Satellite observation of internal wave refraction in the South China Sea

Fett, Robert W.; Rabe, K.

doi:10.1029/gl004i005p00189

Cited by 50 publications

(22 citation statements)

References 3 publications

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“…The waves increase the surface roughness in areas where the horizontal flow converges, allowing for their view in the glint zone. Solitons have been observed via satellite imagery in the sun glint zone [34,35]-the DNB can now provide similar high spatial resolution views of solitons during the nighttime hours via moon glint in a way entirely analogous to daytime sun glint. Figure 6 compares thermal infrared VIIRS imagery (M15) to DNB imagery for a southern portion of the Celebes Sea, located in the Indonesian archipelago.…”

Section: Sea Surface Roughness Properties Via Moon Glintmentioning

confidence: 99%

Illuminating the Capabilities of the Suomi National Polar-Orbiting Partnership (NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band

Miller

Straka

Mills³

et al. 2013

Remote Sensing

296

207

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Daytime measurements of reflected sunlight in the visible spectrum have been a staple of Earth-viewing radiometers since the advent of the environmental satellite platform. At night, these same optical-spectrum sensors have traditionally been limited to thermal infrared emission, which contains relatively poor information content for many OPEN ACCESSRemote Sens. 2013, 5 6718 important weather and climate parameters. These deficiencies have limited our ability to characterize the full diurnal behavior and processes of parameters relevant to improved monitoring, understanding and modeling of weather and climate processes. Visible-spectrum light information does exist during the nighttime hours, originating from a wide variety of sources, but its detection requires specialized technology. Such measurements have existed, in a limited way, on USA Department of Defense satellites, but the Suomi National Polar-orbiting Partnership (NPP) satellite, which carries a new Day/Night Band (DNB) radiometer, offers the first quantitative measurements of nocturnal visible and near-infrared light. Here, we demonstrate the expanded potential for nocturnal low-light visible applications enabled by the DNB. Via a combination of terrestrial and extraterrestrial light sources, such observations are always available-expanding many current existing applications while enabling entirely new capabilities. These novel low-light measurements open doors to a wealth of new interdisciplinary research topics while lighting a pathway toward the optimized design of follow-on satellite based low light visible sensors.

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Section: Sea Surface Roughness Properties Via Moon Glintmentioning

confidence: 99%

Illuminating the Capabilities of the Suomi National Polar-Orbiting Partnership (NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band

Miller

Straka

Mills³

et al. 2013

Remote Sensing

296

207

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“…Since Fett and Rabe (1977) showed that there existed internal waves in the vicinity of Dongsha Islands in the SCS by a satellite photograph in May 1973, some progress has been made on the studies of the internal solitons here. The wave-induced current reported here may exceed 200 cm s -1 (Cai et al, 2002).…”

Section: Summary Of the Recent Observations Of Internal Solitons Nearmentioning

confidence: 99%

“…In the last two decades, it is reported that the internal solitons near Dongsha Islands in the northern South China Sea (SCS) were very active (Fett and Rabe, 1977;Fang et al, 2000) . It is pointed out that the solitons north of Dongsha Islands were generated in a strait between Batan and Sabtang islands in the Luzon Strait (Fig.…”

Section: Introductionmentioning

confidence: 99%

A numerical study of the generation and propagation of internal solitary waves in the Luzon Strait

