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Widespread global disparities between modelled and observed mid-depth ocean currents
Su, Fenzhen1,2,3,4; Fan, Rong1,2; Yan, Fengqin1,2; Meadows, Michael3,5,6; Lyne, Vincent7; Hu, Po8; Song, Xiangzhou9; Zhang, Tianyu10; Liu, Zenghong11; Zhou, Chenghu1,2; Pei, Tao1,2; Yang, Xiaomei1,2; Du, Yunyan1,2; Wei, Zexun12; Wang, Fan8; Qi, Yiquan9; Chai, Fei11,13
Corresponding AuthorSu, Fenzhen(
AbstractAnalysis of big Argo data reveals that model representation of global ocean circulation near 1000-m depth is substantially compromised by inaccuracies. Only 3.8% of the mid-depth ocean circulation can be considered accurately modelled. The mid-depth ocean circulation is critically linked to actual changes in the long-term global climate system. However, in the past few decades, predictions based on ocean circulation models highlight the lack of data, knowledge, and long-term implications in climate change assessment. Here, using 842,421 observations produced by Argo floats from 2001-2020, and Lagrangian simulations, we show that only 3.8% of the mid-depth oceans, including part of the equatorial Pacific Ocean and the Antarctic Circumpolar Current, can be regarded as accurately modelled, while other regions exhibit significant underestimations in mean current velocity. Knowledge of ocean circulation is generally more complete in the low-latitude oceans but is especially poor in high latitude regions. Accordingly, we propose improvements in forecasting, model representation of stochasticity, and enhancement of observations of ocean currents. The study demonstrates that knowledge and model representations of global circulation are substantially compromised by inaccuracies of significant magnitude and direction, with important implications for modelled predictions of currents, temperature, carbon dioxide sequestration, and sea-level rise trends.
Indexed BySCI
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDA19060304] ; National Natural Science Foundation of China[41890854]
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:001003644100031
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorSu, Fenzhen
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Nanjing Univ, Sch Geog & Ocean Sci, Nanjing 210093, Peoples R China
4.Nanjing Univ, Collaborat Innovat Ctr South China Sea Studies, Nanjing, Peoples R China
5.Univ Cape Town, Dept Environm & Geog Sci, ZA-7701 Rondebosch, South Africa
6.Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Peoples R China
7.Univ Tasmania, IMAS Hobart, Hobart, Tas 7004, Australia
8.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
9.Hohai Univ, Coll Oceanog, Nanjing 211100, Peoples R China
10.Guangdong Ocean Univ, Coll Oceanog & Meteorol, Zhanjiang 524088, Peoples R China
11.Minist Nat Resources, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Peoples R China
12.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Sci & Numer Modeling, Qingdao 266061, Peoples R China
13.Xiamen Univ, Coll Ocean & Earth Sci, Xiamen 361102, Peoples R China
Recommended Citation
GB/T 7714
Su, Fenzhen,Fan, Rong,Yan, Fengqin,et al. Widespread global disparities between modelled and observed mid-depth ocean currents[J]. NATURE COMMUNICATIONS,2023,14(1):9.
APA Su, Fenzhen.,Fan, Rong.,Yan, Fengqin.,Meadows, Michael.,Lyne, Vincent.,...&Chai, Fei.(2023).Widespread global disparities between modelled and observed mid-depth ocean currents.NATURE COMMUNICATIONS,14(1),9.
MLA Su, Fenzhen,et al."Widespread global disparities between modelled and observed mid-depth ocean currents".NATURE COMMUNICATIONS 14.1(2023):9.
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