China has successfully advanced its ocean observation and environmental monitoring efforts with the launch of the Haiyang-2E (HY-2E) marine satellite. This satellite was propelled into orbit by a Long March 4B rocket, which took off from the Jiuquan Satellite Launch Center in northwest China at 7:46 a.m. Beijing time on Thursday. This mission is part of the extensive Long March rocket series, marking its 654th successful launch.
The HY-2E, developed by the China Academy of Space Technology (CAST), is the latest in the Haiyang-2 series, China’s pioneering satellite network dedicated to marine environment surveillance. This new satellite will replace the HY-2B, which was launched in 2018, and will operate in conjunction with the existing HY-2C and HY-2D satellites. Together, these satellites form a constellation that continuously gathers vital data to bolster marine observation and forecasting capabilities.
Equipped with four sophisticated microwave remote sensing instruments, the HY-2E satellite is designed to capture detailed data on sea surface conditions. These tools will measure sea surface height, wave height, wind fields, and sea surface temperature, providing critical data for marine weather forecasting, climate research, and studies of phenomena like El Niño. The addition of HY-2E is expected to enhance the precision and dependability of ocean-related data collection.
Over the past decade, the Haiyang-2 satellite program has been instrumental in disaster prevention, maritime safety, and scientific research. The satellites have provided essential data for tracking typhoons, supporting tsunami early warning systems, and refining global numerical weather prediction models. Their contributions also extend to marine resource management and national maritime security initiatives.
Besides its role in weather and climate applications, the Haiyang-2 series offers tangible benefits for the fishing and shipping industries. Data on ocean currents, wind, and waves assist in locating productive fishing areas, enabling vessels to operate more effectively and economize on costs. Since the introduction of HY-2B, these satellites have also featured an Automatic Identification System (AIS), which facilitates the continuous tracking of vessel positions, speeds, and identification details to enhance navigation safety on busy maritime routes.