IDRA weather radar measurements - day 2009-12-16

Radar range: standard. Max rain level: weak rain. Parent item: IDRA weather radar measurements - month 2009-12 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.

雷达量程：标准量程。最大降雨等级：弱降雨。父数据集条目：IDRA气象雷达观测数据——2009年12月。
测量仪器：位于荷兰卡堡CESAR（大气研究实验站点，Cabauw Experimental Site for Atmospheric Research）观测台的IDRA大气雷达。IRCTR研发了一套高分辨率雷达系统——IDRA（IRCTR毛毛雨雷达，IRCTR Drizzle Radar），旨在精准观测降雨与毛毛雨的时空分布特征。该系统于2007年8月底部署在荷兰卡堡市CESAR观测台内一座213米高的气象塔塔顶。
该观测点位具备三项核心优势：其一，地面杂波干扰得到有效抑制，雷达灵敏度显著提升；其二，可直接开展低层云与雾的水平分布观测；其三，周边配套的其他观测仪器可与本系统协同联动，通过多源观测数据融合，助力科研人员深化对大气物理过程的认知。
CESAR观测台其他仪器的观测数据可通过链接{http://www.cesar-database.nl}获取。
IDRA可输出反射率、平均多普勒速度、多普勒谱宽等雷达回波参数，以及差分反射率、线性退极化比、比差分相位等偏振遥感参量的水平分布数据。
本数据集采集的观测数据面向科学界免费开放共享。