IDRA weather radar measurements - day 2017-05-17

Radar range: standard. Max rain level: weak rain. Parent item: IDRA weather radar measurements - month 2017-05 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：小雨
父数据集：IDRA气象雷达观测数据——2017年5月

观测仪器为位于荷兰卡堡CESAR（卡堡大气研究试验场，Cabauw Experimental Site for Atmospheric Research）观测站内的IDRA大气雷达。国际雷达气候研究中心（IRCTR）搭建了这套高分辨率雷达系统IDRA（IRCTR毛毛雨雷达，IRCTR Drizzle Radar），旨在对降雨与毛毛雨的时空分布开展精细化观测。该系统于2007年8月末部署于荷兰卡堡的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，可削弱地面杂波影响，提升观测灵敏度；其二，可直接观测低层云与雾的水平分布特征；其三，周边搭载的其他观测设备可与本系统协同联动，通过融合多设备观测数据，深化对大气物理过程的认知。

CESAR观测站内其他仪器的观测数据可通过网址{http://www.cesar-database.nl}获取。

IDRA可输出反射率、平均多普勒速度、多普勒谱宽以及差分反射率、线性退偏振比、比差分相位等偏振参数的水平分布数据。本数据集所收录的观测数据可向全球科研社区免费开放获取。