From 1/4° to 1/8°: Influence of Spatial Resolution on Eddy Detection Using Altimeter Data Article Swipe
Yinuo Wang
,
Xiaohong Chen
,
Guiyan Han
,
Pingping Jin
,
Jie Yang
·
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.3390/rs14010149
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.3390/rs14010149
A substantial portion of ocean eddies, especially small ones, may be missed due to insufficient spatial or temporal sampling by satellite altimetry. In order to illustrate the influence of spatial resolution on eddy detection, this study provides a comparison of eddy identification, tracking, and analysis between two sets of merged altimeter data with spatial resolutions of 1/4° and 1/8°. One main study area (the Mediterranean Sea), and three confirmatory areas (the South-China Sea, the North-West Pacific, and the South-East Pacific) are chosen. The results show that the number and density of eddies captured by the 1/8° data are about twice as much as those captured by the 1/4° data, while the ratios of corresponding eddy parameters, i.e., radius, amplitude, (eddy kinetic energy (EKE)) are about 0.6–0.8 (1.3) for the two datasets (1/8° ÷ 1/4°). Long-term eddy tracking (1993–2018) is conducted in the Mediterranean Sea, indicating that the improvement in spatial resolution will increase the observed values of both the lifetime and the propagation distance of robust eddies. The number of eddies identified using the 1/4° data only accounts for ~30% to 60% of those identified using the 1/8° data. However, for eddies that can be detected using the two datasets, ~5% to 10% present errors (i.e., confusion). In comparison between the four regions, we find that for the enclosed seas with complex conditions, the increase in spatial resolution may lead to more significant improvements in the efficiency and accuracy of eddy detection.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/rs14010149
- https://www.mdpi.com/2072-4292/14/1/149/pdf?version=1640855255
- OA Status
- gold
- Cited By
- 2
- References
- 56
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4206063005
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Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4206063005Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/rs14010149Digital Object Identifier
- Title
-
From 1/4° to 1/8°: Influence of Spatial Resolution on Eddy Detection Using Altimeter DataWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
-
2021Year of publication
- Publication date
-
2021-12-30Full publication date if available
- Authors
-
Yinuo Wang, Xiaohong Chen, Guiyan Han, Pingping Jin, Jie YangList of authors in order
- Landing page
-
https://doi.org/10.3390/rs14010149Publisher landing page
- PDF URL
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https://www.mdpi.com/2072-4292/14/1/149/pdf?version=1640855255Direct link to full text PDF
- Open access
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
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https://www.mdpi.com/2072-4292/14/1/149/pdf?version=1640855255Direct OA link when available
- Concepts
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Eddy, Altimeter, Geology, Spatial variability, Environmental science, Climatology, Mediterranean sea, Image resolution, Remote sensing, Geodesy, Mediterranean climate, Meteorology, Geography, Computer science, Statistics, Mathematics, Turbulence, Artificial intelligence, ArchaeologyTop concepts (fields/topics) attached by OpenAlex
- Cited by
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2Total citation count in OpenAlex
- Citations by year (recent)
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2025: 1, 2024: 1Per-year citation counts (last 5 years)
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56Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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