基于通用模型的GRIB格式数据读取技术  

Data Reading Method of GRIB Format Based on General Model

作　　者：王兵[1] 李杰 WANG Bing;LI Jie(College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,Nanjing,211106,China;National Key Laboratory of Air Traffic Flow Management,Nanjing,211106,Ch)

机构地区：[1]南京航空航天大学民航学院,江苏南京211106 [2]国家空管飞行流量技术重点实验室,江苏南京211106

出　　处：《航空计算技术》2018年第6期96-101,共6页Aeronautical Computing Technique

摘　　要：利用wgrib/wgrib2命令行工具对GRIB1和GRIB2格式数据进行批量读取,存入已建立的GRIB通用数据模型进行统一化处理,并提供通用的数据处理模块和输出接口以提高数据的二次开发效率。通过读取ECMWF和NCEP发布的分析数据实例与同一时间的国内86个观测站数据进行比较,分析数据误差在可接受范围之内,其中气温平均相对误差低于0.3%,风向和风速的平均相对误差低于11%。结果表明,建模方法和数据处理算法是正确可行的。The GRIB1and GRIB2format data are imported by using wgrib/wgrib2command line tool and stored into the GRIB general data model where the general data processing module and output interface are provided to facilitate the secondary development of the data.By comparing the analysis data published by ECMWF and NCEP with the data of86domestic observatories at the same time,the error of the analysis data is within the acceptable range.The average relative error of air temperature is less than0.3%and the average relative error of wind direction and wind speed is lower than11%.This result shows that the modeling method and data processing algorithm are correct and feasible.

关 键 词：GRIB1 GRIB2 通用数据模型 wgrib/wgrib2 

分 类 号：P42[天文地球—大气科学及气象学] V321.2[航空宇航科学与技术—人机与环境工程]