Black Current is a strong, northeast-flowing ocean current between the Philippines and Japan. Also called.... more

Iceberg Surge During Last Deglaciation May Have Had Two Pulses

Sarah Stanley, Freelance Writer

From Research Spotlights— Seafloor sediment cores provide new clues that could help clarify the influence of ice sheet collapse on a period of ocean cooling marked by slowed deepwater circulation.  About 21,000 years ago at the peak of the last ice age, the vast Laurentide Ice Sheet covered.... more

Earth’s Carbon-Climate Feedbacks Varied in Past Warming Episodes

Terri Cook, Freelance Writer

From Research Spotlights— Records from drill holes in the eastern equatorial Pacific indicate that Earth’s orbital eccentricity played an important role in controlling climate as the planet warmed. Embedded within the Earth’s long-term cooling trend over the past 65 million years are several.... more

Ancient Ocean Floor Seashells Improve Model of Past Glaciers

Emily Underwood, Freelance Writer

More accurate reconstruction of ice sheets over the past 150,000 years could help scientists predict future climate change. Every 100,000 years or so over the past million years, relatively small changes in the amount of sunlight that reaches the Arctic region in summer have spurred dramatic shifts.... more