船载气象仪对比观测数据的质量评估与分析

Quality Evaluation and Analysis on the Contrastive Observing Data from Shipborne Meteorological Instruments

对南海南部海域2011年夏季航次调查中两套不同型号船载气象仪获取的对比观测数据进行了分析评估,结果表明该数据完整性较高,差异性较小,具有很好的准确性和可靠性。用t检验和线性回归方法对观测数据的日均值进行相关分析,结论一致:两套观测数据具有极强的相关性,均通过了99.9%的显著性相关检验。但由于仪器布放位置及传感器受周围环境影响等原因,部分要素的观测值存在缺测、"漂移"等现象。

This paper analyzes and evaluates the contrastive observing data acquired from two different types of shipborne meteorological instruments in the summer cruise survey of 2011 in the southern South China Sea. Results show that the data have high integrity, little differences as well as good accuracy and reliability. Correlation analysis is carried out on the daily average data using t-test and linear regression methods, obtaining the same conclusion that the two sets of observing data have a strong correlation, and both of them have passed 99.9% of the significant correlation test. However, due to the instrument location and the influence of surrounding environment on the instruments and sensors, some parameters are missing or ＂drifting＂.