N: 89.75 S: -89.75 E: 180 W: -180
Description
Ocean Surface Current Analyses Real-time (OSCAR) is a global surface current database and NASA funded research project. OSCAR ocean mixed layer velocities are calculated from satellite-sensed sea surface height gradients, ocean vector winds, and sea surface temperature gradients using a simplified physical model for geostrophy, Ekman, and thermal wind dynamics. Daily averaged surface currents are provided on a global 0.25 x 0.25 degree grid as an average over an assumed well-mixed top 30 m of the ocean from 1993 to present day. OSCAR currents are provided at three quality levels: final, interim and nrt with a respective latency of each of approximately 1 year, 1 month, and 2 days. OSCAR is generated by Earth & Space Research (ESR) https://www.esr.org/research/oscar/. More details on the source datasets, file structure, and methodology can be found in oscarv2guide.pdf.
Product Summary
Citation
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
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Documents
USER'S GUIDE
DATA CITATION GUIDELINES
Publications Citing This Dataset
| Title | Year Sort ascending | Author | Topic |
|---|---|---|---|
| Characterizing Spatial and Temporal Variability of California's Coastal Upwelling Using a Satellite-Derived CUTI Index | Egerer, Ulrike, Ghate, Virendra P., Miller, Lee, Mitra, Arka, Xia, Geng, Krishnamurthy, Raghavendra | Ocean Currents, Sea Ice Concentration, Sea Surface Temperature | |
| Comparing the upper-ocean response associated with two pre-monsoon tropical cyclones over the Arabian Sea | Athuldev, A, Ruma, S., Varghese, Akhil | Ocean Currents | |
| A Comparative Study of Velocity and Transport Estimates Along the | Rossby, T., Andres, Magdalena, Chafik, L., Donohue, K. | Ocean Currents | |
| Improving Indian Ocean analysis using ROMS with sea level anomaly | Baduru, Balaji, Paul, Biswamoy, Athul, C R, Paul, Arya, Francis, P A | Ocean Currents, Sea Surface Temperature | |
| An Asymmetric Change in Circulation and Nitrate Transports in the Bay of | Jardine, J. E., Holt, J., Wakelin, S. L., Katavouta, A., Partridge, D. | Ocean Currents | |
| A strong influence of the precession and northern high latitudinal climate on the monsoon seasonality and productivity in the Andaman Sea | Fathima, Rinu, Saraswat, Rajeev, Bhadra, Sudhira R., Naik, Dinesh Kumar, Suokhrie, Thejasino | Ocean Currents | |
| The role of oceanographic scales in shaping highly mobile marine predator distributions | Pinti, Jerome, Carlisle, Aaron B., Huntley, Helga S., Shatley, Matthew, Block, Barbara A., Oliver, Matthew J. | Ocean Currents | |
| Temporal and Spatial Variations in the Thermal Front in the Beibu Gulf | Sun, Ruili, Song, Xindi, He, Shuangyan, Li, Peiliang, Gu, Yanzhen, Zhou, Chaojie | Ocean Currents | |
| Subseasonal variability of ocean currents in the Bay of Bengal | Barrett, Bradford S., Davies, Alexander R., Spedero, Cody P., Mahmud, Nadim, Smith, Joseph P., Masud-Ul-Alam, Md, Biswas, Md. Hanif, Ahmed, Md. Kawser | Ocean Currents | |
| Using long short term memory networks to predict daily-averaged sea level anomaly and surface currents | Athul, C R, Balaji, B, Daiya, Vinod, Paul, Arya | Ocean Currents | |
| Intercomparison of tropical Indian Ocean circulation in ocean reanalysis and evaluation in CMIP6 climate models | Bhanu Deepika, P., Mohan, Soumya, Srinivas, G. | Ocean Currents | |
