Results 31 to 40 of about 244 (148)

A Simulation Experiment on In-Situ Observation of Short-Wavelength Scale Dynamic Processes and Potential Applications to Wide-Swath Interferometric Altimetry Validation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Short-wavelength (15–150 km) ocean phenomena are difficult to be observed by conventional altimeter due to the sampling method limited the resolution of the data.
Chen Wang, Fangjie Yu, Zhiyuan Zhuang, Junwu Tang, Hanwei Sun, Ge Chen   +5 more
doaj   +1 more source

Submesoscale oceanic eddy detection in SAR images using context and edge association network

Frontiers in Marine Science, 2022
Oceanic eddies have a non-negligible impact on ocean energy transfer, nutrient distribution, and biological migration in global oceans. The fine detection of oceanic eddies is significant for the development of marine science.
Linghui Xia, Ge Chen, Ge Chen, Xiaoyan Chen, Linyao Ge, Baoxiang Huang, Baoxiang Huang   +6 more
doaj   +1 more source

On the Approximation of Precision Matrices for Wide-Swath Altimetry

Remote Sensing
New observations of ocean surface topography obtained by wide-swath satellite interferometry require new capabilities to process spatially correlated errors in order to assimilate these data into numerical models.
Max Yaremchuk, Christopher Beattie, Gleb Panteleev   +2 more
doaj   +1 more source

Approaches for Joint Retrieval of Wind Speed and Significant Wave Height and Further Improvement for Tiangong-2 Interferometric Imaging Radar Altimeter

Remote Sensing, 2022
The interferometric imaging radar altimeter (InIRA) adopts a short baseline along with small incidence angles to acquire interferometric signals from the sea surface with high accuracy, thus the wide-swath sea surface height (SSH) and backscattering ...
Guo Li, Yunhua Zhang, Xiao Dong
doaj   +1 more source

Using microwave imager observations to improve the ocean temperature in a coupled NWP system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A recent upgrade to the ECMWF IFS has implemented outer‐loop coupling between the atmosphere and the ocean. This work uses this method to pass ocean skin temperature estimates derived from satellite‐borne microwave imagers to the ocean data assimilation system; the updated ocean state is then passed back to the atmospheric system.
Tracy Scanlon, Alan J. Geer, Philip Browne, Patricia de Rosnay, Niels Bormann   +4 more
wiley   +1 more source

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

Frontiers 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

Coupled observation‐operator approximations in outer‐loop coupling data assimilation

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We present a methodology for coupled variational data assimilation that allows the effect of coupled observation operators whilst maintaining separate minimisations across model components. This allows us to constrain the atmosphere, ocean, and sea‐ice components of our coupled model directly from satellite radiances. We illustrate the system in action
P. A. Browne, P. de Rosnay, A. J. Geer, S. Quesada‐Ruiz, T. Scanlon, E. Villeneuve   +5 more
wiley   +1 more source

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

Sensors, 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, Laurent Phalippou, Ernesto Rodriguez, Jean-Claude Souyris, Patrick Vincent, Vivien Enjolras   +5 more
doaj   +1 more source

Satellite Altimetry Reveals an Eddy Train Along the Ross Sea Shelf Break

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Oceanic circulation along the Antarctic shelf break regulates heat and material exchanges between the continental shelf and the open ocean, playing a crucial role in ice shelf melting and global overturning circulation. However, the circulation remains poorly understood due to limited observations.
Xin Wu, Xianxian Han, Zhaomin Wang, Shaojun Zheng, Chengyan Liu   +4 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