论文

青藏高原复杂地形区雷达估测降水方法研究

  • 庄薇- ,
  • 刘黎平 ,
  • 王改利 ,
  • 崔哲虎
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  • 中国气象科学研究院灾害天气国家重点实验室, 北京100081;南京信息工程大学, 江苏 南京210044

网络出版日期: 2013-10-28

Radar-Derived Quantitative Precipitation Estimation in Complex Terrain Area in Qinghai-Xizang Plateau

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Online published: 2013-10-28

摘要

青藏高原地形复杂, 雷达波束遮挡严重, 零度层亮带及以上冰相过程对降水估测的影响显著, 至今为止尚没有适合于青藏高原的雷达估测降水方法。利用2008—2010年汛期青海西宁雷达和雨量站资料, 在对资料进行质量控制的基础上, 根据雨量计观测的总雨量与雷达估测总雨量相等的条件, 建立适合于青藏高原地区各类型降水的气候Z-R关系, 并利用雨量计对雷达估测的降水进行校准。结果表明, 新建立的适合青藏高原地区的气候Z-R关系可以减小常规经验Z-R关系对降水的严重低估; 在亮带区, 应先进行亮度层亮带的订正, 再用适合的Z-R关系(Z=29R1.6)估测降水; 对亮带区的高反射率因子进行亮带识别和订正, 并用各类型降水相应的Z-R关系估测降水, 可以减小雷达估测降水的误差, 提高雷达估测降水的精度; 平均校准法可以避免测站稀少和单个测站随机误差大而造成的校准不稳定, 进一步提高青藏高原测站稀少地区的降水估测精度。

本文引用格式

庄薇- , 刘黎平 , 王改利 , 崔哲虎 . 青藏高原复杂地形区雷达估测降水方法研究[J]. 高原气象, 2013 , 32(5) : 1224 -1235 . DOI: 10.7522/j.issn.1000-0534.2012.00118

Abstract

There has been little research about radar-derived quantitative precipitation estimation over the Qinghai-XizangPlateau due to the complex terrain, severe radar beam blockage and few rain gauges until now. Radar and gauge data of thirteen storm events in Xining from 2008 to 2010 had been quality controlled to construct the new climatology Z-R relationshipsof different precipitation types which wereadjusted based on comparison of gauge  and radar rainfall. The gauge mean calibration method is developed on the bases of the precipitation classification and bright band (BB) correction. The results show that the significant underestimations of precipitation are successfully reduced by the new constructed Z-R relationship of different precipitation types. As to the precipitation estimation on the BB areas, BB correction should be applied before precipitation estimation using the perfect (Z=29R1.6) Z-R relationship. The precipitation estimation error reduces due to the high reflectivity are corrected on BB areas and applying the perfect Z-R relationship of different precipitation types. The gauge mean calibration method can further improve the accuracy of precipitation estimation on the basis of BB correction and precipitation classification in the Qinghai-Xizang Plateau.

