中国山西地区法布里-珀罗干涉仪测风能力及数据质量检验

Capacity and Validation of Fabry-Perot Interferometer Wind Measurements in Shanxi of China

介绍了中国气象局山西岢岚大气观测站(39°N,112°E)法布里珀罗干涉仪(FPI)的基本构造、测风能力、程序处理流程、数据质量控制方法以及检验情况.岢岚观测站FPI可以观测892.0(OH)nm,557.7(OI)nm和630.0(OI)nm波长处气辉谱线的多普勒移动,分别计算对应87 km,97 km和250 km高度处的大气风速和大气温度,可给出中间层顶区域及热层风的大气潮汐和扰动情况.采用水平风模型(HWM)输出结果进行交叉检验,对FPI测风数据质量进行验证.结果显示,岢岚大气观测站FPI仪器的测风数据在长期趋势上与HWM模式的输出数据一致,风速变化幅度有季节性差异,数据质量控制方法有效,测风误差在87 km高度处为5.7 m·s^(-1),97 km处为1 3m·s^(-1),250km处为4.1 m·s^(-1),测风数据通过了可靠性俭验.

This article introduces the instrument structure of Fabry-Perot Interferometer(FPI),the capacity of wind measurements,the process of data reduction procedure,data quality control plan and data validation works which was deployed at Kelan Meteorological Bureau(39°N,112°E)in Shanxi,China.The FPI of Kelan has the ability to measure the Doppler shift of airglow emissions(OH 892.0 nm,OI557.7nm,OI630nm) at mesopause and in thermosphere to derive horizontal wind vector and atmosphere temperature at heights of 87 km,97 km and 250 km,respectively From late of 2011 to middle of 2014,a series of more than 6000 measurements at each height are derived according to manufacture data quality criteria.In data validation works,the Horizonal Wind Model(HWM) was applied to do the cross-comparison with Kelan FPI's observations.The comparisons show that the general trends of Kelan FPI's wind measurements are consistent with HWM's outputs and there exists difference of seasonal variation.The comparison results prove that the data quality control plan works and the measurement accuracies arc 5.7m·s^(-1) at 87 km,1.3m·s^(-1) at 97 km and4.1 m·s^(-1) at 250 km height.In general,Kelan FPI's wind measurements are reliable and useful for investigations of the wind morphology in the mesosphere and thermosphere.