IDRA weather radar measurements - day 2013-06-24

Radar range: standard. Max rain level: moderate rain. Parent item: IDRA weather radar measurements - month 2013-06 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6月。观测仪器：位于荷兰卡堡市CESAR（Cabauw Experimental Site for Atmospheric Research）天文台的IDRA大气雷达。IRCTR研发了高分辨率雷达系统IDRA（IRCTR Drizzle Radar），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月末部署于上述天文台内一座213米高的气象铁塔顶端。此选址具备多项核心优势：其一，地面杂波（ground clutter）影响大幅减弱，雷达灵敏度显著提升；其二，可直接获取低层云与雾的水平分布观测数据；其三，周边搭载的多台配套观测仪器可与本系统协同整合观测数据，助力研究者深入解析大气物理过程。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）以及差分反射率（differential reflectivity）、线性退极化比（linear depolarization ratio）、特定差分相位（specific differential phase）等极化参数的水平分布数据。本数据集所收录的全部观测数据均对全球科研社区免费开放。