IDRA weather radar measurements - day 2011-02-22

Radar range: standard. Max rain level: moderate rain. Parent item: IDRA weather radar measurements - month 2011-02 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.

雷达量程：标准量程。最大降雨等级：中雨。父数据集条目：IDRA气象雷达观测数据——2011年2月。观测仪器：位于荷兰卡鲍市卡鲍大气研究实验场（Cabauw Experimental Site for Atmospheric Research，简称CESAR）的IDRA大气雷达。IRCTR搭建了一套高分辨率雷达系统IDRA雨滴雷达（IRCTR Drizzle Radar），旨在对降雨和毛毛雨的时空分布开展精细化观测。该系统于2007年8月末部署于荷兰卡鲍市CESAR观测站一座213米高的气象铁塔顶部。该选址具备多重优势：其一，地面杂波影响减弱，雷达灵敏度得以提升；其二，可直接观测低层云与雾的水平分布特征；其三，周边部署的其他观测仪器可与本系统协同联动，通过融合多源观测数据，助力研究者深入理解大气物理过程。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可输出反射率（reflectivity）、平均多普勒速度（mean Doppler velocity）、多普勒谱宽（Doppler spectrum width）等参量，以及差分反射率（differential reflectivity）、线性退极化比（linear depolarization ratio）、比差分相位（specific differential phase）等极化参数（polarimetric parameters）的水平分布数据。本数据集所采集的观测数据可对科研社区免费开放获取。