Results 71 to 80 of about 2,001 (206)

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

Robustness and Actuator Bandwidth of MRP-Based Sliding Mode Control for Spacecraft Attitude Control Problems [PDF]

Journal of Astronomy and Space Sciences, 2009
Nonlinear sliding surface design in variable structure systems for spacecraft attitude control problems is studied. A robustness analysis is performed for regular form of system, and calculation of actuator bandwidth is presented by reviewing sliding ...
Jung-Hoon Keum, Sung-Woong Ra
doaj   +1 more source

Banda Aceh-The Value of Earth Observation Data in Disaster Recovery and Reconstruction: A Case Study [PDF]

, 2008
On 26 December 2004, Banda Aceh in Indonesia was at the center of one of the worst natural disasters to affect mankind. Large amounts of international aid poured in to assist in the relief and reconstruction efforts. Amongst this effort, were investments
Fritz, S., Kidd, R., Kraxner, F., McCallum, I., Obersteiner, M.   +4 more
core  

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

Assessment of Accuracy of COSMIC and KOMPSAT GNSS Radio Occultation Temperature and Pressure Measurements over the Philippines

Atmosphere
Radio occultation (RO) is a technique used for measuring planetary atmosphere properties by orbiting satellites, like temperature, pressure, and water vapor.
Karl Philippe A. Descalzo, Ernest P. Macalalad   +1 more
doaj   +1 more source

3D Geopositioning Accuracy Assessment Using KOMPSAT-2 RPC

Korean Journal of Geomatics, 2011
The objective of this paper is to improve the accuracy of the 3D geopositioning extracted from Rational Polynomial Coefficient(RPC) provide in the KOMPSAT-2 metadata files. In this paper, we developed the algorithm to adjust a RFM(Rational Functional Model), and could improve the accuracy of a RFM with this algorithm.
Kwan-Young Oh, Hyung-Sup Jung, Won-Jin Lee, Dong-Taek Lee   +3 more
openaire   +2 more sources

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

Study on Equatorial Bubbles Detected by SPS IMS Onboard the Kompsat-I [PDF]

Journal of Astronomy and Space Sciences, 2002
Space Physics Sensor onboard the KOMPSAT-1, which was launched at 1999, had transmitted ionospheric data during the solar maximum from June 2000 to August 2001.
Jaejeung Park, Jaejin Lee, Ensang Lee, Kyoung-Wook Min   +3 more
doaj   +1 more source

Near‐Earth Reconnection Contributing to Recovery Phase of Geomagnetic Storm

Geophysical Research Letters, Volume 51, Issue 24, 28 December 2024.
Abstract Recent observations show very near‐Earth reconnection (∼8–13RE) could efficiently power the ring current during the main phase of geomagnetic storms, but whether the recovery phase might be contributed remains unclear. During the recovery phase of the May 2024 major geomagnetic storm, intense auroral brightening and geomagnetic disturbances ...
Terry Z. Liu, Vassilis Angelopoulos, Yukitoshi Nishimura, Yangyang Shen, Xueling Shi, Michael D. Hartinger   +5 more
wiley   +1 more source

Uso de Redes Neuronales Autoorganizativas Dinámicas no Supervisadas para la Discriminación de tipos de aguas en Lagos. [PDF]

, 2008
Las técnicas de clasificación supervisadas aplicadas a imágenes de satélite requieren la selección de muestras representativas de los distintos tipos de clases de cubiertas presentes en la imagen a analizar.
Arquero Hidalgo, Águeda, Delgado Sanz, Maria Soledad, Gonzalo Martín, Consuelo, Lillo Saavedra, Mario Fernando, Martínez Izquierdo, María Estíbaliz   +4 more
core   +1 more source