Results 211 to 220 of about 5,181 (243)

Severe visibility marine fog detection using COMS/GOCI VIS bands

Remote Sensing of Clouds and the Atmosphere XXIV, 2019
In this study, we investigated different optical properties between severe versus moderate visibility marine fog using Geostationary Ocean Color Imager (GOCI) visible band measurements. Severe and moderate visibility marine fogs are best distinguishable with the criteria of visibility as 500 m.
Donghee Kim, Myung-Sook Park
openaire   +1 more source

Real-time detection of harmful algal blooms using GOCI II and buoy-based dissolved oxygen variations

Environmental Research Letters
Harmful algal blooms (HABs) threaten aquatic ecosystems and water quality, necessitating timely monitoring. Traditional satellite observations, including high-frequency sensors like Geostationary Ocean Color Imager II (GOCI-II), are often hindered by ...
Jiarui Shi, He Qin, Jinghua Cheng, Jie Xu, Ge Liu, Zuchuan Li, Kaishan Song   +6 more
semanticscholar   +1 more source

GOCI-II atmospheric correction and its system vicarious calibration: current status and future directions

Optical Engineering + Applications
The Geostationary Ocean Color Imager series (i.e., GOCI and GOCI -II) is the first spaceborne ocean color sensor capable of capturing daytime images with unprecedented temporal resolution and has contributed significantly to advancing our understanding ...
Jae-Hyun Ahn, Kyeong-Sang Lee, J. Moon, Tai-hyun Han, Minsang Kim, Myung-Sook Park, S. Bae, Eunkyung Lee, Eunna Jang, Sun-Ju Lee, Jong-Kuk Choi   +10 more
semanticscholar   +1 more source

Assessment of GOCI radiometric products using MERIS, MODIS and field measurements

Ocean Science Journal, 2012
The first Geostationary Ocean Color Imager (GOCI) launched by South Korea in June 2010 constitutes a major breakthrough in marine optics remote-sensing for its capabilities to observe the diurnal cycles of the ocean. The light signal recorded at eight wavelengths by the sensor allows, after correction for Solar illumination and atmospheric effects, the
Lamquin, Nicolas, Mazeran, Constant, Doxaran, David, Ryu, Joo-Hyung, Park, Young-Je   +4 more
openaire   +3 more sources

Estimation and Validation of Photosynthetically Available Radiation at the Sea Surface Using GOCI-II Data

Korean Journal of Remote Sensing
: Photosynthetically available radiation (PAR), used in primary productivity research, is calculated from the amount of solar radiation reaching the sea surface in the 400-700 nm wavelength band.
D. Hwang
semanticscholar   +1 more source

On-orbit ocean color instrument intercomparison of GOCI-II with VIIRS and PACE

Optical Engineering + Applications
The Geostationary Ocean Color Imager (GOCI) series provides unique high-frequency observations—ranging from diurnal to interannual timescales—across both turbid coastal and oligotrophic waters in Northeast Asia.
Myung-Sook Park, Minsang Kim, Jae-Hyun Ahn, Jong-Kuk Choi   +3 more
semanticscholar   +1 more source

Spring-neap variation of total suspended solids over the Changjiang Bank in winter based on GOCI

Frontiers in Marine Science
Total suspended solids concentration (TSS) over the Changjiang Bank exhibits significant spatial heterogeneity and distinct rhythmic variations at spring-neap and quarter-diurnal timescales.
Yu Zhou, J. Xuan, Feng Zhou
semanticscholar   +1 more source

Spatial–Temporal Distribution of Offshore Transport Pathways of Coastal Water Masses in the East China Sea Based on GOCI-TSS

Water
The offshore transport of coastal water masses in the East China Sea is vital for maintaining ecological stability. Understanding its spatial-temporal pathways helps clarify material transport and ecological responses.
Yuanjie Peng, Wenbin Yin
semanticscholar   +1 more source

High-resolution spatio-temporal monitoring of coastal hypoxia using machine learning models and GOCI-MODIS satellite data.

Marine Pollution Bulletin
While hypoxia is conventionally defined as a dissolved oxygen (DO) concentration below 2 mg/L, this study adopts a more conservative 3 mg/L threshold as an early-warning indicator.
Seon-Oh Park, Taeyoon Lee, Kyunghoi Kim
semanticscholar   +1 more source

Estimation of Eulerian Sea Surface Currents and Lagrangian Trajectory Using Ocean Color Elements From GOCI Images in Turbid Coastal Water

Journal of Geophysical Research: Oceans
In turbid coastal waters, sea surface currents often exhibit frequent spatiotemporal variability, retrieving them from optical satellite data remains challenging due to the saturated signal caused by suspended particles. This study uses the maximum cross‐
Xiaoping Xu, Bin Ai, Jun Zhao, Yuxun Liu
semanticscholar   +1 more source