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Southern Hemisphere

Posted inEditors' Highlights

The Crust Travels to the Earth’s Core and Back in Record Time

by Vincent Salters 16 December 20228 February 2023

Subduction of continental crust around the Gondwana supercontinent may explain the mantle Dupal anomaly of the southern hemisphere.

The dark blue orb of Neptune is viewed by Voyager 2 at an upward angle from the south pole. A dark navy storm spot, the Great Dark Spot, is just to the right of the center of the planet, and white high-altitude clouds are scattered around the planet.
Posted inNews

Diagnosing Neptune’s Chilly Summer

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 28 April 202228 April 2022

A pandemic project analyzing a trove of infrared images revealed an unexplained phenomenon taking place in Neptune’s atmosphere.

The meeting point of the Pacific Ocean and the Tasman Sea
Posted inResearch Spotlights

Current History: Exploring the Past of the Tasman Leakage

Elizabeth Thompson by Elizabeth Thompson 17 November 20211 February 2022

A new study sheds light on an important Pacific-to-Atlantic connecting current, including the global changes that led to its flowing that ushered in near-modern ocean circulation.

Posted inEditors' Highlights

Is Earth’s Albedo Symmetric Between the Hemispheres?

by Sarah Kang 11 August 202122 April 2022

The two hemispheres feature the same planetary albedo despite a larger land fraction in the north, because storms over the southern ocean are cloudier than their northern counterparts.

Phytoplankton bloom over the study area in the South Pacific Ocean
Posted inResearch Spotlights

Southern Hemisphere Sediments Show Surprising Pliocene Cyclicity

by Terri Cook 25 April 201926 January 2023

New, high-resolution paleoclimate reconstructions with 100,000-year rhythms may offer insights into how Earth’s climate system operated during a time when the planet was warmer than it is today.

Eddies in the Southern Hemisphere jet stream
Posted inResearch Spotlights

Estimating the Likelihood of Future Temperature Extremes

by Terri Cook 14 February 201912 January 2022

A prototype model allows scientists to investigate how wind eddies and other atmospheric phenomena may affect the prevalence of heat waves and cold snaps in the Southern Hemisphere.

Penguins track ocean currents with sensors
Posted inScience Updates

Can We Crack the Climate Code of the Southern Polar Region?

by A. L. Khan, T. J. Bracegirdle and J. L. Russell 20 June 201825 April 2022

The #GreatAntarcticClimateHack; La Jolla, California, 9–12 October 2017

Posted inEditors' Highlights

Unraveling Hemispheric Ocean Nitrate Supply Pathways

by S. B. Moran 10 April 201827 September 2022

Subsurface measurements of nitrogen and oxygen isotope ratios in nitrate reveal a predominantly southern hemisphere supply of nitrate to the equatorial Pacific.

For 17,000 years, rain has washed sediments down the slopes of New Zealand’s Southern Alps, depositing them in Lake Ohau.
Posted inScience Updates

Shifting Winds Write Their History on a New Zealand Lake Bed

by G. B. Dunbar, M. J. Vandergoes and R. H. Levy 16 May 201715 February 2023

A team of scientists finds a year-by-year record of climate history spanning the past 17,000 years at the bottom of a South Island lake.

Researchers untangle how large-scale convection scales respond to changes in atmospheric ozone.
Posted inResearch Spotlights

Could Stratospheric Ozone Depletion Make Hadley Cells Expand?

by S. Witman 21 April 20171 March 2023

Convection-driven Hadley cells are expanding poleward. Scientists now may have uncovered part of the reason why.

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