IDRA weather radar measurements - day 2018-02-20

Radar range: far. Max rain level: moderate rain. Parent item: IDRA weather radar measurements - month 2018-02 Measuring instrument: IDRA atmospheric radar in CESAR observatory, Cabauw IRCTR has built a high resolution radar system, IDRA (IRCTR Drizzle Radar), aimed at the detailed observation of the spatial and temporal distribution of rainfall and drizzle. The system was placed at the end of August 2007 on top of a 213 m high meteorological tower in the CESAR (Cabauw Experimental Site for Atmospheric Research) observatory in Cabauw, The Netherlands. This location has several advantages: In the first place, an increased sensitivity due to the reduction of the influence of ground clutter. Secondly, it allows direct observation of the horizontal distribution of low level clouds and fog. Finally, the presence of other instruments in the vicinity enhances the understanding of the physical processes in the atmosphere by synergistically combining their measurements. Data from other instruments at CESAR are available at {http://www.cesar-database.nl}. IDRA provides the horizontal distribution of reflectivity, mean Doppler velocity, Doppler spectrum width and polarimetric parameters like differential reflectivity, linear depolarization ratio or specific differential phase. The data collected is freely available to the scientific community.雷达作用距离：远距。最大降雨等级：中雨。父数据集项：IDRA气象雷达观测数据集——2018年2月。观测仪器：位于荷兰卡堡市CESAR（卡堡大气研究实验场，Cabauw Experimental Site for Atmospheric Research）天文台的IDRA大气雷达。IRCTR研发并搭建了一套高分辨率雷达系统IDRA（IRCTR毛毛雨雷达），其设计目标为精细化观测降雨与毛毛雨的时空分布特征。该系统于2007年8月底架设并部署于荷兰卡堡市CESAR天文台内一座213米高的气象铁塔顶部。该观测点位具备多项核心优势：其一，可降低地面杂波干扰，显著提升探测灵敏度；其二，可直接获取低层云与雾的水平分布观测数据；其三，附近布设的其他观测仪器可与本系统协同联动，通过多源数据融合深化对大气物理过程的科学认知。CESAR天文台其他仪器的观测数据可通过网址{http://www.cesar-database.nl}获取。IDRA系统可输出反射率因子（reflectivity）、平均多普勒速度（mean Doppler velocity）、多普勒谱宽（Doppler spectrum width）以及差分反射率（differential reflectivity）、线性退极化比（linear depolarization ratio）、特定差分相位（specific differential phase）等偏振参数的水平分布数据。所采集的全部观测数据均面向全球科研群体免费开放共享。