IDRA weather radar measurements - day 2009-10-01

Radar range: standard. Max rain level: moderate rain. Parent item: IDRA weather radar measurements - month 2009-10 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——2009-10月。观测仪器：位于荷兰卡堡CESAR（Cabauw Experimental Site for Atmospheric Research）天文台内的IDRA大气雷达。IRCTR搭建了高分辨率雷达系统IDRA（IRCTR Drizzle Radar），旨在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月底部署在荷兰卡堡的CESAR天文台内一座213米高的气象塔塔顶。该选址具备多重优势：其一，可削弱地面杂波干扰，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，站点周边配备的其他观测仪器可与本系统协同开展观测，通过融合多设备数据深化对大气物理过程的认知。CESAR天文台的其他仪器观测数据可通过{http://www.cesar-database.nl}获取。IDRA可提供反射率、平均多普勒速度、多普勒谱宽以及偏振参数（如差分反射率、线性退偏振比、差分相移率）的水平分布数据。本数据集所收录的观测资料面向科学界免费开放。