首页 >  广东海洋大学学报 >  基于不同海洋再分析资料的吕宋海峡热能输送及其变化

2022, 42(5): 72-81. doi: 10.3969/j.issn.1673-9159.2022.05.009

基于不同海洋再分析资料的吕宋海峡热能输送及其变化

1. 广东海洋大学海洋与气象学院;

2. 中国气象局-广东海洋大学海洋气象联合实验室;

3. 广东海洋大学广东省高等学校陆架及深远海气候资源与环境重点实验室, 广东 湛江 524088;

2. 斯德哥尔摩大学自然地理系, 瑞典斯德哥尔摩 SE-10691

收稿日期:2022-04-20
修回日期:2022-04-20

基金项目:   广东海洋大学科研启动项目(R17056);国家留学基金(CSC, No.201908440188)  国家自然科学基金重点项目(42130605)  广东省联合基金重点项目(2019B1515120018)  国家自然科学基金面上项目(42075036, 41875071) 

关键词: 吕宋海峡 , 热能输运 , 海洋再分析

Variations of Ocean Heat Transport through the Luzon Strait Based on Global Ocean Ensemble Reanalysis

1. College of Ocean and Meteorology, Guangdong Ocean University;

2. CMA-GDOU Joint Laboratory for Marine meteorology;

3. Key Laboratory of Climate, Resources, and Environment in Continental Shelf Sea and Deep Sea, Zhanjiang 524088, China;

2. Department of Physical Geography, Stockholm University, Stockholm SE-10691, Sweden

Received Date:2022-04-20
Accepted Date:2022-04-20

Keywords: Luzon Strait , ocean heat transport , ocean reanalysis

【目的】揭示吕宋海峡热能输运的季节和年际变化特征,并评估不同海洋再分析资料计算结果的异同。【方法】基于CMEMS 的1993-2019 年四套海洋再分析资料,通过对比分析,研究吕宋海峡120.75oE 剖面热能输运的季节和年际变化特征。【结果】通过吕宋海峡的热能输送主要发生在500 m 以浅,呈“流套型”或者“弯曲型”结构。净的热能输送以输入南海为主,夏季微弱净流出,其他季节是净流入,冬季最强。吕宋海峡净热输运年际变化存在约6 a 周期,与ENSO 显著正相关(P < 0.05),在ENSO 发展期的10 月份和衰退期的4 月份相关系数最高。【结论】吕宋海峡净热输运及相关流场和混合层的季节变化受南海季风和海洋环境季节变化影响显著,在年际尺度主要体现为与ENSO 相关的变化特征。四套资料在描述吕宋海峡热能输运的季节和年际变化方面有较好的一致性,但是在输运强度和流场结构变化方面存在显著差异,其中FOAM资料的差异性较为明显。

【Objective】 To investigate the seasonal to annual variations of ocean heat transport through the Luzon Strait and to evaluate the consistency and discrepancy of multiple ocean reanalysis datasets.【Method】Based on monthly oceanographic data(1993-2019)from CMEMS Global Ocean Ensemble Reanalysis, the seasonal cycle and interannual variability of ocean heat transport through the 120.75oE profile at the Luzon Strait were studied by comparing the consistency and discrepancy in these four datasets.【Result】The ocean heat transport through the Luzon Strait mainly occurs at a depth of shallower than 500 meters, showing “Loop Current” or “Bending Current” structure.Net ocean heat transport through the Luzon Strait generally shows an inflow to the South China Sea.These datasets show weak net outflows during summer, and net inflows during other seasons, most pronounced in winter.The interannual variations of the net heat transport in the Luzon Strait show a density peak at about 6 years, which is significantly positively correlated with ENSO (P < 0.05), with the highest correlations in October of the ENSO developing year and April of the decaying year.【Conclusion】The seasonal changes of surface ocean flow and mixed layer depth associated with net heat transport variations through the Luzon Strait are significantly related to the South China Sea monsoon and oceanic seasonal changes, while for interannual variation, their variations are related to ENSO interannual variability.There is consistencyin describing the seasonal and interannual variabilities of ocean heat transport through the Luzon Strait among these four datasets.but discrepancies in transport intensity and ocean current structure are also significant, especially for the FOAM data.

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基于不同海洋再分析资料的吕宋海峡热能输送及其变化