Results 81 to 90 of about 483 (190)

Analysis and Simulations for the Severe Turbulence Event Aloft Myanmar on 21 May 2024

Meteorological Applications, Volume 32, Issue 3, May/June 2025.
This paper performed an analysis of a severe turbulence event encountered by Singapore airlines SQ321 on 21 May 2024 over Myanmar, which led to one fatality and multiple injuries. Model simulation with convective permitting resolution indicated the development of convective cells, but precise Eddy Dissipation Rate (EDR) values are difficult to obtain ...
Christy Yan Yu Leung, Haoming Chen, Xiaoming Shi, Ping Cheung, Pak Wai Chan   +4 more
wiley   +1 more source

Analysis of Damage Probability for Collision Between Space Debris and a Satellite in Low-Earth Orbit [PDF]

Journal of Astronomy and Space Sciences, 2007
Space environment becomes more hazardous for satellite because of increasing number of space debris. This research is to analyze collision hazards between KOMPSAT 3 in low-earth orbit and space debris generated by the explosion of FengYun satellite on ...
Jae-Eun Lee, Sang-Young Park, Young-Rok Kim, Kyu-Hong Choi, Eunghyun Kim, Gyu-Sun Kim   +5 more
doaj   +1 more source

Electron Phase Space Densities in Geostationary Orbits as Measured With GK2A, GOES‐16, and GOES‐17 Satellites

Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract This study investigated electron phase space densities (PSDs) in geostationary orbits using data from Korea's geostationary satellite, GK2A, as well as GOES‐16 and GOES‐17 satellites. The PSDs were computed from electron fluxes measured by each satellite during a geomagnetically quiet period as defined by stringent conditions on geomagnetic ...
C. H. Lee, J. Seon, W. H. Seol, K. H. Kim, D. E. Larson, G. K. Parks, H. U. Auster, W. Magnes, S. Kraft, D. Y. Lee, A. Boudouridis, P. T. M. Loto'aniu, J. V. Rodriguez   +12 more
wiley   +1 more source

Cloud and Cloud Shadow Detection for Multi-Modal Imagery With Gap-Filling Applications

IEEE Access
Cloud and cloud shadow (CCS) detection algorithms play a crucial role in the preprocessing of remote sensing data and directly affect the accuracy of subsequent analyses, making them an essential step in most analytical processes.
Keunhoo Cho, Seongwook Park, Boram Seong, Seongwhan Lee, Jae-Pil Park   +4 more
doaj   +1 more source

MTF DETERMINATION OF SENTINEL-4 DETECTOR ARRAYS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
The Institute for Optical Sensor Systems was involved in many international space projects in recent years. These include, for example, the fokal plane array (FPA) of the hyperspectral sensors ENMAP or Sentinel-4, but also the FPA for the high ...
R. Reulke, I. Sebastian, C. Williges, R. Hohn   +3 more
doaj   +1 more source

Quantitative Assessment of GOES 8–15 > ${ >} $0.6 and > ${ >} $4 MeV Radiation Belt Electron Fluxes

Space Weather, Volume 23, Issue 3, March 2025.
Abstract On Geostationary Operational Environmental Satellites (GOES) 8–15 (1996–2020), the Energetic Particle Sensor (EPS) included three integral electron channels, with nominal lower energies of 0.6 MeV (E1), 2 MeV (E2) and 4 MeV (E3). The > ${ >} $2 MeV channel has received more attention than the other two channels, because it is used by the NOAA ...
J. V. Rodriguez, M. H. Denton, A. Boudouridis   +2 more
wiley   +1 more source

Historical rainstorm in Hong Kong on 7–8 September 2023: Diagnosis, forecasting and nowcasting

Atmospheric Science Letters, Volume 26, Issue 1, January 2025.
Past 24‐h rainfall analysis over Hong Kong ending at 1600 Hong Kong Time (HKT) on 8 September 2023, the historical rainstorm. Abstract On 7–8 September 2023, Hong Kong was hit by a historical and record‐breaking rainstorm associated with the remnant of Tropical Cyclone Haikui (2311).
Hiu Ching Tam, Yu‐Heng He, Pak Wai Chan, Shiwei Yu, Huisi Mo, Hui Su, Ling‐Feng Hsiao, Yangzhao Gong   +7 more
wiley   +1 more source

Cascading consequences of structural interventions in a tropical wandering gravel‐bed river

River Research and Applications, Volume 41, Issue 1, Page 120-137, January 2025.
Abstract Riverscapes are often modified and managed through ‘command and control’ structural engineering approaches. These structures not only alter flow and sediment transport patterns but also negatively affect riverscape biodiversity. These impacts are particularly acute for rivers that are characterised by high mobility and wide flow distribution ...
Pamela Louise M. Tolentino, Richard D. Williams, Martin D. Hurst   +2 more
wiley   +1 more source

Impacts of Updated Physics Parameterizations on the Short‐Range Weather Forecast System of the Korea Air Force

Advances in Meteorology, Volume 2025, Issue 1, 2025.
The weather prediction model system of Korea Air Force (KAF), based on the Weather Research and Forecasting (WRF) model, has been operated since 2007. This study incorporates recent physics parameterizations into the KAF‐WRF system and evaluates their impacts on the performance of the system in simulating winter precipitation, fog, and low‐level cloud ...
Jae-Ik Song, Kyo-Sun Sunny Lim, Ui-Yong Byun, Juhee Kwon, Junhong Lee, Sang-Hun Park, Hyeyum Hailey Shin, Sun-Young Park, Jeong-Su Ko, Hong-Je Yu, Eun-Chul Chang, Pramita Mishra   +11 more
wiley   +1 more source

Assessment of Commercial GNSS Radio Occultation Performance from PlanetiQ Mission

Remote Sensing
Global Navigation Satellite System (GNSS) radio occultation (RO) provides valuable 3-D atmospheric profiles with all-weather, all the time and high accuracy. However, GNSS RO mission data are still limited for global coverage.
Mohamed Zhran, Ashraf Mousa, Yu Wang, Fahdah Falah Ben Hasher, Shuanggen Jin   +4 more
doaj   +1 more source