IDRA weather radar measurements - day 2009-07-03

Radar range: standard. Max rain level: weak rain. Parent item: IDRA weather radar measurements - month 2009-07 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气象雷达测量数据——2009年7月数据集。测量仪器：荷兰卡堡CESAR（Cabauw Experimental Site for Atmospheric Research，卡堡大气研究试验场）观测站内的IDRA（IRCTR Drizzle Radar）大气雷达。IRCTR 搭建了这套高分辨率雷达系统，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月底部署在该观测站内一座213米高的气象塔塔顶。该观测站选址具备多重优势：其一，可削弱地面杂波影响，提升探测灵敏度；其二，可直接获取低层云与雾的水平分布观测数据；其三，周边配套多台其他观测仪器，通过协同整合多源测量数据，可深化对大气物理过程的认知。CESAR观测站其他仪器的公开数据可通过链接{http://www.cesar-database.nl}获取。IDRA可输出反射率、平均多普勒速度、多普勒谱宽的水平分布数据，以及差分反射率、线性退极化比、特定差分相位等偏振气象参数。本数据集面向全球科研群体免费开放。