Reconciling opposite trends in the observed and simulated equatorial Pacific zonal sea surface temperature gradient
文献类型：期刊论文
| 作者 | Bai, Wenrong1,2,6; Liu, Hailong1,5,6; Lin, Pengfei1,6; Li, Xichen3; Wang, Fan4,5
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| 刊名 | GEOSCIENCE LETTERS
 |
| 出版日期 | 2023-11-23 |
| 卷号 | 10期号:1页码:12 |
| 关键词 | Equatorial Pacific zonal sea surface temperature gradient CMIP6 Large ensemble simulations Model bias Internal variabilities Projection |
| ISSN号 | 2196-4092 |
| DOI | 10.1186/s40562-023-00309-3 |
| 通讯作者 | Liu, Hailong(lhl@lasg.iap.ac.cn) |
| 英文摘要 | The reasons for large discrepancies between observations and simulations, as well as for uncertainties in projections of the equatorial Pacific zonal sea surface temperature (SST) gradient, are controversial. We used CMIP6 models and large ensemble simulations to show that model bias and internal variabilities affected, i.e., strengthened, the SST gradient between 1981 and 2010. The underestimation of strengthened trends in the southeast trade wind belt, the insufficient cooling effect of eastern Pacific upwelling, and the excessive westward extension of the climatological cold tongue in models jointly caused a weaker SST gradient than the recent observations. The phase transformation of the Interdecadal Pacific Oscillation (IPO) could explain similar to 51% of the observed SST gradient strengthening. After adjusting the random IPO phase to the observed IPO change, the adjusted SST gradient trends were closer to observations. We further constrained the projection of SST gradient change by using climate models' ability to reproduce the historical SST gradient intensification or the phase of the IPO. These models suggest a weakened SST gradient in the middle of the twenty-first century. |
| WOS关键词 | SST WARMING PATTERN ; TROPICAL PACIFIC ; COLD-TONGUE ; MULTIMODEL ENSEMBLE ; WALKER CIRCULATION ; OCEAN ; MODEL ; VARIABILITY ; UNCERTAINTY ; FEEDBACK |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences |
| WOS研究方向 | Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001121864600001 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/184236]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Liu, Hailong |
| 作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geoph, Beijing 100029, Peoples R China 2.Beijing Meteorol Bur, Beijing Municipal Climate Ctr, Beijing 100089, Peoples R China 3.Chinese Acad Sci, Inst Atmospher Phys, Int Ctr Climate & Environm Sci ICCES, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Wenrong,Liu, Hailong,Lin, Pengfei,et al. Reconciling opposite trends in the observed and simulated equatorial Pacific zonal sea surface temperature gradient[J]. GEOSCIENCE LETTERS,2023,10(1):12. |
| APA | Bai, Wenrong,Liu, Hailong,Lin, Pengfei,Li, Xichen,&Wang, Fan.(2023).Reconciling opposite trends in the observed and simulated equatorial Pacific zonal sea surface temperature gradient.GEOSCIENCE LETTERS,10(1),12. |
| MLA | Bai, Wenrong,et al."Reconciling opposite trends in the observed and simulated equatorial Pacific zonal sea surface temperature gradient".GEOSCIENCE LETTERS 10.1(2023):12. |
入库方式： OAI收割
来源：海洋研究所
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