Results 31 to 40 of about 21,027 (215)

Turbulence‐resolving simulations of Hurricane Laura (2020): Insights into extreme winds and eyewall turbulence

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
Using high‐resolution turbulence‐resolving simulations, we analyze the wind structure in the eyewall of Hurricane Laura (2020) and validate the results with observational data. Our findings show significant variations in wind speed and turbulence, especially above 50 m.
Miguel Sanchez‐Gomez   +2 more
wiley   +1 more source

A Novel Spaceborne Sliding Spotlight Range Sweep Synthetic Aperture Radar: System and Imaging

open access: yesRemote Sensing, 2017
In this paper, a new Spaceborne Sliding Spotlight Range Sweep Synthetic Aperture Radar (SSS-RSSAR) is proposed to generate a high-resolution image of a Region of Interest (ROI) tilted with respect to the satellite track.
Yan Wang   +3 more
doaj   +1 more source

An Overview of Requirements, Procedures and Current Advances in the Calibration/Validation of Radar Altimeters

open access: yesRemote Sensing, 2021
Analysis of the radar echoes from a spaceborne altimeter gives information on sea surface height, wave height and wind speed, as well as other parameters over land and ice. The first spaceborne radar altimeter was pioneered on Skylab in 1974. Since then,
Graham D. Quartly   +4 more
doaj   +1 more source

Spaceborne Radar Subsurface Imaging in Hyperarid Regions [PDF]

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 1984
Imaging data acquired with the Shuttle Imaging Radar (SIR-A) over the hyperarid region of Egypt/Sudan clearly show surface penetration through the sand cover. Even though absorption does occur in the sand layer, surface refraction leads to a steeper incidence angle at the sand/bedrock interface resulting in a stronger backscatter.
Elachi, Charles   +2 more
openaire   +4 more sources

Selection of the key earth observation sensors and platforms focusing on applications for Polar Regions in the scope of Copernicus system 2020-2030 [PDF]

open access: yes, 2019
An optimal payload selection conducted in the frame of the H2020 ONION project (id 687490) is presented based on the ability to cover the observation needs of the Copernicus system in the time period 2020–2030.
Camps Carmona, Adriano José   +6 more
core   +2 more sources

Impacts of atmospheric river reconnaissance dropsondes on ECMWF Integrated Forecasting System precipitation forecasts

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
Impacts of Atmospheric River Reconnaissance dropsonde observations on precipitation forecasts over the U.S. West Coast are examined in the European Centre for Medium‐Range Weather Forecasts (ECMWF) Integrated Forecasting System (IFS), using observing‐system experiments.
Jia Wang   +7 more
wiley   +1 more source

Leveraging Sparse Autoencoders to Reveal Interpretable Features in Geophysical Models

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Machine learning is an increasingly popular tool in the geosciences, offering new approaches to numerical weather prediction and complex data set analysis. However, as reliance on these techniques grows, pressing questions about model transparency, internal biases, and trust emerge.
Fraser King   +4 more
wiley   +1 more source

Spaceborne Synthetic Aperture Radar for Oceanography

open access: yesEos, Transactions American Geophysical Union, 1982
The book originates from a symposium held at the Applied Physics Laboratory of the Johns Hopkins University in March 1980. The purpose of the symposium was to review the results to date of investigations related to the SEASAT SAR (synthetic aperture radar) experiment and, to quote from the book's foreword, ‘to explore the potential’ of such satellite ...
openaire   +4 more sources

Investigating SAR algorithm for spaceborne interferometric oil spill detection [PDF]

open access: yes, 2016
The environmental damages and recovery of terrestrial ecosystems from oil spills can last decades. Oil spills have been responsible for loss of aquamarine lives, organisms, trees, vegetation, birds and wildlife. Although there are several methods through
Ceriotti, Matteo   +3 more
core  

Do Tropical Cyclone Outer Size Forecasts Improve Simultaneously With Intensity Forecasts?

open access: yesGeophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract The outer size of a tropical cyclone (TC) is important for predicting potential damage caused by the storm, yet improving the size forecast remains challenging. This study evaluates the TC intensity and outer size forecast performance of five numerical models from the National Oceanic and Atmospheric Administration (NOAA) based on 15 ...
Jie Chen   +3 more
wiley   +1 more source

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