The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Shengqi Zhou - One of the best experts on this subject based on the ideXlab platform.
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the anticyclonic circulation in the southern south china sea observed structure Seasonal Development and interannual variability
Journal of Marine Systems, 2016Co-Authors: Rong Xiang, Wendong Fang, Shengqi ZhouAbstract:Abstract In situ hydrographic and current observations from cruises in 1998 and 1999, together with 20-year (1993–2012) sea level anomaly (SLA) data from satellite altermeter, have been used to study the vertical structure, Seasonal Development, and interannual variability of the anticyclonic circulation in the southern South China Sea (SCS). The relationship between the anticyclonic circulation and its northern flanking cyclonic eddy are described. Three associated circulation patterns are identified. The anticyclonic circulation is present for an average of 108 ± 30 days per year, while its northern flanking cyclonic eddy is present for an average of 54 ± 25 days per year. The intraSeasonal variability of the anticyclonic circulation is intense as a result of advection with the flanking northern cyclone, which accompanies the gyre on average about 60% of the time. The vertical structure of the anticyclonic circulation in 1998 (1999) penetrated much deeper, and its horizontal scope became wider in June (July) than in April. The anticyclonic circulation shows some difference between 1998 and 1999, displaying earlier appearance, more northward position, and non-dipole pattern in 1998, suggesting that the interannual variability of the anticyclonic circulation is related to El Nino Southern Oscillation (ENSO) events. The effect of Sverdrup balance via westward propagating Rossby wave on the Seasonal Development of the anticyclonic circulation has been discussed.
Rong Xiang - One of the best experts on this subject based on the ideXlab platform.
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the anticyclonic circulation in the southern south china sea observed structure Seasonal Development and interannual variability
Journal of Marine Systems, 2016Co-Authors: Rong Xiang, Wendong Fang, Shengqi ZhouAbstract:Abstract In situ hydrographic and current observations from cruises in 1998 and 1999, together with 20-year (1993–2012) sea level anomaly (SLA) data from satellite altermeter, have been used to study the vertical structure, Seasonal Development, and interannual variability of the anticyclonic circulation in the southern South China Sea (SCS). The relationship between the anticyclonic circulation and its northern flanking cyclonic eddy are described. Three associated circulation patterns are identified. The anticyclonic circulation is present for an average of 108 ± 30 days per year, while its northern flanking cyclonic eddy is present for an average of 54 ± 25 days per year. The intraSeasonal variability of the anticyclonic circulation is intense as a result of advection with the flanking northern cyclone, which accompanies the gyre on average about 60% of the time. The vertical structure of the anticyclonic circulation in 1998 (1999) penetrated much deeper, and its horizontal scope became wider in June (July) than in April. The anticyclonic circulation shows some difference between 1998 and 1999, displaying earlier appearance, more northward position, and non-dipole pattern in 1998, suggesting that the interannual variability of the anticyclonic circulation is related to El Nino Southern Oscillation (ENSO) events. The effect of Sverdrup balance via westward propagating Rossby wave on the Seasonal Development of the anticyclonic circulation has been discussed.
A L New - One of the best experts on this subject based on the ideXlab platform.
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structure Seasonal Development and sunglint spatial coherence of the internal tide on the celtic and armorican shelves and in the bay of biscay
Deep Sea Research Part I: Oceanographic Research Papers, 1995Co-Authors: R D Pingree, A L NewAbstract:Abstract The generation and propagation of internal tides from the shelf break in the Bay of Biscay is now a well-documented process, but a description of the spatial coherence of the internal tides has so far been impossible with conventional in situ observations. This paper first analyses the shelf measurements of internal tides and shows that by studying available remotely sensed images over a number of years, particularly in the visible band (which we term “sunglint” images), it is possible to gain significant insight into the spatial coverage, long-crestedness, and Seasonal Development of these features. The sunglint images provide a synoptic description of the internal tides, and show that they may occur up to 250 km onshelf from the shelf break with coherent crests extending over 400 km in the along shelf direction. The oceanic signal was observed to extend from the shelf break right across the Bay of Biscay (∼300 km). The images allow the tidal wavelengths to be reliably estimated both onshelf and offshelf from the shelf break, without complications arising from advection by the barotropic tide which occur when in situ measurements are made. A strong Seasonal signal was found which results from the Development of the stratification in the upper water column. By approximating observed temperature profiles, a simple two-layer model is developed for the onshelf waves which provides a relationship between the tidal wavelengths, and the thickness of and the temperature difference across, the upper layer. It is possible to use this relationship in combination with remote sensed images, providing sea-surface temperature and tidal wavelength, to infer the depth of the upper layer, which generally increases as the stratification develops, so allowing a simple method for estimating the stratification in the upper water column. The effect of nonlinearity is important in determining wave structure but has only a small effect on phase speed or wavelength in the presence of Earth's rotation.
