Unraveling Regional Patterns of Sea Level Acceleration over the China Seas
Unraveling Regional Patterns of Sea Level Acceleration over the China Seas
复制标题
DOI：
10.3390/rs15184448
复制
发表时间：
2023-09
期刊：
影响因子：
--
通讯作者：
Ying Qu;S. Jevrejeva;Shijin Wang
中科院分区：
文献类型：
--
作者：
Ying Qu;S. Jevrejeva;Shijin Wang
海平面加速上升使沿海社区处于弱势地位；然而，中国海平面加速的过程仍不确定。在这项研究中，我们研究了中国海域的海平面加速及其影响因素。我们利用卫星测高和潮汐计记录计算中国沿海的加速度。在卫星测高时代，潮汐计记录的海平面加速度在所有站点上都有所不同，达到0.30±0.20毫米/年，而卫星测高可能会低估/高估大多数地点的海平面加速度。除渤海外，沿海地区的加速度主要由质量分量的变化驱动。相比之下，对于公海来说，空间海平面的变化是海平面加速的主要贡献者。中国海空间加速度模式的演变表明，ENSO和PDO变异主导着公海（包括菲律宾海到立体海平面）海平面加速度的变化模式，而大多数沿海地区的变化是由非空间分量造成的。
Accelerated sea level rise is placing coastal communities in a vulnerable position; however, the processes underlying sea level acceleration in China remain uncertain. In this study, we examine the sea level acceleration and its contributors over the China Seas. We calculate acceleration along the Chinese coast using satellite altimetry and tide gauge records. During the satellite altimetry era, sea level acceleration from tide gauge records varies across all stations, reaching up to 0.30 ± 0.20 mm/yr2, while satellite altimetry could underestimate/overestimate the sea level acceleration in most locations. Acceleration near the coast, except in the Bohai Sea, is mainly driven by changes in the mass component. In contrast, for the open ocean, changes in steric sea level are the main contributor to sea level acceleration. The evolution of spatial acceleration patterns over the China Seas reveals that the ENSO and PDO variabilities dominate the changing patterns of sea level acceleration in the open ocean, including the Philippine Sea through steric sea level, and changes in most coastal locations are due to the non-steric component.