Results 71 to 80 of about 21,732 (225)

Climatic Higher‐Order Balanced Winds Beyond Geostrophic and Gradient Wind Fields

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract We present a novel approach to derive three‐dimensional Climatic Higher‐Order Balanced (CHOB) wind fields from thermodynamic state variables in the free troposphere and stratosphere. The CHOB method is developed for monthly synoptic‐scale wind field estimation, utilizing commonly used balanced winds (geostrophic and gradient wind) enhanced by ...
I. Nimac, J. Unegg, J. Danzer
wiley   +1 more source

Submesoscale transition from geostrophic flows to internal waves in the northwestern Pacific upper ocean

Nature Communications, 2017
Satellite altimeters resolution poorly capture mesoscale signals in the upper ocean. Here, the authors analyse shipboard Acoustic Doppler Current Profiler measurements from the northwest Pacific, and show that balanced geostrophic flows and unbalanced ...
Bo Qiu, Toshiya Nakano, Shuiming Chen, Patrice Klein   +3 more
doaj   +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

A Machine Learning Parameterization for the Internal Gravity Wave Spectrum

Journal of Geophysical Research: Oceans, Volume 131, Issue 5, May 2026.
Abstract We introduce a stochastic model designed to parametrize the spectral properties of internal waves, using two functions that represent the semidiurnal spectral tidal cusps and the energy continuum between the inertial and the buoyancy frequencies.
Yutao Zheng, Matthew D. Rayson, Nicole L. Jones, Lachlan C. Astfalck   +3 more
wiley   +1 more source

Laminar and weakly turbulent oceanic gravity currents performing inertial oscillations [PDF]

Ocean Science, 2012
The small scale dynamics of a weakly turbulent oceanic gravity current is determined. The gravity current considered is initially at rest and adjusts by performing inertial oscillations to a geostrophic mean flow.
A. Wirth
doaj   +1 more source

A barotropic model of eddy saturation

, 2017
"Eddy saturation" refers to a regime in which the total volume transport of an oceanic current is insensitive to the wind stress strength. Baroclinicity is currently believed to be key to the development of an eddy-saturated state.
Constantinou, Navid C.
core   +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

Can Eulerian Eddy Diffusivity Be Inferred From Lagrangian Trajectories?

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 5, May 2026.
Abstract Lagrangian particle trajectories are widely used to characterize tracer dispersion and mixing driven by mesoscale currents (“eddies”), leading to estimates of eddy diffusivity that can in turn be used in non‐eddy‐resolving and eddy‐permitting ocean models.
Yueyang Lu, Igor Kamenkovich, Pavel Berloff   +2 more
wiley   +1 more source

Influence of the geostrophic transport of phosphates on primary production off Baja California (Mexico)

Ciencias Marinas, 2010
We estimated the net flux of inorganic phosphorus (kg P d–1) due to geostrophic transport in the upper 100 m of a control volume (CV) off Baja California (Mexico) during 2003 and 2004. The influence of this flux on integrated primary production (IPP) in
MD Martínez-Gaxiola, R Durazo, G Gaxiola-Castro   +2 more
doaj   +1 more source

Capability Demonstration of a JEDI‐Based System for TEMPO Assimilation: System Description and Evaluation

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 5, May 2026.
Abstract The launch of the Tropospheric Emissions: Monitoring of Pollution (TEMPO) mission in 2023 marked a new era in air quality monitoring by providing high‐frequency, geostationary observations of column NO2 across most of North America. In this study, we present the first implementation of a TEMPO NO2 data assimilation system using the Joint ...
Maryam Abdi‐Oskouei, Jérôme Barré, Shih‐Wei Wei, Sarah Lu, Ashley Griffin, Clementine Hardy Gas, Francois Hebert, Stephen Herbener, Eric Lingerfelt, Evan Parker, Christian Sampson, Steve Vahl, Fabio Diniz, Ben Johnson, Cheng Dang, Yannick Tremolet, Benjamin Ruston, Viral Shah, Emma Knowland, Ricardo Todling, Ronald Gelaro, Caroline Nowlan, Gonzalo Gonzalez Abad, Xiong Liu, Brian McDonald, Kristen Zuraski, Jeff Peischl, Caroline Womack, Laura Judd, Thomas Hanisco, Benjamin Menetrier, Cory Martin, Daniel Holdaway, Anna Shlyaeva, Dom Heinzeller, Steven Pawson, Thomas Auligne   +36 more
wiley   +1 more source