2002

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A new composite model, which consists of a generation model of the internal tides and a regularized long wave propagation model, is presented to study the generation and evolution of internal solitary waves in the sill strait. Internal bores in the sill strait are first simulated by the generation model, and then the internal tidal field outside of the sill region is given as input for the propagation model. Numerical experiments are carried out to study the imposing tide, depth profile, channel width and shoaling effect, etc., on the generation and evolution of internal solitary waves. It is shown that only when the amplitude of internal tide at the forcing boundary of the propagation model is large enough that a train of internal solitary waves would be induced. The amplitude of the imposing tide in the generation model, shoaling effect, asymmetry of the depth profile and channel width have some effects on the amplitude of the induced internal solitary wave. The imposing tidal flow superimposed on a constant mean background flow has a great damping effect on the induced internal waves, especially on those propagate against the background flow direction. The generation and propagation of internal solitary waves in three possible straits among the Luzon Strait are simulated, and the reasons for the asymmetry of their propagation are also explained. © 2002 Ifremer/CNRS/IRD/Éditions scientifiques et médicales Elsevier SAS. All rights reserved. RésuméUn nouveau modèle composite, associant un modèle de génération de marées internes et un modèle de propagation d'ondes longues régularisée est proposé pour l'étude de la génération et de l'évolution d'ondes solitaires internes dans un détroit à seuil. Les ondes de marée internes dans le détroit à seuil sont d'abord simulées par le modèle de génération ; le champ de marée interne à l'extérieur du seuil sert à initialiser le modèle de propagation. Des expériences numériques sont conduites pour étudier les effets de la marée imposée, du profil de profondeur, de la largeur du canal et des haut-fonds, etc. sur la génération et l'évolution des ondes solitaires internes. C'est seulement quand l'amplitude de la marée interne à la limite de forçage du modèle de propagation atteint une certaine valeur qu'un train d'ondes solitaires internes est induit. L'amplitude de la marée initiale dans le modèle de génération, l'effet de haut-fond, l'asymétrie du profil de profondeur et la largeur du canal agissent quelque peu sur l'amplitude de l'onde solitaire interne induite. Le flux de marée surimposé à un courant moyen constant a un effet majeur d'amortissement sur les ondes internes induites, spécialement sur celles qui se propagent contre la direction du courant moyen. La génération et la propagation d'ondes solitaires internes dans trois des seuils du détroit de Luzon sont simulées et les raisons de leur asymétrie de propagation sont également expliquées. © 2002 Ifremer/CNRS/IRD/Éditions scientifiques et médicales Elsevier SAS. Tous droits réservés.

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“…Unfortunately these satellites view the same areas only once every 18 days. Some work has been done by Fett and Rabe (1977) and Fett etal. (1978) using visible data from satellites of the Defense Meteorological Satellite Program (DMSP).…”

Section: Introductionmentioning

confidence: 99%

Oceanographic implications of features in NOAA satellite visible imagery

Violette¹,

Peteherych

Gower³

1980

Boundary-Layer Meteorol

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The sunglint areas of the ocean in NOAA satellite visible imagery appear as long swaths that extend from the northern extremes of the North Temperate Zone to the southern extreme of the South Temperate Zone. Examples are shown of complex features apparent in the sunglint area of visible imagery that closely match ocean-related thermal features in the companion infrared imagery. Various interpretationsof these features are discussed. Data from the first phase of the Grand Banks Experiment (June 1978) are presented which demonstrate that such sunglint features are related to the strong ocean frontal processes present in this area. Although some of the features may be associated with fog or mist, side-looking airborne radar imagery collected during the experiment confirms the presence of surface roughness variations. The observations strongly suggest that these roughness variations are due to changes in the stability of the atmospheric boundary layer caused by the different surface water temperatures present in the area. The results demonstrate the usefulness of NOAA visible imagery as a tool to aid in the understanding of synoptic ocean processes, and suggest an important application for satellite and airborne synthetic aperture radars in mapping the roughness changes associated with ocean current systems.

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Satellite observation of internal wave refraction in the South China Sea

Cited by 50 publications

References 3 publications

Illuminating the Capabilities of the Suomi National Polar-Orbiting Partnership (NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band

Illuminating the Capabilities of the Suomi National Polar-Orbiting Partnership (NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band

A numerical study of the generation and propagation of internal solitary waves in the Luzon Strait

Oceanographic implications of features in NOAA satellite visible imagery

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