拉曼激光雷达测量水汽的误差源分析研究

HFCAS OpenIR

	拉曼激光雷达测量水汽的误差源分析研究
其他题名	Analysis on Error Sources of Water Vapour Observed by Raman Lidar
	史悦 1; 谭敏 1; 王邦新1 ; 吴德成 1; 刘东1 ; 王英俭1 ; 谢晨波1
	2018
发表期刊	大气与环境光学学报
ISSN	1673-6141
摘要	常规手段测量水汽的时空分辨率较低,激光雷达可以有效提高局地短期天气预报的可信度。通过自研的拉曼激光雷达,依据误差传递理论,分析水汽混合比的误差。同时,利用无线电探空仪与拉曼激光雷达对比。分析结果表明：激光雷达测量水汽主要包括定标常数、大气透过率修正和测量信号三个误差源.其中,定标常数误差随高度不变,约为4%,是1.5 km以下误差的主要来源;大气透过率修正误差随高度升高而增加,洁净天气下对相对误差的影响小于4%;测量信号误差在洁净天气下,较3 km高度以内一般小于20%,在3 km高度以上,成为误差的主要来源。比对结果显示：激光雷达计算误差和比对误差一致性较好.上述分析结果对于提高激光雷达在气象预报中的应用起到很好的辅助作用.
其他摘要	When detecting water vapour, the traditional tools have low spatio-temporal resolution. Lidar can improve the credibility of weather forecast. According to the theory of error analysis,the error sources of water vapour and their contributions are investigated based on the experimental data. Meanwhile,the computed relative errors are compared with that calculated relative errors from Raman lidar and radiosonde data. It turns out that the error sources on water vapour observed by Raman lidar includes the calibration constant,the transmission correction and the Raman scattering signals. The calibration constant error is about 4% and constant with height, and the major contribution to the total error under 1.5 km height. The transmission correction error increases slowly along with the height and less than 4% in the condition of clean air. The Raman scattering signals error is less than 20% under 3 km height, but it becomes the main source above 3 km height. The comparison shows that the relative error derived by Raman lidar agrees well with the calculated relative error. In summary, the analysis results above are helpful to promote the application of Raman lidar in weather forecast.
关键词	拉曼激光雷达水汽混合比误差分析
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6247218
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/49063
专题	中国科学院合肥物质科学研究院
作者单位	1.中国科学院安徽光学精密机械研究所 2.中国科学院安徽光学精密机械研究所 3.中国科学院安徽光学精密机械研究所 4.中国科学院安徽光学精密机械研究所 5.中国科学院安徽光学精密机械研究所 6.中国科学院安徽光学精密机械研究所 7.中国科学院安徽光学精密机械研究所
推荐引用方式 GB/T 7714	史悦,谭敏,王邦新,等. 拉曼激光雷达测量水汽的误差源分析研究[J]. 大气与环境光学学报,2018,013.
APA	史悦.,谭敏.,王邦新.,吴德成.,刘东.,...&谢晨波.(2018).拉曼激光雷达测量水汽的误差源分析研究.大气与环境光学学报,013.
MLA	史悦,et al."拉曼激光雷达测量水汽的误差源分析研究".大气与环境光学学报 013(2018).