Results 111 to 120 of about 173,175 (225)

Satellite Mapping of the Moulin Distribution Across the Entire Greenland Ice Sheet

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Moulins drain meltwater from the surface of the Greenland Ice Sheet (GrIS), affecting subglacial hydrology. However, the moulin distribution across the entire GrIS remains unclear. Using 10‐m Sentinel‐2 imagery from the summer of 2019, we manually mapped GrIS‐wide major moulins, excluding undetectable minor moulins.
Yuhan Wang, Kang Yang, Jianing Wei, Wenzhuo Zhang, Dongyang Du, Wensong Zhang   +5 more
wiley   +1 more source

First Assessment of ICESat‐2 Summer Sea Ice Freeboard With Airborne Validation

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract ICESat‐2 has demonstrated solid performance in retrieving sea ice freeboard during winter, when sea ice surface types are well‐defined and leads provide reliable sea surface height references. Summer retrievals are challenging because melt ponds are not explicitly distinguished in the ATL07 surface classification and may be identified as ice ...
Ellen M. Buckley, Sahra Kacimi, Melinda Webster, Siddarth Harrison, Kutalmis Saylam, Nathan T. Kurtz, Rachel L. Tilling   +6 more
wiley   +1 more source

Basal Melt and Freezing Rates From First Noble Gas Samples Beneath an Ice Shelf

Geophysical Research Letters, 2018
A climatically induced acceleration in ocean‐driven melting of Antarctic ice shelves would have consequences for both the discharge of continental ice into the ocean and thus global sea level, and for the formation of Antarctic Bottom Water and the ...
Oliver Huhn, Tore Hattermann, Peter E. D. Davis, Erich Dunker, Hartmut H. Hellmer, Keith W. Nicholls, Svein Østerhus, Monika Rhein, Michael Schröder, Jürgen Sültenfuß   +9 more
doaj   +1 more source

Structure, Propagation and Variability of the 5‐Day Rossby‐Haurwitz Wave

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract The 5‐day wave is the gravest free Rossby mode predicted by the Laplace shallow water equations, with a latitudinally symmetric, zonal wavenumber one theoretical structure in geopotential extending from pole to pole. It propagates westward along the equator at about 98 m s−1 ${\mathrm{s}}^{-1}$ and was first observed in surface pressure data ...
G. N. Kiladis, R. A. Madden
wiley   +1 more source

Enabling Under Ice Glider Operations: A Backseat Driver Approach

Journal of Field Robotics, Volume 43, Issue 5, Page 3292-3311, August 2026.
ABSTRACT Polar Oceans are key locations for forcing global ocean circulation, influencing both global climate and biogeochemical cycles. Due to restricted access to these seasonally and perennially ice‐covered regions, these areas are severely undersampled.
Yaomei Wang, Benjamin Allsup, Georgios Salavasidis, Stephen Woodward, Adeniyi Adenaya, Mike Smart, Alexis Johnson, Felipe Marques Dos Santos, Jake Ludgate, Daniel Matterson, Alvaro Lorenzo, J. Alexander Brearley, Alexander Brian Phillips   +12 more
wiley   +1 more source

High‐Resolution Particle Imaging Reveals the Importance of Phytodetrital Aggregate Flux and Mesopelagic Grazing for Carbon Storage in the Southern Ocean

Global Biogeochemical Cycles, Volume 40, Issue 8, August 2026.
Abstract The biological, chemical, and physical processes in the mesopelagic zone that impact carbon flux to the deep ocean are poorly understood, particularly in the Southern Ocean, despite their importance to deep ocean carbon storage. Using a CTD‐mounted underwater imaging system, the Underwater Vision Profiler 5, we observed distributions of large ...
S. H. O’Daly, G. M. M. Hennon, T. B. Kelly, R. Kiko, R. M. Lekanoff, J. L. Pretty, S.‐M. Schröder, A. M. P. McDonnell   +7 more
wiley   +1 more source

Preconditioning of Polynya Formation by Ocean Mixing at Maud Rise, Antarctica

Journal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract Antarctic open‐ocean polynyas trigger vigorous wintertime convection, influencing ocean circulation and atmospheric processes. In the Weddell Sea, interaction between the Weddell Gyre and the Maud Rise seamount generates a Taylor column that favors polynya formation.
Xingchi Wang, Alberto C. Naveira Garabato, Bieito Fernández Castro, Xin Wang, Sebastiaan Swart, Marcel Du Plessis, Aditya Narayanan, Alessandro Silvano, Louis Clément, Margaret Ruth Lindeman   +9 more
wiley   +1 more source

Lethal by Design? Resolving Differences Between Experimental and Real‐World Alkalinity Perturbations in Ocean Alkalinity Enhancement

Journal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract Ocean alkalinity enhancement (OAE) aims to mitigate climate change by increasing the chemical capacity of seawater to store anthropogenic CO2. OAE can be implemented through multiple pathways, each of which intentionally modifies marine carbonate chemistry through increases in total alkalinity (TA).
Lennart T. Bach, Michael D. Tyka, Bin Wang, Katja Fennel   +3 more
wiley   +1 more source

Seasonal and Interannual Variability of Antarctic Bottom Water Downstream of the Four Key Formation Regions

Journal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract Antarctic Bottom Water (AABW) is a cold, dense water mass formed around Antarctica that ventilates the global abyssal ocean. Recent studies have reported widespread warming, freshening, and thinning of AABW, yet its temporal variability remains poorly constrained because of sparse observations.
Polina Sholeninova, Adele K. Morrison, Annie Foppert, Andrew McC. Hogg   +3 more
wiley   +1 more source

Assessment of a Finite Volume Discretization of the Horizontal Pressure Gradient Force Beneath Sloping Ice Shelves

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 8, August 2026.
Abstract The accurate computation of pressure gradients in ocean models is essential for simulating ocean and climate processes. Inaccurate computation can result in spurious velocities on the order of real ocean flows, particularly in quiescent ice shelf cavities.
C. K. Yung, R. W. Hallberg, A. Adcroft, A. K. Morrison   +3 more
wiley   +1 more source