风云四号C星成功发射 综合探测能力大幅提升

Core Viewpoint - The successful launch of the Fengyun-4C satellite enhances China's meteorological monitoring capabilities, particularly in response to extreme weather events, and supports the national strategy for improving disaster prevention infrastructure [1][2]. Group 1: Satellite Launch and Features - The Fengyun-4C satellite was launched on December 27, 2023, using the Long March 3B rocket, and is the latest member of the second-generation geostationary meteorological satellite series [1]. - Fengyun-4C will replace the aging Fengyun-4A satellite and work alongside Fengyun-4B to establish a "dual-satellite operation and on-orbit backup" system [1]. - The satellite is equipped with six advanced payloads that meet international standards, significantly improving monitoring capabilities for small to medium-scale weather systems [2]. Group 2: Enhanced Monitoring Capabilities - The geostationary radiation imager's spatial resolution has doubled, allowing for detection of China and surrounding areas every 5 minutes, with continuous rapid imaging every minute [2]. - The interferometric atmospheric vertical profiler's spatial resolution has improved from 12 kilometers to 8 kilometers, enabling regular observations every hour and enhanced observations every 15 minutes [2]. - The satellite will provide uninterrupted lightning monitoring throughout the year, bolstering the ability to monitor and warn against severe convective weather [2]. Group 3: Broader Impact and Global Service - Fengyun-4C is expected to be positioned at 133°E, expanding the monitoring range to the central Pacific, thereby enhancing the monitoring of typhoon activities in the western Pacific [2]. - To date, China has launched 23 Fengyun meteorological satellites, with 10 currently operational, providing data products and services to 133 countries and regions globally [3]. - The China Meteorological Administration aims to enhance the effectiveness of the Fengyun satellite system, supporting global monitoring, forecasting, and services under the "Observation as a Service" concept [3].