The identification and quantification of global change, including climate change, requires long time series of key variables. In this work, the fundamentals and operation of low-cost long-term coastal observatories are described, and preliminary data are shown. The vision is to offer a scientific platform of physicochemical data for at least the next 100 years, what requires establishing sustainable strategies, training human resources, strong institutional support, and long-term funding sources. The network formally operates since 2013 and has generated more than 6 million data points, continuously growing, of which >1.5 million data points are permanently stored and available through a public access web platform. The strategies and methodologies are described and, in the Mazatlan observatory, data recovery and basic statistics of eight environmental variables are presented. During 2015, an extreme El Niño year, marine temperatures increased from the bay to the middle Urias coastal lagoon, were higher than atmospheric temperatures, and showed the impact of a thermal power plant. In surface waters of Mazatlan bay, hypoxic periods were also observed. It is expected that results will foster the development of other projects, and will be useful to the scientific community and decision makers, for a better management of coastal ecosystems worldwide.

对包括气候变化在内的全球变化的识别和量化需要长期的关键变量序列。在这项工作中，描述了低成本长期沿海天文台的基本原理和操作，并显示了初步数据。愿景是至少在未来100年内提供一个物理化学数据的科学平台，这需要制定可持续战略，培训人力资源，强大的机构支持和长期资金来源。该网络自2013年以来正式运营，已经生成了超过600万个数据点，并且在不断增长，其中超过150万个数据点被永久存储并可以通过公共访问Web平台使用。描述了这些策略和方法，在马萨特兰天文台中，介绍了八个环境变量的数据恢复和基本统计​​数据。在2015年（极端厄尔尼诺现象），海洋温度从海湾上升至乌里亚斯中部沿海泻湖，高于大气温度，并显示出火力发电厂的影响。在马萨特兰湾的地表水中，也观察到了缺氧期。预期结果将促进其他项目的发展，并将对科学界和决策者有用，以便更好地管理全世界的沿海生态系统。还观察到缺氧期。预期结果将促进其他项目的发展，并将对科学界和决策者有用，以便更好地管理全世界的沿海生态系统。还观察到缺氧期。预期结果将促进其他项目的发展，并将对科学界和决策者有用，以便更好地管理全世界的沿海生态系统。