IDRA weather radar measurements - day 2013-10-11

Radar range: standard. Max rain level: moderate rain. Parent item: IDRA weather radar measurements - month 2013-10 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：中雨。父数据集：IDRA气象雷达观测数据——2013年10月时段。
观测仪器：荷兰卡堡CESAR（Cabauw Experimental Site for Atmospheric Research，卡堡大气研究实验站）观测站的IDRA大气雷达。IRCTR搭建了一套高分辨率雷达系统IDRA（IRCTR 滴谱雷达），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月底部署在卡堡CESAR观测站内一座213米高的气象铁塔顶部。
该观测点位具备多重优势：其一，可降低地面杂波干扰，提升观测灵敏度；其二，能够直接观测低层云与雾的水平分布；其三，周边搭载的其他观测仪器可通过协同融合多源观测数据，助力科研人员深化对大气物理过程的认知。
CESAR观测站其他仪器的观测数据可通过以下网址获取：http://www.cesar-database.nl。
IDRA可提供雷达反射率（reflectivity）、平均多普勒速度（mean Doppler velocity）、多普勒谱宽（Doppler spectrum width）等核心参数，以及差分反射率（differential reflectivity）、线性退极化比（linear depolarization ratio）、差分相移率（specific differential phase）等偏振参数的水平分布数据。本数据集采集的观测数据面向科研社区免费开放共享。