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

The marine hydrological cycle: The ocean's floods and droughts

Arnold L. Gordon

Commentary— The sea surface salinity (SSS) displays fluctuations that are not solely in response to local air-sea flux of freshwater but also reflect ocean circulation and mixing processes. Ponte and Vinogradova (2016), using Estimating the Circulation and Climate of the Ocean output, estimate the relative.... more

Glacial moulin formation triggered by rapid lake drainage

Los Alamos National Laboratory

Blog— Widespread fracturing during lake drainage is the dominant cause of ‘moulin’ formation, new research finds Scientists are uncovering the mystery of how, where and when important glacial features called moulins form on the Greenland Ice Sheet. Moulins, vertical conduits that penetrate through the.... more

Rethinking How Water Circulates Between the Oceans and Land

Terri Cook, Freelance Writer

Research Spotlight— A reexamination of the global water cycle shows that tropical coastlines exert a profound influence on atmospheric water circulation by wringing water vapor from the atmosphere. Water plays a crucial role in modulating Earth’s climate by regulating the transfer of energy between.... more

Study suggests heavy rains from tropical cyclones distort the ground below

Olivia Trani

Blog— Torrential rainfall during a tropical cyclone could be responsible for reshaping the shallow layer of Earth’s crust in the days following the storm, according to new research. Earth’s surface is constantly shifting, expanding and compressing in response to atmospheric and hydrologic forces from.... more

Study Finds First Direct Proof of Ozone Hole Recovery

Press Release— Measurements show that a decline in chlorine due to the Montreal Protocol has resulted in about 20 percent less ozone depletion during the Antarctic winter than there was in 2005. For the first time, scientists have shown through direct satellite observations of the ozone hole that levels.... more

Arctic Clouds Highly Sensitive to Air Pollution

Press Release— A new study finds air in the Arctic is extraordinarily sensitive to pollution and particulate matter may spur Arctic cloud formation. In 1870, explorer Adolf Erik Nordenskiöld, trekking across the barren and remote ice cap of Greenland, saw something most people wouldn’t expect in such.... more

Can Large Electric Fields Power Jupiter’s X-ray Auroras?

Emily Underwood, Freelance Writer

Research Spotlight— Electric fields with megavolt potentials in Jupiter’s polar region accelerate particles to 100 times more energy than Earth’s typical auroral particles, a new study finds. Jupiter’s magnetic field is some 20,000 times stronger than Earth’s, thanks to its spinning, metallic hydrogen.... more

Algae Reduce Reflectivity, Enhance Greenland Ice Sheet Melting

Press Release— New research shows algae growing on the Greenland ice sheet significantly reduce the ice sheet’s surface reflectivity and contribute more to its melting than dust or black carbon. New research shows algae growing on the Greenland ice sheet, the Earth’s second-largest ice sheet, significantly.... more

Humans to Blame for Higher Drought Risk in Some Regions

Sarah Stanley, Freelance Writer

Research Spotlight— New observations and analysis dispel remaining doubts that anthropogenic climate change is expanding dry areas in northern midlatitudes. The world’s population relies on the global water cycle for food security and economic prosperity. However, human activities may be jeopardizing.... more

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Featured Special Collection

A Census of Atmospheric Variability from Seconds to Decades 

The atmosphere varies naturally on all length scales from millimeters to thousands of kilometers, and on all time scales from seconds to decades and longer.  This special collection of Geophysical Research Letters synthesizes and summarizes that variability through a phenomenological census.  The collection brings together some of the most influential and definitive papers to have been published in this journal in recent years.  The topics covered include turbulence on time scales of seconds and minutes, gravity waves on time scales of hours, weather systems on time scales of days, atmospheric blocking on time scales of weeks, the Madden–Julian Oscillation on time scales of months, the Quasi-Biennial Oscillation and El Niño–Southern Oscillation on time scales of years, and the North Atlantic, Arctic, Antarctic, Pacific Decadal, and Atlantic Multi-decadal Oscillations on time scales of decades.  The collection is accompanied by a Commentary article, which provides an authoritative, concise, and accessible point of reference for the most important modes of atmospheric variability.

A Census of Atmospheric Variability from Seconds to Decades