FENG Qizhen,XIAO Hui,YAO Zhendong.Preliminary Study on Applicability of GPM_DPR Precipitation Measurements in Northern China by Using Ground Dual Polarization Radar[J].Journal of Chengdu University of Information Technology,2019,(04):323-332.[doi:10.16836/j.cnki.jcuit.2019.04.001]
利用地面双偏振雷达检验GPM_DPR 降水测量华北地区适用性初探
- Title:
- Preliminary Study on Applicability of GPM_DPR Precipitation Measurements in Northern China by Using Ground Dual Polarization Radar
- 文章编号:
- 2096-1618(2019)04-0323-10
- Keywords:
- radar; precipitation measurement; GPM
- 分类号:
- TN957.52+4
- 文献标志码:
- A
- 摘要:
- 全球降水测量(GPM)计划核心观测卫星已于2014年7月发射升空,地面验证是验证卫星探测能力的必备工作。主要是利用北京顺义地区的双偏振X波段雷达,并结合地面雨滴谱仪观测,对GPM双频雷达数据进行地面验证。实验着重于GPM卫星数据和地面X波段双偏振雷达数据之间进行交叉对比,利用地面雷达产生的降水测量评估卫星降水测量。结果表明,卫星和地面雷达反射率因子有较好的一致性,但降水产品存在明显的差异,有待进一步分析研究。
- Abstract:
- The Global Precipitation Measurement(GPM)program core observation satellite was launched in July 2014. Ground verification is an essential task to verify satellite detection capabilities. This paper mainly uses dual-polarized X-band radar data,and combines the ground raindrop spectrometer to verify GPM dual-frequency radar data in Shunyi, Beijing. This experiment focuses on the cross-validation between GPM satellite data and ground-based radar data. The precipitation measurements generated by ground-based radar are used to evaluate satellite precipitation measurements. The results show that the satellite and ground-based radar reflectivity factors are in good consistency. However, there are obvious differences in precipitation products, which need further analysis.
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备注/Memo
收稿日期:2019-04-06 基金项目:国家重点研发计划资助项目(2016YFE0201900-02); 国家自然科学基金资助项目(41575037); 国家重点基础研究发展计划(973)资助项目(2014CB441403)