参考文献

[1]Xu Xiangde, Chen Lianshou. Advances of the study on Tibetan Plateau Experiment of Atmospheric Sciences[J]. J Appl Meteor Sci, 2006, 17(6): 756-772.
[2]刘黎平, 楚荣忠, 宋新民. GAME-TIBET青藏高原云和降水综合观测概况及初步结果[J]. 高原气象, 1999, 18(3): 441-450.
[3]冯锦明, 刘黎平, 王致君. 青藏高原地面Doppler雷达与TRMM星载雷达测云比较[J]. 高原气象, 2001, 20(4): 345-353.
[4]冯锦明, 刘黎平, 王致君. 青藏高原那曲地区雨季雷达回波、降水和部分热力参量的统计特征[J]. 高原气象, 2002, 21(4): 368-374.
[5]Liu Liping, Feng Jinming, Chu Rongzhong. The diurnal variation of precipitation in monsoon season in the Tibetan Plateau[J]. Adv Atmos Sci, 2002, 19(2): 365-378.
[6]张亚萍. 雷达定量测量降水在佛子岭流域径流模拟中的应用[J]. 应用气象学报, 2007, 18(5): 631-646.
[7]Steiner M, Smith J A. Use of three-dimensional reflectivity structure for automated detection and removal of nonprecipitating echoes in radar data[J]. J Atmos Oceanic Technol, 2002, 19: 673-686.
[8]Smith C J. The reduction of errors caused by bright bands in quantitative rainfall measurements made using radar[J]. J Atmos Oceanic Technol, 1986, 3: 129-141.
[9]Atlas D. Advances in radar meteorology[J]. Adv Geophys, 1964, 10: 318-478.
[10]Battan L J. Radar Observation of the Atmosphere[M]. Chicago: The University of Chicago Press, 1973: 324.
[11]Krajewski W F, Smith J A. Radar hydrology: Rainfall estimation[J]. Adv Water Resour, 2002, 25: 1387-1394.
[12]Russo F, Napolitano F, Gorgucci E. Rainfall monitoring systems over an urban area[J]. The City of Rome, 2005, 19: 1007-1019.
[13]Chumchean S, Sharma A, Seed A W. Radar rainfall error variance and its impact on radar rainfall calibration[J]. J Phys Chem Earth, 2003, 28: 27-39.
[14]Seed A W, Nicol J, Austin G L. The impact of radar and raingauge sampling errors when calibrating a weather radar[J]. Meteor Appl, 1996, 3: 43-52.
[15]Smith S J, Burges S J. Effect of bias adjustment and rain gauge data quality control on radar rainfall estimation[J]. Water Resour Res, 1999, 35: 2487-2503.
[16]Seed L Siriwardena, Sun X, Jordan P. On the calibration of Australian weather radars[R]. Australian Bureau of Meteorology Tech, 2002: 40.
[17]Smith J A, Krajewski W F. A modeling study of rainfall rate-reflectivity relationships[J]. Water Resour Res, 1993, 29: 2505-2514.
[18]Doelling I G, Joss J, Riedl J. Systematic variations of Z-R relationships from drop size distributions measured in northern Germany during seven years[J]. Atmos Res, 1998, 47-48: 635-649.
[19]Steiner M, Smith J A. Reflectivity, rain rate, and kinetic energy flux relationships based on raindrop spectra[J]. J Appl Meteor, 2000, 39: 1923-1940.
[20]Hagen M, Yuter S E. Relations between radar reflectivity, liquid-water content, and rainfall rate during the MAP SOP[J]. Quart J Roy Meteor Soc, 2003, 129: 477-494.
[21]Houze Jr R A. Cloud Dynamics[M]. London: Academic Press Limited, 1993: 573.
[22]Vieux B, Bedient P. Estimation of rainfall for flood prediction from WSR-88D reflectivity: A case study 17-18 October 1994[J]. Wea Forecasting, 1998, 13: 407-415.
[23]袁晓清, 倪广恒, 潘安君. 北京新一代天气雷达Z-R关系研究[J]. 水文, 2010, 30(1): 1-6.
[24]赵果, 楚荣忠, 张彤, 等. 偏振多普勒雷达定量测量降雨精度的改进[J]. 高原气象, 2011, 30(2): 498-507.
[25]何宽科, 范其平, 李开奇. 舟山地区台风降水Z-R关系研究及其应用 [J].应用气象学报, 2007, 18(4): 573-576.
[26]Olivier P Prat, Ana P Barros. Exploring the transient behavior of Z-R relationships: Implications for radar rainfall estimation[J]. J Appl Meteor Climatol, 2009, 48: 2127-2143.
[27]张雯雯, 刘黎平, 阮征, 等. 风廓线雷达回波参量估计算法验证及其地杂波抑制方法研究[J]. 高原气象, 2011, 30(4): 1096-1101.
[28]庄薇, 刘黎平. 雷达地物回波模糊逻辑识别法的改进及效果检验[J]. 气象学报, 2012, 70(3): 576-584
[29]庄薇, 刘黎平, 胡志群. 青藏高原零度层亮带的识别订正方法及在雷达估测降水中的应用[J]. 气象, 2013, 39(8): 1004-1013.
[30]Chang Paoliang, Lin Pinfang, Ben Jongdao. An application of reflectivity climatology in constructing Radar Hybrid Scans over complex terrain [J]. J Atmos Ocean Technol, 2009, 26(7): 1315-1327.
[31]Zhuang Wei, Liu Liping. A reflectivity climatology based Hybrid Scans Algorithm and its application in radar coverage over the Tibetan Plateau[J]. Acta Meteor Sinica, 2012, 26(6): 746-757.
[32]李建通, 郭林, 杨洪平. 雷达雨量计联合估测降水初值场形成方法探讨[J]. 大气科学, 2005, 29(6): 1010-1020.
[33]Zhang Jian, Carrie Langston, Kenneth Howard. Brightband Identification based on Vertical Profiles of Reflectivity from the WSR-88D[J]. J Atmos Oceanic Technol, 2008, 25(10): 1859-1872.
[34]Zhang Jian, Kenneth Howard, Carrie Langston. National mosaic and multi-sensor QPE (NMQ) system[C]. Amer Meteor Soc, 2011: 1321-1338.
[35]James W. Wilson, Edward A. Brandes. Radar Measurement of rainfall\_A summary[J]. Bull Amer Meteor Soc, 1979, 60(9): 1048-1058.
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