Study on feasibility of numerical weather forecasting using ultra-rapid ephemeris

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    In order to obtain a real-time atmospheric water vapor field of high temporal and spatial resolution, based on the principle of remote sensing of atmospheric precipitable water vapor(PWV)using a ground-based GPS, the observed data at certain stations in the Hong Kong CORS network were processed. According to the different time spans in calculating PWV with ultra-rapid ephemeris, three schemes were designed. In each scheme, PWV data calculated with final precise ephemeris, ultra-rapid ephemeris, and radiosonde data were compared. The results show that the predicted PWV data of the ultra-rapid ephemeris agree with those of the final precise ephemeris, and its accuracy satisfies the requirements of real-time service, such as weather forecasting.

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王俊杰,何秀凤.基于超快速星历的数值天气预报可行性研究[J].河海大学学报(自然科学版),2015,43(3):267-270.(WANG Junjie, HE Xiufeng. Study on feasibility of numerical weather forecasting using ultra-rapid ephemeris[J]. Journal of Hohai University (Natural Sciences),2015,43(3):267-270.(in Chinese))

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  • Received:June 24,2014
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  • Online: June 01,2015
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