Results 51 to 60 of about 244 (148)

Wide-Swath Altimetric Satellite Data Assimilation With Correlated-Error Reduction

Frontiers in Marine Science, 2020
For decades now, satellite altimetric observations have been successfully integrated in numerical oceanographic models using data assimilation (DA). So far, sea surface height (SSH) data were provided by one-dimensional nadir altimeters.
Sammy Metref, Emmanuel Cosme, Florian Le Guillou, Julien Le Sommer, Jean-Michel Brankart, Jacques Verron, Jacques Verron   +6 more
doaj   +1 more source

Lake Morphometry Influences the Accuracy of SWOT Estimates of Water Level

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Lake water surface elevation (WSE) data in Sweden are needed to understand water supply and ecosystem services provision. SWOT can complement WSE in situ measurements, but the influence of lake shape on its accuracy remains unclear. We explore the performance of the SWOT pixel‐cloud and this influence across 62 lakes from August 2023 to ...
David Lindao, Fernando Jaramillo
wiley   +1 more source

SWOT Observations Constrain a 4D‐Var State Estimate of the California Current System

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract The Surface Water and Ocean Topography (SWOT) mission provides high‐resolution sea surface height (SSH) observations at 2‐km spacing, resolving submesoscale features typical of ageostrophic motions and associated with instabilities. Here, we demonstrate the assimilation of SWOT data into a regional configuration of the MITgcm for the ...
A. Verdy, S. T. Gille, B. D. Cornuelle, G. Gopalakrishnan, M. R. Mazloff   +4 more
wiley   +1 more source

Streamflow Calibration in Ungauged Basins Using SWOT Discharge and SMAP Surface Soil Moisture Products

Water Resources Research, Volume 62, Issue 7, July 2026.
Abstract Significant advances have been made in using terrestrial remote sensing to reduce random errors in land surface models (LSMs). However, less progress has been made in dealing with systematic LSM errors that are instead correlated with true system states.
Wade T. Crow, Michael Durand, Steve Coss, Rolf H. Reichle   +3 more
wiley   +1 more source

Oceanic Spatio‐Temporal Patterns of Vertical Velocities in the Cape Basin and Agulhas Current Retroflection From Two Years of SWOT Altimetry

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The Surface Water and Ocean Topography (SWOT) satellite provides a groundbreaking view of sea surface height (SSH) across a 120‐km‐wide swath (20‐km nadir gap), opening new opportunities to reconstruct vertical velocities (w) $(w)$. Vertical motions play a central role in redistributing properties, influencing climate and ecosystems. Using the
S. Coadou‐Chaventon, E. Carli, L. Siegelman, S. Swart, R. Schubert, S. Speich   +5 more
wiley   +1 more source

The Potential for Leveraging SWOT‐Mapped Uneven Water Surface Elevations to Enhance ICESat‐2–Derived Lake Levels

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Satellite altimetry is advantageous for measuring water surface elevations (WSE) globally. However, biases of time series can be caused by uneven water surfaces, as nadir pointing measurements are often collected at different locations across a lake.
Chi Hsiang Huang, Huilin Gao
wiley   +1 more source

Revealing Coastal Storm‐Wave Transformations From SWOT HR Observation: The English Channel Case Study

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Swell propagation and transformation across variable bathymetry and coastal obstacles fundamentally control nearshore wave energy redistribution, sediment transport, and shoreline evolution. Conventional satellite altimetry cannot adequately resolve these dynamics, particularly refraction and diffraction as swell transition into shallow waters.
Md Saiful Islam, Emma Imen Turki, Carlos Lopez Solano, Laurent Froideval, Xavier Chartrand, Pascal Matte, Erwin W. J. Bergsma, Benoit Laignel, Nicolas Picot   +8 more
wiley   +1 more source

Block-Circulant Approximation of the Precision Matrix for Assimilating SWOT Altimetry Data

Remote Sensing
The recently deployed Surface Water and Ocean Topography (SWOT) mission for the first time has observed the ocean surface at a spatial resolution of 1 km, thus giving an opportunity to directly monitor submesoscale sea surface height (SSH) variations ...
Max Yaremchuk, Christopher Beattie, Gleb Panteleev, Joseph D’Addezio   +3 more
doaj   +1 more source

An Overview of Tsunami Hazards in the Southwest Pacific Ocean

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
The southwest Pacific region is geologically complex and exhibits all the principal causes of tsunami generation. While contemporary events and historical catalogs indicate that trans‐Pacific tsunamis have affected this area (∼18% of tsunamis reported globally), it is unique in that a large part of the tsunami effects over the ∼200‐year historical ...
Jean H. M. Roger, Bruce E. O. Thomas, Jose Borrero, Brook Tozer, Julien Collot, Samuel Etienne, Catherine Chagué, Patrick D. Nunn, Emily M. Lane, Shaun Williams, David Burbidge, Hannah E. Power, William Power, Bernard Pelletier   +13 more
wiley   +1 more source

Data-Driven Calibration of SWOT’s Systematic Errors: First In-Flight Assessment

Remote Sensing
The SWOT satellite, carrying the KaRIN first wide-swath onboard altimeter, was launched in December 2022, and has now delivered more than a year of surface water elevation data over the ocean and inland lakes/rivers. These data are affected by systematic
Clément Ubelmann, Gérald Dibarboure, Benjamin Flamant, Antoine Delepoulle, Maxime Vayre, Yannice Faugère, Pierre Prandi, Matthias Raynal, Frédéric Briol, Geoffroy Bracher, Emeline Cadier   +10 more
doaj   +1 more source