Increased Shortwave Radiation Dampens Summertime SST Tendency in Mid-Latitude Oceans Under Future Warming Scenarios
文献类型：期刊论文
| 作者 | Tian, Feng1,3,4; Zhang, Rong-Hua1,2 |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2025-10-14 |
| 卷号 | 52期号:20页码:13 |
| ISSN号 | 0094-8276 |
| DOI | 10.1029/2025GL117068 |
| 通讯作者 | Tian, Feng(tianfeng@qdio.ac.cn) ; Zhang, Rong-Hua(rzhang@nuist.edu.cn) |
| 英文摘要 | Shortwave radiation penetrating through the bottom of the mixed layer (ML) (Q(pen)) significantly modulates sea surface temperature (SST) variability. Here, we show that summertime Q(pen) is projected to increase by 3.9 (3.7) +/- 1.9 (1.6) W m(-2) in the northern (southern) mid-latitude oceans under the high emission scenario (SSP5-8.5) during 2051-2100 compared to the historical simulation during 1951-2000. This increase is driven primarily by a ML shoaling, and secondarily by a reduction of chlorophyll in summer. The latter exerts a pronounced impact on Q(pen), resulting from higher sensitivity of Q(pen) to seasonal chlorophyll reduction in mid-latitude oceans due to the shoaling of the summertime ML. Furthermore, the enhanced Q(pen) reduces the magnitude of SST tendency by 25.3% in summer, thereby weakening summertime month-to-month SST tendency in these regions. These results highlight the critical role played by Q(pen) in ocean warming, requiring a better representation of radiation penetration in climate models. Plain Language Summary Climate model simulations project an intensification of the sea surface temperature (SST) seasonal cycle in mid-latitude oceans under a warming climate. While this seasonal amplification is primarily driven by mixed layer (ML) shallowing, a secondary effect of the shoaling ML is an increase in the fraction of solar radiation penetrating below the ML (Q(pen)) during summertime. However, the potential influence of this enhanced Q(pen) on SST tendency in summer remains unexplored. Our analysis reveals that summertime Q(pen) increases by 3.8 W m(-2) in the mid-latitude oceans during the latter half of the 21st century-comparable in magnitude to the rise in the surface heat flux. This enhanced Q(pen) significantly alleviates summertime SST tendency by 25.3%, acting to offset the greenhouse-gas-induced increase in net surface heat flux. These findings underscore the crucial role of Q(pen) in modulating future ocean warming and emphasize the need for improving representation of subsurface radiative processes in climate models. |
| WOS关键词 | HYBRID COUPLED MODEL ; MIXED-LAYER ; EQUATORIAL PACIFIC ; ANNUAL CYCLE ; PENETRATIVE RADIATION ; GENERAL-CIRCULATION ; SOLAR-RADIATION ; CLIMATE ; IMPACT ; TEMPERATURE |
| 资助项目 | Laoshan Laboratory |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001593793800001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203596]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Tian, Feng; Zhang, Rong-Hua |
| 作者单位 | 1.Qingdao Marine Sci & Technol Ctr, Lab Ocean Dynam & Climate, Qingdao, Peoples R China 2.Nanjing Univ Informat Sci & Technol, State Key Lab Climate Syst Predict & Risk Manageme, Nanjing, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Lab Ocean Circulat & Waves, Qingdao, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Feng,Zhang, Rong-Hua. Increased Shortwave Radiation Dampens Summertime SST Tendency in Mid-Latitude Oceans Under Future Warming Scenarios[J]. GEOPHYSICAL RESEARCH LETTERS,2025,52(20):13. |
| APA | Tian, Feng,&Zhang, Rong-Hua.(2025).Increased Shortwave Radiation Dampens Summertime SST Tendency in Mid-Latitude Oceans Under Future Warming Scenarios.GEOPHYSICAL RESEARCH LETTERS,52(20),13. |
| MLA | Tian, Feng,et al."Increased Shortwave Radiation Dampens Summertime SST Tendency in Mid-Latitude Oceans Under Future Warming Scenarios".GEOPHYSICAL RESEARCH LETTERS 52.20(2025):13. |
入库方式： OAI收割
来源：海洋研究所
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