HY-2 Satellite Microwave Remote Sensing of Ocean for 10 Years: Applications and Advances

Dear Colleagues,

China’s first marine power environment satellite, the Ocean 2 satellite (HY-2), was successfully launched at the Taiyuan Satellite Launch Center at 6:57 on August 16, 2011. The HY-2 satellite is equipped with four microwave remote sensors: a microwave scatterometer, a radar altimeter, a scanning microwave radiometer and a calibration microwave radiometer, with high-precision orbit determination and all-weather, all-day global detection capability. The objective of HY-2 is to monitor the dynamic ocean environment with microwave radar and radiometer sensors to measure sea surface wind field, sea surface height and sea surface temperature, directly providing measured data for early warning and forecasting of catastrophic sea conditions, for marine disaster prevention and mitigation, and to protect maritime rights and interests [https://www.globalsecurity.org/space/world/china/hy-2.htm].

The HY-2A satellite has been operating on orbit for 10 years (as of the end of September 2021), and has produced a huge volume of datasets and products, which need to be calibrated and validated in a long duration scale for further application. The results, successes and lessons learned from HY-2A should be summarized, which will benefit the following missions of HY-2 satellites and other remote sensing satellites.

Authors are invited to submit papers on the application of active and passive microwave sensors on the HY-2A satellite, especially on evaluating the data consistency, the accuracy or precision of the product, the trends and varied features derived from the long-term data, and other topics related to the sensors and applications of the HY-2A satellite.

We will welcome contributions where four microwave sensors are combined with each other or with other sensors in applied research and cross-calibration.

The following list provides some examples of topics of interest to ensure the consistency of the papers in this Special Issue:

• Calibration and product consistency evaluation of microwave sensors;
• Data product algorithm development, assessment and validations for 10 years of HY-2A operation;
• Applications of active and passive microwave sensors to the ocean environment;
• Fusion and assimilation of HY-2A data.

We invite all prospective authors to share their research results.

Prof. Dr. Zhenzhan Wang
Prof. Dr. Mingsen Lin
Prof. Dr. Xiaolong Dong
Guest Editors

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