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气象:2017,43(5):598-609
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飞机气象探测资料(AMDAR)质量控制与质量分析
江勤1, 张蕾2, 王晓峰2, 吴峻石1
(1.上海市宝山区气象局,上海 201901;2.中国气象局上海台风研究所,上海 200030)
Quality Control and Quality Analysis of Aircraft Meteorological Data
JIANG Qin1, ZHANG Lei2, WANG Xiaofeng2, WU Junshi1
(1.Shanghai Baoshan District Weather Office, Shanghai 201901;2.Shanghai Typhoon Institute, CMA, Shanghai 200030)
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投稿时间:2016-02-03    修订日期:2016-12-27
中文摘要: 文章基于NCEP的AMDAR质控方法,建立了一套业务质量控制系统。选取2014年全球AMDAR资料对系统进行测试,系统运行稳定,并根据质控结果统计分析了AMDAR资料各质量类型演变及分布特征。主要结论如下:(1) 2014年全年平均逐小时剔除率为5.79%,其中重复性报文占主要部分。(2) 报文数量和报文质量均表现出明显的日变化特征,重复性报文在报文数量密集时剔除率增加,可疑数据和时空不一致性相反。(3) 飞机报文质量在各个高度层表现出不同的特征,质量问题主要出现在近地面层、动力调整高度和飞行状态转换及巡航高度。(4) 经纬度阈值变化对重复报文剔除结果影响敏感度最高,主要反映在中高层,高度阈值影响表现在中低层。(5) 剔除疑误报文后计算的全球平均温度呈现明显正异常,风速负异常。
Abstract:In this paper, a quality control system was established based on the AMDAR quality control method from NCEP. Using one year AMDAR dataset, the system was tested and the characteristics of each AMDAR data quality type were examined. The main conclusions are as follows. (1) The hourly rejection rate of AMDAR data through year 2014 is 5.79%, and most of the rejections occur in near duplicate check. (2) There is a significant diurnal variation feature for both quantity and quality of AMDAR data. Duplicate reports increase with the growth of data quantity, while suspicious and disorderly reports decrease with the growth of data quantity. (3) The characteristics of the data quality are different in different height layers. Quality problems mainly occur in the near surface layer, and the heights where the power or the phase of aircraft are adjusted. (4) The result of near duplicate check is highly sensitive to the threshold of lat/lon, which mainly occurs in the upper layers, and the impact of height threshold happens in the lower layers. (5) The averaged global temperature after data quality control is higher than original reports at each height, while the averaged wind speed becomes lower than the original.
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基金项目:上海市科学技术委员会重点基金(13231203300)和国家科技支撑计划项目(2012BAC21B02)共同资助
引用文本:
江勤,张蕾,王晓峰,吴峻石,2017.飞机气象探测资料(AMDAR)质量控制与质量分析[J].气象,43(5):598-609.
JIANG Qin,ZHANG Lei,WANG Xiaofeng,WU Junshi,2017.Quality Control and Quality Analysis of Aircraft Meteorological Data[J].Meteor Mon,43(5):598-609.