徐寄遥：编织“观天巨网”，守望日地空间

Core Insights - The core focus of the article is on the successful completion and significance of the Meridian Project Phase II, which enhances China's capabilities in monitoring space weather and understanding the solar-terrestrial environment [5][10]. Project Overview - The Meridian Project, officially known as the Ground-based Comprehensive Monitoring Network for Space Environment, is a major national scientific infrastructure aimed at monitoring space weather events that primarily propagate along the meridian direction [5]. - The project aims to provide real-time support for space weather forecasting by monitoring changes in the solar-terrestrial environment with high temporal and spatial resolution [5][10]. Technical Advancements - Phase II of the Meridian Project has achieved a significant leap from "having" to "being strong," establishing a complete monitoring chain from the sun to various layers of the Earth's space environment [10]. - The project has deployed 282 sets of advanced monitoring equipment, including globally unique devices such as the largest integrated aperture radio telescope and the most powerful incoherent scatter radar [11][10]. Network Structure - The monitoring network is structured around a "one chain, three networks, and four focuses" framework, which includes a comprehensive monitoring chain and a grid-like network covering key geographical areas [6][10]. - The project utilizes a unified management and collaborative operation system to ensure continuous and comprehensive monitoring across all stations [8]. Challenges and Solutions - The construction faced significant challenges, including harsh environmental conditions and the need for new technology integration between Phase I and Phase II [7][12]. - Solutions included upgrading existing equipment, standardizing data output, and integrating historical data into a new database [12]. Future Directions - The Meridian Project aims to expand its reach globally and develop a joint monitoring system that combines satellite and ground-based observations for more accurate space weather forecasting [13]. Team Composition - The project team consists of nearly 800 researchers from 16 different institutions, with a diverse range of expertise in various fields of space science [14]. - The team emphasizes nurturing young talent and fostering a collaborative environment to drive innovation and scientific breakthroughs [15][18].