Results 41 to 50 of about 730 (175)

Recommendations for the design of in situ sampling strategies to reconstruct fine-scale ocean currents in the context of SWOT satellite mission

open access: yesFrontiers in Marine Science, 2023
The new Surface Water and Ocean Topography (SWOT) satellite mission aims to provide sea surface height (SSH) measurements in two dimensions along a wide-swath altimeter track with an expected effective resolution down to 15–30 km.
Bàrbara Barceló-Llull, Ananda Pascual
doaj   +1 more source

Lake Morphometry Influences the Accuracy of SWOT Estimates of Water Level

open access: yesGeophysical 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

On eddy viscosity, energy cascades, and the horizontal resolution of gridded satellite altimeter products [PDF]

open access: yes, 2013
Author Posting. © American Meteorological Society, 2013. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 43 (
Richman, James G.   +8 more
core   +1 more source

Performances Study of Interferometric Radar Altimeters: from the Instrument to the Global Mission Definition

open access: yesSensors, 2006
The main limitations of standard nadir-looking radar altimeters have been knownfor long. They include the lack of coverage (intertrack distance of typically 150 km for theT/P / Jason tandem), and the spatial resolution (typically 2 km for T/P and Jason),
Anny Cazenave   +5 more
doaj   +1 more source

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

open access: yesEarth 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   +4 more
wiley   +1 more source

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

open access: yesWater 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   +3 more
wiley   +1 more source

An Empirical Algorithm to Retrieve Significant Wave Height from Sentinel-1 Synthetic Aperture Radar Imagery Collected under Cyclonic Conditions

open access: yesRemote Sensing, 2018
In this study, an empirical algorithm is proposed to retrieve significant wave height (SWH) from dual-polarization Sentinel-1 (S-1) synthetic aperture radar (SAR) imagery collected under cyclonic conditions.
Weizeng Shao   +6 more
doaj   +1 more source

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

open access: yesGeophysical 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   +5 more
wiley   +1 more source

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

open access: yesGeophysical 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

Development and Implementation of the Hyperbolic Pretracker [PDF]

open access: yes, 2011
This report details the progress made on the design and implementation of a hyperbolic pretracker specifically for the Envisat RA-2 altimeter. First considerable care was taken to construct a waveform simulator whose characteristics matched those of the ...
Quartly, Graham
core  

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