Ekman-driven salt transport as a key mechanism for open-ocean polynya formation at Maud Rise

A Narayanan, F Roquet, ST Gille, B Gülk… - Science …, 2024 - science.org
Open-ocean polynyas formed over the Maud Rise, in the Weddell Sea, during the winters of
2016–2017. Such polynyas are rare events in the Southern Ocean and are associated with …

Open-ocean polynyas and deep convection in the Southern Ocean

WG Cheon, AL Gordon - Scientific reports, 2019 - nature.com
An open-ocean polynya is a large ice-free area surrounded by sea ice. The Maud Rise
Polynya in the Southern Ocean occasionally occurs during the austral winter and spring …

Internal ocean dynamics control the long-term evolution of Weddell Sea Polynya activity

JW Rheinlænder, LH Smedsrud… - Frontiers in …, 2021 - frontiersin.org
Open-ocean polynyas effectively couple the ocean and atmosphere through large ice-free
areas within the sea-ice cover, release vast quantities of oceanic heat, and impact deep …

Sea ice production in the 2016 and 2017 Maud Rise polynyas

L Zhou, C Heuzé, M Mohrmann - Journal of Geophysical …, 2023 - Wiley Online Library
Sea ice production within polynyas, an outcome of the atmosphere‐ice‐ocean interaction, is
a major source of dense water and hence key to the global overturning circulation, but is …

Recent reoccurrence of large open‐ocean polynya on the Maud Rise seamount

B Jena, M Ravichandran… - Geophysical Research …, 2019 - Wiley Online Library
Satellite observations have shown that the largest and most prolonged Maud Rise open‐
ocean polynya since the 1970s appeared on 14 September 2017 (~ 9.3× 103 km2) within …

Impacts of vertical convective mixing schemes and freshwater forcing on the 2016–2017 Maud Rise polynya openings in a regional ocean simulation

B Gülk, F Roquet, AC Naveira Garabato… - Journal of Advances …, 2024 - Wiley Online Library
The correct representation of the Maud Rise open‐ocean polynya in the Weddell Sea
remains a challenge for ocean models. Here we reproduce the most recent polynya …

Antarctic offshore polynyas linked to Southern Hemisphere climate anomalies

EC Campbell, EA Wilson, GWK Moore, SC Riser… - Nature, 2019 - nature.com
Offshore Antarctic polynyas—large openings in the winter sea ice cover—are thought to be
maintained by a rapid ventilation of deep-ocean heat through convective mixing. These rare …

On the generation of Weddell Sea polynyas in a high-resolution Earth system model

P Kurtakoti, M Veneziani, A Stössel, W Weijer… - Journal of …, 2021 - journals.ametsoc.org
Abstract Larger Weddell Sea polynyas (WSPs), differentiated in this study from the smaller
Maud Rise Polynyas (MRPs) that form to the east of the prime meridian in the proximity of …

On the Intermittent Occurrence of Open‐Ocean Polynyas in a Multi‐Century High‐Resolution Preindustrial Earth System Model Simulation

X Diao, A Stössel, P Chang… - Journal of …, 2022 - Wiley Online Library
Abstract A 500‐year‐long high‐resolution Community Earth System Model simulation under
preindustrial radiative forcing produces Maud Rise Polynyas (MRPs) and Weddell Sea …

Early winter triggering of the Maud Rise polynya

L Zhou, C Heuzé, M Mohrmann - Geophysical Research Letters, 2022 - Wiley Online Library
Abstract What triggers Maud Rise polynya, a large opening in the winter Antarctic sea ice, is
still debated. We show that the upcoming opening of all Maud Rise polynyas can be …