Geographical inhomogeneity and temporal variability of mixing property and driving mechanism in the Arctic Ocean
文献类型：CNKI期刊论文
| 作者 | Jia YOU ; Zhenhua XU; Robin ROBERTSON; Qun LI; Baoshu YIN
|
| 发表日期 | 2022-05-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | mixing the Arctic Ocean near-inertial waves stratification heat flux |
| 英文摘要 | Upper ocean mixing play s a key role in the atmo sphere-ocean heat transfer and sea ice extent and thickne ss via modulating the upper ocean temperatures in the Arctic Ocean.Observations of diffusivities in the Arctic that directly indicate the ocean mixing properties are sparse.Therefore,the spatiotemporal pattern and magnitude of diapycnal diffusivities and kinetic energy dissipation rates in the upper Arctic Ocean are important for atmosphere-ocean heat transfers and sea ice changes.These were first estimated from the Ice-Tethered Profilers dataset(2005-2019) using a strain-based fine-scale parameterization.The resultant mixing properties showed significant geographical inhomogeneity and temporal variability.Diapycnal diffusivities and dissipation rates in the Atlantic sector of the Arctic Ocean were stronger than those on the Pacific side.Mixing in the Atlantic sector increased significantly during the observation period;whereas in the Pacific sector,it weakened before 2011 and then strengthened.Potential impact factors include wind,sea ice,near inertial waves,and stratification,while their relative contributions vary between the two sectors of the Arctic Ocean.In the Atlantic sector,turbulent mixing dominated,while in the Pacific sector,turbulent mixing was inhibited by strong stratification prior to 2011,and is able to overcome the stratification gradually after 2014.The vertical turbulent heat flux constantly increased in the Atlantic sector year by year,while it decreased in the Pacific sector post 2010.The estimated heat flux variability induced by enhanced turbulent mixing is expected to continue to diminish sea ice in the near future. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Key Research and Development Program of China (Nos.2019YFE0105700,2017YFA0604102) ; the Strategic Priority Research Program of Chinese Academy of Sciences (Nos.XDB42000000,XDA22050202) ; the National Natural Science Foundation of China (Nos.92058202,41676006,42176244) ; the Key Deployment Project of Centre for Ocean Mega-Research of Science,Chinese Academy of Sciences(No.COMS2020Q07) ; the CAS-CSIRO Jointly MHW Project (No.133244KYSB20190031) |
| 卷 | v.40期:03页:18-41 |
| 语种 | 英文; |
| 分类号 | P467;P731.15 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/187431]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.China-AseanCollegeofMarineScience,XiamenUniversityMalaysia 2.CASKeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 3.MNRKeyLaboratoryforPolarScience,PolarResearchInstituteofChina 4.PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 5.CenterforOceanMega-Science,ChineseAcademyofSciences 6.CollegeofEarthandPlanetarySciences,UniversityofChineseAcademyofSciences 7.CASEngineeringLaboratoryforMarineRanching,InstituteofOceanology,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Jia YOU,Zhenhua XU,Robin ROBERTSON,et al. Geographical inhomogeneity and temporal variability of mixing property and driving mechanism in the Arctic Ocean. 2022. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。