IDRA weather radar measurements - month 2012-03

Parent item: IDRA weather radar measurements - all data Detailed observation of the spatial and temporal distribution of rainfall and drizzle, measured by IDRA (IRCTR Drizzle Radar) at Cabauw, Lopik, Netherlands. This is a growing time series of datasets, updated every few months. 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.

父项：IDRA天气雷达测量数据——全量数据
荷兰洛皮克市卡堡地区的IDRA（IRCTR Drizzle Radar，IRCTR毛毛雨雷达）对降雨和毛毛雨的时空分布进行了详细观测。这是一个不断增长的时间序列数据集，每数月更新一次。
测量仪器：卡堡CESAR观测站的IDRA大气雷达
IRCTR构建了一套高分辨率雷达系统IDRA（IRCTR Drizzle Radar，IRCTR毛毛雨雷达），旨在详细观测降雨和毛毛雨的时空分布。该系统于2007年8月底部署在荷兰卡堡CESAR（Cabauw Experimental Site for Atmospheric Research，卡堡大气研究实验场）观测站的213米高气象塔顶部。
该选址具有多项优势：首先，地面杂波影响的降低提升了系统灵敏度；其次，可直接观测低空云层与雾的水平分布；最后，周边其他仪器的存在可通过协同整合多源观测数据，加深对大气物理过程的理解。
CESAR观测站其他仪器的数据可通过{http://www.cesar-database.nl}获取。
IDRA可提供反射率、平均多普勒速度、多普勒谱宽及极化参数（如差分反射率、线性退偏比或比差分相位）的水平分布数据。所采集的数据向科学界免费开放。