首页 | 期刊介绍 | 编委会 | 道德声明 | 投稿指南 | 常用下载 | 过刊浏览 | In English
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 181次   下载 244 本文二维码信息
码上扫一扫!
分享到: 微信 更多
六套海洋模式模拟热带西太平洋深层环流结果的对比分析
马强1,2, 汪嘉宁1,3, 王凡1,2,3
1.中国科学院海洋研究所海洋环流与波动重点实验室 青岛 266071;2.中国科学院大学 北京 100049;3.青岛海洋科学与技术国家实验室海洋动力过程与气候变化实验室 青岛 266235
摘要:
借助于六套海洋模式资料,本文初步分析了热带西太平洋深层环流的基本特征。与气候态数据集WOA13相比,水深3000m层除HYCOM以正温度偏差为主外,其余模式均为负温度偏差,且随着深度增加偏差幅度变大。盐度偏差方面,HYCOM和OFES以正偏差为主,其余模式以负偏差为主。温盐偏差在各个深海海盆中的时间变化趋势不尽相同,且与实际观测结果存在较大差异。水深1000—3000m以纬向东西向交替变化的射流为主。3000—5000m的纬向流速减小,形成海盆内环流,不同海盆之间可通过深水通道进行海水交换。3000m以深的关键深海通道的输运通量存在明显的季节变化,甚至不同季节流向也不一致,而海盆内的环流形态受制于位涡收支积分约束方程,进而也表征出季节变化的特征,即不同季节海盆内的环流主要旋转形态不同。在分析了初始温盐场、潮汐及其他要素对深海环流的影响后,本文为日后构建适合热带西太平洋深海环流研究的模式提供了建议。
关键词:  深层环流  海洋模式  温盐偏差  深海通道  季节变化  数值模拟
DOI:10.11693/hyhz20170600159
分类号:P731
基金项目:中国科学院战略性先导科技专项(A类)项目,XDA11010204号;国家自然科学基金项目,41406015号,41421005号;国家海洋局全球变化与海气相互作用专项项目,GASI-IPOVAI-01-01号;青岛海洋科学与技术国家实验室鳌山科技创新计划项目,2016ASKJ12号。
DEEP-LAYER CIRCULATIONS IN TROPICAL WESTERN PACIFIC OCEAN BASED ON SIX OCEAN MODELS OUTPUTS
MA Qiang1,2, WANG Jia-Ning1,3, WANG Fan1,2,3
1.Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2.University of Chinese Academy of Sciences, Beijing 100049, China;3.Laboratory for Ocean and Climate Dynamics, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, China
Abstract:
We conducted a preliminary analysis on deep-layer circulation in the tropical western Pacific using six ocean models outputs. In comparison with WOA13, the HYCOM's deep temperature deviation at 3000 m is mainly positive, while other five models' are negative. The deep temperature deviations increase with depth. The deep salinity deviations of HYCOM and OFES are mainly positive, while other models' are mainly negative. Both the temporal trends of mean temperature and salinity deviations are different from the observations. The currents between 1000 and 3000m are dominated by alternating westward and eastward zonal jets. The zonal velocity decreases quickly below 3000m, and the circulations are separated by different basins between 3000 and 5000m, but the seawater exchange can take place through deep-layer passages among basins. The transport in deep-layer passages shows seasonal variability; moreover, the direction of current in some deep layers could be opposite in different seasons. The pattern of circulation is controlled by potential vorticity constraint equation, and thus also shows seasonal variation, indicating temporal difference in the form of major rotations in these basins. In addition, we discussed the impacts of T/S initial value, tide, and other factors on the deep circulations, and proposed suggestions for future improvement in the modeling.
Key words:  deep-layer circulation  ocean models  temperature and salinity deviations  deep-layer passages  seasonal variability  numerical modeling
版权所有 《海洋与湖沼》编辑部 Copyright©2008 All Rights Reserved
主管单位:中国科学技术协会 主办单位:中国海洋湖沼学会 中国科学院海洋研究所
地址:青岛市南海路七号  邮编:266071  电话:0532-82898753  E-mail:liuxiujuan@qdio.ac.cn
技术支持:北京勤云科技发展有限公司