The Chilean coastal zone (CCZ) is subjected to a complex spectrum of anthropogenic, geophysical, biogeochemical, and climate-driven perturbations. Potentially affected variables including atmospheric sea level pressure (Pa), alongshore wind, sea surface temperature (SST), chlorophyll-a, rainfall, river discharge, relative mean sea level (RMSL), and wave climate are studied using in situ and satellite records, hindcasts, and reanalysis datasets. Linear temporal trends and correlations of anomalies are estimated between 18°S and 55°S along the CCZ. The comparison of some of the variables is achieved by means of a strict homogenization procedure on a monthly basis for 35 years. Our findings show that the poleward drift and strengthening of the Southeast Pacific Subtropical Anticyclone (SPSA) partially explains the increase in Pa and reduction in rainfall and river discharge. The enhancement of alongshore winds, also attributable to changes in the SPSA, increases coastal upwelling, which in turn could reduce SST and increase chlorophyll-a. Despite differential latitudinal responses, increasing wave heights and a southward rotation are evidenced. RMSL does not show significant variation as it is presumably affected by seafloor changes during the seismic cycle. Though some correlations are evidenced, the influence of climate variability at decadal scale (PDO, SAM) may be affecting the detected trends due to the short length of available data. Impacts on coastal communities, infrastructure, and ecosystems are discussed, aiming to highlight that coastal vulnerabilities and risk management should be based on the cumulative impacts of these variables.

中文翻译：

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智利沿海地区大气、水文和海洋变量的气候驱动变化的证据

智利沿海地区 (CCZ) 受到一系列复杂的人为、地球物理、生物地球化学和气候驱动的扰动。使用原位和卫星记录研究了可能受影响的变量，包括大气海平面压力 (Pa)、沿岸风、海面温度 (SST)、叶绿素 a、降雨量、河流流量、相对平均海平面 (RMSL) 和波浪气候、后报和再分析数据集。沿 CCZ 在 18°S 和 55°S 之间估计了异常的线性时间趋势和相关性。一些变量的比较是通过严格的均质化程序在 35 年内每月进行的。我们的研究结果表明，东南太平洋副热带反气旋 (SPSA) 的极地漂移和加强部分解释了 Pa 的增加以及降雨和河流流量的减少。沿海岸风的增强，也归因于 SPSA 的变化，增加了沿海上升流，这反过来又会降低 SST 并增加叶绿素 a。尽管有不同的纬度响应，但证据表明波高增加和向南旋转。RMSL 没有显示出显着的变化，因为它可能受到地震周期中海底变化的影响。尽管证明了一些相关性，但由于可用数据的长度较短，年代际尺度（PDO、SAM）气候变率的影响可能会影响检测到的趋势。讨论了对沿海社区、基础设施和生态系统的影响，