气候变化领域集成服务门户(CCPortal): Evidence of climate-driven changes on atmospheric; hydrological; and oceanographic variables along the Chilean coastal zone

CCPortal

DOI	10.1007/s10584-020-02805-3
	Evidence of climate-driven changes on atmospheric; hydrological; and oceanographic variables along the Chilean coastal zone
	Grez P.W.; Aguirre C.; Farías L.; Contreras-López M.; Masotti Í.
发表日期	2020
ISSN	0165-0009
英文摘要	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. © 2020, The Author(s).
英文关键词	Climate change; Coastal processes; Decadal trends
语种	英语
scopus关键词	Chlorophyll; Coastal zones; Ocean currents; Rain; Risk management; Surface waters; Climate variability; Coastal communities; Coastal upwelling; Cumulative impacts; Homogenization procedure; Sea level pressure; Sea surface temperature (SST); Subtropical anticyclone; Sea level
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147271
作者单位	Escuela de Ingeniería Civil Oceánica, Universidad de Valparaíso, Valparaíso, Chile; Centro de Investigación y Gestión de Desastres Naturales (CIGIDEN-PUC), Santiago, Chile; Centro de Observación Marino para estudios de Riesgos del Ambiente Costero (COSTAR-UV), Valparaíso, Chile; Centro de Ciencia del Clima y la Resiliencia (CR2), Santiago, Chile; Departamento de Oceanografía, Universidad de Concepción, Concepción, Chile; Facultad de Ingeniería y Centro de Estudios Avanzados, Universidad de Playa Ancha, Valparaíso, Chile; Facultad de Ciencias del Mar y de Recursos Naturales, Universidad de Valparaíso, Valparaíso, Chile
推荐引用方式 GB/T 7714	Grez P.W.,Aguirre C.,Farías L.,et al. Evidence of climate-driven changes on atmospheric; hydrological; and oceanographic variables along the Chilean coastal zone[J],2020.
APA	Grez P.W.,Aguirre C.,Farías L.,Contreras-López M.,&Masotti Í..(2020).Evidence of climate-driven changes on atmospheric; hydrological; and oceanographic variables along the Chilean coastal zone.Climatic Change.
MLA	Grez P.W.,et al."Evidence of climate-driven changes on atmospheric; hydrological; and oceanographic variables along the Chilean coastal zone".Climatic Change (2020).