ZUO Dongfei,YANG Ling,DING Deping,et al.Data Quality Control of Airborne Precipitation Cloud Radar[J].Journal of Chengdu University of Information Technology,2022,37(05):544-550.[doi:10.16836/j.cnki.jcuit.2022.05.010]
机载降水云雷达的数据质量控制
- Title:
- Data Quality Control of Airborne Precipitation Cloud Radar
- 文章编号:
- 2096-1618(2022)05-0544-07
- Keywords:
- airborne precipitation cloud radar; Gaussian filtering; trajectory correction; quadratic spline interpolation; doppler velocity; spectrum width
- 分类号:
- TN959.4
- 文献标志码:
- A
- 摘要:
- 利用机载降水云雷达(Ka-band precipitation cloud radar，KPR)进行穿云观测，对 KPR 的数据质量进行以下研究:(1)由于 KPR 探测的原始数据存在很多背景噪声，对 KPR 的产品图采用高斯滤波进行去噪。(2)KPR 的探测视角是以飞机为基准，为更好判断云顶、云底等信息，对 KPR 产品进行了飞机轨迹订正，并采用二次样条插值消除了飞机轨迹上的噪声和增益。(3)受飞机运动的影响，KPR 测得的多普勒速度和频谱宽度与实际存在较大的误差，通过相关算法完成了多普勒速度和谱宽的订正。通过数据质量控制，KPR 的产品质量得到明显改善。
- Abstract:
- The airborne Precipitation Cloud Radar(KPR)is used for Cloud penetrating observation. The data quality of KPR is studied as follows:(1)the product image of KPR is denoised by gaussian filter because there is a lot of background noise in the original data detected by KPR.(2)The detection angle of KPR is based on the aircraft.In order to better judge cloud top and cloud bottom information, the trajectory of KPR products is revised, and the noise and gain on the trajectory of KPR products are eliminated by the quadratic spline interpolation.(3)Due to the influence of aircraft movement, the doppler velocity and spectrum width measured by KPR have a large error with the actual situation, and the doppler velocity and spectrum width are corrected by the correlation algorithm. Through data quality control, KPR’s product quality has been significantly improved.
参考文献/References:
[1] Cess D,PotterL,Blanchet P,et al.Interpretation of cloud-cimate feedback as produced by 14 atmospheric general circulation models[J].Science,1989,245(4917):513-516.
[2] Zhou C,Zelinka D,Klein A.Impact of decadal cloud variations on the earth’s energy budget[J].Nature Geoscience,2016,9:871-874.
[3] Moran P,Martner E,Post J,et al.An unattended cloud-profiling radar for use in climate research[J].Bulletin of the American Meteorological Society,1998,79(3):443-455.
[4] Kollias P,Clothiaux E,Miller A,et al.Millimeter-wavelength radars-New frontier in atmospheric cloud and precipitation research[J].Bulletin of the American Meteorological Society,2007,88(10):1608-1624.
[5] Wang Z.A refined two-channel microwave radiometer liquid water path retrieval for cold regions by using multiple-sensor measurements[J].IEEE Geoscience & Remote Sensing Letters,2007,4(4):591-595.
[6] Turner D,Clough A,Liljegren C,et al.Retrieving liquid water path and precipitable water vapor from the Atmospheric Radiation Measurement(ARM)microwave radiometers[J].IEEE Transactions on Geoscience & Remote Sensing,2007,45:3680-3690.
[7] Korolev V,Strapp W,Cober G,et al.Quantification of the effects of shattering on airborne ice particle measurements[J].Journal of Atmospheric & Oceanic Technology,2013,30:2527-2553.
[8] Maahn M,Löhnert U.Potential of higher order moments of the radar doppler spectrum for retrieving microphysical and kinematic properties of Arctic ice clouds[J].Journal of Applied Meteorology & Climatology,2017,56(2):263-282.
[9] Löhnert U,KolliasP,Jackson C,et al.Developing and evaluating ice cloud parameterizations for forward modeling of radar moments using in-situ aircraft observations[J].Journal of Atmospheric & Oceanic Technology,2015,32(5).
[10] Haimov S,French J,Geerts B,et al.Compact airborne Ka-band radar:A new addition to the University of Wyoming aircraft for atmospheric research[C].2018 IEEE International Geoscience and Remote Sensing Symposium.IEEE,2018.
[11] 商建,郭杨,吴琼,等.我国Ka频段降水测量雷达机载校飞试验结果.应用气象学报[J],2011,22(5):590-596.
[12] 吴琼,商建,仰美霖,等.基于非表面参考技术的机载双频降水反演结果分析[J].遥感技术与应用[J],2014,29(3):378-385.
[13] 陈廷娣,王连仲,窦贤康.TRMM卫星与机载雷达在降雨反演中的数据对比个例研究[J].应用气象学报[J].2008,19(4):454-462.
[14] Pazmany A L,Wolde M.A compact airborne G-band(183 GHz)water Vapor Radiometer and retrievals of liquid cloud parameters from coincident radiometer and millimeter wave radar measurements[C].Microwave Radiometry & Remote Sensing of the Environment,Microrad.IEEE,2008.
[15] Wolde M, Hudak D,Pazmany A L.Characterization of supercooled and mixed phase clouds using airborne dual-frequency radar and G-band radiometer[J].2012(2).
[16] Damiani R,Haimov S.A high-resolution dual-doppler technique for fixed multiantenna airborne radar[J].IEEE Transactions on Geoscience & Remote Sensing,2006,44(12):3475-3489.
备注/Memo
收稿日期:2021-12-03
基金项目:国家自然科学基金资助项目(42075084)