Results 91 to 100 of about 66,297 (236)

Lightning Outbreaks at the Mature Stage of Tropical Cyclone: Case Study for Hurricane Dorian (2019)

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.
Abstract The relationship between tropical cyclone (TC) lightning activity and intensity change has been examined for nearly 30 years, yet a clear consensus remains elusive, reflecting the complexity of the processes governing TC lightning. This study investigates the physical mechanisms that triggered inner‐core lightning outbreaks during the mature ...
Taiga Tsukada, John A. Knaff, Steven D. Miller, Patrick Duran, Jonathan Martinez   +4 more
wiley   +1 more source

Seasonal Variability of Precipitating Systems in Four Radar Domains of Northeast Brazil

International Journal of Climatology, Volume 46, Issue 6, May 2026.
This study analyzes the climatology and evaluates how the physical aspects of precipitating systems are influenced by the dry and wet seasons in Northeast Brazil, highlighting seasonal variations in the frequency, size, intensity, and duration of these systems in the regions of Natal, Maceió, Petrolina, and Salvador.
Amanda Carolina da Silva Queiroz, Thiago Souza Biscaro   +1 more
wiley   +1 more source

Analysis of Radar Characteristics and Evolution Mechanisms of Supercells Inducing Three Strong Tornado Events Under Extratropical Cyclone Background

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract On the afternoon of 5 July 2024, under the influence of an extratropical cyclone, a rare triple‐tornado event struck Heze City, Shandong Province, comprising the Dongming tornado (EF3), the Juancheng tornado (EF2), and the Yuncheng tornado (EF3). These tornadoes resulted in five fatalities and substantial economic damage.
Jiwen Zhang, Anhua Jing, Yanzhen Kang, Yongqiang Jiang, Chaohui Chen, Hongrang He, Jie Ding   +6 more
wiley   +1 more source

Observation and Coordination Needs for Current, Near‐Future, and Next Generation Earth‐Observing SAR Systems

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract This paper summarizes an evaluation by experts of how coordination of Earth‐observing Synthetic Aperture Radar (SAR) missions among the world's space agencies could advance toward game‐changing scientific discoveries and fully realizing SAR's practical capability to address many issues facing society.
Cathleen E. Jones, Ake Rosenqvist, Björn Rommen, Magdalena Fitrzyk, Eric Rignot, Bernd Scheuchl, Yujie Zheng, Andrew Hooper, Mark Simons, Tomokazu Kobayashi, Paul Siqueira, Maurizio Santoro, Takeo Tadono, Laura Hess, Heather McNairn, Laura Frulla, Malin Johansson, Wolfgang Dierking, Line Rouyet, Annett Bartsch, Paco Lopez Dekker, Johnny A. Johannessen   +21 more
wiley   +1 more source

Coordinating Complementary Waveforms for Sidelobe Suppression

, 2011
We present a general method for constructing radar transmit pulse trains and receive filters for which the radar point-spread function in delay and Doppler, given by the cross-ambiguity function of the transmit pulse train and the pulse train used in the
Calderbank, Robert, Dang, Wenbing, Howard, Stephen, Moran, William, Pezeshki, Ali   +4 more
core   +1 more source

The Effect of Sea Surface Slicks on the Doppler Spectrum Width of a Backscattered Microwave Signal

Sensors, 2008
The influence of a surface-active substance (SAS) film on the Doppler spectrum width at small incidence angles is theoretically investigated for the first time for microwave radars with narrow-beam and knife-beam antenna patterns.
Eugeny Meshkov, Mikhail Kanevsky, Vladimir Karaev   +2 more
doaj  

A Multi-Source Radar Data Complementary Enhancement Generation Method Based on Diffusion Model

Remote Sensing
Multi-source radar data fusion has become increasingly vital for advancing weather monitoring and forecasting. However, effectively integrating Doppler radar with an X-band phased-array radar remains challenging.
Yuan Peng, Xiongbo Zheng, Zhilong Shang, Kaiqi He, Zhiyong Cheng   +4 more
doaj   +1 more source

Analysis of MSFC ground-based Doppler lidar data [PDF]

, 1984
Analysis of data collected during the participation of the MSFC 10.6 micron pulsed Doppler lidar system (DLS) in the Joint Airport Weather Studies (JAWS) experiment is concluded.
Rothermel, J.
core   +1 more source

Drivers of Mid‐Latitude Quiet‐Time Longitude Variations in Ionospheric Density

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract The aim of this study is to provide an observational benchmark of mid‐latitude quiet‐time variability in winds, O/N2, and TEC across longitude and local time to provide a foundation for future model–data comparison studies. The quiet‐time ionospheric structure is not uniform but rather exhibits pronounced longitudinal and local‐time ...
K. R. Greer, L. P. Goncharenko, V. L. Harvey, C. Cullens   +3 more
wiley   +1 more source

Remote versus in situ turbulence measurements [PDF]

Comparisons of in situ wind and turbulence measurements made with the NASA B-57 instrumented aircraft and those remotely made with both radar and lidar systems are presented.
Frost, Walter
core   +1 more source