Eddies in the ocean and atmosphere: Identification by satellite imagery

Aleksanina, M.G.; Eremenko, Alexander; Zagumennov, A. A.; Kachur, V. A.

doi:10.3103/s1068373916090041

Cited by 3 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is necessary to ensure sufficient spatio-temporal coverage of the phenomenon under study. Traditionally, data obtained from IR images are used, where eddies manifested due to contrasts of sea surface temperature (sst) 4 . However, in some areas, eddies in IR images cannot be identified due to small contrasts in the surface temperature fields 5 .…”

Section: Introductionmentioning

confidence: 99%

Contrast characteristics of sub-mesoscale eddies in satellite ocean color data in the region of Tumen River inflow into Peter the Great Bay

Lipinskaya,

Salyuk

2023

29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

View full text Add to dashboard Cite

The contrast characteristics of sub-mesoscale eddies in the area of the Tumen River outflow into the Peter the Great Bay (Sea of Japan / East Sea) are analyzed from satellite ocean color data (remote sensing reflectance spectra and estimates of the concentration of chlorophyll-a). It was shown that during the study period, the contrast-to-noise ratio based on the calculation of the concentration of chlorophyll-a using bio-optical algorithms have greater values compared to the contrasts calculated from sea surface temperature data. The spectral ranges of the best contrast-to-noise ratio and the depth of formation of the satellite image of eddies are also determined.

show abstract

Section: Introductionmentioning

confidence: 99%

Contrast characteristics of sub-mesoscale eddies in satellite ocean color data in the region of Tumen River inflow into Peter the Great Bay

Lipinskaya,

Salyuk

2023

29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

View full text Add to dashboard Cite

show abstract

“…In the satellite IR images, eddies are distinguished due to sea surface temperature contrasts, which is a basic oceanographic parameter [21,22]. However, for some areas, in a certain season, the manifestations of eddies in thermal contrasts may be weak or entirely absent [23].…”

Section: Introductionmentioning

confidence: 99%

Variations and Depth of Formation of Submesoscale Eddy Structures in Satellite Ocean Color Data in the Southwestern Region of the Peter the Great Bay

Lipinskaya,

Salyuk,

Golik

2023

Remote Sensing

View full text Add to dashboard Cite

The aim of this study was to develop methods for determining the most significant contrasts in satellite ocean color data arising in the presence of a submesoscale eddy structure, as well as to determine the corresponding depths of the upper layer of the sea where these contrasts are formed. The research was carried out on the example of the chain of submesoscale eddies identified in the Tumen River water transport area in the Japan/East Sea. MODIS Aqua/Terra satellite data of the remotely sensed reflectance (Rrs) and Rrs band ratio at various wavelengths, chlorophyll-a concentration, and, for comparison, sea surface temperature (sst) were analyzed. Additionally, the results of ship surveys in September 2009 were used to study the influence of eddy vertical structure on the obtained remote characteristics. The best characteristic for detecting the studied eddies in satellite ocean color data was the MODIS chlor_a standard product, which is an estimate of chlorophyll-a concentration obtained by a combination of the three-band reflectance difference algorithm (CI) for low concentrations and the band-ratio algorithm (OCx) for high concentrations. At the same time, the weakest contrasts were in sst data due to similar water heating inside and outside the eddies. The best eddy contrast-to-noise ratio according to Rrs spectra is achieved at 547 nm in the spectral region of seawater with maximum transparency and low relative errors of measurements. The Rrs at 678 nm and associated products may be a significant characteristic for eddy detection if there are many phytoplankton in the eddy waters. The maximum depth of the remotely sensed contrast formation of the considered eddy vertical structure was ~6 m, which was significantly less than the maximum spectral penetration depth of solar radiation for remote sensing, which was in the 14–17 m range. The results obtained can be used to determine the characteristics that provide the best contrast for detecting eddy structures in remotely sensed reflectance data and to improve the interpretation of remote spectral ocean color data in the areas of eddies activity.

show abstract

Calculation of Pressure in Tropical Cyclones Using Satellite Data

Eremenko

Kachur

2019

Russ. Meteorol. Hydrol.

View full text Add to dashboard Cite

Eddies in the ocean and atmosphere: Identification by satellite imagery

Cited by 3 publications

References 4 publications

Contrast characteristics of sub-mesoscale eddies in satellite ocean color data in the region of Tumen River inflow into Peter the Great Bay

Contrast characteristics of sub-mesoscale eddies in satellite ocean color data in the region of Tumen River inflow into Peter the Great Bay

Variations and Depth of Formation of Submesoscale Eddy Structures in Satellite Ocean Color Data in the Southwestern Region of the Peter the Great Bay

Calculation of Pressure in Tropical Cyclones Using Satellite Data

Contact Info

Product

Resources

About