Results 51 to 60 of about 1,017 (205)

Distinct Dominant Intraseasonal Oscillation Modes Modulate South China's Persistent Extreme Precipitation in Rainy Season

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract This study investigates mechanisms by which distinct intraseasonal oscillation modes drive regional persistent extreme precipitation events over South China during the rainy season. Based on periodic characteristics of 54 such events, two dominant modes are identified: 12–20‐day (type‐1) and 25–50‐day (type‐2) oscillations. Although comparable
Wei Lu, Yao Ha, Yimin Zhu, Haixia Dai, Yijia Hu, Xiangrong Yang, Yudi Liu, Zhong Zhong   +7 more
wiley   +1 more source

Multiscale dynamics-informed deep learning reconstruction of global ocean offshore near-surface current

GIScience & Remote Sensing
Achieving exceptional accuracy and high-resolution reconstruction of sea surface currents is critical for investigating complex oceanic dynamic processes.
Linyao Ge, Ge Chen, Guiyu Wang, Chuanchuan Cao, Xiaoyan Chen, Baoxiang Huang   +5 more
doaj   +1 more source

Topographic generation of submesoscale centrifugal instability and energy dissipation

Nature Communications, 2016
Most of the ocean kinetic energy is contained in the large scale geostrophic currents and the pathways of energy toward dissipation are still in question.
Jonathan Gula, M. Jeroen Molemaker, James C. McWilliams   +2 more
doaj   +1 more source

Estimating ocean currents from the joint reconstruction of absolute dynamic topography and sea surface temperature through deep learning algorithms [PDF]

Ocean Science
Our study focuses on absolute dynamic topography (ADT) and sea surface temperature (SST) mapping from satellite observations, with the primary objective of improving the satellite-derived ADT (and derived geostrophic currents) spatial resolution ...
D. Ciani, C. Fanelli, B. Buongiorno Nardelli   +2 more
doaj   +1 more source

Assessing Subseasonal Predictions of Stratosphere‐Troposphere Coupling of GraphCast

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract The rapid development of artificial intelligence weather forecasting models (AIWFMs) has revolutionized weather prediction. GraphCast, a leading AIWFM, outperforms state‐of‐the‐art physics‐based numerical models at the surface and in the lower troposphere.
Zheng Wu
wiley   +1 more source

On the global estimates of geostrophic and Ekman surface currents [PDF]

Limnology and Oceanography: Fluids and Environments, 2013
Lay AbstractA fundamental goal of physical oceanography is to provide a primary description of global ocean circulation. Historically, ocean surface currents were inferred from ship drift measurements, mainly in relation with navigational requirements. Ocean circulation was shown to play an important role in the last decades for studying the transport ...
Sudre, Joel, Maes, Christophe, Garçon, Veronique   +2 more
openaire   +3 more sources

Prolonged Low‐Salinity in the Eastern Arabian Sea Associated With the 2020–2023 Triple‐Dip La Niña

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Prolonged low salinity was observed in the eastern Arabian Sea (EAS) from autumn 2020 to autumn 2023, closely associated with the 2020–2023 triple‐dip La Niña. Oceanic planetary wave bridge was a key driver of the extremely low salinity during winter, whereas freshwater flux remained an important contributor in other seasons.
Hua Zheng, Lisuo Hu, Yue Yu, Ruibin Ding, Xinyang Wang, Hanshi Wang, Kun Zhang, Deng Zhang, Binjie Wu, Ying Jin, Tao Zhang   +10 more
wiley   +1 more source

The Propagation of Internal Waves in a Geostrophic Current

Journal of Physical Oceanography, 1981
Abstract The paper presents the WKB theory of internal wave propagation in a large-scale geostrophic mean flow with vertical as well as horizontal shear. As an application a mean flow with isopycnals having constant slope but arbitrary spacing is considered and the behavior of waves at turning points and critical layers is discussed.
openaire   +2 more sources

Overturning Circulation of the North Atlantic Subtropical Gyre Computed in Density Coordinates at 26°N

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract The RAPID‐MOCHA‐WBTS array in the subtropical gyre of the North Atlantic has measured the Atlantic Meridional Overturning Circulation (AMOC) and the overturning streamfunction in depth coordinates since 2004. Here we show that the overturning streamfunction in density coordinates can be estimated by combining data from the RAPID‐MOCHA‐WBTS ...
D. A. Smeed, W. E. Johns, R. H. Smith, T. Petit, E. L. McDonagh, D. Rayner, D. L. Volkov, S. Elipot, J. B. Kajtar, B. A. King, Y. L. Firing, B. I. Moat   +11 more
wiley   +1 more source

Surface currents in the Mid-Atlantic Bight: the role of the Gulf Stream versus wind

Frontiers in Marine Science
Surface currents of the Mid-Atlantic Bight (MAB) were studied using high-frequency radar (HFR) observations at 6 km resolution during a 5-year period (2020–2024). The study’s focus on the role of the Gulf Stream (GS) contrasts with most past studies that
Tal Ezer
doaj   +1 more source