Results 31 to 40 of about 23,028 (236)

Applications of Synthetic Aperture Radar to Meteorology and Oceanography Command Operations [PDF]

, 2007
Abstract : Our long-term goal is to employ near-surface wind speed derived from synthetic aperture radar (SAR) images of the sea surface as a marine meteorological research and forecasting tool. That is, we aim to use SAR-derived wind speed (SDWS) images to discover dynamical and morphological characteristics of microscale, mesoscale, and synoptic ...
Nathaniel S. Winstead, George S. Young, Todd D. Sikora   +2 more
openaire   +1 more source

High-Frequency Surface Wave Radar Current Measurement Corrections via Machine Learning and Towed Acoustic Doppler Current Profiler Integration

Applied Sciences
This paper proposes an algorithm based on the long short-term memory (LSTM) network to improve the quality of high-frequency surface wave radar current measurements.
Zhaomin Xiong, Chunlei Wei, Fan Yang, Langfeng Zhu, Rongyong Huang, Jun Wei   +5 more
doaj   +1 more source

Numerical Weather Prediction Ocean Calibration for the Chinese‐French Oceanography Satellite Wind Scatterometer and Wind Retrieval Evaluation

Earth and Space Science, 2021
The rotating fan‐beam architecture wind scatterometer Chinese‐French Oceanography Satellite (CSCAT) onboard the Chinese‐French Oceanography Satellite leads to varying geometries and varying wind retrieval performance across the swath. To assess this, the
Zhen Li, Ad Stoffelen, Anton Verhoef, Jeroen Verspeek   +3 more
doaj   +1 more source

Measurement of Sea Surface Characteristics from Radar Images Using Gradient Methods

Известия высших учебных заведений России: Радиоэлектроника
Introduction. Remote sensing and monitoring of the sea surface are of great importance in such fields, as operational oceanography, environmental monitoring, etc.
K. Yu. Laptev, N. V. Sokolov, V. N. Mikhailov, M. I. Bogachev, E. N. Vorobev   +4 more
doaj   +1 more source

Unambiguous Wind Direction Estimation Method for Shipborne HFSWR Based on Wind Direction Interval Limitation

Remote Sensing, 2023
Due to its maneuverability and agility, the shipborne high-frequency surface wave radar (HFSWR) provides a new way of monitoring large-area marine dynamics and environment information.
Yunfeng Zhang, Yiming Wang, Yonggang Ji, Ming Li   +3 more
doaj   +1 more source

On the remote sensing of oceanic and atmospheric convection in the Greenland Sea by synthetic aperture radar

, 2004
In this paper we discuss characteristic properties of radar signatures of oceanic and atmospheric convection features in the Greenland Sea. If the water surface is clean (no surface films or ice coverage), oceanic and atmospheric features can become ...
Alexei Androssov, Alpers, Androsov, Angelo Rubino, Atkinson, Broecker, Carsey, Fischer, Henning Wehde, Horstmann, Johannessen, Leonid Mitnik, Mahadevan, Marshall, MEDOC Group, Melsheimer, Mitnik, Mitnik, Monaldo, Morawetz, Roland Romeiser, Romanenkov, Romeiser, Romeiser, Sikora, Stefan Kern, Stoffelen, Susanne Ufermann, Ufermann, Ufermann, Wadhams   +30 more
core   +1 more source

Tropical Cyclone Rainfall Spatial Asymmetries in the Lesser Antilles

International Journal of Climatology, EarlyView.
Rainfall is not proportional to the Saffir‐Simpson wind‐based categories. Lower category tropical cyclones (TS, H1, H2 and H3) can generate more intense rainfall than H4 and H5. Rainfall is asymmetric; as a tropical cyclone intensifies or weakens, the location of peak rainfall shifts.
Catherine Nabukulu, Janneke Ettema, Bastian van den Bout, Victor. G. Jetten   +3 more
wiley   +1 more source

Workshop on Hf Radars for Coastal Oceanography

, 2001
Abstract : The long-term goal is to begin an annual workshop series on HF radars that promotes and facilitates interactions among HF radar engineers, scientists and users and publishes new developments with the goal of making HF radars an acceptable and reliable tool for oceanographic applications.
Graber, Hans C., Paduan, Jeffrey D.
openaire   +2 more sources

Skylab S193 and the analysis of the wind field over the ocean [PDF]

, 1972
The present status of the program to provide proof of concept for the idea that simultaneously observed radar scattering cross section measurements and passive microwave measurements can be used to determine the winds in the planetary boundary layer over
Pierson, W. J., Jr.
core   +1 more source

Numerical study on signatures of atmospheric convective cells in radar images of the ocean

, 1999
Current and wind variations at the ocean surface can give rise to a modulation of the sea surface roughness and thus become visible in radar images. The discrimination between radar signatures of oceanic and atmospheric phenomena can be quite difficult ...
Alpers, Alpers, Alpers, Mitnik, Roland Romeiser, Romeiser, Romeiser, Susanne Ufermann, Thompson, Thomson, Trump, Ufermann, Valenzuela, Wright   +13 more
core   +1 more source