ESA 4DMED-Sea - Finite-Time Lagrangian Vorticity in the Mediterranean Sea derived from 4DVARNET8 geostrophic velocities (1/24°)
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This product provides the Finite-Time Lagrangian Vorticity derived from surface geostrophic velocities result from the application of the 4DVARNET algorithm (Fablet et al., 2021; resolution of the dynamical model used for the learning/training (eNATL60-BLB02) downgraded to 1/8°) to altimetry L3-data (https://doi.org/10.5281/zenodo.10908416) at a resolution of 1/24° over the Mediterranean Sea and for the period from April 2016 to July 2022. Algorithm used to compute Finite-Time Lagrangian Vorticity was developed by I. Hernandez-Carrasco (Hernandez-Carrasco et al, 2011, Ocean modelling. https://doi.org/10.1016/j.ocemod.2010.12.006). ---------------------------------------------------------------------------------------- Geographical coverage: Mediterranean Sea Grid and horizontal spatial resolution: Evenly spaced 1/24º grid Vertical levels: Only surface level Temporal resolution: Daily (April 2016 - July 2022) ----------------------------------------------------------------------------------------- Variables: lon (1D) lat (1D) time (1D) ftlv (2D)
本数据集提供有限时间拉格朗日涡度(Finite-Time Lagrangian Vorticity)产品,该涡度由表层地转流速推导而来;而该表层地转流速系通过对测高计L3级数据(altimetry L3-data,https://doi.org/10.5281/zenodo.10908416)应用4DVARNET算法生成,相关研究参见Fablet等(2021);用于模型训练的动力学模型eNATL60-BLB02的原始分辨率被降尺度至1/8°。本数据集覆盖地中海海域,空间分辨率为1/24°,时间跨度为2016年4月至2022年7月。 用于计算有限时间拉格朗日涡度的算法由I. Hernandez-Carrasco等人开发(Hernandez-Carrasco等,2011,《海洋建模》;https://doi.org/10.1016/j.ocemod.2010.12.006)。 ---------------------------------------------------------------------------------------- 地理覆盖范围:地中海海域 网格与水平空间分辨率:均匀分布的1/24°网格 垂直层级:仅表层 时间分辨率:逐日(2016年4月—2022年7月) ----------------------------------------------------------------------------------------- 变量: lon(1D,经度) lat(1D,纬度) time(1D,时间) ftlv(2D,有限时间拉格朗日涡度)



