Dataset for: Offshore Spreading of Mississippi Waters: Pathways and Vertical Structure Under Eddy Influence
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This dataset is based on archives from the high resolution (1/50 deg) Gulf of Mexico Hybrid Coordinate Ocean Model (GoM-HYCOM) model, which gives details on the fronts and filaments associated with the Mississippi River plume dynamics, as well as GoM mesoscale processes relevant to this study (in particular the LC frontal dynamics and their influence on plume transport. The fields are (1) Temperature and Salinity down to 1500m with 11 levels at 5, 10, 15, 25, 50, 100, 150, 300, 500, 1000, 1500m for August 2015, (2) transport of waters with salinity less than 35 (Sv) along sections at 25.5N from July 1 to Sep 30 of 2015, and (3) time series of mean Sea Surface Salinity (SSS) in 2015 over the areas of two observed Mississippi branches (Eastern;24.5N-28.5N, 87W-84W and Western;23N-28.5N, 92W-885W) and the Straits of Florida (23.2N-24.7N, 85W-81.25W) from a realistic case and two idealized cases (NoMR and NoMR/NoPrecip). Please note that NoMR case is without the Mississippi River discharge and NoMR/NoPrecip case is without the Mississippi River discharge and Precipitation. This dataset supports the publication: Androulidakis, Y., Kourafalou, V., Le Hénaff, M., Kang, H., Sutton, T., Chen, S., Hu, C., & Ntaganou, N. (2019). Offshore spreading of Mississippi waters: pathways and vertical structure under eddy influence. Journal of Geophysical Research: Oceans. doi:10.1029/2018jc014661
本数据集基于高分辨率(1/50度)墨西哥湾混合坐标海洋模式(Gulf of Mexico Hybrid Coordinate Ocean Model, GoM-HYCOM)的归档数据,该模式可细致刻画与密西西比河羽流动力过程相关的锋面与细丝结构,同时涵盖本研究关注的墨西哥湾中尺度过程——特别是环流转涡(Loop Current, LC)锋面动力过程及其对羽流输运的影响。 数据集包含以下三类内容: 1. 2015年8月的温度与盐度场,垂向覆盖至1500米,共设11个深度层次,分别为5、10、15、25、50、100、150、300、500、1000、1500米; 2. 2015年7月1日至9月30日期间,沿25.5°N断面的盐度低于35的水体输运量(单位:斯维德鲁普,Sv); 3. 2015年两个实测密西西比河分支区域(东侧区域:24.5°N-28.5°N,87°W-84°W;西侧区域:23°N-28.5°N,92°W-885°W)以及佛罗里达海峡(23.2°N-24.7°N,85°W-81.25°W)的平均海表盐度(Sea Surface Salinity, SSS)时间序列。该时间序列的数据来源包含1个真实情景与2个理想情景:无密西西比河径流情景(NoMR),以及无密西西比河径流且无降水情景(NoMR/NoPrecip)。其中,NoMR情景未引入密西西比河径流输入,NoMR/NoPrecip情景未引入密西西比河径流与降水输入。 本数据集支撑以下已发表论文: Androulidakis, Y., Kourafalou, V., Le Hénaff, M., Kang, H., Sutton, T., Chen, S., Hu, C., & Ntaganou, N. (2019). 密西西比水体的近海扩散:涡旋影响下的输运路径与垂向结构. 《地球物理研究杂志:海洋》. doi:10.1029/2018jc014661