Wendong Fang - One of the best experts on this subject based on the ideXlab platform.
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the anticyclonic circulation in the southern south china sea observed structure Seasonal Development and interannual variability
Journal of Marine Systems, 2016Co-Authors: Rong Xiang, Wendong Fang, Shengqi ZhouAbstract:Abstract In situ hydrographic and current observations from cruises in 1998 and 1999, together with 20-year (1993–2012) sea level anomaly (SLA) data from satellite altermeter, have been used to study the vertical structure, Seasonal Development, and interannual variability of the anticyclonic circulation in the southern South China Sea (SCS). The relationship between the anticyclonic circulation and its northern flanking cyclonic eddy are described. Three associated circulation patterns are identified. The anticyclonic circulation is present for an average of 108 ± 30 days per year, while its northern flanking cyclonic eddy is present for an average of 54 ± 25 days per year. The intraSeasonal variability of the anticyclonic circulation is intense as a result of advection with the flanking northern cyclone, which accompanies the gyre on average about 60% of the time. The vertical structure of the anticyclonic circulation in 1998 (1999) penetrated much deeper, and its horizontal scope became wider in June (July) than in April. The anticyclonic circulation shows some difference between 1998 and 1999, displaying earlier appearance, more northward position, and non-dipole pattern in 1998, suggesting that the interannual variability of the anticyclonic circulation is related to El Nino Southern Oscillation (ENSO) events. The effect of Sverdrup balance via westward propagating Rossby wave on the Seasonal Development of the anticyclonic circulation has been discussed.
Timothy W Liu - One of the best experts on this subject based on the ideXlab platform.
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a gap in the indo pacific warm pool over the south china sea in boreal winter Seasonal Development and interannual variability
Journal of Geophysical Research, 2004Co-Authors: Qinyu Liu, Xia Jiang, Shangping Xie, Timothy W LiuAbstract:[1] The Indo-Pacific warm water pool in boreal winter shows a conspicuous gap over the South China Sea (SCS) where sea surface temperature (SST) is considerably lower than over the oceans both to the west and east. The formation mechanisms for the climatology and interannual variability of SCS SST in boreal winter are investigated using a suite of new satellite measurements. The winter SCS is divided into two parts by the axis of the maximum northeasterly monsoonal winds. The positive wind curl in the southeastern half of the ocean drives a cyclonic gyre circulation in the deep basin. As its western boundary current, an intense southward flow is found south of Vietnam on the continental slope separating the Sunda Shelf to the west and the deep SCS basin to the east. This slope current exceeds 0.5 m s(-1) in speed and advects cold water from the north. This cold advection results in a distinct cold tongue in the winter SST climatology. Both the slope current and the cold tongue are strongest in November to February. This winter cold tongue displays considerable interannual variability that is highly correlated with eastern equatorial Pacific SST. In an El Nino the winter monsoon weakens, causing the SCS ocean circulation to spin down. The reduced western boundary current and its thermal advection result in a warming in the SCS winter cold tongue. Both SST variance and its correlation with the El Nino-Southern Oscillation peak along the climatological cold tongue indicate that ocean dynamics are an important player in SCS climate variability.
