RAO Chen,XIAO Hui,YAO Zhendong,et al.Characteristic Analysis of Precipitation in Summer and Winter in Northern China based on Micro Rain Radar Observation[J].Journal of Chengdu University of Information Technology,2020,35(04):392-399.[doi:10.16836/j.cnki.jcuit.2020.04.005]
基于微雨雷达观测北京地区夏冬季降水个例特征分析
- Title:
- Characteristic Analysis of Precipitation in Summer and Winter in Northern China based on Micro Rain Radar Observation
- 文章编号:
- 2096-1618(2020)04-0392-08
- 分类号:
- TN957
- 文献标志码:
- A
- 摘要:
- 利用微雨雷达在北京地区的降水观测数据,对夏冬两季降水情况进行降水参数反演及垂直分布特征分析。选取一次夏季层状云降水个例,利用速度谱低端法剔除垂直气流对雨滴下落末速度的影响,进行微雨雷达观测数据的质量控制,剔除垂直气流影响后,反演反射率因子Z、降雨强度R、液态含水量LWC、雨滴总数浓度N0等降雨参数; 通过直接积分多普勒频谱计算等效反射率因子Ze和降雪率S,减小MRR雷达观测冬季降雪特征量与实际特征量的误差。实验结果表明,剔除垂直气流影响对后续降雨参数的反演误差有一定改善
- Abstract:
- In this paper, the precipitation observation data of North China in the light rain radar(MRR)are used to analyze the precipitation parameters in summer and winter and analyze the vertical distribution characteristics. A case of stratiform cloud precipitation in summer was selected, and the effect of vertical airflow on the falling velocity of raindrops was eliminated by using the low-end velocity spectrum method to perform quality control of MRR radar observation data. After excluding the influence of vertical airflow, the rainfall parameters such as reflectivity factor Z, rainfall intensity R, liquid water content LWC, and total raindrop concentration N0 are retrieved; By directly integrating the Doppler spectrum, the equivalent reflectivity factor Ze and the snowfall rate S are calculated to reduce the error between the winter snowfall feature quantity and the actual feature quantity observed by the MRR radar. The results show that after excluding the influence of vertical airflow, the error of the inversion results of subsequent rainfall parameters has improved to some extent
参考文献/References:
[1] R Harikumar,S Sampath,V Sasi Kumar.An empirical model for the variation of rain drop size distribution with rain rate at a few locations in southern India[J].Advances in Space Research,2009,43(5):837-844.
[2] Wang Hong,Lei Hengchi,Yang Jiefan.Microphysical Processes of a Stratiform Precipitation Event over Eastern China:Analysis Using Micro Rain Radar data[J].大气科学进展(英文版),2017,34(12):1472-1482.
[3] 周黎明,王庆,龚佃利,等.山东一次暴雨过程的云降水微物理特征分析[J].气象,2015(2):192-199.
[4] 魏伟,叶鑫欣,王海霞,等.飞机测风资料在大气边界层研究中的应用[J].北京大学学报(自然科学版),2015,51(1):24-34.
[5] Islam T,Rico-Ramirez M A,Thurai M,et al.Characteristics of raindrop spectra as normalized gamma distribution from a JossWaldvogel disdrometer[J].Atmospheric Research,2012,108:57-73.
[6] METEK Meteorologische Messtechnik GmbH.MRR-2 Micro Rain RADAR User Manual Version 5.2.0.1[R].2009.
[7] Wagner A,Clemens M,Seltmann J.Vertical profile of drop size spectra[M].Proceedings of ERAD,2004:402-406.
[8] Peters,Gerhard,Fischer,et al.Profiles of Raindrop Size Distributions as Retrieved by Microrain Radars[J].Journal of Applied Meteorology,2005,44(12):1930-1949.
[9] Deiderich M,Crewell S,Simmer C,et al.Investigation of rainfall microstructure and variability using vertically pointing radar and disdrometer[C].Third European Conference on Radar Meteorology(ERAD),2004.
[10] Clemens M,Gerhard P,Seltmann J,et al.Identification of temporal stable Z/R relations using micro-rain radars[C].The Fifth European Conference on Radar in Meteorology and Hydrology,2008.
[11] Konwar,Mahen,Das,et al.Microphysics of clouds and rain over the Western Ghat[J].Journal of Geophysical Research Atmospheres,2014,119(10):6140-6159.
[12] Das S,Maitra A.Vertical profile of rain:Ka band radar observations at tropical locations[J].Journal of Hydrology,2016,534:31-41.
[13] Das S,Maitra A.Vertical profile of rain: Ka band radar observations at tropical locations[J].Journal of Hydrology,2016,534:31-41.
[14] 温龙.两次降水过程的微降雨雷达探测精度分析[J].气象,2015,(5):577-587.
[15] Wen L,Zhao K,Zhang G,et al.Statistical Characteristics of Raindrop Size Distributions Observed in East China during the Asian Summer Monsoon Season using 2D-Video Disdrometer and Micro-rain Radar Data[J].Journal of Geophysical Research Atmospheres,2016,121.
[16] Wen Guang,Xiao Hui,Yang Huiling,et al.Characteristics of summer and winter precipitation over northern China[J].Atmospheric Research,2017,197(11):390-406.
[17] 李遥,牛生杰,吕晶晶,等.2018年冬季南京三次暴雪过程微物理特征分析[J].大气科学,2019(5):1095-1108.
[18] 李玉莲,孙学金,赵世军,等.Ka波段毫米波云雷达多普勒谱降雪微物理特征分析[J].红外与毫米波学报,2019,38(2):245-253.
[19] 何思远,刘晓阳,孙大利,等.速度谱低端法在MRR反演雨滴谱中的应用研究[J].北京大学学报(自然科学版),2015,51(3).
[20] Rogers R R.An Extention of Z-R relation for Doppler Rader[C].the 11th Weather Rader Confernce,AMS,Boston.MA.,Goulder,Co.,1964:14-18.
[21] Hauser D,Amayenc P.A New Method for Deducing Hydrometeor-Size Distributions and Vertical Air Motions from Doppler Radar Measurements at Vertical Incidence[J].J.appl.meteor,1981,20(20):547-555.
[22] 汤达章,Richard E,Passarelli.垂直指向多卜勒雷达测量大气垂直运动和雨滴谱等物理量的方法[J].大气科学学报,1985(1):36-45.
[23] Maahn M,Kollias P.Improved Micro Rain Radar Snow Measurements Using Doppler Spectra Post-Processing [J].Atmos.Meas.Tech.,2012,5:2661-2673.
[24] Gunn R,Kinzer G D.The Terminal Velocity of Fall for Water Droplets in Stagnant Air[J].Journal of Atmospheric Sciences,1949,6(4):243-248.
[25] Foote G B,Du Toit P S.Terminal Velocity of Raindrops Aloft[J].Journal of Applied Meteorology,1969,8(2):249-253.
[26] 王洪,雷恒池,杨洁帆.微降水雷达测量精度分析[J].气候与环境研究,2017(4).
备注/Memo
收稿日期:2020-03-17
基金项目:国家重点基研究发展计划资助项目(2014CB441403); 国家重点研发战略性国际科技创新合作重点专项资助项目(2016YE0201900-02); 国家自然科学基金资助项目(41575037)收稿日期:2019-12-27
项目基金:四川省教育厅高校创新团队项目(15TD0022)