| Intensification of Pacific tropical instability waves over the recent three decades | Wang, Minyang, Xie, Shang-Ping, Sasaki, Hideharu, Nonaka, Masami, Du, Yan | Ocean Currents | |
| Impact of Horizontal Resolution on Simulating Eddy-Induced Meridional | Qian, Xingshang, Zhou, Lei, Qin, Jianhuang | Ocean Currents | |
| Dynamics of Carbon Export and Lower Trophic Ecosystems: A Comparative Model Study in the Yellow Sea and Dokdo Waters | Kwon, Young Shin, Kang, Hyoun-Woo, Choi, Dong Han, Seo, Ok Hee | Ocean Currents | |
| An Optimization Method Based on Decorrelation Scales Analysis for Improving Surface Currents Retrieval From Sea Surface Temperature | Ye, Feng, Hao, Zengzhou, Pan, Delu | Ocean Currents | |
| Contrasted Trends in Chlorophyll-<i>a</i> Satellite Products | Pauthenet, Etienne, Martinez, Elodie, Gorgues, Thomas, Roussillon, Joana, Drumetz, Lucas, Fablet, Ronan, Roux, Mailys | Ocean Currents | |
| Deep residual fully connected network for GNSS-R wind speed retrieval and its interpretation | Du, Hao, Li, Weiqiang, Cardellach, Estel, Ribo, Serni, Rius, Antonio, Nan, Yang | Ocean Currents, Radar Cross-Section, Surface Winds, Surface Winds | |
| Submesoscale Dynamics in the Bay of Bengal: Inversions and Instabilities | McKie, Taylor, Lucas, Andrew J., MacKinnon, Jennifer | Ocean Currents, Sea Surface Temperature | |
| Improved global sea surface height and current maps from remote sensing and in situ observations | Ballarotta, Maxime, Ubelmann, Clement, Veillard, Pierre, Prandi, Pierre, Etienne, Helene, Mulet, Sandrine, Faugere, Yannice, Dibarboure, Gerald, Morrow, Rosemary, Picot, Nicolas | Ocean Currents | |
| Assessment of thermocline depth bias in the Seychelles-Chagos Thermocline Ridge of the Southwestern Indian Ocean simulated by the CMIP6 models | Mubarrok, Saat, Azminuddin, Fuad, Jang, Chan Joo | Ocean Currents | |
| Analysis of marine heatwaves and biogeochemistry in the Northern Arabian Sea | Chakraborty, Arun, Chandrakar, Raghvendra, Kumar, Sudhanshu, Sadhukhan, Biplab, Kumar, Abhishek | Ocean Currents | |
| Retrieval of 2-D Ocean Total Surface Current From Sentinel-1 Doppler | Li, Yuhang, Liu, Mei | Ocean Currents | |
| Satellite-Derived Lagrangian Transport Pathways in the Labrador Sea | Castelao, Renato M., Oliver, Hilde, Medeiros, Patricia M. | Ocean Currents | |
| Validation of OSCAR surface currents in the western Arctic marginal seas against saildrone observations | Chi, NanHsun, Zhang, Dongxiao, Zhang, Chidong | Ocean Currents, Salinity, TEMPERATURE PROFILES, Conductivity, Sea Surface Temperature, Oxygen, Chlorophyll, Fluorescence, Photosynthetically Active Radiation, Surface Winds, Wave Height, Wave Period, Sea Level Pressure, Water Vapor Indicators, Air Temperature, Surface Winds, Salinity | |
| Seasonal cycle of Sea Surface Salinity in the Angola upwelling system | Awo, F. M., Rouault, M., Ostrowski, M., Tomety, F. S., DaAllada, C. Y., Jouanno, J. | Ocean Currents |
Variables
The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
| Name Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor | Offset |
|---|---|---|---|---|---|---|---|
| u | Velocities are an average over the top 30m of the mixed layer | m s-1 | double | -999 | -3 to 3 | 1 | N/A |
| ug | Geostrophic velocities calculated from absolute dynamic topography | m s-1 | double | -999 | -3 to 3 | 1 | N/A |
| v | Velocities are an average over the top 30m of the mixed layer | m s-1 | double | -999 | -3 to 3 | 1 | N/A |
| vg | Geostrophic velocities calculated from absolute dynamic topography | m s-1 | double | -999 | -3 to 3 | 1 | N/A |