Journal Highlights

Humans to Blame for Higher Drought Risk in Some Regions

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 this critical resource; new research by Douville and Plazzotta confirms that human emissions of greenhouse gases have already begun to alter the water cycle, resulting in a drying trend and increased risk of drought in certain parts of the world....more

-- Sarah Stanley, Freelance Writer,

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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