首页 | 期刊简介 | 编委会 | 投稿指南 | 常用下载 | 联系我们 | 期刊订阅 | In English
引用本文:李菁楠,陈学恩.不同辐射背景下大西洋热盐环流下 沉区混合层深度变化.海洋与湖沼,2014,45(4):676-684.
【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 2427次   下载 1902 本文二维码信息
码上扫一扫!
分享到: 微信 更多
不同辐射背景下大西洋热盐环流下 沉区混合层深度变化
李菁楠,陈学恩
中国海洋大学,中国海洋大学
摘要:
基于政府间气候变化专门委员会(Intergovernmental Panel on Climate Change, IPCC)4 种最新辐射强迫情景, 利用ECHAM5/MPI-OM(European Centre Hamburg Model 5/ Max Planck Institute Ocean Model)气候模式输出的1850—2300 年逐月混合层深度、海表面温度、海表面盐度数据, 分析大西洋热盐环流下沉区混合层深度的变化情况。结果表明: 随辐射强迫增加, 热盐环流下沉区混合层深度下降, 混合层深度振荡周期在格陵兰-冰岛-挪威海(Greenland Sea – Iceland Sea – Norwegian Sea, GIN)海域减小, 在拉布拉多海(Labrador Sea, LAB)海域变化不大; 与GIN 海域相比, LAB 海域混合层深度对辐射强迫变化更敏感; 两海区温度对混合层深度的影响时间较长, 混合层深度对盐度的变化反应迅速; 混合层深度变化的主导因素在LAB 海域中为盐度, 而在GIN 海域,低辐射强迫下温度主导混合层深度变化, 中高辐射强迫下温度与盐度共同起主导作用。
关键词:  辐射强迫  混合层  热盐环流  代表性浓度路径(representative concentration pathways, Rcps)  海气耦合
DOI:10.11693/hyhz20130600069
分类号:P725
基金项目:海洋公益性行业科研专项经费资助项目, 201005019 号
附件
ANALYSIS ON MIXED LAYER DEPTH IN ATLANTIC THERMOHALINE-CIRCULATION DOWN-WELLING AREA IN DIFFERENT RADIATIVE FORCING SCENARIOS
Li Jingnan and Chen Xueen
Ocean University of China,Ocean University of China
Abstract:
Based on four radiative forcing scenarios from IPCC (Intergovemmental Panel on Climate Change), we used the ECHAM5/MPI-OM model’s outputs (monthly data time from 1850 to 2300), including monthly mixed layer depth data, sea surface data, and sea surface salinity data, to analyze the variability of mixed layer depth in thermohaline circulation (THC) down-welling area. The result shows that along with the radiative forcing rises, the mixed layer depth declined in both down-welling areas, the oscillation period of mixed layer depth declines in Greenland Sea - Iceland Sea – Norwegian Sea area (GIN) when the radiative forcing climbs, which does not occurs in Labrador Sea (LAB) area. The LAB area is more sensitive to the radiative forcing change than the GIN area. In both GIN and LAB areas, the impact of sea surface temperature on mixed layer depth is long-lasting and response of mixed layer depth to sea surface salinity change is prompt The main factor for inducing variability of mixed layer depth in LAB area is salinity, while in GIN area, it depends on radiative forcing scenarios
Key words:  radiative forcing  mixed layer  THC (thermohaline circulation)  Rcps (representative concentration pathways)  atmosphere-ocean coupled model
版权所有 海洋与湖沼 Oceanologia et Limnlolgia Sinica Copyright©2008 All Rights Reserved
主管单位:中国科协技术协会 主办单位:中国海洋湖沼学会
地址:青岛市海军路88号  邮编:266400  电话:0532-82898753  E-mail:ols@qdio.ac.cn
技术支持:北京勤云科技发展有限公司