IDRA weather radar measurements - day 2011-12-11

Radar range: standard. Max rain level: weak rain. Parent item: IDRA weather radar measurements - month 2011-12 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.

雷达探测量程：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——2011年12月。观测仪器：位于荷兰卡堡市CESAR（大气研究卡堡实验场，Cabauw Experimental Site for Atmospheric Research）天文台的IDRA大气雷达。该高分辨率雷达系统IDRA（IRCTR毛毛雨雷达，IRCTR Drizzle Radar）由IRCTR研发，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月底部署于上述天文台内一座213米高的气象铁塔顶部。该选址具备多重优势：其一，可降低地面杂波影响，提升观测灵敏度；其二，可直接观测低层云与雾的水平分布；其三，周边部署有其他观测仪器，通过协同整合多源观测数据，可加深对大气物理过程的理解。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系统可提供反射率、平均多普勒速度、多普勒谱宽的水平分布，以及差分反射率、线性退偏振比、比差分相位等偏振观测参数。所采集的观测数据对科学界免费开放获取。