Journal Highlights

Exploring the mismatch between modeled and observed Antarctic sea ice area

Editor’s Highlight—

 

This paper helps to show that ice shelf melting is important in the ability of climate models to simulate the positive Antarctic sea ice trends. The authors perform a series of modeling experiments to simulate the effect of freshwater input from Antarctic ice shelves on the modeled trend of sea-ice extent. They find that forcing the circum-Antarctic ocean with a linearly increasing rate of freshwater input can reverse the modeled negative trend in sea-ice extent, a scenario that current Earth System Models struggle to reproduce. They also find that accounting for the latent heat required to melt the ice shelves by the ocean leads to a more positive trend in the modeled sea-ice extent.

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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